London Heathrow Airport LHR to Seattle-Tacoma International Airport SEA flight with British Airways

Sat, Apr 04
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Journey information

Overview: London Heathrow Airport to Seattle-Tacoma International Airport flight

United KingdomUnited Kingdom
USAUSA
Icon of flight

Flights from London Heathrow Airport to Seattle-Tacoma International Airport depart on average 133 times per day, taking around 10h 36m. Cheap flight tickets for this journey start at $751 (€612) if you book in advance.

There are 5 flights per day. The earliest flight runs at 06:35, the last at 14:50. The fastest flight covers the 4786 miles (7703 km) distance in 14h 45m. December is the cheapest month to fly.

Fares are the lowest economy prices found on Omio. Early booking often means lower prices. Prices change daily and are subject to availability. Discount cards, coach trips, and booking fees are not included.
Price information
Distance
4786 miles (7703 km)
Average flight duration
10h 36m
Cheapest ticket price
$751 (€612)
Flights per day
133
Direct flights
5
Fastest flight
14h 45m
Cheapest month
December
First flight
6:35 AM
Last flight
2:50 PM
Fares are the lowest economy prices found on Omio. Early booking often means lower prices. Prices change daily and are subject to availability. Discount cards, coach trips, and booking fees are not included.
Price information

The cheapest and fastest flights from London Heathrow Airport to Seattle-Tacoma International Airport

Showing times and prices for Apr 04

Cheapest price

$1060

Average price

$1516

Fastest journey

9 h 55 m

Average duration

11 h 1 m

Flights per day

77

Distance

7703 km

Cheap tickets

The best way to find a cheap flight ticket from London Heathrow Airport to Seattle-Tacoma International Airport is to book your journey as far in advance as possible and to avoid traveling at rush hour.

The average ticket from London Heathrow Airport to Seattle-Tacoma International Airport will cost around $1516 if you buy it on the day, but the cheapest tickets can be found for only $1060.

Fast flights

Of the 77 flights that leave London Heathrow Airport for Seattle-Tacoma International Airport onSat, Apr 04, 3 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.

On Sat, Apr 04 the direct flights cover the 7703 km distance in an average of 11 h 1 m but if you time it right, some flights will get you there in just 9 h 55 m .

On Sat, Apr 04 the longest flights will take 12 h 15 m and usually involve a change or two along the way, but you might be able to save a few pennies if you’re on a budget.

  • LufthansaLH2481 · LH488
    8:25 PM28h34
    London Heathrow Airport
    4:59 PMSeattle-Tacoma International Airport
    $10601One-way
    1 transfer
  • LufthansaLH2479 · LH488
    5:50 PM31h09
    London Heathrow Airport
    4:59 PMSeattle-Tacoma International Airport
    $10601One-way
    1 transfer
  • LufthansaLH2487 · LH488
    7:10 PM29h49
    London Heathrow Airport
    4:59 PMSeattle-Tacoma International Airport
    $10601One-way
    1 transfer
  • UnitedLH9260 · LH7484
    12:15 PM16h38
    London Heathrow Airport
    8:53 PMSeattle-Tacoma International Airport
    $10681One-way
    1 transfer
  • UnitedLH9356 · LH7504
    11:05 AM15h41
    London Heathrow Airport
    6:46 PMSeattle-Tacoma International Airport
    $10681One-way
    1 transfer

Live departures

London Heathrow Airport to Seattle-Tacoma International Airport flight times

The table below shows live departures for London Heathrow Airport to Seattle-Tacoma International Airport flights for today, Friday, April 3. You can also manually refresh the results below to see updated flight journeys.

Last updated at
ProviderDepartsDurationArrivesTransfers
Tickets
unitedUA939 · UA10073:15 PM London Heathrow Airport
15h15
6:30 AM Seattle-Tacoma International Airport1 transfer
american_airlinesIB4207 · IB41343:25 PM London Heathrow Airport
16h30
7:55 AM Seattle-Tacoma International Airport1 transfer
american_airlinesBA1530 · BA55413:25 PM London Heathrow Airport
16h30
7:55 AM Seattle-Tacoma International Airport1 transfer
british_airwaysBA493:30 PM London Heathrow Airport
9h55
1:25 AM Seattle-Tacoma International Airport0 transfersDirect
unitedLH9266 · LH74843:40 PM London Heathrow Airport
36h13
3:53 AM Seattle-Tacoma International Airport1 transfer
delta_air_linesAF35864:45 PM London Heathrow Airport
10h19
3:04 AM Seattle-Tacoma International Airport0 transfersDirect
delta_air_linesKL60224:45 PM London Heathrow Airport
10h19
3:04 AM Seattle-Tacoma International Airport0 transfersDirect
unitedUA921 · UA13305:00 PM London Heathrow Airport
24h45
5:45 PM Seattle-Tacoma International Airport1 transfer
lh_city_airlinesLH4231+lufthansaLH4905:30 PM London Heathrow Airport
25h50
7:20 PM Seattle-Tacoma International Airport1 transfer
lufthansaLH919 · LH4906:30 PM London Heathrow Airport
24h50
7:20 PM Seattle-Tacoma International Airport1 transfer
icelandairFI455 · FI6838:25 PM London Heathrow Airport
31h15
3:40 AM Seattle-Tacoma International Airport1 transfer
icelandairFI455 · FI6818:25 PM London Heathrow Airport
28h30
12:55 AM Seattle-Tacoma International Airport1 transfer
Saturday, April 4
air_franceAF1381 · AF3385:15 AM London Heathrow Airport
13h00
6:15 PM Seattle-Tacoma International Airport1 transfer
unitedUA9553 · UA87175:30 AM London Heathrow Airport
13h50
7:20 PM Seattle-Tacoma International Airport1 transfer
lh_city_airlinesLH4233+lufthansaLH4905:30 AM London Heathrow Airport
13h50
7:20 PM Seattle-Tacoma International Airport1 transfer
sasSK500 · SK935 · SK34705:40 AM London Heathrow Airport
23h08
4:48 AM Seattle-Tacoma International Airport2 transfers
unitedUA123 · UA20446:45 AM London Heathrow Airport
24h14
6:59 AM Seattle-Tacoma International Airport1 transfer
unitedLH9348 · LH75047:00 AM London Heathrow Airport
18h46
1:46 AM Seattle-Tacoma International Airport1 transfer
unitedUA958 · UA18017:00 AM London Heathrow Airport
18h46
1:46 AM Seattle-Tacoma International Airport1 transfer
unitedUA958 · UA6237:00 AM London Heathrow Airport
16h03
11:03 PM Seattle-Tacoma International Airport1 transfer
american_airlinesBA1502+alaska_airlinesBA76187:20 AM London Heathrow Airport
16h41
12:01 AM Seattle-Tacoma International Airport1 transfer
unitedUA8263 · UA85257:30 AM London Heathrow Airport
21h23
4:53 AM Seattle-Tacoma International Airport1 transfer
delta_air_linesAF3587 · AF28158:20 AM London Heathrow Airport
17h38
1:58 AM Seattle-Tacoma International Airport1 transfer
unitedUA905 · UA20448:30 AM London Heathrow Airport
22h29
6:59 AM Seattle-Tacoma International Airport1 transfer
delta_air_linesAF3610 · AF27078:40 AM London Heathrow Airport
20h30
5:10 AM Seattle-Tacoma International Airport1 transfer
virgin_atlanticAF6756+delta_air_linesAF29108:55 AM London Heathrow Airport
19h05
4:00 AM Seattle-Tacoma International Airport1 transfer
unitedUA879 · UA5159:00 AM London Heathrow Airport
21h12
6:12 AM Seattle-Tacoma International Airport1 transfer
unitedUA879 · UA16069:00 AM London Heathrow Airport
17h44
2:44 AM Seattle-Tacoma International Airport1 transfer
american_airlinesBA1590 · BA24909:05 AM London Heathrow Airport
17h17
2:22 AM Seattle-Tacoma International Airport1 transfer
unitedUA17 · UA20449:25 AM London Heathrow Airport
21h34
6:59 AM Seattle-Tacoma International Airport1 transfer
unitedUA900 · UA10079:35 AM London Heathrow Airport
20h52
6:27 AM Seattle-Tacoma International Airport1 transfer
unitedUA900 · UA22799:35 AM London Heathrow Airport
16h00
1:35 AM Seattle-Tacoma International Airport1 transfer
unitedUA900 · UA17639:35 AM London Heathrow Airport
18h22
3:57 AM Seattle-Tacoma International Airport1 transfer
british_airwaysBA285+alaska_airlinesBA29479:45 AM London Heathrow Airport
17h43
3:28 AM Seattle-Tacoma International Airport1 transfer
delta_air_linesAF9301 · AF28289:45 AM London Heathrow Airport
15h41
1:26 AM Seattle-Tacoma International Airport1 transfer
delta_air_linesAF3678 · AF27349:55 AM London Heathrow Airport
13h54
11:49 PM Seattle-Tacoma International Airport1 transfer
unitedLH9356 · LH750410:05 AM London Heathrow Airport
15h41
1:46 AM Seattle-Tacoma International Airport1 transfer
unitedUA959 · UA180110:05 AM London Heathrow Airport
15h41
1:46 AM Seattle-Tacoma International Airport1 transfer
unitedUA26 · UA100710:25 AM London Heathrow Airport
20h02
6:27 AM Seattle-Tacoma International Airport1 transfer
unitedUA26 · UA201310:25 AM London Heathrow Airport
14h36
1:01 AM Seattle-Tacoma International Airport1 transfer
unitedUA26 · UA36010:25 AM London Heathrow Airport
17h41
4:06 AM Seattle-Tacoma International Airport1 transfer
british_airwaysBA281+alaska_airlinesBA644610:40 AM London Heathrow Airport
17h02
3:42 AM Seattle-Tacoma International Airport1 transfer
virgin_atlanticAF990410:40 AM London Heathrow Airport
10h20
9:00 PM Seattle-Tacoma International Airport0 transfersDirect
delta_air_linesAF3666 · AF250910:45 AM London Heathrow Airport
16h03
2:48 AM Seattle-Tacoma International Airport1 transfer
delta_air_linesAF3666 · AF234810:45 AM London Heathrow Airport
18h39
5:24 AM Seattle-Tacoma International Airport1 transfer
unitedUA147 · UA204411:00 AM London Heathrow Airport
19h59
6:59 AM Seattle-Tacoma International Airport1 transfer
unitedUA8203 · UA852511:05 AM London Heathrow Airport
17h48
4:53 AM Seattle-Tacoma International Airport1 transfer
unitedLH9260 · LH748411:15 AM London Heathrow Airport
16h38
3:53 AM Seattle-Tacoma International Airport1 transfer
unitedUA919 · UA32611:15 AM London Heathrow Airport
16h38
3:53 AM Seattle-Tacoma International Airport1 transfer
delta_air_linesAF3554 · AF584711:25 AM London Heathrow Airport
16h25
3:50 AM Seattle-Tacoma International Airport1 transfer
american_airlinesBA1538 · BA673011:30 AM London Heathrow Airport
17h27
4:57 AM Seattle-Tacoma International Airport1 transfer
virgin_atlanticAF9663+delta_air_linesAF234811:50 AM London Heathrow Airport
17h34
5:24 AM Seattle-Tacoma International Airport1 transfer
british_airwaysBA193+american_airlinesBA248911:55 AM London Heathrow Airport
16h21
4:16 AM Seattle-Tacoma International Airport1 transfer
unitedUA949 · UA100712:00 PM London Heathrow Airport
18h27
6:27 AM Seattle-Tacoma International Airport1 transfer
unitedUA949 · UA176312:00 PM London Heathrow Airport
15h57
3:57 AM Seattle-Tacoma International Airport1 transfer
icelandairFI451 · FI68112:05 PM London Heathrow Airport
12h50
12:55 AM Seattle-Tacoma International Airport1 transfer
british_airwaysBA299+american_airlinesBA517612:10 PM London Heathrow Airport
17h54
6:04 AM Seattle-Tacoma International Airport1 transfer
unitedUA4 · UA51512:40 PM London Heathrow Airport
17h32
6:12 AM Seattle-Tacoma International Airport1 transfer
british_airwaysBA67+american_airlinesBA673012:45 PM London Heathrow Airport
16h12
4:57 AM Seattle-Tacoma International Airport1 transfer
westjetWS1 · WS15521:10 PM London Heathrow Airport
32h09
9:19 PM Seattle-Tacoma International Airport1 transfer
unitedLH9354 · LH75041:10 PM London Heathrow Airport
36h50
2:00 AM Seattle-Tacoma International Airport1 transfer
british_airwaysBA87+horizon_airBA75721:15 PM London Heathrow Airport
12h48
2:03 AM Seattle-Tacoma International Airport1 transfer
american_airlinesBA1520 · BA65451:25 PM London Heathrow Airport
16h44
6:09 AM Seattle-Tacoma International Airport1 transfer
british_airwaysBA287+alaska_airlinesBA75431:30 PM London Heathrow Airport
16h46
6:16 AM Seattle-Tacoma International Airport1 transfer
american_airlinesBA1546 · BA51761:45 PM London Heathrow Airport
16h19
6:04 AM Seattle-Tacoma International Airport1 transfer
american_airlinesBA1546 · BA47321:45 PM London Heathrow Airport
17h39
7:24 AM Seattle-Tacoma International Airport1 transfer
unitedUA263 · UA3601:50 PM London Heathrow Airport
14h16
4:06 AM Seattle-Tacoma International Airport1 transfer
air_canadaLH6812 · LH67762:05 PM London Heathrow Airport
12h15
2:20 AM Seattle-Tacoma International Airport1 transfer
british_airwaysBA269+alaska_airlinesBA76162:05 PM London Heathrow Airport
16h35
6:40 AM Seattle-Tacoma International Airport1 transfer
unitedUA8581 · UA82492:05 PM London Heathrow Airport
12h15
2:20 AM Seattle-Tacoma International Airport1 transfer
air_canadaLH6812+jazz_aviationAC88102:05 PM London Heathrow Airport
15h48
5:53 AM Seattle-Tacoma International Airport1 transfer
british_airwaysBA297+american_airlinesBA47322:15 PM London Heathrow Airport
17h09
7:24 AM Seattle-Tacoma International Airport1 transfer
british_airwaysBA297+american_airlinesBA51762:15 PM London Heathrow Airport
15h49
6:04 AM Seattle-Tacoma International Airport1 transfer
unitedUA15 · UA20442:20 PM London Heathrow Airport
16h39
6:59 AM Seattle-Tacoma International Airport1 transfer
british_airwaysBA267+horizon_airBA75362:40 PM London Heathrow Airport
12h44
3:24 AM Seattle-Tacoma International Airport1 transfer
british_airwaysBA267+horizon_airBA29942:40 PM London Heathrow Airport
14h48
5:28 AM Seattle-Tacoma International Airport1 transfer
unitedUA941 · UA13303:00 PM London Heathrow Airport
27h02
6:02 PM Seattle-Tacoma International Airport1 transfer

This is the last flight of the day.

Find all the dates and times for this journey

Compare prices and tickets London Heathrow Airport to Seattle-Tacoma International Airport by flight

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Why should you book London Heathrow Airport to Seattle-Tacoma International Airport flights with Omio?

British Airways as well as American Airlines, Aer Lingus, Icelandair and more offer flights services from London Heathrow Airport to Seattle-Tacoma International Airport.
Omio is an official ticket reseller for all your travel options from London Heathrow Airport to Seattle-Tacoma International Airport.

Why book with Omio vs British Airways?

  • Compare with other providers: On Omio, you can not only buy tickets for British Airways, but also compare tickets for the likes of American Airlines, Aer Lingus or Icelandair to find the best option for your trip from London Heathrow Airport to Seattle-Tacoma International Airport.
  • Designed for International Travelers: Omio is in your language including 24/7 customer service and offers multiple payment options, including PayPal, credit cards, and bank transfer, in your preferred currency.

Why book with Omio over Skyscanner, Trip or Edreams?

  • Compare with other providers: On Omio, you can also compare tickets for the likes of American Airlines, Aer Lingus or Icelandair to find the best option for your trip from London Heathrow Airport to Seattle-Tacoma International Airport.

Airlines: British Airways, American Airlines, Aer Lingus, Icelandair from London Heathrow Airport to Seattle-Tacoma International AirportFind the best flights between London Heathrow Airport to Seattle-Tacoma International Airport with Omio's travel partners British Airways, American Airlines, Aer Lingus, Icelandair from $751 (€612). We can find you the best deals, schedules and tickets when comparing and booking the best trip.

British Airways

About
British Airways (BA) is the United Kingdom’s flag carrier airline with headquarters in London near its main hub at London Heathrow Airport (LHR). BA is the second largest UK-based airline in terms of fleet size and number of passengers carried. Known as a full-service global airline, British Airways offers year-round low fares to destinations worldwide and flies to and from centrally-located airports. Its extensive global route network includes more than 170 destinations in nearly 80 countries throughout Europe, North America, South America, Asia, Africa and Australia. syn p British Airways (BA) is the flag carrier airline of the United Kingdom with its headquarters in London near its main hub at London Heathrow Airport (LHR). Known as a full-service global airline, BA offers low fares year-round to destinations around the globe and flies to and from centrally-located airports. Its extensive global route network includes more than 170 destinations in nearly 80 countries throughout Europe, North America, South America, Asia, Africa and Australia. BA is also the second largest airline based in the UK in terms of its fleet size and number of passengers carried.
Luggage & cancellation policy
British Airways frequency
22 a day
Luggage included
Economy Basic includes 1 cabin bag (max 23kg, 56x45x25cm) plus 1 personal item (40x30x15cm)
Additional luggage
Additional checked bags can be purchased, with prices varying by route and fare class
Cancellation Policy
Cancellation policy depends on ticket type - Basic tickets non-refundable, Flexible tickets can be cancelled for a full refund
Pregnant on board
Travel permitted until end of 36th week for single pregnancies, end of 32nd week for multiple pregnancies. Medical clearance required after 28th weeks
Unaccompagned minor
Young flyers aged 5-11 can travel alone using British Airways' Skyflyer Solo service. Service must be booked in advance and is available on most routes
Amenities on board the airplane
Wifi
Food sold onboard
USB plugs
Accessibility
British Airways provides assistance for passengers with reduced mobility, including wheelchair assistance and special assistance through airports.
Pets
Pets travel in the hold except assistance dogs. Advance booking required. Only cats and dogs accepted on most routes
Entertaiment on board

American Airlines

About
American Airlines is one of the largest airlines in the world, connecting travelers to hundreds of destinations across the United States, Latin America, Europe, Asia, and beyond. Operating from major hubs such as Dallas/Fort Worth, Miami, and Charlotte, American offers a wide range of travel options. Passengers can choose from Economy with affordable fares, Premium Economy with extra space, or Business and First Class featuring flat-bed seats, premium dining, and lounge access. With a modern fleet and membership in the oneworld alliance, American Airlines combines global reach with comfort and reliability.
Luggage & cancellation policy
American Airlines frequency
13 a day
Luggage included
1 carry-on bag (22 x 14 x 9 inches) and 1 personal item (18 x 14 x 8 inches) included in most fares
Additional luggage
Checked bags fees vary by route. First checked bag typically $30, second $40 on domestic flights
Cancellation Policy
Basic Economy tickets cannot be changed or refunded. Other fares allow changes with fee, refunds subject to fare rules.
Pregnant on board
Passengers can fly up to 36 weeks for single pregnancies, 32 weeks for multiple pregnancies. Medical certificate required within 7 days of departure if within 4 weeks of due date.
Unaccompagned minor
Children ages 5-14 can travel alone using American Airlines Unaccompanied Minor Service. Service fee is $150 each way.
Amenities on board the airplane
Wifi
Food sold onboard
USB plugs
Accessibility
American Airlines provides wheelchair assistance and special services for passengers with disabilities. Assistance must be requested at least 48 hours before departure.
Pets
Small dogs and cats allowed in cabin for $125 fee. Must be in approved carrier under seat. Service animals allowed.
Entertaiment on board

Aer Lingus

About
Aer Lingus is Ireland's national airline, established in 1936. It operates over 100 routes, connecting Europe and North America from its main hub at Dublin Airport, as well as from Cork, Shannon, and Knock. A member of the International Airlines Group (IAG), Aer Lingus is recognized as a 4-star airline by Skytrax. The airline is known for its Irish hospitality and offers a range of services, including its AerClub loyalty program. Aer Lingus utilizes a modern fleet of Airbus aircraft, including the A321neoLR, for efficiency, comfort, and safety.
Luggage & cancellation policy
Aer Lingus frequency
12 a day
Luggage included
1 small bag (25x33x20cm) and 1 cabin bag (55x40x24cm)
Additional luggage
23kg checked bag can be purchased
Cancellation Policy
Free cancellation within 24 hours of booking if flight is more than 7 days away. After that, fees apply based on fare type.
Pregnant on board
Up to end of 36th week (32nd week for multiple pregnancies). Medical certificate required if complications
Unaccompagned minor
Young flyer service available for ages 5-11. Must be booked at least 72 hours before departure
Amenities on board the airplane
Wifi
USB plugs
Accessibility
Aer Lingus provides wheelchair assistance and special assistance for passengers with reduced mobility
Pets
Small dogs and cats allowed in cabin (6kg including carrier) and cargo hold (32kg including container)
Entertaiment on board

Icelandair

About
Icelandair is the flag carrier of Iceland, with roots tracing back to 1937. It operates as part of the Icelandair Group and is headquartered in Hafnarfjörður, Iceland. The airline's business strategy leverages Iceland's unique geographical position midway between North America and Europe, offering transatlantic flights with a convenient stopover option in Iceland. Icelandair serves destinations on both sides of the Atlantic from its main hub at Keflavík International Airport, and also operates domestic flights from Reykjavík Airport. The airline is known for promoting Iceland as a tourist destination and providing a comfortable flying experience with Icelandic hospitality.
Luggage & cancellation policy
Average Duration
12h 45m
Cheapest Price
$748 (€609)
Icelandair frequency
5 a day
Luggage included
One carry-on bag (10kg) and one personal item included in Economy
Additional luggage
Extra bags can be purchased, prices vary by route
Cancellation Policy
24-hour cancellation policy for full refund, after that fees apply based on fare type
Pregnant on board
Up to week 36 of pregnancy. After week 28, medical certificate required
Unaccompagned minor
Available for children 5-17, must be booked at least 48 hours in advance. Service fee applies
Amenities on board the airplane
Wifi
USB plugs
Accessibility
Wheelchair assistance available, must be requested at least 48 hours before departure
Pets
Small pets in cabin, larger ones in hold. Must be booked in advance
Entertaiment on board

FAQs: London Heathrow Airport to Seattle-Tacoma International Airport Flight

Find answers to the most common questions about traveling from London Heathrow Airport to Seattle-Tacoma International Airport by flight. From journey times and ticket prices to direct connections, first and last departures, and even whether the route is scenic, our FAQs cover everything you need to plan your trip. Whether you’re looking for the fastest flight, the cheapest option, or tips for making the most of your visit at Seattle-Tacoma International Airport, this guide helps you travel smarter and with confidence.

FAQs
Cheap plane tickets from London Heathrow Airport to Seattle-Tacoma International Airport can start from as little as $751 (€612) when you book in advance. The average flight ticket price for London Heathrow Airport to Seattle-Tacoma International Airport is $1155 (€941) ; however, prices vary depending on the time of day and class and they tend to be more expensive on the day.
The average journey time by plane from London Heathrow Airport to Seattle-Tacoma International Airport is 14h 45m to travel the 4786 miles (7703 km) long route. Journey times can vary on weekends and holidays, so use our Journey Planner to search for a specific date.
The earliest flight from London Heathrow Airport to Seattle-Tacoma International Airport leaves at 6:35 AM. Plan your trip with the Journey Planner from Omio.
The latest flight from London Heathrow Airport to Seattle-Tacoma International Airport leaves at 2:50 PM.
Yes, there are 5 direct flights a day from London Heathrow Airport to Seattle-Tacoma International Airport with British Airways. Schedules can vary on holidays or weekends with fewer direct flights.
When taking a flight from London Heathrow Airport to Seattle-Tacoma International Airport, you can count on British Airways, American Airlines, Aer Lingus, Icelandair for the best way to get you to Seattle-Tacoma International Airport. You can also check all possible airlines who offer a service between London Heathrow Airport and Seattle-Tacoma International Airport and compare the amenities they offer before buying a plane ticket.
The cheapest month for a flight from London Heathrow Airport to Seattle-Tacoma International Airport is December.
Yes, you can take a flight between London Heathrow Airport and Seattle-Tacoma International Airport.
Since neither London Heathrow Airport nor Seattle-Tacoma International Airport are in the Schengen Area, passport requirements depend on the specific immigration rules of United Kingdom and United States. Entry and visa requirements can be subject to change. For the latest information, check with your destination's embassy or consulate.
There is a time difference of 8 h between London Heathrow Airport and Seattle-Tacoma International Airport all year round.
For international flights we recommend to arrive 2.5 to 3 hours before departure. Please check the website of your departure airport if in doubt. Some airports may offer booking time slots for security checks or offer additional information on when to get there based on time of day.
Most airlines permit carry-on bags that fit within specific dimensions (e.g., 22 x 14 x 9 inches or 56 x 36 x 23 cm), including handles and wheels. Bags must fit in the overhead bin or under the seat in front of you.
Many airlines impose weight limits, commonly ranging between 7 kg (15 lbs) and 12 kg (26 lbs). Typically, passengers are allowed one carry-on bag and one personal item (for example a purse, laptop bag, or backpack). Personal items must fit under the seat in front of you. Budget Airlines (like Ryanair or Wizz Air) have stricter size and weight limits, often requiring fees for larger carry-ons. Full-Service Airlines have more lenient policies, sometimes including more spacious dimensions or higher weight limits depending on your ticket class.
The list of items prohibited on an airplane varies by country and airline, but in general, the following items are not allowed in carry-on or checked baggage: Weapons and self-defence items, sharp objects, flammable materials, explosives, toxic substances, or liquids over 100ml (except for medications and baby essentials). In checked baggage, firearms (without authorization), explosives, large lithium batteries, and hazardous chemicals are prohibited. Electronic cigarettes must be in carry-on bags, while alcohol and dry ice have restrictions. Always check with your airline for specific regulations.

popular airports

Popular airports from London Heathrow Airport to Seattle-Tacoma International Airport

London
Seattle
The major airport for departures in London is London Heathrow Airport. Find all the information you need to know about services, amenities and connections at London Heathrow Airport for your trip from London to Seattle.
Amenities at airport
WifiWifi
ShoppingShopping
ParkingParking
ATMATM
TaxisTaxis
AccessibilityAccessibility
WCWC
ShowerShower
LoungeLounge
Lost and Found OfficeLost and Found Office
information
ticketOfficeHours
Distance to city center
23 km
carConnection
Car connection
M4, Junction 4
Wifi
Wifi
  • Free Wi-Fi available throughout the airport for up to 4 hours.
Shopping
Shopping
  • Shops are located throughout all terminals, including Harrods and World Duty Free.
Parking
Parking
  • Short Stay parking available near each terminal, approximately 6.3€ (£5.30) for 30 minutes.
Taxis
Taxis
  • Available outside the terminal.
Accessibility
Accessibility
  • Assistance.
WC
WC
  • Available throughout the airport, including accessible facilities.
Shower
Shower
  • Yes
Lounge
Lounge
  • Lounges available in all terminals, including British Airways and Plaza Premium lounges.
Lost and Found Office
Lost and Found Office
  • Located at each terminal, contact Heathrow Airport Lost Property.
Public transit options for London Heathrow Airport
  • Bus: 105, 111, 140, 285, 423
  • Metro: Piccadilly Line
  • Train: Heathrow Express, TfL Rail

More options for your journey from London Heathrow Airport to Seattle-Tacoma International Airport

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