Denver, CO DEN to Seattle, WA SEA flight with Alaska Airlines

Wed, Nov 05
+ Add return
Alaska Airlines
Frontier Airlines
United
Vueling Airlines
easyJet
1,000+ travel companies
Alaska Airlines
Frontier Airlines
United
Vueling Airlines
easyJet
1,000+ travel companies
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Journey information

Overview: Denver, CO to Seattle, WA flight

USAUSA
USAUSA
Icon of flight
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
1019 miles (1641 km)
Average flight duration
3h 2m
Cheapest ticket price
$48 (€39)
Flights per day
45
Direct flights
7
Fastest flight
2h 59m
Cheapest month to travel
October
First flight
00:05
Last flight
23:58

Key Takeaways

Train Ticket Prices
  • Budget Options: Train tickets from Denver, CO to Seattle, WA start from as low as $48 (€39) if booked well in advance.
  • Standard Fares: Typically, trains cost $129 (€106) depending on the train type and class.
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 Denver, CO to Seattle, WA

Showing times and prices for Nov 05

Cheapest price

$113

Average price

$180

Fastest journey

2 h 59 m

Average duration

3 h 55 m

Flights per day

2

Distance

1641 km

Cheap tickets

The best way to find a cheap flight ticket from Denver, CO to Seattle, WA is to book your journey as far in advance as possible and to avoid traveling at rush hour.

The average ticket from Denver, CO to Seattle, WA will cost around $180 if you buy it on the day, but the cheapest tickets can be found for only $113.

Fast flights

Of the 2 flights that leave Denver, CO for Seattle, WA onWed, Nov 05, 2 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.

On Wed, Nov 05 the direct flights cover the 1641 km distance in an average of 3 h 55 m but if you time it right, some flights will get you there in just 2 h 59 m .

On Wed, Nov 05 the longest flights will take 4 h 51 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.

Alaska Airlines
06:49PM2h59
Denver, CO
09:48PMSeattle, WA
$1131One-way
0 transfers
Alaska Airlines
05:33PM4h51
Denver, CO
10:24PMSeattle, WA
$2471One-way
0 transfers

Travel Information

Compare bus, train, and flight for Denver, CO to Seattle, WA

Omio recommends booking the train as it is the most popular option from Denver, CO to Seattle, WA among Omio's users. If you are prioritising price take the flight with prices starting from €39. For those with little time consider booking a flight which can get you there in 3h 2m. The ticket price range depends on the travel mode: a flight costs an average of €39, and a train costs an average of €178.

Distance: 1019 miles (1641 km)

Compare flight with

Flight
Most popular
Train
Bus

€106

Average price

Cheapest

€710

Average price

€168

Average price

6h 2m

Average total duration

Fastest

3h 2m

Onboard

+

3h 0m

Additional time*

51h 47m

Average total duration

51h 17m

Onboard

+

30m

Additional time*

33h 40m

Average total duration

33h 10m

Onboard

+

30m

Additional time*

Alaska Airlines

Most popular airline

Amtrak

Most popular train company

Greyhound

Most popular bus company

Direct Options

Direct Options

Direct Options

Live departures

Denver, CO to Seattle, WA flight times

The table below shows live departures for Denver, CO to Seattle, WA flights for today, Tuesday, November 4. You can also manually refresh the results below to see updated flight journeys.

Last updated at 6:04 PM

ProviderDepartsDurationArrivesTransfers
Tickets
american_airlinesAA1313 · AA23617:10 PM Denver International Airport
11h10
6:20 AM Seattle-Tacoma International Airport1 transfer
american_airlinesAA2579 · AA7277:26 PM Denver International Airport
7h34
3:00 AM Seattle-Tacoma International Airport1 transfer
american_airlinesAA2579 · AA12417:26 PM Denver International Airport
9h50
5:16 AM Seattle-Tacoma International Airport1 transfer
american_airlinesAA2579 · AA30757:26 PM Denver International Airport
12h16
7:42 AM Seattle-Tacoma International Airport1 transfer
american_airlinesAA2833 · AA32217:33 PM Denver International Airport
11h45
7:18 AM Seattle-Tacoma International Airport1 transfer
unitedUA1283 · UA20447:45 PM Denver International Airport
11h01
6:46 AM Seattle-Tacoma International Airport1 transfer
american_airlinesAA2767 · AA23637:51 PM Denver International Airport
11h35
7:26 AM Seattle-Tacoma International Airport1 transfer
unitedUA631 · UA5484 · UA56558:25 PM Denver International Airport
10h05
6:30 AM Seattle-Tacoma International Airport2 transfers
unitedUA631 · UA564 · UA10078:25 PM Denver International Airport
11h19
7:44 AM Seattle-Tacoma International Airport2 transfers
unitedUA631 · UA564 · UA20198:25 PM Denver International Airport
8h26
4:51 AM Seattle-Tacoma International Airport2 transfers
unitedUA5304 · UA5732 · UA20198:31 PM Denver International Airport
8h20
4:51 AM Seattle-Tacoma International Airport2 transfers
unitedUA5304 · UA5732 · UA10078:31 PM Denver International Airport
11h13
7:44 AM Seattle-Tacoma International Airport2 transfers
unitedUA1252 · UA20198:45 PM Denver International Airport
8h06
4:51 AM Seattle-Tacoma International Airport1 transfer
american_airlinesAA420 · AA12419:49 PM Denver International Airport
7h27
5:16 AM Seattle-Tacoma International Airport1 transfer
american_airlinesAA420 · AA30759:49 PM Denver International Airport
9h53
7:42 AM Seattle-Tacoma International Airport1 transfer
unitedUA1023 · UA221110:27 PM Denver International Airport
8h01
6:28 AM Seattle-Tacoma International Airport1 transfer
unitedUA489 · UA245610:41 PM Denver International Airport
8h05
6:46 AM Seattle-Tacoma International Airport1 transfer
unitedUA201310:55 PM Denver International Airport
3h05
2:00 AM Seattle-Tacoma International Airport0 transfersDirect
unitedUA2633 · UA201910:59 PM Denver International Airport
5h52
4:51 AM Seattle-Tacoma International Airport1 transfer
unitedUA1195 · UA565511:05 PM Denver International Airport
7h25
6:30 AM Seattle-Tacoma International Airport1 transfer
unitedUA100712:55 AM Denver International Airport
6h49
7:44 AM Seattle-Tacoma International Airport0 transfersDirect
unitedUA2681 · UA24622:05 AM Denver International Airport
6h54
8:59 AM Seattle-Tacoma International Airport1 transfer
unitedUA17292:30 AM Denver International Airport
3h03
5:33 AM Seattle-Tacoma International Airport0 transfersDirect
american_airlinesAA3299 · AA32526:59 AM Denver International Airport
19h51
2:50 AM Seattle-Tacoma International Airport1 transfer
american_airlinesAA3299 · AA27756:59 AM Denver International Airport
12h41
7:40 PM Seattle-Tacoma International Airport1 transfer
alaska_airlines5:33 PM Denver, CO
4h51
10:24 PM Seattle, WA0 transfersDirect

This is the last flight of the day.

Find all the dates and times for this journey

Compare prices and tickets Denver, CO to Seattle, WA by bus, train, or flight

Compare bus, train, and flight prices over the next three weeks. See the best deals at a glance, find the lowest fares, and choose the option that fits your budget.

Wed
Nov 05
Thu
Nov 06
Fri
Nov 07
Sat
Nov 08
Sun
Nov 09
Mon
Nov 10
Tue
Nov 11

Airlines: Alaska Airlines, Frontier Airlines, United from Denver, CO to Seattle, WAFind the best flights between Denver, CO to Seattle, WA with Omio's travel partners Alaska Airlines, Frontier Airlines, United from $48 (€39). We can find you the best deals, schedules and tickets when comparing and booking the best trip.

Alaska Airlines

About
Alaska Airlines, headquartered in SeaTac, Washington, is a major U.S. airline and the fifth-largest in North America by scheduled passengers carried as of 2024. Along with its regional partners, Horizon Air and SkyWest Airlines, Alaska Airlines operates a route network primarily connecting cities along the West Coast of the United States, including Alaska and Hawaii, to over 100 destinations in the contiguous U.S., the Bahamas, Belize, Canada, Costa Rica, Guatemala, and Mexico. The airline is a member of the Oneworld alliance, offering passengers access to a broad global network. Alaska Airlines is known for its customer service and loyalty program, Mileage Plan, and offers First Class, Premium Class, and Main Cabin seating options. The airline's primary hub is Seattle-Tacoma International Airport. In 2024, its parent company, Alaska Air Group, acquired Hawaiian Airlines.
Luggage & cancellation policy
Average Duration
2h 57m
Cheapest Price
$113 (€93)
Luggage included
1 carry-on bag (22 x 14 x 9) and 1 personal item included
Additional luggage
Checked bags fees start at $30 for first bag, $40 for second bag
Cancellation Policy
Saver fares are non-refundable. Main and First Class fares are refundable with fee, depending on fare type and elite status
Pregnant on board
Passengers can fly up to 36 weeks pregnant. After 28 weeks, medical certificate required
Unaccompagned minor
Unaccompanied minor service available for children ages 5-17. Service fee is $50 per direction on nonstop flights
Amenities on board the airplane
Wifi
USB plugs
Accessibility
Alaska Airlines provides wheelchair assistance and special services for passengers with disabilities, including meet-and-assist services and accessible seating
Pets
Pets allowed in cabin and cargo hold. Service animals welcome. Fees apply for pets in cabin ($100)
Entertaiment on board

United

About
United Airlines is one of the USA’s leading carriers, operating both domestic and international routes. For your next trip, you can choose from Economy, Premium Economy, and Business Class fares.
Luggage & cancellation policy
Average Duration
3h 0m
Cheapest Price
$152 (€124)
Luggage included
One carry-on bag (9 x 14 x 22 inches) and one personal item (9 x 10 x 17 inches)
Additional luggage
Checked baggage fees vary by route and fare class. Most economy tickets allow purchase of up to 2 checked bags
Cancellation Policy
Basic Economy tickets are non-refundable, other fares allow changes/cancellations with fee depending on fare type and elite status
Pregnant on board
Passengers can fly through the end of their 36th week for single pregnancies, 32nd week for multiple pregnancies. Medical certificate required within 4 weeks of flight
Unaccompagned minor
Children ages 5-14 can travel as unaccompanied minors with mandatory service. Ages 15-17 optional service available
Amenities on board the airplane
Wifi
USB plugs
Accessibility
United provides assistance for passengers with disabilities, including wheelchair assistance and support for passengers with visual or hearing impairments
Pets
Small dogs and cats in cabin, service animals allowed. Pets must be in approved carriers and booked in advance
Entertaiment on board

Frontier Airlines

About
Frontier Airlines is a major American ultra-low-cost carrier headquartered in Denver, Colorado, operating flights to over 120 destinations across the United States, Caribbean, Mexico, and Central America. Known for its "Low Fares Done Right" philosophy, Frontier focuses on offering affordable travel by allowing passengers to choose and pay only for the services they need, such as seat selection or baggage. The airline is also recognized for its commitment to fuel efficiency, claiming to be "America's greenest airline" due to its modern, lightweight aircraft and operational practices. A distinctive feature of Frontier is the animal featured on the tail of each aircraft, highlighting North American wildlife.
Luggage & cancellation policy
Average Duration
3h 1m
Cheapest Price
$82 (€67)
Luggage included
Personal item (18 x 14 x 8 inches) included
Additional luggage
Checked bag fees start at $79 per bag
Cancellation Policy
Non-refundable tickets, changes permitted for fee starting at $79 plus fare difference
Pregnant on board
Pregnant women can travel up to 7 days before due date, medical certificate required after 36 weeks
Unaccompagned minor
Children ages 5-14 can travel alone for $100 fee each way, must be nonstop flight only
Amenities on board the airplane
Wifi
Accessibility
Frontier Airlines offers assistance for passengers with disabilities, including wheelchair service and boarding assistance. Passengers are encouraged to request these services in advance to ensure availability and proper arrangements.

FAQs: Denver, CO to Seattle, WA Flight

Find answers to the most common questions about traveling from Denver, CO to Seattle, WA 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, WA, this guide helps you travel smarter and with confidence.
FAQs
Cheap plane tickets from Denver, CO to Seattle, WA can start from as little as $62 (€51) when you book in advance. The average flight ticket price for Denver, CO to Seattle, WA is $150 (€123); 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 Denver, CO to Seattle, WA is 2 h 55 min   to travel the 1017 mile (1641 km) long journey, with around there are 32 flights per day. Journey times can vary on weekends and holidays.
The earliest flight from Denver, CO to Seattle, WA leaves at 12: 05AM. Plan your trip with the Journey Planner   from Omio.
The latest flight from Denver, CO to Seattle, WA leaves at 11: 57PM.
There are 32 flights a day from Denver, CO to Seattle, WA which require at least one change with Alaska Airlines or Frontier Airlines. Schedules can vary on holidays or weekends with fewer flights.
When taking a flight from Denver, CO to Seattle, WA, you can count on Alaska Airlines or Frontier Airlines for the best way to get you to Seattle, WA. You can also check all possible airlines who offer a service from Denver, CO to Seattle, WA and compare the amenities they offer before buying a plane ticket.
The cheapest month to travel from Denver, CO to Seattle, WA by plane is October.
It's helpful to compare your options as there are 3 ways to travel to Seattle, WA from Denver, CO including taking a train, flight or bus.
Since neither Denver, CO nor Seattle, WA are in the Schengen Area, passport requirements depend on the specific immigration rules of USA and USA. 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 1 h between Denver, CO and Seattle, WA all year round.
The best events to attend in Seattle, WA include:
  • Seafair, a summer festival featuring hydroplane races, parades, and cultural events
  • Seattle International Film Festival, one of the largest film festivals in the U. S. Showcasing independent films
  • Bumbershoot, an annual music and arts festival held over Labor Day weekend
  • Seattle Pride Parade, a celebration of LGBTQ+ pride with a colorful parade through downtown.
The best holidays to experience in Seattle, WA include:
  • Independence Day, fireworks and celebrations marking the nation's birthday
  • Thanksgiving, a time for family gatherings and seasonal festivities
  • Christmas, holiday lights and decorations creating a festive atmosphere
  • New Year's Eve, lively celebrations welcoming the new year with fireworks and events.
The best seasons to visit Seattle, WA are Spring or Fall. The best weather to explore Seattle, WA is during April-June or September-November.
For domestic flights we recommend to arrive 1.5 to 2 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 Denver, CO to Seattle, WA

Denver
Seattle
The major airport for departures in Denver is Denver International Airport. Find all the information you need to know about services, amenities and connections at Denver International Airport for your trip from Denver to Seattle.
Amenities at airport
WifiWifi
ShoppingShopping
ParkingParking
DiningDining
ATMATM
TaxisTaxis
AccessibilityAccessibility
WCWC
HotelHotel
ShowerShower
LoungeLounge
Lost and Found OfficeLost and Found Office
Car RentalCar Rental
information
ticketOfficeHours
Distance to city center
18 km
carConnection
Car connection
Peña Blvd, Exit 284
Wifi
Wifi
  • Free Wi-Fi available throughout the airport.
Shopping
Shopping
  • Shops located in Jeppesen terminal and concourses, including Duty-Free and local brands.
Parking
Parking
  • Parking available, approximately 4.7€ ($5) per hour, parkade adjacent to terminal.
Dining
Dining
  • Various restaurants in Jeppesen terminal and concourses, including American and intertiol cuisine.
Taxis
Taxis
  • Available outside the terminal.
Accessibility
Accessibility
  • Elevators, ramps
WC
WC
  • Available throughout the airport.
Hotel
Hotel
  • Westin Hotel connected to the terminal.
Shower
Shower
  • Showers available at the Westin Hotel, approximately $20.
Lounge
Lounge
  • Multiple lounges available, including United Club and Delta Sky Club.
Lost and Found Office
Lost and Found Office
  • Lost and Found located in Jeppesen terminal, Level 5.
Car Rental
Car Rental
  • Car rental services available on airport property, shuttle service to rental car lots.
Public transit options for Denver International Airport
  • A Line train, Denver Airport Station, 37 minutes to Union Station

Most popular flights to and from Seattle, WA and Denver, CO

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