Portland, OR PDX to St. Louis, MO STL flight with United

Sun, Sep 20
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Journey information

Overview: Portland, OR to St. Louis, MO flight

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Flights from Portland, OR to St. Louis, MO depart on average 58 times per day, taking around 6h 29m. Cheap flight tickets for this journey start at $221 (€181) if you book in advance.

The earliest flight runs at 00:43, the last at 23:58. The fastest flight covers the 1719 miles (2767 km) distance in 3h 48m. June 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
1719 miles (2767 km)
Average flight duration
6h 29m
Cheapest ticket price
$221 (€181)
Flights per day
58
Fastest flight
3h 48m
First flight
12:43 AM
Last flight
11:58 PM
Cheapest Month
Jun
Cheapest Day
Mon
High Season
Jan - Mar
Low Season
Jul - Sep
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 Portland, OR to St. Louis, MO

Showing times, prices and bookable tickets for Sep 26

Cheapest price on Sep 26

$131

Average ticket price on Sep 26

$300

Fastest journey on Sep 26

6 h 49 m

Average journey duration on Sep 26

7 h 45 m

Flights on Sep 26

5

Distance

2767 km

Cheap tickets

The best way to find a cheap flight ticket from Portland, OR to St. Louis, MO is to book your journey as far in advance as possible and to avoid traveling at rush hour.

The average ticket from Portland, OR to St. Louis, MO will cost around $300 if you buy it on the day, but the cheapest tickets can be found for only $131.

Fast flights

On Sat, Sep 26, we found 5 flights from Portland, OR to St. Louis, MO, including 5 direct services.

On Sat, Sep 26 the direct flights cover the 2767 km distance in an average of 7 h 45 m but if you time it right, some flights will get you there in just 6 h 49 m .

On Sat, Sep 26 the longest flights will take 9 h 6 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.

  • American Airlines
    7:35 AM7h06
    Portland, OR
    2:41 PMSt. Louis, MO
    $1311One-way
    0 transfers
  • American Airlines
    5:44 AM8h51
    Portland, OR
    2:35 PMSt. Louis, MO
    $1781One-way
    0 transfers
  • American Airlines
    7:59 AM9h06
    Portland, OR
    5:05 PMSt. Louis, MO
    $2461One-way
    0 transfers
  • American Airlines
    6:59 AM6h52
    Portland, OR
    1:51 PMSt. Louis, MO
    $3201One-way
    0 transfers
  • American Airlines
    10:10 PM6h49
    Portland, OR
    4:59 AMSt. Louis, MO
    $6241One-way
    0 transfers

Travel Information

Compare train, bus, and flight for Portland, OR to St. Louis, MO

Omio recommends booking the train as it is the most popular option from Portland, OR to St. Louis, MO among Omio's users. If you are prioritising price, take the bus, with an average ticket price of $378 For those with little time, consider booking a flight, which has an average total journey time of 8h 29m. Average ticket prices depend on the travel mode: a bus costs an average of $378, while a train costs an average of $955.

Distance: 1719 miles (2767 km)

Compare flight with

Flight
Most popular
Train
Bus
Driving

$632

Average price

$955

Average price

$378

Average price

Cheapest

$416

Average price

(fuel + tolls)

8h 29m

Average total duration

Fastest

6h 29m

Onboard

+

2h 0m

Additional time*

59h 58m

Average total duration

59h 28m

Onboard

+

30m

Additional time*

57h 21m

Average total duration

56h 51m

Onboard

+

30m

Additional time*

29h 55m

Average total duration

(door-to-door)

United

Most popular airline

Amtrak

Most popular train company

Greyhound

Most popular bus company

Your own car or car rental

Direct Options

Direct Options

Direct Options

Direct Options

The cheapest way to travel from Portland, OR to St. Louis, MO is a bus with an average price of $378 (€309).

This is compared to other travel options from Portland, OR to St. Louis, MO:

A bus is $254 (€208) less than a flight for this route with tickets for a flight from Portland, OR to St. Louis, MO costing on average $632 (€517).

A bus is $577 (€472) less than a train for this route with tickets for a train from Portland, OR to St. Louis, MO costing on average $955 (€781).

The fastest way to travel from Portland, OR to St. Louis, MO is by flight with an average journey time of 6h 29m.

Other travel options to St. Louis, MO take longer:

Bus takes on average 56h 51m.

Train takes on average 59h 28m.

It's helpful to compare your options as there are 3 ways to travel between Portland, OR and St. Louis, MO including taking a train, bus, and flight.
We recommend using the train as it is the most popular way to get from Portland, OR to St. Louis, MO among Omio's users.

Live departures

Portland, OR to St. Louis, MO flight times

The table below shows live departures for Portland, OR to St. Louis, MO flights for today, Saturday, September 19. You can also manually refresh the results below to see updated flight journeys.

Last updated at
ProviderDepartsDurationArrivesTransfers
Tickets
United6:10 AM Portland, OR
11h17
5:27 PM St. Louis, MO0 transfersDirect
American Airlines1:22 PM Portland, OR
8h19
9:41 PM St. Louis, MO0 transfersDirect
Alaska Airlines2:00 PM Portland, OR
5h51
7:51 PM St. Louis, MO0 transfersDirect
American Airlines8:04 PM Portland, OR
9h18
5:22 AM St. Louis, MO0 transfersDirect
American Airlines9:06 PM Portland, OR
6h52
3:58 AM St. Louis, MO0 transfersDirect
Alaska Airlines9:45 PM Portland, OR
7h14
4:59 AM St. Louis, MO0 transfersDirect
American Airlines10:50 PM Portland, OR
7h09
5:59 AM St. Louis, MO0 transfersDirect

This is the last flight of the day.

Find all the dates and times for this journey

Compare prices and tickets Portland, OR to St. Louis, MO by train, bus, or flight

Compare train, bus, 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.

Sun
Sep 20
Mon
Sep 21
Tue
Sep 22
Wed
Sep 23
Thu
Sep 24
Fri
Sep 25
Sat
Sep 26

Why should you book Portland, OR to St. Louis, MO flights with Omio?

American Airlines operates all flights services from Portland, OR to St. Louis, MO.
Omio is an official ticket reseller for all your travel options from Portland, OR to St. Louis, MO.

Why book with Omio vs American Airlines?

  • 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.
  • Compare all your options: Omio allows you to compare American Airlines with all available travel options, which are train, bus and flight to ensure you get the best deal for traveling from Portland, OR to St. Louis, MO.

Why book with Omio over Trip, Edreams or Skyscanner?

  • Multiple modes of transport: Omio allows you to compare travel options including train, bus and flight to find the ideal travel option from Portland, OR to St. Louis, MO.

Airlines: United, American Airlines, Alaska Airlines, skywest airlines from Portland, OR to St. Louis, MOFind the best flights between Portland, OR to St. Louis, MO with Omio's travel partners United, American Airlines, Alaska Airlines, skywest airlines from $238 (€195). We can find you the best deals, schedules and tickets when comparing and booking the best trip.

United

About
United Airlines, established in 1926, is a major U.S. airline headquartered in Chicago, Illinois. Operating an extensive domestic and international network, United serves more destinations than any other airline, connecting travelers across six continents. The airline's eight hubs include Chicago–O'Hare, Denver, Houston–Intercontinental, Los Angeles, Newark, San Francisco, Washington–Dulles, and Guam. As a founding member of the Star Alliance, United offers a comprehensive range of services, including regional flights through United Express, catering to both leisure and business travelers. The airline is committed to sustainability, investing in sustainable aviation fuel and innovative technologies to reduce its environmental impact.
Luggage & cancellation policy
Average United Duration
4h 33m
Cheapest United Price
$270 (€221)
United frequency
27 a day
Luggage included
Carry-on baggage allowance is 7kg total (2 pieces max. ) for both Choice and Flex fares on United Airlines and Virgin Australia flights.
Additional luggage
Excess baggage fees apply for additional checked luggage beyond the standard allowance.
Luggage storage
Both airlines provide checked baggage services for storing luggage during flights.
Cancellation Policy
Cancellation fees apply per person, per booking, with specific fees for different fare types.
Refund
Not applicable to flights; however, full refunds are available if flights are canceled by the airline.
Pregnant on board
Pregnant passengers are permitted to travel, with specific guidelines and medical certificates required after a certain gestational period.
Unaccompagned minor
Unaccompanied minors are permitted to travel, with specific age restrictions and services provided.
Amenities on board the airplane
Wifi
Food sold onboard
Meals and snacks are included on international flights operated by United Airlines and Virgin Australia.
Seat reservation
Seat selection may incur additional fees, depending on the fare type and airline.
Toilets
USB plugs
Accessibility
United Airlines and Virgin Australia offer services to and within Australia, providing accessible travel options for passengers with mobility needs.
Bikes
Both airlines permit bicycles onboard, with specific guidelines and fees.
Pets
United Airlines and Virgin Australia allow pets onboard, subject to specific policies and fees.

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
Average American Airlines Duration
5h 16m
Cheapest American Airlines Price
$221 (€181)
American Airlines frequency
22 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.

skywest airlines

About
SkyWest Airlines is a major North American regional airline headquartered in St. George, Utah. It operates flights for larger carriers such as Alaska Airlines (as Alaska SkyWest), American Airlines (as American Eagle), Delta Air Lines (as Delta Connection), and United Airlines (as United Express). SkyWest is the largest regional airline in North America by fleet size, passengers carried, and destinations served. The airline connects passengers to over 250 destinations across the United States, Canada, and Mexico, primarily linking smaller airports to major airline hubs. SkyWest's fleet consists of regional jets, including the Bombardier CRJ series and Embraer 175 aircraft.
Luggage & cancellation policy
Average skywest airlines Duration
6h 3m
Cheapest skywest airlines Price
$828 (€677)
skywest airlines frequency
1 a day
Luggage included
One carry-on bag and one personal item are allowed for free.
Additional luggage
Additional luggage can be purchased, and fees apply for excess, oversized, or overweight baggage.
Cancellation Policy
If canceled within 24 hours of purchase, a full refund is possible, provided the departure is at least 7 days away; after 24 hours, fees range from $100 to $500.
Refund
If SkyWest Airlines cancels a flight, passengers are eligible for a full refund.
Pregnant on board
Being pregnant on board is allowed, but specific policies may depend on the partner airline.
Unaccompagned minor
Children aged 5-14 can travel alone using the unaccompanied minor service, which includes airport escort and supervision.
Amenities on board the airplane
Seat reservation
Toilets
Accessibility
SkyWest Airlines complies with all provisions of the Air Carrier Access Act and accommodates customers with special needs.
Bikes
Bicycles can be checked in but may incur additional fees and must be properly packed.
Pets
Small pets like cats and dogs are allowed in the cabin for a fee, with restrictions on pet and carrier size.

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 Alaska Airlines Duration
3h 48m
Cheapest Alaska Airlines Price
$422 (€345)
Alaska Airlines frequency
20 a day
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)

Complete guide to St. Louis, MO

Things to do in St. Louis, MO

Discover the best of St. Louis, MO — top attractions, local food, transport tips, budget advice, and currency essentials. Plan your perfect St. Louis, MO trip today.

  • Must visit

Saint Louis Art Museum

Vast art museum in Forest Park with global collections from antiquity to modern works and strong free general admission.

  • Recommended

Missouri History Museum

Leading history museum covering St. Louis, Missouri, and national stories through rotating exhibitions in Forest Park.

  • Recommended

Saint Louis Science Center

Interactive science museum with hands-on exhibits, planetarium, and family-friendly displays near Forest Park.

United States dollar ($)

Moderate for U.S. city breaks: hotels and dining are reasonable, transit is limited, and attractions often cost less than in larger U.S. tourist cities.

Average meal costs

Budget
$10-15 for fast food or casual lunch.
Mid-range
$20-35 per person for a mid-range restaurant meal.
Fine dining
$60+ per person at upscale restaurants.
Coffee
$3-5 for coffee or cappuccino.

Tipping culture

Tip 18-20% at restaurants, $1-2 per drink at bars, and 10-15% for taxis. Cafes often have tip jars or screen prompts.

FAQs: Portland, OR to St. Louis, MO Flight

Find answers to the most common questions about traveling from Portland, OR to St. Louis, MO 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 St. Louis, MO, this guide helps you travel smarter and with confidence.

FAQs
Cheap plane tickets from Portland, OR to St. Louis, MO can start from as little as $221 (€181) when you book in advance. The average flight ticket price for Portland, OR to St. Louis, MO is $632 (€517) ; 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 Portland, OR to St. Louis, MO is 3h 48m to travel the 1719 miles (2767 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 Portland, OR to St. Louis, MO leaves at 12:43 AM. Plan your trip with the Journey Planner from Omio.
The latest flight from Portland, OR to St. Louis, MO leaves at 11:58 PM.
There are 58 flights a day from Portland, OR to St. Louis, MO which require at least one change with American Airlines. Schedules can vary on holidays or weekends with fewer flights.
When taking a flight from Portland, OR to St. Louis, MO, you can count on American Airlines for the best way to get you to St. Louis, MO. You can also check all possible airlines who offer a service between Portland, OR and St. Louis, MO and compare the amenities they offer before buying a plane ticket.
Flights from Portland, OR to St. Louis, MO generally leave from Portland International Airport and arrive in St. Louis Lambert International Airport.Portland International Airport is 4 miles (8 km) away from Portland, OR city centre and St. Louis Lambert International Airport is 1 miles (2 km) from St. Louis, MO city centre.
The cheapest month for a flight from Portland, OR to St. Louis, MO is June.
It's helpful to compare your options as there are 3 ways to travel between Portland, OR and St. Louis, MO including taking a train, bus, and flight.
Since neither Portland, OR nor St. Louis, MO are in the Schengen Area, passport requirements depend on the specific immigration rules of United States 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 2 h between Portland, OR and St. Louis, MO all year round.
The best events to attend in St. Louis, MO include:
  • St. Louis Mardi Gras, a vibrant celebration featuring parades, live music, and festive activities in the Soulard neighborhood
  • St. Louis Art Fair, an annual event showcasing local and national artists with art exhibits, live performances, and culinary delights
  • Fair St. Louis, a multi-day Independence Day festival with fireworks, concerts, and family-friendly activities along the Gateway Arch.
The best holidays to experience in St. Louis, MO include:
  • Independence Day, vibrant fireworks and festive celebrations throughout the city
  • Labor Day, pleasant weather and various outdoor activities
  • Thanksgiving, a time for family gatherings with a charming autumn atmosphere.
The best season to visit St. Louis, MO is Spring or Fall. The best weather to explore St. Louis, MO is during April-May or September-October.
We recommend using the train as it is the most popular way to get from Portland, OR to St. Louis, MO among Omio's users.
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.
The currency used in the United States is the US Dollar (USD). For travelers, using cards is generally more convenient and widely accepted, especially credit and debit cards, while cash is useful for small purchases or places that do not accept cards.
In St. Louis, MO, travelers should be cautious in certain neighborhoods with higher crime rates, especially after dark. Common safety concerns include petty theft, pickpocketing, and occasional scams targeting visitors near popular attractions like the Gateway Arch. It’s advisable to stay in well-populated areas, avoid displaying valuables openly, and use reputable transportation services to minimize risks.
Pack lightweight, versatile clothing suitable for the destination's climate, and use secure, lockable luggage to protect belongings. Keep essential items like travel documents, medication, and valuables in a carry-on bag for easy access. Use packing organizers or cubes to maximize space and maintain order. Lastly, include a small first aid kit and personal hygiene items for added comfort during travel.

popular airports

Popular airports from Portland, OR to St. Louis, MO

Most Portland, OR to St. Louis, MO flights use the Portland International Airport to St. Louis Lambert International Airport airport pair. Use this guide to compare Portland, OR and St. Louis, MO airports on this route, check city-centre transport, alongside checking practicalities like airport facilities and services.

Departure airports in Portland
Arrival airports in St. Louis

Which Portland, OR airport do flights to St. Louis, MO leave from?

Flights from Portland, OR to St. Louis, MO depart from Portland International Airport. The airport is 4 miles (8 km) from Portland, OR city centre at 7000 NE Airport Way, Portland, OR 97218, USA.
Portland International Airport (PDX)7000 NE Airport Way, Portland, OR 97218, USAWifiShoppingParkingDiningATMTaxisAccessibilityWCHotelShowerLoungeLost and Found OfficeCar Rental
City-centre transport

Getting to Portland International Airport from Portland city centre

Portland International Airport is 8 km from Portland city centre. Public transport options include:

BusCentral Oregon Breeze · 30m · $55
12, 292 · 53m · $7 · every ~8 min
292 · 53m · $4
TramMAX Red Line · 30m · $4 · every ~8 min
MAX Red Line · 34m · $4 · every ~8 min
MAX Red Line · 36m · $4 · every ~8 min

Portland International Airport airport facilities and services

Portland International Airport has practical services for this route, including Wifi, Shopping, Parking, Dining, ATM, Taxis, Accessibility, WC, Hotel, Shower, Lounge, Lost and Found Office, and Car Rental.

Food and drink

Food options include: Restaurants in concourses, including Burgerville and Mo's Seafood

Wi-Fi and ATMs

Free Wi-Fi available throughout the airport. ATMs are located throughout the airport.

Luggage and lost property

Lost and found is available at the station.

Parking, taxis and toilets

Available at Portland International Airport: Parking, Taxis, WC.

Bike and car services

Available at Portland International Airport: Car Rental.

Accessibility

Accessibility facilities are available at Portland International Airport: Ramps, assistance.

Shops, hotels and contact

Nearby hotels include Hotels nearby, including Sheraton Portland Airport Hotel..

Most popular flights to and from St. Louis, MO and Portland, OR

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