Cheap flights from Portland, OR to St. Louis, MO

Flights starting at £117. Choose between United Airlines, American Airlines, or Delta Air Lines to find the best price.

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Tips to know when travelling to St. Louis

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Travelers usually depart from Portland International, Portland, OR - Union Station, or Portland, OR - Greyhound Station when they travel from Portland to St. Louis. Book your trip to arrive at St. Louis Lambert International, or St. Louis Union Station. The most popular airlines for this route are United Airlines, American Airlines, Delta Air Lines, Alaska Airlines, and Frontier Airlines. Portland and St. Louis have 388 direct flights per week.

Check-in for a flight from Portland to St. Louis

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
United AirlinesUALUAYesNo
American AirlinesAALAAYesNo
Delta Air LinesDALDLYesOpens 24 days before flight
Closes 1 hours before flight
Alaska AirlinesASAASYesOpens 24 days before flight
Closes 1 hours before flight
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight

St. Louis travel tips

1) Spend time at Grant’s Farm, a longtime landmark in Grantwood Village in St. Louis

Grant's Farm has been an animal reservation for a long time and is open to the public. Visiting the farm is free, but parking costs $15 per car. These funds go to the maintenance of the farm. Buffaloes, elephants, camels, donkeys, kangaroos, goats, and peacocks live here. You will see most of the animals on the tram tour around the farm area.

2) Do you like motorcycles and speed? Visit the St. Louis Moto Museum

The St. Louis Moto Museum is a private collection of motorcycles. Its exhibits came from more than 20 countries around the world, and the period spans over 100 years. The entrance to the museum is free, visitors are accepted from Monday to Friday.

3) Want to have some fun in the evening? Head to the partying areas of St. Louis

In St. Louis, they know how to have a great evening. Head to areas such as The Loop in the West End for great atmospheric bars, dance clubs, and traditional city music.

Learn more about COVID-19 restrictions in United States in our dedicated Stories article.

Frequently asked questions

What are the most popular routes to and from Portland?
Travelers frequently search for route combinations, such as Portland and London, San Francisco, Dublin, Phoenix, Washington, D.C., Atlanta, Denver, Las Vegas, Los Angeles, Barcelona, New York, Chicago, Austin, San Diego, Bangkok, Tallinn, Minneapolis, Santa Ana, Philadelphia, Kahului.
What are the most popular routes to and from St. Louis?
Travelers frequently search for route combinations, such as St. Louis and London, Manchester, New York, Cebu, San Jose, Atlanta, Los Angeles, Orlando, Edinburgh, Houston, San Francisco, Phoenix, Seattle, Denver, Dallas, Glasgow, Washington, D.C., Paris, Charlotte, Reykjavik.
What airports are near Portland?
The main airport in Portland is Portland International. It is also served by Seattle–Tacoma International, Portland International, Eugene, Roberts Field, Kenmore Air Harbor Seaplane Base.
What airports are near St. Louis?
The main airport in St. Louis is St. Louis Lambert International. It is also served by St. Louis Lambert International, General Wayne A. Downing Peoria International, Central Illinois Regional, MidAmerica St. Louis, Abraham Lincoln Capital, Williamson County Regional, Evansville Regional, Quincy Regional, Decatur, University of Illinois Willard.
What buses and trains depart from Portland?
A number of bus and train companies depart from Portland, including Amtrak train.
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Portland and St. Louis?
Yes, it's possible to combine different modes of transport between Portland and St. Louis thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between Portland and St. Louis can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.
What is Virtual Interlining and how do I use it?
Virtual Interlining provides a revolutionary way of traveling. You can combine different modes of transport like flights, trains, and buses into one itinerary. And this often saves money. Thanks to the world's largest carrier database, the Kiwi.com search function enables anyone to mix and match different modes of transport easily.
Which airlines fly between Portland and St. Louis?
Currently, you can fly between Portland and St. Louis with United Airlines, American Airlines, Delta Air Lines, Alaska Airlines, Frontier Airlines.
When's the best time to travel between Portland and St. Louis?
If you don’t have specific dates for your trip between Portland and St. Louis, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.
What flights operate between Portland and St. Louis?
How many airports are there near Portland?
How many airports are there near St. Louis?
Is it possible to reach Portland by bus or train?
What time do nonstop (direct) flights between Portland and St. Louis depart?
What time do nonstop (direct) flights between Portland and St. Louis arrive?
What time do flights between Portland and St. Louis depart?
What time do flights between Portland and St. Louis arrive?

Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.

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