Cheap Flights from Portland to St. Louis from CAD 80️ 2024

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Flights from Portland to St. Louis

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Find Portland to St. Louis flights starting at CAD 80.

Book one-way or return flights from Portland to St. Louis from as little as CAD 80. Choose from the popular airlines below and book your flight today!

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Searching for the best last minute flight from Portland to St. Louis? Find one-way or return flights that are affordable and fit your itinerary.

Trip.com monitors the ticket fares of flights from Portland to St. Louis. Stay updated on price trends and snag the best deals for your upcoming trip.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Find Cheapest Airlines Flying from Portland to St. Louis

View airlines operating flights from Portland to St. Louis. Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines

From CAD 80

Spirit Airlines

From CAD 94

Alaska Airlines

From CAD 178

American Airlines

From CAD 184

Sun Country Airlines

From CAD 190

Delta Air Lines

From CAD 197

United Airlines

From CAD 224

ANA airlines

Find more flights and airlines

Alternative Routes for Portland to St. Louis Flights

Discover different routes, airlines, and transfers and find the best alternative flights for your journey from Portland to St. Louis.

Cheapest
PDX
00:59
12h 51m
1 transfer
STL
15:50
Portland International Airport - St. Louis Lambert International Airport
Tue, Apr 30Frontier Airlines
CAD 80
PDX
00:59
12h 51m
1 transfer
STL
15:50
Portland International Airport - St. Louis Lambert International Airport
Tue, Apr 30Frontier Airlines
CAD 80
Find More Flights

How do I find the cheapest flights?

When are flight tickets from Portland (PDX) to St. Louis (STL) the cheapest?
Airlines adjust prices for flights from Portland to St. Louis based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much are flights from Portland (PDX) to St. Louis (STL) cost?
According to Trip.com's data, the lowest price is around CAD 539.
What is the transportation method from the main airport to downtown in St. Louis?
- The distance from St. Louis Lambert International Airport to downtown is about 20km, by taxi about 40 minutes.
What's the most popular airline for direct flights from Portland (PDX) to St. Louis (STL)?
Southwest Airlines operates 1 direct flights from Portland (PDX) to St. Louis (STL).
How many airports in St. Louis (STL)?
There are 3 airport(s) in St. Louis (STL): St. Louis Downtown Airport, St. Louis Lambert International Airport and St Louis Spirit Of St Louis Airport.

How to find a cheap flight from Portland to St. Louis

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Portland to St. Louis. Book your flights at the right time and save more.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

Compare prices on travel agency and airline websites.

Look Out for Deals

Check airline and travel agency websites for latest flight deals

Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

Use the Trip.com App

Save up to £10 per person when booking your flights on Trip.com