￥19,400 Cheap Flights from Portland (PDX) to St. Louis (STL)

View ￥19,400 flight on Mon, Jan 5, 2026Opens in a new window

Popular airlines from Portland International Airport (PDX) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Portland to St. Louis (PDX-STL)

Prices were available within the past 7 days and start at ￥19,400 for one-way flights and ￥38,800 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Jan 12 - Sat, Jan 17
PDX
Portland
STL
St. Louis
￥38,800 Roundtrip, found 6 days ago
￥38,800
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Jan 12 from Portland to St. Louis, returning Sat, Jan 17, priced at ￥38,800 found 6 days ago
American Airlines
Mon, Jan 12 - Sat, Jan 17
PDX
Portland
STL
St. Louis
￥42,350 Roundtrip, found 6 days ago
￥42,350
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Jan 12 from Portland to St. Louis, returning Sat, Jan 17, priced at ￥42,350 found 6 days ago
Delta
Mon, Jan 12 - Sat, Jan 17
PDX
Portland
STL
St. Louis
￥44,180 Roundtrip, found 6 days ago
￥44,180
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Jan 12 from Portland to St. Louis, returning Sat, Jan 17, priced at ￥44,180 found 6 days ago
American Airlines
Mon, Jan 12 - Sat, Jan 17
PDX
Portland
STL
St. Louis
￥45,580 Roundtrip, found 6 days ago
￥45,580
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Jan 12 from Portland to St. Louis, returning Sat, Jan 17, priced at ￥45,580 found 6 days ago
American Airlines
Mon, Jan 12 - Sat, Jan 17
PDX
Portland
STL
St. Louis
￥49,230 Roundtrip, found 6 days ago
￥49,230
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Jan 12 from Portland to St. Louis, returning Sat, Jan 17, priced at ￥49,230 found 6 days ago
Delta
Mon, Jan 12 - Sat, Jan 17
PDX
Portland
STL
St. Louis
￥50,410 Roundtrip, found 6 days ago
￥50,410
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Jan 12 from Portland to St. Louis, returning Sat, Jan 17, priced at ￥50,410 found 6 days ago
American Airlines
Mon, Jan 12 - Sat, Jan 17
PDX
Portland
STL
St. Louis
￥52,350 Roundtrip, found 6 days ago
￥52,350
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Jan 12 from Portland to St. Louis, returning Sat, Jan 17, priced at ￥52,350 found 6 days ago
United
Mon, Jan 12 - Sat, Jan 17
PDX
Portland
STL
St. Louis
￥52,780 Roundtrip, found 6 days ago
￥52,780
Roundtrip
found 6 days ago
Select United flight, departing Mon, Jan 12 from Portland to St. Louis, returning Sat, Jan 17, priced at ￥52,780 found 6 days ago
American Airlines
Mon, Jan 12 - Sat, Jan 17
PDX
Portland
STL
St. Louis
￥54,070 Roundtrip, found 6 days ago
￥54,070
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Jan 12 from Portland to St. Louis, returning Sat, Jan 17, priced at ￥54,070 found 6 days ago
Alaska Airlines
Mon, Jan 12 - Sat, Jan 17
PDX
Portland
STL
St. Louis
￥58,860 Roundtrip, found 6 days ago
￥58,860
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Mon, Jan 12 from Portland to St. Louis, returning Sat, Jan 17, priced at ￥58,860 found 6 days ago

Find the cheapest month to fly from Portland (PDX) to St. Louis (STL)

January is typically the cheapest month to fly

From ￥24,574 - ￥67,409 per traveler.
Flights from Portland (PDX) to St. Louis (STL)
Origin airport
Portland Intl.
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
￥38,800
Distance
2725 km

Portland to St. Louis Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Portland to will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring St. Louis.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with PDX to STL flights that won’t make your bank account wince. Ready to temporarily leave behind Portland for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to STL with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from PDX Airport to Lambert-St. Louis Intl. Airport (STL)?
Round-trip journeys from Portland Airport to Lambert Field start from ￥38,800. This is based on fares available within the last 7 days on Expedia for flights departing within the next year — make your booking ASAP so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from PDX Airport to St. Louis Lambert International Airport?
Most flights can be canceled online, but every airline has its own terms and conditions. If you do decide to cancel your flight, check out our Customer Service Portal and follow the instructions.
How do I find cheap flights from Portland Airport to Lambert-St. Louis Intl. Airport (STL) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Portland Intl. Airport (PDX) to Lambert-St. Louis Intl. Airport (STL) flights, you'll see a "no change fees" filter for you to select.
How many hours is the flight from PDX Airport to Lambert Field?
You may like to bring your own entertainment (like some downloaded TV shows), as it takes approximately 5 hours and 54 minutes to touch down in Lambert-St. Louis Intl. Airport (STL) from PDX Airport. A good set of noise-canceling headphones will also be useful.
How far is the flight from Portland Intl. Airport (PDX) to Lambert Field?
It's around 2,700 kilometers between Portland Intl. Airport (PDX) and Lambert-St. Louis Intl. Airport (STL), so expect to be up in the air for a while. Keep yourself entertained with things like playing cards (if you're traveling with friends) or a good old-fashioned book.
Which airlines fly direct from Portland Intl. Airport (PDX) to STL?
Unfortunately, there are no airlines that fly direct between Portland Intl. Airport (PDX) and Lambert-St. Louis Intl. Airport (STL). You'll need to book a flight with one or more stops.
Are PDX Airport to Lambert-St. Louis Intl. Airport (STL) flight tickets cheaper when they're purchased at the last minute?
It is possible to score an amazing last-minute deal from Portland Intl. Airport (PDX) to Lambert-St. Louis Intl. Airport (STL), but it can also be hit-or-miss. As many airlines release seats up to a year in advance, it's worth keeping an eye on fares early and being ready to book when you spot a good bargain. Expedia compares air carrier prices and updates flight deals often, so you can be certain you're always seeing the latest offers.
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