Which layover airport has the shortest connection time from St. Louis to Portland?

Minneapolis (MSP) has the shortest average layover time for this route: 1h 00m.

What is the cheapest airline that flies from Lambert-St Louis to Portland?

Delta and American Airlines are the most popular carriers operating from Lambert-St Louis to Portland

Which airport is the most popular layover for flights between St. Louis and Portland?

Seattle (SEA) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from St. Louis to Portland?

Flights connecting via Salt Lake City (SLC) have the shortest average one-way travel time: 5h 50m.

What airlines fly to Portland?

Delta, Southwest and United Airlines are the top three most popular airlines that fly to Portland from St. Louis according to our data. Delta is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Portland. Keep in mind that there are 7 different airlines that fly to Portland on a routine basis, so you have a few additional options to choose from.

Which layover airport offers the lowest fares from St. Louis to Portland?

Flights via Minneapolis (MSP) offer the lowest average round-trip price of $217.

When did momondo last update prices for flights from Lambert-St Louis Airport to Portland Airport?

Prices for flights from Lambert-St Louis Airport to Portland Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to Portland Airport?

The number of operators available for flights from Lambert-St Louis Airport to Portland Airport is 7 as of January 2026.

How old do you have to be to fly from Lambert-St Louis Airport to Portland Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Portland Airport.

What documentation or ID do you need to fly to Portland Airport?

The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$66 Cheap Flights from St. Louis to Portland in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from St. Louis to Portland

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:32 pm - 11:18 am

STL

PDX

15h 46m1 stop

10:44 am - 2:46 pm

PDX

STL

26h 02m2 stops

$165Frontier

Sun, Feb 1 - Fri, Feb 6

3:31 pm - 8:32 pm

STL

PDX

7h 01m1 stop

6:15 am - 4:45 pm

PDX

STL

8h 30m1 stop

$177Delta

Mon, Jan 26 - Tue, Feb 3

1:45 pm - 8:45 pm

STL

PDX

9h 00m2 stops

11:55 pm - 9:30 am

PDX

STL

7h 35m1 stop

$178Southwest

Tue, Apr 14 - Tue, Apr 21

6:20 am - 10:35 am

STL

PDX

6h 15m1 stop

6:45 am - 5:30 pm

PDX

STL

8h 45m2 stops

$182Southwest

Wed, Jan 28 - Wed, Feb 4

1:45 pm - 8:45 pm

STL

PDX

9h 00m2 stops

12:45 pm - 11:10 pm

PDX

STL

8h 25m2 stops

$183Southwest

Tue, Apr 14 - Tue, Apr 21

9:00 am - 3:40 pm

STL

PDX

8h 40m2 stops

5:05 am - 4:35 pm

PDX

STL

9h 30m2 stops

$188Southwest

Wed, Jan 28 - Wed, Feb 4

6:00 am - 10:58 am

STL

PDX

6h 58m1 stop

11:40 pm - 11:01 am

PDX

STL

9h 21m1 stop

$189American Airlines

Wed, Feb 25 - Tue, Mar 3

10:01 pm - 9:49 am

STL

PDX

13h 48m1 stop

11:28 am - 9:06 pm

PDX

STL

7h 38m1 stop

$201Frontier

Thu, Jan 29 - Thu, Feb 5

2:50 pm - 8:47 pm

STL

PDX

7h 57m1 stop

1:38 pm - 10:46 pm

PDX

STL

7h 08m1 stop

$209Alaska Airlines

Mon, Jan 26 - Fri, Feb 6

6:40 am - 8:59 pm

STL

PDX

16h 19m2 stops

6:15 am - 4:45 pm

PDX

STL

8h 30m1 stop

$215Delta

Sat, Jan 31 - Thu, Feb 5

American Airlines flights from St. Louis to Portland

Our best American Airlines deals on St. Louis to Portland flight tickets

American Airlines

Feb 25

STL6:00 amLambert-St Louis

6h 58m

1 stop

PDX10:58 amPortland

Mar 3

PDX11:40 pmPortland

9h 21m

1 stop

STL11:01 amLambert-St Louis

$189

American Airlines

Feb 24

STL2:31 pmLambert-St Louis

8h 13m

1 stop

PDX8:44 pmPortland

Mar 1

PDX11:48 amPortland

7h 24m

1 stop

STL9:12 pmLambert-St Louis

$219

American Airlines

Feb 6

STL3:37 pmLambert-St Louis

8h 34m

1 stop

PDX10:11 pmPortland

Feb 9

PDX10:15 pmPortland

9h 25m

1 stop

STL9:40 amLambert-St Louis

$239

United Airlines flights from St. Louis to Portland

Our best United Airlines deals on St. Louis to Portland flight tickets

United Airlines

Jan 26

STL6:00 amLambert-St Louis

8h 18m

1 stop

PDX12:18 pmPortland

Feb 2

PDX12:59 pmPortland

7h 01m

1 stop

STL10:00 pmLambert-St Louis

$229

United Airlines

Feb 16

STL6:00 pmLambert-St Louis

7h 14m

1 stop

PDX11:14 pmPortland

Feb 20

PDX12:57 pmPortland

7h 17m

1 stop

STL10:14 pmLambert-St Louis

$240

United Airlines

Apr 27

STL2:40 pmLambert-St Louis

8h 34m

1 stop

PDX9:14 pmPortland

May 2

PDX8:45 amPortland

10h 19m

2 stops

STL9:04 pmLambert-St Louis

$244

Fly from

Fly to

Route

Depart

Return

Price

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Sun 2/1

9:32 pm-11:18 am

1 stop15h 46m

Portland

Fri 2/6

10:44 am-2:46 pm

2 stops26h 02m

$165

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Mon 1/26

3:31 pm-8:32 pm

1 stop7h 01m

Portland

Tue 2/3

6:15 am-4:45 pm

1 stop8h 30m

$177

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 4/14

1:45 pm-8:45 pm

2 stops9h 00m

Portland

Tue 4/21

11:55 pm-9:30 am

1 stop7h 35m

$178

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 1/28

6:20 am-10:35 am

1 stop6h 15m

Portland

Wed 2/4

6:45 am-5:30 pm

2 stops8h 45m

$182

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 4/14

1:45 pm-8:45 pm

2 stops9h 00m

Portland

Tue 4/21

12:45 pm-11:10 pm

2 stops8h 25m

$183

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 1/28

9:00 am-3:40 pm

2 stops8h 40m

Portland

Wed 2/4

5:05 am-4:35 pm

2 stops9h 30m

$188

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 2/25

6:00 am-10:58 am

1 stop6h 58m

Portland

Tue 3/3

11:40 pm-11:01 am

1 stop9h 21m

$189

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Thu 1/29

10:01 pm-9:49 am

1 stop13h 48m

Portland

Thu 2/5

11:28 am-9:06 pm

1 stop7h 38m

$201

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Mon 1/26

2:50 pm-8:47 pm

1 stop7h 57m

Portland

Fri 2/6

1:38 pm-10:46 pm

1 stop7h 08m

$209

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Sat 1/31

6:40 am-8:59 pm

2 stops16h 19m

Portland

Thu 2/5

6:15 am-4:45 pm

1 stop8h 30m

$215

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Portland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between St. Louis and Portland?

What is the cheapest month to fly to Portland?

The cheapest month to fly to Portland from St. Louis is in January. Flight prices, which tend to average around $289, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in January, then you should wait until September to fly from St. Louis, when ticket prices are also cheap, with an average price of $303.

What is the cheapest day to depart on your flight to Portland?

The cheapest day to depart on your flight to Portland is on a Friday when prices can be found for as low as $382. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Sunday, with ticket prices averaging around $585.

What is the cheapest time of day to depart on your flight to Portland?

The cheapest time of day to fly to Portland is in the afternoon when flights can be purchased for as low as $449. At noon is when there is more demand to fly to Portland, so prices are often more expensive at around $562 per ticket.

What is the cheapest Lambert-St Louis to Portland flight route?

Fly from Lambert-St Louis to Portland for the best Lambert-St Louis - Portland flight prices

How far in advance should I book a flight to Portland?

You are more likely to see cheaper flights to Portland from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around $357 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from St. Louis for as low as $291 on momondo.

What cabin class options are available on Lambert-St Louis to Portland flights?

There is only 1 cabin class available to choose from on Lambert-St Louis to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have St. Louis to Portland flight prices changed over time?

As of January 2026, prices for St. Louis to Portland flights are approximately 30% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Portland

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Portland according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Portland (STL to PDX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Portland

Best Price Found	$134
Fastest flight time	4h 10m
Direct flights	Mon, Tue, Thu, Fri, Sat and Sun
Airports in Portland	1 airport

The best one-way flight to Portland from St. Louis in the past 72 hours is $134. The best round-trip flight deal from St. Louis to Portland found on momondo in the last 72 hours is $299.

The fastest flight from St. Louis to Portland takes 4h 10m

Direct flights go from St. Louis to Portland on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. The only airline offering direct flights is Alaska Airlines.

There is 1 airport in Portland. From St. Louis there are direct flights to Portland (PDX).

Search flight deals

How far is Lambert-St Louis to Portland by plane?
Portland is 1718.1 mi away from Lambert-St Louis. Typically, this will take 4h 10m by plane in normal conditions.
When did momondo last update prices for flights from Lambert-St Louis Airport to Portland Airport?
Prices for flights from Lambert-St Louis Airport to Portland Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Portland Airport?
The number of operators available for flights from Lambert-St Louis Airport to Portland Airport is 7 as of January 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Portland Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Portland Airport.
What documentation or ID do you need to fly to Portland Airport?
The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from St. Louis to Portland?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from St. Louis to Portland is Boeing 737 MAX 8 (28.57% of total bookings). The next most popular plane models are Boeing 737-900 Passenger/BBJ3 (winglets) (28.57%), Boeing 737 MAX 9 (14.29%), and Boeing 737-700 Passenger/BBJ1 (winglets) (14.29%).
What is the most popular airline from St. Louis to Portland?
Based on momondo bookings for this flight route, the most popular airline on flight routes from St. Louis to Portland is Delta (27% of total bookings). The next most popular airlines are Southwest (24%), United Airlines (19%), and American Airlines (14%).

Best airlines flying from St. Louis to Portland

Compare and see reviews for airlines that fly from St. Louis to Portland with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $139	Free Cancellation	Rating 5.7 3,061 reviews	Search Frontier flights
American Airlines	PriceFrom $188	Free Cancellation	Rating 7.2 11,095 reviews	Search American Airlines flights
Southwest	PriceFrom $220	Free Cancellation	Rating 8.0 4,250 reviews	Search Southwest flights
Delta	PriceFrom $223	Free Cancellation	Rating 7.9 8,029 reviews	Search Delta flights
United Airlines	PriceFrom $244	Free Cancellation	Rating 7.4 9,141 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $248	Free Cancellation	Rating 8.0 11,666 reviews	Search Alaska Airlines flights
Hawaiian Airlines	PriceFrom $338	Free Cancellation	Rating 7.8 2,824 reviews	Search Hawaiian Airlines flights

Lincoln City

Seaside

Cannon Beach

Vancouver

Salem

Astoria

Long Beach

Depoe Bay

Rockaway Beach

Beaverton

Hillsboro

Hood River

McMinnville

Gresham

Longview

Tigard

Pacific City

The Dalles

Manzanita

Newberg

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Portland?

Finding the right flight to Portland from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portland quick and easy, saving you time and money.

Can I find flights from St. Louis to Portland with flexible booking policies on momondo?

Flights from St. Louis to Portland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Portland?

Once all potential St. Louis to Portland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Portland right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Portland, momondo offers a useful price alert feature which will track prices for flights to Portland from St. Louis and alert you when they change.

An easier way to manage your Portland trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 2/7

Sat 2/14

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Airports servicing Oregon

Eugene Airport

Klamath Falls Kingsley Field Airport

Popular cities in the United States

Flights to New Yorkfrom $49

Flights to Los Angelesfrom $38

Flights to Miamifrom $32

Flights to Chicagofrom $58

Flights to Orlandofrom $55

Flights to San Franciscofrom $49

Flights to Las Vegasfrom $55

Flights to Washington, D.C.from $58

Flights to Bostonfrom $58

Flights to Atlantafrom $48

Flights to Dallasfrom $57

Flights to Seattlefrom $57

Cheap flights from St. Louis to Portland from $66

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Portland departing on 3/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from St. Louis to Portland

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

American Airlines flights from St. Louis to Portland

Our best American Airlines deals on St. Louis to Portland flight tickets

United Airlines flights from St. Louis to Portland

Our best United Airlines deals on St. Louis to Portland flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to Portland that are best for you.

See travel insights to Portland from

How to get the cheapest flight ticket from St. Louis to Portland

What is the typical price of a round-trip flight between St. Louis and Portland?

What is the cheapest month to fly to Portland?

What is the cheapest day to depart on your flight to Portland?

The cheapest day to depart on your flight to Portland is on a Friday when prices can be found for as low as $382. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Sunday, with ticket prices averaging around $585.

What is the cheapest time of day to depart on your flight to Portland?

The cheapest time of day to fly to Portland is in the afternoon when flights can be purchased for as low as $449. At noon is when there is more demand to fly to Portland, so prices are often more expensive at around $562 per ticket.

What is the cheapest Lambert-St Louis to Portland flight route?

Fly from Lambert-St Louis to Portland for the best Lambert-St Louis - Portland flight prices

How far in advance should I book a flight to Portland?

What cabin class options are available on Lambert-St Louis to Portland flights?

There is only 1 cabin class available to choose from on Lambert-St Louis to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have St. Louis to Portland flight prices changed over time?

As of January 2026, prices for St. Louis to Portland flights are approximately 30% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Lambert-St Louis to Portland?

Delta and American Airlines are the most popular carriers operating from Lambert-St Louis to Portland

What airlines fly to Portland?

Which airport is the most popular layover for flights between St. Louis and Portland?

Seattle (SEA) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from St. Louis to Portland?

Flights via Minneapolis (MSP) offer the lowest average round-trip price of $217.

Which layover airport has the shortest travel time from St. Louis to Portland?

Flights connecting via Salt Lake City (SLC) have the shortest average one-way travel time: 5h 50m.

Which layover airport has the shortest connection time from St. Louis to Portland?

Minneapolis (MSP) has the shortest average layover time for this route: 1h 00m.

When to book flights from St. Louis to Portland

Cheap St. Louis to Portland (STL to PDX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Portland

Best Price Found

Fastest flight time

Direct flights

Airports in Portland

How far is Lambert-St Louis to Portland by plane?

When did momondo last update prices for flights from Lambert-St Louis Airport to Portland Airport?

How many operators does momondo search for flights from Lambert-St Louis Airport to Portland Airport?

How old do you have to be to fly from Lambert-St Louis Airport to Portland Airport?

What documentation or ID do you need to fly to Portland Airport?

What is the most popular plane model from St. Louis to Portland?

What is the most popular airline from St. Louis to Portland?

Best airlines flying from St. Louis to Portland

Compare and see reviews for airlines that fly from St. Louis to Portland with momondo

Traveling to a place near Portland?

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Portland?

Can I find flights from St. Louis to Portland with flexible booking policies on momondo?

How can momondo help me find flights from St. Louis to Portland?

I’m not ready to book a flight from St. Louis to Portland right now. Can momondo alert me if prices change?

An easier way to manage your Portland trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Oregon