What airlines fly to Oregon?

Alaska Airlines, United Airlines and Delta are the top three most popular airlines that fly to Oregon from St. Louis according to our data. Alaska Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Oregon. Keep in mind that there are 6 different airlines that fly to Oregon on a routine basis, so you have a few additional options to choose from.

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

Frontier, United Airlines, and Delta are the most popular carriers operating from Lambert-St Louis to Oregon

How many flights depart from St. Louis to Oregon on average per week?

As of November 2026, 4 flights take off from St. Louis and land in Oregon each week. The most common flight departure day for this route is Thu, with 25% of weekly flights taking off on this day.

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

Prices for flights from Lambert-St Louis Airport to Oregon refresh daily.

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

There are 6 operators available for flights from Lambert-St Louis Airport to Oregon as of November 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Oregon.

What documentation or ID do you need to fly to Oregon?

The travel and health documents you'll need for your trip to Oregon 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 Oregon. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$138 Cheap Flights from St. Louis to Oregon in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Oregon

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:54 pm - 4:10 pmSTL Lambert-St Louis-PDX Portland

22h 16m1 stop Denver Intl

5:10 pm - 11:04 amPDX Portland-STL Lambert-St Louis

15h 54m1 stop Denver Intl

$258Frontier

Mon, Dec 7 - Tue, Dec 15

7:54 pm - 1:03 pmSTL Lambert-St Louis-PDX Portland

19h 09m1 stop Denver Intl

1:29 pm - 9:44 amPDX Portland-STL Lambert-St Louis

18h 15m1 stop Denver Intl

$258Frontier

Sat, Dec 12 - Tue, Jan 12

6:20 pm - 9:32 amSTL Lambert-St Louis-PDX Portland

17h 12m2 stops Denver Intl Phoenix Sky Harbor Intl

1:29 pm - 9:44 amPDX Portland-STL Lambert-St Louis

18h 15m1 stop Denver Intl

$298Multiple Airlines

Sat, Jan 9 - Tue, Jan 12

6:30 am - 11:41 amSTL Lambert-St Louis-PDX Portland

7h 11m1 stop Chicago O'Hare Intl

7:00 am - 6:11 pmPDX Portland-STL Lambert-St Louis

9h 11m1 stop San Francisco

$359United Airlines

Wed, Dec 2 - Wed, Dec 9

3:32 pm - 8:24 pmSTL Lambert-St Louis-PDX Portland

6h 52m1 stop Minneapolis St Paul

1:55 pm - 11:26 pmPDX Portland-STL Lambert-St Louis

7h 31m1 stop Minneapolis St Paul

$359Delta

Tue, Dec 8 - Tue, Dec 15

2:17 pm - 10:07 pmSTL Lambert-St Louis-PDX Portland

9h 50m1 stop Detroit Metropolitan Wayne County

6:00 am - 4:30 pmPDX Portland-STL Lambert-St Louis

8h 30m1 stop Minneapolis St Paul

$359Delta

Mon, Dec 7 - Tue, Dec 15

1:43 pm - 7:55 pmSTL Lambert-St Louis-PDX Portland

8h 12m1 stop Chicago O'Hare Intl

2:32 pm - 11:34 pmPDX Portland-STL Lambert-St Louis

7h 02m1 stop Dallas/Fort Worth

$359American Airlines

Wed, Dec 9 - Wed, Dec 16

6:02 am - 12:37 pmSTL Lambert-St Louis-PDX Portland

8h 35m1 stop Chicago O'Hare Intl

1:30 pm - 10:25 pmPDX Portland-STL Lambert-St Louis

6h 55m1 stop Chicago O'Hare Intl

$359American Airlines

Tue, Dec 8 - Sat, Dec 12

1:08 pm - 8:59 pmSTL Lambert-St Louis-PDX Portland

9h 51m2 stops Chicago O'Hare Intl Denver Intl

12:59 pm - 10:25 pmPDX Portland-STL Lambert-St Louis

7h 26m1 stop Houston George Bush Intcntl

$360United Airlines

Sat, Feb 13 - Tue, Feb 16

7:54 pm - 1:03 pmSTL Lambert-St Louis-PDX Portland

19h 09m1 stop Denver Intl

7:30 am - 4:40 pmPDX Portland-STL Lambert-St Louis

7h 10m1 stop Seattle/Tacoma Intl

$394Multiple Airlines

Sat, Dec 5 - Sat, Dec 12

Cheap last minute flights

Enter your travel dates to find the best prices.

7:59 pm - 11:12 amSTL Lambert-St Louis-PDX Portland

17h 13m1 stop Denver Intl

10:10 pm - 4:20 pmPDX Portland-STL Lambert-St Louis

16h 10m1 stop Las Vegas Harry Reid Intl

$436Frontier

Sat, Nov 14 - Sat, Nov 21

1:28 pm - 11:36 amSTL Lambert-St Louis-PDX Portland

24h 08m1 stop Las Vegas Harry Reid Intl

12:31 pm - 12:33 pmPDX Portland-STL Lambert-St Louis

22h 02m1 stop Las Vegas Harry Reid Intl

$437Frontier

Thu, Nov 12 - Sun, Nov 15

6:13 am - 10:44 amSTL Lambert-St Louis-PDX Portland

6h 31m1 stop Minneapolis St Paul

6:00 am - 4:41 pmPDX Portland-STL Lambert-St Louis

8h 41m1 stop Minneapolis St Paul

$517Delta

Wed, Nov 11 - Sat, Nov 14

8:40 am - 5:50 pmSTL Lambert-St Louis-PDX Portland

11h 10m2 stops Los Angeles Phoenix Sky Harbor Intl

4:55 pm - 12:55 amPDX Portland-STL Lambert-St Louis

6h 00m1 stop Phoenix Sky Harbor Intl

$518Southwest

Sat, Nov 14 - Sat, Nov 21

6:13 am - 10:44 amSTL Lambert-St Louis-PDX Portland

6h 31m1 stop Minneapolis St Paul

6:00 am - 4:41 pmPDX Portland-STL Lambert-St Louis

8h 41m1 stop Minneapolis St Paul

$527Delta

Wed, Nov 11 - Sat, Nov 14

8:40 am - 5:50 pmSTL Lambert-St Louis-PDX Portland

11h 10m2 stops Los Angeles Phoenix Sky Harbor Intl

12:40 pm - 12:55 amPDX Portland-STL Lambert-St Louis

10h 15m2 stops Sacramento Intl Los Angeles

$527Southwest

Sat, Nov 14 - Sat, Nov 21

5:00 am - 11:07 amSTL Lambert-St Louis-PDX Portland

8h 07m1 stop Dallas/Fort Worth

5:00 am - 2:04 pmPDX Portland-STL Lambert-St Louis

7h 04m1 stop Dallas/Fort Worth

$613American Airlines

Tue, Nov 10 - Thu, Nov 12

1:28 pm - 11:36 amSTL Lambert-St Louis-PDX Portland

24h 08m1 stop Las Vegas Harry Reid Intl

8:08 am - 9:59 pmPDX Portland-STL Lambert-St Louis

11h 51m2 stops Seattle/Tacoma Intl Dallas/Fort Worth

$710Multiple Airlines

Thu, Nov 12 - Sun, Nov 15

1:08 pm - 9:29 pmSTL Lambert-St Louis-EUG Eugene

10h 21m2 stops Chicago O'Hare Intl Denver Intl

5:00 am - 3:43 pmEUG Eugene-STL Lambert-St Louis

8h 43m2 stops Denver Intl Chicago O'Hare Intl

$779United Airlines

Thu, Nov 12 - Thu, Nov 19

9:40 am - 9:02 pmSTL Lambert-St Louis-PDX Portland

13h 22m2 stops Chicago O'Hare Intl San Francisco

10:59 am - 10:15 pmPDX Portland-STL Lambert-St Louis

9h 16m1 stop San Francisco

$808United Airlines

Thu, Nov 12 - Sun, Nov 15

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Frontier flights from St. Louis to Oregon

Our best Frontier deals on St. Louis to Oregon flight tickets

Frontier

Dec 7

STL7:54 pmLambert-St Louis

22h 16m

1 stop

PDX4:10 pmPortland

Dec 15

PDX5:10 pmPortland

15h 54m

1 stop

STL11:04 amLambert-St Louis

$258

Frontier

Dec 12

STL7:54 pmLambert-St Louis

19h 09m

1 stop

PDX1:03 pmPortland

Jan 12

PDX1:29 pmPortland

18h 15m

1 stop

STL9:44 amLambert-St Louis

$268

Frontier

Dec 2

STL7:58 pmLambert-St Louis

18h 55m

1 stop

PDX12:53 pmPortland

Dec 6

PDX1:58 pmPortland

18h 59m

1 stop

STL10:57 amLambert-St Louis

$283

Delta flights from St. Louis to Oregon

Our best Delta deals on St. Louis to Oregon flight tickets

Delta

Dec 8

STL3:32 pmLambert-St Louis

6h 52m

1 stop

PDX8:24 pmPortland

Dec 15

PDX1:55 pmPortland

7h 31m

1 stop

STL11:26 pmLambert-St Louis

$359

Delta

Dec 9

STL7:08 amLambert-St Louis

6h 47m

1 stop

EUG11:55 amEugene

Dec 12

EUG5:20 amEugene

6h 01m

1 stop

STL1:21 pmLambert-St Louis

$409

Delta

Feb 25

STL6:29 amLambert-St Louis

12h 03m

2 stops

MFR4:32 pmMedford

Mar 1

MFR12:28 pmMedford

7h 01m

1 stop

STL9:29 pmLambert-St Louis

$414

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Mon 12/7

7:54 pm-4:10 pm

1 stop22h 16m

Portland

Tue 12/15

5:10 pm-11:04 am

1 stop15h 54m

$258

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Sat 12/12

7:54 pm-1:03 pm

1 stop19h 09m

Portland

Tue 1/12

1:29 pm-9:44 am

1 stop18h 15m

$258

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Sat 1/9

6:20 pm-9:32 am

2 stops17h 12m

Portland

Tue 1/12

1:29 pm-9:44 am

1 stop18h 15m

$298

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Wed 12/2

6:30 am-11:41 am

1 stop7h 11m

Portland

Wed 12/9

7:00 am-6:11 pm

1 stop9h 11m

$359

Quickest round-trip

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Tue 12/8

3:32 pm-8:24 pm

1 stop6h 52m

Portland

Tue 12/15

1:55 pm-11:26 pm

1 stop7h 31m

$359

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Mon 12/7

2:17 pm-10:07 pm

1 stop9h 50m

Portland

Tue 12/15

6:00 am-4:30 pm

1 stop8h 30m

$359

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Wed 12/9

1:43 pm-7:55 pm

1 stop8h 12m

Portland

Wed 12/16

2:32 pm-11:34 pm

1 stop7h 02m

$359

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Tue 12/8

6:02 am-12:37 pm

1 stop8h 35m

Portland

Sat 12/12

1:30 pm-10:25 pm

1 stop6h 55m

$359

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Sat 2/13

1:08 pm-8:59 pm

2 stops9h 51m

Portland

Tue 2/16

12:59 pm-10:25 pm

1 stop7h 26m

$360

St. LouisPortland

STL Lambert-St Louis - PDX Portland

STLPDX

Lambert-St Louis

Sat 12/5

7:54 pm-1:03 pm

1 stop19h 09m

Portland

Sat 12/12

7:30 am-4:40 pm

1 stop7h 10m

$394

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 Oregon

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

Other information

What is the cheapest month to fly to Oregon?

The month of April is, on average, the cheapest month to fly to Oregon from St. Louis, with most prices found around $364. The month of September is another great option to travel to Oregon, with average flight prices from St. Louis averaging around $373.

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

On average, the least expensive day to fly to Oregon from St. Louis is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $394. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Oregon is Friday, with ticket prices averaging around $487.

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

According to our data, the cheapest time of day to fly to Oregon is in the morning. momondo users have found flights departing from St. Louis to Oregon in the morning for as low as $279. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Oregon are more costly in the afternoon, with an average ticket price of $447. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

How far in advance should I book a flight from St. Louis to Oregon?

You are more likely to see cheaper flights to Oregon from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Oregon for around $379 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Oregon from St. Louis for as low as $283 on momondo.

What cabin class options are available on St. Louis to Oregon flights?

There are 3 cabin classes available to choose from on St. Louis to Oregon flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Oregon flights?

You could potentially save up to 33% on your flight if you consider stops on a St. Louis to Oregon flight.

Cheap St. Louis to Oregon flight deals and tips

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

Best Price Found	$138
Fastest flight time	5h 54m
Direct flights	None

The best one-way flight to Oregon from St. Louis in the past 72 hours is $138. The best round-trip flight deal from St. Louis to Oregon found on momondo in the last 72 hours is $258.

The fastest flight from St. Louis to Oregon takes 5h 54m

There are no direct flights from St. Louis to Oregon. There are no popular flight routes from St. Louis to Oregon.

Search flight deals

Frequently asked questions about flying from St. Louis to Oregon

When did momondo last update prices for flights from Lambert-St Louis Airport to Oregon?
Prices for flights from Lambert-St Louis Airport to Oregon refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Oregon?
There are 6 operators available for flights from Lambert-St Louis Airport to Oregon as of November 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Oregon?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Oregon.
What documentation or ID do you need to fly to Oregon?
The travel and health documents you'll need for your trip to Oregon 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 Oregon. 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 Oregon?
momondo data reveals that the most frequently booked plane model on the route from St. Louis to Oregon is Boeing 737 MAX 9, representing 30.23% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 25.58%, Boeing 737 at 13.95%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 11.63%.

Best airlines flying from St. Louis to Oregon

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $131	Free Cancellation	Rating 5.5 2,506 reviews	Search Frontier flights
Alaska Airlines	PriceFrom $199	Free Cancellation	Rating 7.9 13,158 reviews	Search Alaska Airlines flights
Delta	PriceFrom $204	Free Cancellation	Rating 7.8 8,699 reviews	Search Delta flights
American Airlines	PriceFrom $216	Free Cancellation	Rating 7.0 12,227 reviews	Search American Airlines flights
Southwest	PriceFrom $217	Free Cancellation	Rating 8.0 4,220 reviews	Search Southwest flights
United Airlines	PriceFrom $248	Free Cancellation	Rating 7.3 10,479 reviews	Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Oregon for you.

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

Yes. momondo allows you to filter the results for St. Louis to Oregon flights to just show those with flexible booking policies.

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

Once you have performed a search for St. Louis to Oregon flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Oregon from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.