How long is the flight from Oregon to St. Louis?

A quick flight from Oregon to St. Louis can take about 7h 18m. Alaska Airlines provides one of the quickest options available for as low as $248. Airlines will cover a distance of 1702 mi. This flight may include one or multiple stops.

What are the cheapest airlines to fly from Oregon to St. Louis one-way?

The cheapest airline one-way is Hawaiian Airlines, with whom users have recently found tickets for as low as $124. However, be on the lookout for offers from Alaska Airlines and United Airlines, as they are both options that can get you from Oregon to St. Louis for a low price.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What are the most popular routes from Oregon to St. Louis?

While some choose either Boise Air Term. Gowen Fld - Lambert-St Louis or Eugene - Lambert-St Louis, Portland - Lambert-St Louis is the most popular route from Oregon to St. Louis.

What are the cheapest flights from Oregon to St. Louis?

On average you can expect to pay $376 for a flight from Oregon to St. Louis. The cheapest flight overall is $268 while the most popular route, (Portland - Lambert-St Louis) is currently priced at $184.

What are the most popular airlines that fly from Oregon to St. Louis?

The most popular airlines flying from Oregon to St. Louis are American Airlines, Alaska Airlines and Delta. Something to consider prior to booking your flight.

What airport do you fly into for flights to St. Louis from Oregon?

Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Oregon.

Can I find deals for flights from Oregon to St. Louis that include hotel bookings?

Yes. In addition to deals on Oregon to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Oregon to St. Louis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oregon to St. Louis.

Can I find deals for business class flights from Oregon to St. Louis?

Yes. Cheapflights offers flight deals from Oregon to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$79+ Cheap Flights from Oregon to St. Louis

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Cheap flight deals from Oregon to St. Louis

Round-trip from	$248 (Hawaiian Airlines)
One-way from	$79 (Priceline)
Popular in	March
Cheapest in	January
Average price	$318
Good one-way deal	$292 or less

From Oregon to Lambert-St Louis

Search Deals

One-way flight from Oregon to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($21 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Price to beat on a one-way flight from Oregon to Lambert-St Louis.

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Find flight deals from Oregon to St. Louis

Cheapest flights from Oregon to St. Louis
Explore the most affordable flight options available from Oregon to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Fri 10/241:25 pmPDX - STL

1 stop8h 38mHawaiian Airlines

Tue 10/287:00 amSTL - PDX

1 stop7h 38mHawaiian Airlines

Deal found 9/15

$248

Thu 10/305:10 pmPDX - STL

1 stop5h 14mDelta

Sun 11/25:00 amSTL - PDX

1 stop8h 50mDelta

Deal found 9/15

$249

Mon 11/1710:03 amPDX - STL

2 stops21h 04mFrontier

Wed 12/37:43 pmSTL - PDX

1 stop18h 14mFrontier

Deal found 9/16

$251

Fri 10/2410:34 amPDX - STL

2 stops20h 33mFrontier

Mon 10/277:52 pmSTL - PDX

1 stop18h 04mFrontier

Deal found 9/16

$252

Wed 10/1512:43 pmPDX - STL

1 stop18h 24mFrontier

Wed 10/227:52 pmSTL - PDX

2 stops39h 47mFrontier

Deal found 9/15

$254

Mon 9/2912:07 pmPDX - STL

2 stops18h 59mMultiple Airlines

Tue 10/77:52 pmSTL - PDX

1 stop17h 56mMultiple Airlines

Deal found 9/15

$256

Fri 9/2611:23 amPDX - STL

1 stop7h 17mFrontier

Sun 9/282:38 pmSTL - PDX

1 stop29h 49mFrontier

Deal found 9/16

$258

Tue 10/2812:35 pmPDX - STL

2 stops9h 35mSouthwest

Fri 10/311:45 pmSTL - PDX

2 stops9h 45mSouthwest

Deal found 9/15

$259

Fri 11/145:30 amPDX - STL

2 stops11h 50mSouthwest

Sun 11/165:45 pmSTL - PDX

1 stop8h 35mSouthwest

Deal found 9/15

$260

Fri 9/267:03 pmPDX - STL

2 stops36h 03mFrontier

Mon 9/294:00 pmSTL - PDX

2 stops32h 34mFrontier

Deal found 9/16

$261

Mon 9/296:05 amPDX - STL

1 stop25h 01mMultiple Airlines

Wed 10/86:33 amSTL - PDX

1 stop7h 52mMultiple Airlines

Deal found 9/15

$265

Thu 12/116:44 amBOI - STL

1 stop8h 52mAmerican Airlines

Tue 12/235:16 pmSTL - BOI

1 stop6h 40mAmerican Airlines

Deal found 9/15

$287

Best flights from Oregon to St. Louis
Discover carefully curated flight deals from Oregon to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2025.

Sat 11/86:00 amPDX - STL

1 stop7h 18mAlaska Airlines

Sat 11/157:00 amSTL - PDX

1 stop7h 38mAlaska Airlines

Deal found 9/15

$248

Fri 10/241:25 pmPDX - STL

1 stop8h 38mHawaiian Airlines

Tue 10/287:00 amSTL - PDX

1 stop7h 38mHawaiian Airlines

Deal found 9/15

$248

Fri 10/2410:58 pmPDX - STL

1 stop8h 39mDelta

Sun 10/262:15 pmSTL - PDX

1 stop9h 33mDelta

Deal found 9/17

$249

Mon 12/811:19 pmPDX - STL

1 stop9h 31mUnited Airlines

Fri 12/125:30 pmSTL - PDX

1 stop9h 14mUnited Airlines

Deal found 9/16

$249

Wed 11/55:00 amPDX - STL

2 stops10h 20mSouthwest

Thu 11/65:45 pmSTL - PDX

1 stop8h 35mSouthwest

Deal found 9/17

$254

Thu 12/116:44 amBOI - STL

1 stop8h 52mAmerican Airlines

Tue 12/235:16 pmSTL - BOI

1 stop6h 40mAmerican Airlines

Deal found 9/15

$287

Sun 10/512:22 pmBOI - STL

1 stop19h 44mFrontier

Wed 10/87:52 pmSTL - BOI

1 stop16h 51mFrontier

Deal found 9/15

$302

Mon 10/612:40 amPDX - STL

1 stop6h 11mDelta

Tue 10/73:30 pmSTL - PDX

1 stop6h 56mDelta

Deal found 9/17

$249

Mon 11/2412:35 amPDX - STL

1 stop6h 20mDelta

Tue 12/27:56 pmSTL - PDX

1 stop6h 09mDelta

Deal found 9/15

$249

Fri 10/241:28 pmBOI - STL

1 stop8h 50mAmerican Airlines

Mon 10/276:23 pmSTL - BOI

1 stop6h 09mAmerican Airlines

Deal found 9/16

$322

Fri 10/242:39 pmBOI - STL

1 stop5h 07mUnited Airlines

Mon 10/275:29 pmSTL - BOI

1 stop6h 59mUnited Airlines

Deal found 9/14

$322

Wed 10/2212:40 amPDX - STL

1 stop6h 11mDelta

Mon 10/273:30 pmSTL - PDX

1 stop6h 56mDelta

Deal found 9/16

$274

Sat 10/1112:40 pmEUG - STL

2 stops9h 23mAlaska Airlines

Tue 11/47:00 amSTL - EUG

2 stops10h 27mAlaska Airlines

Deal found 9/16

$345

Fri 10/247:59 pmPDX - STL

2 stops10h 52mDelta

Mon 10/273:30 pmSTL - PDX

1 stop6h 56mDelta

Deal found 9/17

$278

Tue 3/35:30 amEUG - STL

2 stops16h 26mAlaska Airlines

Wed 3/47:00 amSTL - EUG

2 stops10h 13mAlaska Airlines

Deal found 9/14

$345

Fri 10/247:00 amBOI - STL

2 stops11h 20mSouthwest

Mon 10/274:40 pmSTL - BOI

2 stops9h 00mSouthwest

Deal found 9/16

$398

Sat 11/82:58 pmRDM - STL

1 stop6h 53mAmerican Airlines

Tue 11/112:29 pmSTL - RDM

1 stop6h 56mAmerican Airlines

Deal found 9/15

$367

Thu 1/227:25 pmRDM - STL

2 stops12h 19mDelta

Mon 1/267:30 amSTL - RDM

2 stops13h 10mDelta

Deal found 9/16

$280

Tue 10/72:41 pmMFR - STL

1 stop7h 22mHawaiian Airlines

Sun 10/126:33 amSTL - MFR

1 stop6h 43mHawaiian Airlines

Deal found 9/16

$419

Mon 11/175:57 pmRDM - STL

1 stop19h 21mAlaska Airlines

Wed 11/197:00 amSTL - RDM

1 stop12h 04mAlaska Airlines

Deal found 9/15

$376

Mon 11/172:23 pmPDX - STL

2 stops8h 23mDelta

Wed 12/32:36 pmSTL - PDX

2 stops11h 40mDelta

Deal found 9/16

$287

Thu 1/225:45 pmRDM - STL

1 stop18h 07mAlaska Airlines

Mon 1/262:55 pmSTL - RDM

2 stops25h 51mAlaska Airlines

Deal found 9/15

$380

Tue 9/305:43 amMFR - STL

1 stop6h 56mHawaiian Airlines

Sat 10/46:33 amSTL - MFR

1 stop6h 43mHawaiian Airlines

Deal found 9/15

$460

Sat 11/811:25 amRDM - STL

2 stops7h 58mDelta

Tue 11/1112:49 pmSTL - RDM

2 stops8h 05mDelta

Deal found 9/15

$294

Tue 10/76:00 amMFR - STL

2 stops8h 32mUnited Airlines

Sun 10/125:00 amSTL - MFR

2 stops10h 11mUnited Airlines

Deal found 9/16

$482

Fri 10/241:38 pmRDM - STL

1 stop8h 25mAlaska Airlines

Mon 10/277:00 amSTL - RDM

1 stop12h 04mAlaska Airlines

Deal found 9/14

$386

Tue 11/253:35 pmMFR - STL

1 stop6h 19mHawaiian Airlines

Tue 12/27:00 amSTL - MFR

1 stop8h 16mHawaiian Airlines

Deal found 9/17

$501

Tue 10/147:00 amEUG - STL

2 stops15h 24mDelta

Sat 11/16:00 amSTL - EUG

2 stops12h 29mDelta

Deal found 9/16

$314

Thu 11/206:28 amBOI - STL

1 stop7h 50mAlaska Airlines

Sun 11/234:15 pmSTL - BOI

1 stop29h 47mAlaska Airlines

Deal found 9/16

$394

Tue 9/306:00 amMFR - STL

3 stops14h 00mUnited Airlines

Sat 10/411:10 amSTL - MFR

2 stops11h 56mUnited Airlines

Deal found 9/15

$566

Last-minute flights from Oregon to St. Louis
Discover last-minute flight deals from Oregon to St. Louis. Data last updated September 17, 2025 and is based on user searches.

Fri 9/2611:23 amPDX - STL

1 stop7h 17mFrontier

Sun 9/282:38 pmSTL - PDX

1 stop29h 49mFrontier

Deal found 9/16

$258

Fri 9/267:03 pmPDX - STL

2 stops36h 03mFrontier

Mon 9/294:00 pmSTL - PDX

2 stops32h 34mFrontier

Deal found 9/16

$261

Sun 9/286:05 amPDX - STL

1 stop25h 01mFrontier

Wed 10/17:55 pmSTL - PDX

2 stops48h 23mFrontier

Deal found 9/16

$267

Mon 9/2912:07 pmPDX - STL

2 stops18h 59mMultiple Airlines

Tue 10/77:52 pmSTL - PDX

1 stop17h 56mMultiple Airlines

Deal found 9/15

$256

Mon 9/296:05 amPDX - STL

1 stop25h 01mMultiple Airlines

Wed 10/86:33 amSTL - PDX

1 stop7h 52mMultiple Airlines

Deal found 9/15

$265

Sun 10/512:22 pmBOI - STL

1 stop19h 44mFrontier

Wed 10/87:52 pmSTL - BOI

1 stop16h 51mFrontier

Deal found 9/15

$302

Tue 10/72:30 pmPDX - STL

1 stop7h 33mAlaska Airlines

Wed 10/156:33 amSTL - PDX

2 stops12h 21mAlaska Airlines

Deal found 9/15

$270

Wed 10/1512:43 pmPDX - STL

1 stop18h 24mFrontier

Wed 10/227:52 pmSTL - PDX

2 stops39h 47mFrontier

Deal found 9/15

$254

Fri 10/241:25 pmPDX - STL

1 stop8h 38mHawaiian Airlines

Tue 10/287:00 amSTL - PDX

1 stop7h 38mHawaiian Airlines

Deal found 9/15

$248

Fri 10/2410:34 amPDX - STL

2 stops20h 33mFrontier

Mon 10/277:52 pmSTL - PDX

1 stop18h 04mFrontier

Deal found 9/16

$252

Tue 10/2812:35 pmPDX - STL

2 stops9h 35mSouthwest

Fri 10/311:45 pmSTL - PDX

2 stops9h 45mSouthwest

Deal found 9/15

$259

Thu 10/309:58 amPDX - STL

1 stop6h 47mDelta

Sun 11/25:00 amSTL - PDX

1 stop8h 50mDelta

Deal found 9/17

$249

One-way flights from Oregon to St. Louis
Search for one-way flight options from Oregon to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 17, 2025.

Mon 10/1311:45 amPDX - STL

1 stop7h 19mFrontier

Deal found 9/15

$79

Sun 11/23:26 pmPDX - STL

1 stop15h 41mFrontier

Deal found 9/15

$81

Wed 10/1512:43 pmPDX - STL

1 stop18h 24mFrontier

Deal found 9/15

$86

Thu 10/1612:43 pmPDX - STL

1 stop18h 24mFrontier

Deal found 9/15

$88

Thu 10/2312:43 pmPDX - STL

1 stop18h 24mFrontier

Deal found 9/15

$89

Wed 9/247:15 amPDX - STL

1 stop23h 51mFrontier

Deal found 9/16

$90

Tue 9/308:06 amPDX - STL

1 stop23h 00mFrontier

Deal found 9/15

$91

Fri 10/1712:43 pmPDX - STL

1 stop18h 24mFrontier

Deal found 9/16

$105

Tue 10/2812:52 pmPDX - STL

1 stop18h 15mFrontier

Deal found 9/17

$112

Mon 10/2011:45 amPDX - STL

1 stop7h 19mFrontier

Deal found 9/16

$114

Mon 10/2711:45 amPDX - STL

1 stop7h 19mFrontier

Deal found 9/15

$115

Sat 2/285:30 amBOI - STL

1 stop7h 22mAlaska Airlines

Deal found 9/15

$148

Fly from

Fly to

Route

Depart

Return

Price

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Sat 11/8

6:00 am-3:18 pm

1 stop7h 18m

Lambert-St Louis

Sat 11/15

7:00 am-12:38 pm

1 stop7h 38m

$248

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Fri 10/24

1:25 pm-12:03 am

1 stop8h 38m

Lambert-St Louis

Tue 10/28

7:00 am-12:38 pm

1 stop7h 38m

$248

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Fri 10/24

10:58 pm-9:37 am

1 stop8h 39m

Lambert-St Louis

Sun 10/26

2:15 pm-9:48 pm

1 stop9h 33m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Mon 12/8

11:19 pm-10:50 am

1 stop9h 31m

Lambert-St Louis

Fri 12/12

5:30 pm-12:44 am

1 stop9h 14m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Mon 10/6

12:40 am-8:51 am

1 stop6h 11m

Lambert-St Louis

Tue 10/7

3:30 pm-8:26 pm

1 stop6h 56m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Mon 11/24

12:35 am-8:55 am

1 stop6h 20m

Lambert-St Louis

Tue 12/2

7:56 pm-12:05 am

1 stop6h 09m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Wed 11/5

5:00 am-5:20 pm

2 stops10h 20m

Lambert-St Louis

Thu 11/6

5:45 pm-12:20 am

1 stop8h 35m

$254

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Wed 10/22

12:40 am-8:51 am

1 stop6h 11m

Lambert-St Louis

Mon 10/27

3:30 pm-8:26 pm

1 stop6h 56m

$274

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Fri 10/24

7:59 pm-8:51 am

2 stops10h 52m

Lambert-St Louis

Mon 10/27

3:30 pm-8:26 pm

1 stop6h 56m

$278

RedmondSt. Louis

RDM - STL

RDMSTL

Bend/Redmond

Thu 1/22

7:25 pm-9:44 am

2 stops12h 19m

Lambert-St Louis

Mon 1/26

7:30 am-6:40 pm

2 stops13h 10m

$280

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 60 results

...

Best time to book a flight from Oregon to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Oregon with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Oregon to St. Louis

What is the cheapest month to book a flight from Oregon to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Oregon to St. Louis (average of $311). Flying from Oregon to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from OR to STL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Oregon to St. Louis as you normally would.

Related info for your journey

What airport do you fly into for flights to St. Louis from Oregon?
Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Oregon.
How long is the flight from Oregon to St. Louis?
A quick flight from Oregon to St. Louis can take about 7h 18m. Alaska Airlines provides one of the quickest options available for as low as $248. Airlines will cover a distance of 1702 mi. This flight may include one or multiple stops.
What are the cheapest airlines to fly from Oregon to St. Louis one-way?
The cheapest airline one-way is Hawaiian Airlines, with whom users have recently found tickets for as low as $124. However, be on the lookout for offers from Alaska Airlines and United Airlines, as they are both options that can get you from Oregon to St. Louis for a low price.
What are the most popular routes from Oregon to St. Louis?
While some choose either Boise Air Term. Gowen Fld - Lambert-St Louis or Eugene - Lambert-St Louis, Portland - Lambert-St Louis is the most popular route from Oregon to St. Louis.
What are the cheapest flights from Oregon to St. Louis?
On average you can expect to pay $376 for a flight from Oregon to St. Louis. The cheapest flight overall is $268 while the most popular route, (Portland - Lambert-St Louis) is currently priced at $184.
Can I find deals for flights from Oregon to St. Louis that include hotel bookings?
Yes. In addition to deals on Oregon to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Oregon to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oregon to St. Louis.
Can I find deals for business class flights from Oregon to St. Louis?
Yes. Cheapflights offers flight deals from Oregon to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Oregon to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Oregon to St. Louis (average of $311). Flying from Oregon to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Edwardsville

O'Fallon

Fairview Heights

Maryland Heights

Collinsville

Eureka

Glencoe

St. Peters

Chesterfield

Alton

Farmington

Festus

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Top 6 airlines flying from Oregon to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$118	Average$254	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$192	Average$464	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$226	Average$414	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$226	Average$518	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$247	Average$426	FlexibilityNo cancel fee	On-time63%
Alaska Airlines	Cheapest$262	Average$473	FlexibilityNo cancel fee	On-time75%

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$79+ Cheap flights from Oregon to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/13. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Oregon to St. Louis

Keep the following information in mind while searching for Oregon to St. Louis flight deals. Data was last updated September 17, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good one-way deal

Find flight deals from Oregon to St. Louis

Cheapest flights from Oregon to St. LouisExplore the most affordable flight options available from Oregon to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Explore the most affordable flight options available from Oregon to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Oregon to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Oregon with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Oregon to St. Louis

What is the cheapest month to book a flight from Oregon to St. Louis?

What is the cheapest time of day to fly from OR to STL?

Find hourly flight availability from Oregon to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

Related info for your journey

Find useful and relevant information for your journey from Oregon to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to St. Louis from Oregon?

How long is the flight from Oregon to St. Louis?

What are the cheapest airlines to fly from Oregon to St. Louis one-way?

What are the most popular routes from Oregon to St. Louis?

What are the cheapest flights from Oregon to St. Louis?

Can I find deals for flights from Oregon to St. Louis that include hotel bookings?

How can I find direct flights from Oregon to St. Louis?

Can I find deals for business class flights from Oregon to St. Louis?

What is the cheapest month to book a flight from Oregon to St. Louis?

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Alternative routes for Oregon to St. Louis

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Top 6 airlines flying from Oregon to St. Louis

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Cheapest flights from Oregon to St. Louis
Explore the most affordable flight options available from Oregon to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.