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

A quick flight from Oregon to St. Louis can take about 5h 34m. Frontier provides one of the quickest options available for as low as $249. 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 Frontier, with whom users have recently found tickets for as low as $86. However, be on the lookout for offers from American Airlines and Delta, 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 Bend/Redmond - Lambert-St Louis or Boise Air Term. Gowen Fld - Lambert-St Louis, Portland - Lambert-St Louis is the most popular route from Oregon to St. Louis.

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

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

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.

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.

$68+ Flights from Oregon to St. Louis

Q: How much does it cost to fly round-trip from Oregon to St. Louis?

Airfare is below average for this route at the moment. Oregon to St. Louis flights typically cost between $248 and $377 in January. The cheapest round-trip price found within the last 3 days was $193 on Frontier (Jan 29-Feb 1).

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Cheap 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 December 28, 2025.

Sat 12/275:30 amRDM - STL

2 stops10h 24mUnited Airlines

Sat 1/32:45 pmSTL - RDM

1 stop8h 37mUnited Airlines

Deal found 12/26

$500

Mon 12/2912:00 pmPDX - STL

1 stop6h 41mDelta

Fri 1/22:18 pmSTL - PDX

1 stop5h 56mDelta

Deal found 12/26

$548

Sun 12/285:00 amPDX - STL

2 stops9h 27mUnited Airlines

Sun 1/410:30 amSTL - PDX

1 stop11h 13mUnited Airlines

Deal found 12/27

$553

Mon 12/292:45 pmPDX - STL

1 stop5h 37mUnited Airlines

Wed 12/311:05 pmSTL - PDX

1 stop9h 43mUnited Airlines

Deal found 12/26

$593

Mon 12/296:05 amRDM - STL

1 stop5h 18mDelta

Fri 1/21:22 pmSTL - RDM

2 stops12h 37mDelta

Deal found 12/26

$600

Mon 12/292:45 pmPDX - STL

1 stop5h 37mUnited Airlines

Fri 1/26:30 amSTL - PDX

2 stops13h 01mUnited Airlines

Deal found 12/26

$643

Mon 12/2911:59 pmPDX - STL

1 stop6h 57mAmerican Airlines

Wed 12/313:30 pmSTL - PDX

1 stop8h 29mAmerican Airlines

Deal found 12/25

$750

Fri 12/263:25 pmEUG - STL

2 stops15h 10mAmerican Airlines

Mon 12/292:43 pmSTL - EUG

1 stop10h 37mAmerican Airlines

Deal found 12/26

$797

Sun 12/287:30 pmPDX - STL

2 stops11h 54mDelta

Fri 1/23:43 pmSTL - PDX

1 stop6h 51mDelta

Deal found 12/27

$814

Fri 12/2611:00 pmPDX - STL

1 stop7h 35mAlaska Airlines

Mon 12/292:43 pmSTL - PDX

1 stop9h 55mAlaska Airlines

Deal found 12/26

$826

Fri 12/267:00 pmEUG - STL

2 stops12h 05mSouthwest

Mon 12/2911:00 amSTL - EUG

2 stops9h 20mSouthwest

Deal found 12/26

$963

Sun 12/285:10 amPDX - STL

2 stops8h 05mSouthwest

Sun 1/49:50 amSTL - PDX

2 stops7h 35mSouthwest

Deal found 12/27

$1,001

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 December 28, 2025.

Thu 1/2911:28 amPDX - STL

1 stop7h 38mFrontier

Sun 2/19:32 pmSTL - PDX

1 stop15h 46mFrontier

Deal found 12/26

$193

Wed 3/411:46 amPDX - STL

1 stop8h 23mAmerican Airlines

Mon 3/911:47 amSTL - PDX

1 stop9h 29mAmerican Airlines

Deal found 12/26

$249

Fri 1/231:24 pmPDX - STL

1 stop5h 34mUnited Airlines

Fri 1/306:45 amSTL - PDX

1 stop10h 01mUnited Airlines

Deal found 12/27

$249

Wed 3/46:00 amPDX - STL

1 stop8h 45mDelta

Tue 3/106:12 pmSTL - PDX

1 stop7h 42mDelta

Deal found 12/27

$249

Sat 2/286:00 pmBOI - STL

1 stop19h 23mAlaska Airlines

Wed 3/47:00 amSTL - BOI

1 stop8h 58mAlaska Airlines

Deal found 12/26

$296

Tue 3/1010:35 pmPDX - STL

1 stop8h 00mAmerican Airlines

Thu 3/126:00 amSTL - PDX

1 stop6h 48mAmerican Airlines

Deal found 12/27

$249

Mon 2/912:59 pmPDX - STL

1 stop7h 01mUnited Airlines

Sun 2/156:00 pmSTL - PDX

1 stop7h 14mUnited Airlines

Deal found 12/26

$249

Thu 3/55:45 amPDX - STL

1 stop5h 47mDelta

Wed 3/111:39 pmSTL - PDX

1 stop10h 14mDelta

Deal found 12/27

$249

Mon 1/1212:07 pmBOI - STL

2 stops41h 44mFrontier

Sat 1/173:43 pmSTL - BOI

1 stop22h 33mFrontier

Deal found 12/27

$264

Thu 1/296:00 amPDX - STL

1 stop8h 14mAmerican Airlines

Mon 2/23:37 pmSTL - PDX

1 stop8h 34mAmerican Airlines

Deal found 12/26

$249

Tue 3/36:00 amPDX - STL

1 stop6h 54mDelta

Tue 3/103:05 pmSTL - PDX

1 stop8h 07mDelta

Deal found 12/27

$249

Mon 2/21:24 pmPDX - STL

1 stop5h 34mUnited Airlines

Wed 2/411:20 amSTL - PDX

1 stop9h 36mUnited Airlines

Deal found 12/27

$249

Thu 2/2611:59 pmPDX - STL

1 stop6h 53mAmerican Airlines

Sun 3/16:00 amSTL - PDX

1 stop6h 49mAmerican Airlines

Deal found 12/26

$249

Sat 1/2410:47 amPDX - STL

1 stop6h 40mUnited Airlines

Sat 1/3111:20 amSTL - PDX

1 stop9h 36mUnited Airlines

Deal found 12/27

$249

Fri 1/2310:39 amBOI - STL

2 stops11h 44mDelta

Mon 1/263:31 pmSTL - BOI

2 stops9h 28mDelta

Deal found 12/26

$256

Sat 1/179:00 amEUG - STL

1 stop26h 54mAlaska Airlines

Tue 1/202:50 pmSTL - EUG

1 stop8h 40mAlaska Airlines

Deal found 12/26

$324

Tue 1/277:00 amRDM - STL

2 stops12h 38mDelta

Tue 2/36:35 amSTL - RDM

2 stops11h 56mDelta

Deal found 12/26

$256

Sun 2/16:23 amBOI - STL

1 stop6h 31mAlaska Airlines

Wed 2/42:50 pmSTL - BOI

1 stop7h 15mAlaska Airlines

Deal found 12/27

$330

Thu 1/2211:35 amRDM - STL

2 stops9h 50mDelta

Mon 1/263:31 pmSTL - RDM

2 stops9h 16mDelta

Deal found 12/26

$256

Wed 1/211:36 pmEUG - STL

1 stop22h 18mAlaska Airlines

Sat 1/246:19 pmSTL - EUG

1 stop29h 11mAlaska Airlines

Deal found 12/25

$342

Sat 1/1710:15 amBOI - STL

2 stops9h 58mUnited Airlines

Sun 1/186:30 amSTL - BOI

1 stop7h 09mUnited Airlines

Deal found 12/27

$340

Fri 1/231:55 pmBOI - STL

1 stop7h 51mAlaska Airlines

Mon 1/262:50 pmSTL - BOI

1 stop7h 15mAlaska Airlines

Deal found 12/26

$345

Sat 2/285:35 amBOI - STL

1 stop6h 57mDelta

Wed 3/42:22 pmSTL - BOI

2 stops8h 34mDelta

Deal found 12/26

$296

Mon 5/111:37 pmBOI - STL

1 stop9h 10mAmerican Airlines

Tue 5/196:05 amSTL - BOI

1 stop7h 26mAmerican Airlines

Deal found 12/27

$368

Sat 1/175:42 pmMFR - STL

1 stop18h 12mAlaska Airlines

Wed 1/212:50 pmSTL - MFR

1 stop28h 12mAlaska Airlines

Deal found 12/25

$354

Tue 3/2411:13 amMFR - STL

2 stops11h 08mDelta

Wed 3/2510:50 amSTL - MFR

2 stops14h 15mDelta

Deal found 12/26

$315

Thu 1/226:18 pmRDM - STL

1 stop17h 36mAlaska Airlines

Mon 1/262:50 pmSTL - RDM

1 stop24h 04mAlaska Airlines

Deal found 12/26

$357

Sat 1/175:00 amEUG - STL

2 stops10h 43mUnited Airlines

Tue 1/209:57 amSTL - EUG

2 stops15h 12mUnited Airlines

Deal found 12/26

$407

Sun 2/110:39 amBOI - STL

2 stops11h 46mDelta

Wed 2/46:10 amSTL - BOI

1 stop8h 24mDelta

Deal found 12/27

$337

Mon 2/239:02 amRDM - STL

1 stop12h 57mAlaska Airlines

Fri 2/272:47 pmSTL - RDM

1 stop8h 45mAlaska Airlines

Deal found 12/26

$381

Last-minute flights from Oregon to St. Louis
Discover last-minute flight deals from Oregon to St. Louis. Data last updated December 28, 2025 and is based on user searches.

Sun 1/1112:10 pmPDX - STL

1 stop19h 52mFrontier

Thu 1/151:35 pmSTL - PDX

2 stops29h 49mFrontier

Deal found 12/27

$306

Mon 1/1212:07 pmBOI - STL

2 stops41h 44mFrontier

Sat 1/173:43 pmSTL - BOI

1 stop22h 33mFrontier

Deal found 12/27

$264

Sat 1/171:24 pmPDX - STL

1 stop5h 34mUnited Airlines

Tue 1/2011:20 amSTL - PDX

2 stops11h 52mUnited Airlines

Deal found 12/26

$321

Sat 1/171:36 pmEUG - STL

1 stop22h 18mAlaska Airlines

Tue 1/202:50 pmSTL - EUG

1 stop8h 40mAlaska Airlines

Deal found 12/27

$324

Thu 1/2211:35 amRDM - STL

2 stops9h 50mDelta

Mon 1/263:31 pmSTL - RDM

2 stops9h 16mDelta

Deal found 12/26

$256

Fri 1/231:24 pmPDX - STL

1 stop5h 34mUnited Airlines

Fri 1/306:45 amSTL - PDX

1 stop10h 01mUnited Airlines

Deal found 12/27

$249

Fri 1/2310:39 amBOI - STL

2 stops11h 44mDelta

Mon 1/263:31 pmSTL - BOI

2 stops9h 28mDelta

Deal found 12/26

$256

Fri 1/2311:10 amPDX - STL

2 stops10h 13mDelta

Fri 1/303:31 pmSTL - PDX

1 stop7h 01mDelta

Deal found 12/26

$272

Sat 1/248:30 amPDX - STL

2 stops8h 57mUnited Airlines

Sat 1/315:00 pmSTL - PDX

1 stop8h 06mUnited Airlines

Deal found 12/27

$254

Tue 1/2711:35 amRDM - STL

2 stops8h 03mDelta

Tue 2/36:40 amSTL - RDM

1 stop7h 15mDelta

Deal found 12/26

$323

Thu 1/2911:28 amPDX - STL

1 stop7h 38mFrontier

Sun 2/19:32 pmSTL - PDX

1 stop15h 46mFrontier

Deal found 12/26

$193

Thu 1/2911:28 amPDX - STL

1 stop7h 38mMultiple Airlines

Sun 2/19:32 pmSTL - PDX

2 stops24h 55mMultiple Airlines

Deal found 12/26

$223

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 December 28, 2025.

Fri 1/1611:59 amPDX - STL

1 stop24h 49mFrontier

Deal found 12/26

$68

Sun 1/1811:49 amPDX - STL

1 stop29h 02mFrontier

Deal found 12/27

$90

Thu 1/2911:28 amPDX - STL

1 stop7h 38mFrontier

Deal found 12/26

$91

Sun 1/1112:10 pmPDX - STL

1 stop19h 52mFrontier

Deal found 12/26

$93

Thu 1/299:21 pmMFR - STL

1 stop21h 27mMultiple Airlines

Deal found 12/27

$94

Mon 3/912:52 pmPDX - STL

1 stop28h 19mFrontier

Deal found 12/27

$102

Thu 1/1511:59 amPDX - STL

1 stop28h 33mFrontier

Deal found 12/26

$103

Fri 3/612:04 pmPDX - STL

1 stop19h 45mFrontier

Deal found 12/27

$107

Fri 2/1310:18 pmPDX - STL

1 stop17h 28mFrontier

Deal found 12/27

$108

Thu 2/511:28 amPDX - STL

1 stop7h 38mFrontier

Deal found 12/26

$112

Sun 3/16:56 pmPDX - STL

1 stop22h 56mMultiple Airlines

Deal found 12/27

$113

Thu 1/296:05 amMFR - STL

2 stops13h 33mDelta

Deal found 12/27

$148

Find flight deals from Oregon to St. Louis

Most accurate provider	CheapOair 3 stars
Most trusted provider	CheapOair 3 stars
Round-trip from	$193 (Kiwi.com)
One-way from	$68 (Kiwi.com)
Popular in	March
Cheapest in	January
Average price	$459

Provider with most accurate pricing for Portland-Lambert-St Louis flight deals.

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Provider most trusted by Cheapflights users for Portland-Lambert-St Louis flights.

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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. 7% potential increase in price ($31 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 December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 1/29

11:28 am-9:06 pm

1 stop7h 38m

Lambert-St Louis

Sun 2/1

9:32 pm-11:18 am

1 stop15h 46m

$193

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Wed 3/4

11:46 am-10:09 pm

1 stop8h 23m

Lambert-St Louis

Mon 3/9

11:47 am-7:16 pm

1 stop9h 29m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Fri 1/23

1:24 pm-8:58 pm

1 stop5h 34m

Lambert-St Louis

Fri 1/30

6:45 am-2:46 pm

1 stop10h 01m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Wed 3/4

6:00 am-4:45 pm

1 stop8h 45m

Lambert-St Louis

Tue 3/10

6:12 pm-11:54 pm

1 stop7h 42m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Tue 3/10

10:35 pm-8:35 am

1 stop8h 00m

Lambert-St Louis

Thu 3/12

6:00 am-10:48 am

1 stop6h 48m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Mon 2/9

12:59 pm-10:00 pm

1 stop7h 01m

Lambert-St Louis

Sun 2/15

6:00 pm-11:14 pm

1 stop7h 14m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 3/5

5:45 am-1:32 pm

1 stop5h 47m

Lambert-St Louis

Wed 3/11

1:39 pm-9:53 pm

1 stop10h 14m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 1/29

6:00 am-4:14 pm

1 stop8h 14m

Lambert-St Louis

Mon 2/2

3:37 pm-10:11 pm

1 stop8h 34m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Tue 3/3

6:00 am-2:54 pm

1 stop6h 54m

Lambert-St Louis

Tue 3/10

3:05 pm-9:12 pm

1 stop8h 07m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Mon 2/2

1:24 pm-8:58 pm

1 stop5h 34m

Lambert-St Louis

Wed 2/4

11:20 am-6:56 pm

1 stop9h 36m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 52 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 $178). Flying from Oregon to St. Louis in March is currently the most expensive (average of $290). 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.

How much does it cost to fly round-trip from Oregon to St. Louis?

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 5h 34m. Frontier provides one of the quickest options available for as low as $249. 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 Frontier, with whom users have recently found tickets for as low as $86. However, be on the lookout for offers from American Airlines and Delta, 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 Bend/Redmond - Lambert-St Louis or Boise Air Term. Gowen Fld - Lambert-St Louis, Portland - Lambert-St Louis is the most popular route from Oregon to St. Louis.
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 $178). Flying from Oregon to St. Louis in March is currently the most expensive (average of $290). 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.

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Top 6 airlines flying from Oregon to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$158	Average$266	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$192	Average$414	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$226	Average$441	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$226	Average$472	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$246	Average$419	FlexibilityNo cancel fee	On-time63%
Alaska Airlines	Cheapest$249	Average$465	FlexibilityNo cancel fee	On-time75%

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$68+ 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 1/16. 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

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 December 28, 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 December 28, 2025.

Find 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 December 28, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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?

How much does it cost to fly round-trip from Oregon to St. Louis?

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?

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 December 28, 2025.