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$66+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — STL
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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Cheap flight deals from Oregon to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Oregon (USOR) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$120
(CheapOair)

One-way from

$66
(CheapOair)
From Oregon to Lambert-St Louis
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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 January 21, 2025.

This CheapOair deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/245:16 pmPDX - STL
1 stop14h 45mFrontier
Mon 4/286:51 pmSTL - PDX
1 stop7h 51mFrontier
Deal found 1/20$120
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/227:05 amPDX - STL
1 stop6h 35mUnited Airlines
Mon 3/174:30 pmSTL - PDX
1 stop8h 25mUnited Airlines
Deal found 1/21$222
This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2012:59 amPDX - STL
1 stop8h 00mDelta
Mon 2/246:00 amSTL - PDX
1 stop8h 52mDelta
Deal found 1/21$227
This Orbitz deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/227:00 amPDX - STL
1 stop7h 21mMultiple Airlines
Sun 3/211:08 pmSTL - PDX
1 stop11h 32mMultiple Airlines
Deal found 1/19$249
This Southwest deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/44:50 pmPDX - STL
1 stop6h 05mSouthwest
Mon 4/72:35 pmSTL - PDX
2 stops11h 40mSouthwest
Deal found 1/20$298
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/195:45 amBOI - STL
2 stops10h 08mDelta
Wed 2/2610:22 amSTL - BOI
2 stops10h 53mDelta
Deal found 1/20$314
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/191:56 pmBOI - STL
1 stop8h 43mAmerican Airlines
Wed 2/267:15 amSTL - BOI
1 stop7h 01mAmerican Airlines
Deal found 1/20$319
This Alaska Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/97:48 amPDX - STL
2 stops14h 11mAlaska Airlines
Wed 4/163:11 pmSTL - PDX
1 stop7h 40mAlaska Airlines
Deal found 1/20$325
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/61:23 pmEUG - STL
1 stop6h 11mUnited Airlines
Mon 3/104:30 pmSTL - EUG
1 stop7h 04mUnited Airlines
Deal found 1/20$332
This Delta deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/76:20 amRDM - STL
2 stops9h 40mDelta
Mon 3/107:30 pmSTL - RDM
1 stop6h 15mDelta
Deal found 1/19$375
This Southwest deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/165:15 pmBOI - STL
1 stop7h 15mSouthwest
Sun 2/237:30 pmSTL - BOI
1 stop6h 15mSouthwest
Deal found 1/19$379
This Alaska Airlines deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/75:59 pmRDM - STL
1 stop18h 26mAlaska Airlines
Mon 3/107:00 amSTL - RDM
1 stop8h 04mAlaska Airlines
Deal found 1/19$402

Find flights from Oregon to St. Louis within your budget

Customize your flight search to find flights from Oregon to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 4/24

5:16 pm-10:01 am

1 stop14h 45m

Lambert-St Louis

Mon 4/28

6:51 pm-12:42 am

1 stop7h 51m

$120

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Sat 2/22

7:05 am-3:40 pm

1 stop6h 35m

Lambert-St Louis

Mon 3/17

4:30 pm-10:55 pm

1 stop8h 25m

$222

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 2/20

12:59 am-10:59 am

1 stop8h 00m

Lambert-St Louis

Mon 2/24

6:00 am-12:52 pm

1 stop8h 52m

$227

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Sat 2/22

7:00 am-4:21 pm

1 stop7h 21m

Lambert-St Louis

Sun 3/2

11:08 pm-8:40 am

1 stop11h 32m

$249

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Fri 4/4

4:50 pm-12:55 am

1 stop6h 05m

Lambert-St Louis

Mon 4/7

2:35 pm-12:15 am

2 stops11h 40m

$298

BoiseSt. Louis

BOI - STL

BOISTL

Boise Air Term. Gowen Fld

Wed 2/19

5:45 am-4:53 pm

2 stops10h 08m

Lambert-St Louis

Wed 2/26

10:22 am-8:15 pm

2 stops10h 53m

$314

BoiseSt. Louis

BOI - STL

BOISTL

Boise Air Term. Gowen Fld

Wed 2/19

1:56 pm-11:39 pm

1 stop8h 43m

Lambert-St Louis

Wed 2/26

7:15 am-1:16 pm

1 stop7h 01m

$319

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Wed 4/9

7:48 am-11:59 pm

2 stops14h 11m

Lambert-St Louis

Wed 4/16

3:11 pm-8:51 pm

1 stop7h 40m

$325

EugeneSt. Louis

EUG - STL

EUGSTL

Eugene

Thu 3/6

1:23 pm-9:34 pm

1 stop6h 11m

Lambert-St Louis

Mon 3/10

4:30 pm-9:34 pm

1 stop7h 04m

$332

EugeneSt. Louis

EUG - STL

EUGSTL

Eugene

Mon 3/10

6:03 pm-2:25 pm

1 stop18h 22m

Lambert-St Louis

Wed 3/19

3:11 pm-9:00 pm

1 stop7h 49m

$336

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 43 results
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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.

Travel insights for flights from Oregon to St. Louis

Get recent, data-driven insights about flights from Oregon to St. Louis including ideal travel times, pricing trends, and more.

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?

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 January 21, 2025.

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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

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.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated January 21, 2025.
Read through reviews of airlines operating flights from Oregon to St. Louis, such as Delta, United Airlines and Southwest. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,662 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,706 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,984 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,662 reviews

Comfort

8.1

Crew

8.7

Food

7.2

Overall

8.1

Boarding

8.2

Entertainment

7.7

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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?

    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.

  • 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 $66. However, be on the lookout for offers from Alaska 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 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.

  • 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

Traveling to a place near Oregon?

Book flights to Oregon if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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Alternative routes for Oregon to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Oregon to St. Louis

Discover the top 6 airlines that operate flights from Oregon to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$112Average$206FlexibilityNo cancel feeOn-time62%
DeltaCheapest$192Average$410FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$198Average$422FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$225Average$498FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$268Average$526FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$347Average$542FlexibilityNo cancel feeOn-time63%
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