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$60+ Cheap flights from St. Louis (STL) to Oregon

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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PDX
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from St. Louis to Oregon

Keep the following information in mind while searching for St. Louis to Oregon flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$140
(CheapOair)

One-way from

$60
(CheapOair)

Popular in

March

Cheapest in

September

Average price

$376
Provider with most accurate pricing for Lambert-St Louis-Portland flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Portland flights.
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From Lambert-St Louis to Oregon
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One-way flight from Lambert-St Louis to Oregon
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from St. Louis to Oregon

Cheapest flights from St. Louis to Oregon
Explore the most affordable flight options available from St. Louis to Oregon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This CheapOair deal was found by Cheapflights users on 2/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/84:07 pmSTL - PDX
1 stop10h 31mFrontier
Sun 5/116:20 amPDX - STL
1 stop24h 49mFrontier
Deal found 2/19$140
This Expedia deal was found by Cheapflights users on 2/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/197:03 pmSTL - PDX
1 stop7h 34mMultiple Airlines
Wed 4/21:25 pmPDX - STL
1 stop8h 34mMultiple Airlines
Deal found 2/18$194
This Delta deal was found by Cheapflights users on 2/19. 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.
Thu 4/32:20 pmSTL - PDX
1 stop5h 47mDelta
Tue 4/85:40 amPDX - STL
1 stop5h 39mDelta
Deal found 2/19$227
This United Airlines deal was found by Cheapflights users on 2/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/15:54 pmSTL - PDX
1 stop8h 36mUnited Airlines
Mon 4/711:30 pmPDX - STL
1 stop8h 28mUnited Airlines
Deal found 2/19$228
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Wed 4/166:44 amSTL - PDX
1 stop6h 08mAlaska Airlines
Wed 4/161:25 pmPDX - STL
1 stop8h 34mAlaska Airlines
Deal found 2/19$241
This American Airlines deal was found by Cheapflights users on 2/18. 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 5/75:00 amSTL - PDX
1 stop7h 33mAmerican Airlines
Thu 8/1411:59 pmPDX - STL
1 stop6h 56mAmerican Airlines
Deal found 2/18$293
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Wed 4/26:44 amSTL - BOI
1 stop6h 48mAlaska Airlines
Sun 4/69:40 amBOI - STL
1 stop13h 19mAlaska Airlines
Deal found 2/19$303
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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.
Mon 3/103:21 pmSTL - EUG
1 stop7h 49mAlaska Airlines
Thu 3/131:12 pmEUG - STL
1 stop8h 47mAlaska Airlines
Deal found 2/20$326
This Delta deal was found by Cheapflights users on 2/20. 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.
Mon 3/107:30 pmSTL - EUG
1 stop6h 21mDelta
Fri 3/145:45 amEUG - STL
1 stop5h 38mDelta
Deal found 2/20$327
This Southwest deal was found by Cheapflights users on 2/19. 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.
Wed 3/264:15 pmSTL - PDX
2 stops9h 25mSouthwest
Wed 4/21:40 pmPDX - STL
1 stop6h 45mSouthwest
Deal found 2/19$338
This Southwest deal was found by Cheapflights users on 2/19. 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.
Fri 5/96:40 pmSTL - BOI
1 stop6h 15mSouthwest
Mon 5/125:35 amBOI - STL
1 stop6h 30mSouthwest
Deal found 2/19$344
This Delta deal was found by Cheapflights users on 2/20. 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.
Thu 5/82:15 pmSTL - BOI
2 stops10h 48mDelta
Mon 5/125:45 pmBOI - STL
1 stop5h 52mDelta
Deal found 2/20$357

Find flights from St. Louis to Oregon within your budget

Customize your flight search to find flights from St. Louis to Oregon 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 February 20, 2025.

Fly from

St. Louis

Fly to

Oregon

Route

Depart

Return

Price

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Thu 5/8

4:07 pm-12:38 am

1 stop10h 31m

Portland

Sun 5/11

6:20 am-9:09 am

1 stop24h 49m

$140

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 3/19

7:03 pm-12:37 am

1 stop7h 34m

Portland

Wed 4/2

1:25 pm-11:59 pm

1 stop8h 34m

$194

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Thu 4/3

2:20 pm-6:07 pm

1 stop5h 47m

Portland

Tue 4/8

5:40 am-1:19 pm

1 stop5h 39m

$227

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 4/1

5:54 pm-12:30 am

1 stop8h 36m

Portland

Mon 4/7

11:30 pm-9:58 am

1 stop8h 28m

$228

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 4/16

6:44 am-10:52 am

1 stop6h 08m

Portland

Wed 4/16

1:25 pm-11:59 pm

1 stop8h 34m

$241

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 5/7

5:00 am-10:33 am

1 stop7h 33m

Portland

Thu 8/14

11:59 pm-8:55 am

1 stop6h 56m

$293

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Wed 4/2

6:44 am-12:32 pm

1 stop6h 48m

Boise Air Term. Gowen Fld

Sun 4/6

9:40 am-11:59 pm

1 stop13h 19m

$303

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Mon 3/10

3:21 pm-9:10 pm

1 stop7h 49m

Eugene

Thu 3/13

1:12 pm-11:59 pm

1 stop8h 47m

$326

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Mon 3/10

7:30 pm-11:51 pm

1 stop6h 21m

Eugene

Fri 3/14

5:45 am-1:23 pm

1 stop5h 38m

$327

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 3/26

4:15 pm-11:40 pm

2 stops9h 25m

Portland

Wed 4/2

1:40 pm-10:25 pm

1 stop6h 45m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 43 results
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Best time to book a flight from St. Louis to Oregon

Have a flexible travel schedule? Discover the best time to fly to Oregon from St. Louis 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 St. Louis to Oregon

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

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

Currently, November is the cheapest month in which you can book a flight from St. Louis to Oregon (average of $277). Flying from St. Louis to Oregon in March is currently the most expensive (average of $376). 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 STL to OR?

Find hourly flight availability from St. Louis to Oregon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

When flying from St. Louis to Oregon, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Oregon by month

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

In terms of precipitation, rainfall in Oregon ranges from 0.7 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Oregon when rainfall is around 0.7 in.

Temperature in Oregon by month

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

If weather is an important factor for your trip to Oregon, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Oregon

Get insights into the airlines that provide service to Oregon. 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 Oregon. Reviews last updated February 20, 2025.
Read through reviews of airlines operating flights from St. Louis to Oregon, such as Southwest, Alaska Airlines and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Food

7.1

Crew

8.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Food

7.1

Crew

8.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Food

7.1

Crew

8.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Food

7.1

Crew

8.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Food

7.1

Crew

8.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Entertainment

7.6

Food

7.1

Crew

8.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Oregon. 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 from for flights from St. Louis to Oregon?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Oregon. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • How popular is this St. Louis to Oregon flight route?

    The Lambert-St Louis to Oregon flight path was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $60. However, be on the lookout for offers from American Airlines and Alaska Airlines, as they are both options that can get you from St. Louis to Oregon for a low price.

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

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Oregon 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 St. Louis to Oregon?

    Currently, November is the cheapest month in which you can book a flight from St. Louis to Oregon (average of $277). Flying from St. Louis to Oregon in March is currently the most expensive (average of $376). 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

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Alternative routes for St. Louis to Oregon

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from St. Louis to Oregon

Discover the top 7 airlines that operate flights from St. Louis to Oregon. 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$94Average$180FlexibilityNo cancel feeOn-time65%
FrontierCheapest$100Average$191FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$177Average$488FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$215Average$499FlexibilityNo cancel feeOn-time75%
DeltaCheapest$216Average$478FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$251Average$530FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$286Average$486FlexibilityNo cancel feeOn-time63%
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