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$96+ 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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PDX
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
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 November 26, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$127
(Kiwi.com)

One-way from

$96
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$390

Good round-trip deal

$454 or less
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
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Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Oregon.
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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 November 26, 2025.

This Delta deal was found by Cheapflights users on 11/24. 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.
Tue 12/166:30 amSTL - PDX
1 stop8h 10mDelta
Thu 12/252:11 pmPDX - STL
1 stop6h 05mDelta
Deal found 11/24$243
This Delta deal was found by Cheapflights users on 11/24. 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.
Tue 12/1612:49 pmSTL - PDX
1 stop6h 54mDelta
Fri 12/262:11 pmPDX - STL
1 stop6h 05mDelta
Deal found 11/24$249
This Delta deal was found by Cheapflights users on 11/25. 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.
Sat 12/136:00 amSTL - PDX
1 stop8h 54mDelta
Fri 1/96:00 amPDX - STL
1 stop7h 00mDelta
Deal found 11/25$268
This Delta deal was found by Cheapflights users on 11/24. 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 12/186:00 amSTL - PDX
1 stop8h 54mDelta
Fri 12/262:11 pmPDX - STL
1 stop6h 05mDelta
Deal found 11/24$274
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/107:43 pmSTL - BOI
1 stop17h 06mMultiple Airlines
Thu 12/119:17 pmBOI - STL
1 stop13h 05mMultiple Airlines
Deal found 11/25$275
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:43 pmSTL - PDX
1 stop18h 00mFrontier
Wed 12/243:59 pmPDX - STL
2 stops22h 25mFrontier
Deal found 11/24$290
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:43 pmSTL - PDX
1 stop18h 00mFrontier
Mon 12/228:45 pmPDX - STL
2 stops35h 17mFrontier
Deal found 11/24$291
This Delta deal was found by Cheapflights users on 11/24. 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.
Tue 12/166:00 amSTL - PDX
2 stops11h 33mDelta
Wed 12/246:50 amPDX - STL
2 stops13h 26mDelta
Deal found 11/24$296
This Delta deal was found by Cheapflights users on 11/24. 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 12/242:18 pmSTL - PDX
2 stops8h 18mDelta
Wed 12/316:15 amPDX - STL
1 stop6h 48mDelta
Deal found 11/24$297
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:43 pmSTL - PDX
1 stop18h 00mFrontier
Tue 12/235:39 pmPDX - STL
2 stops38h 01mFrontier
Deal found 11/24$304
This Alaska Airlines deal was found by Cheapflights users on 11/24. 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 12/157:00 amSTL - BOI
1 stop16h 56mAlaska Airlines
Sun 1/46:08 amBOI - STL
1 stop16h 51mAlaska Airlines
Deal found 11/24$375
This Southwest deal was found by Cheapflights users on 11/24. 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.
Tue 12/168:50 amSTL - BOI
1 stop9h 00mSouthwest
Sat 12/204:20 pmBOI - STL
1 stop8h 00mSouthwest
Deal found 11/24$382

Cheapflights Fare Finder

 
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 November 26, 2025.
Use the filters below to find and compare flights from St. Louis to Oregon that are best for you.

Fly from

St. Louis

Fly to

Oregon

Route

Depart

Return

Price

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 1/7

7:43 pm-11:15 am

1 stop17h 32m

Portland

Sun 1/11

12:10 pm-10:02 am

1 stop19h 52m

$127

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sat 2/14

7:43 pm-11:59 am

1 stop17h 16m

Boise Air Term. Gowen Fld

Thu 2/19

12:54 pm-10:02 am

1 stop20h 08m

$219

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Wed 1/7

3:40 pm-11:12 pm

2 stops9h 32m

Eugene

Sat 1/24

11:30 am-9:38 pm

2 stops8h 08m

$256

St. LouisMedford

STL - MFR

STLMFR

Lambert-St Louis

Sat 2/28

6:10 am-11:12 pm

2 stops19h 02m

Medford

Tue 3/3

11:30 am-12:25 am

2 stops10h 55m

$256

St. LouisRedmond

STL - RDM

STLRDM

Lambert-St Louis

Sat 1/24

6:40 am-9:00 pm

2 stops16h 20m

Bend/Redmond

Tue 1/27

7:00 am-11:25 pm

2 stops14h 25m

$256

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sat 2/14

7:00 am-6:22 pm

2 stops12h 22m

Boise Air Term. Gowen Fld

Thu 2/19

1:51 pm-11:23 pm

2 stops8h 32m

$256

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sat 2/14

7:00 am-6:22 pm

2 stops12h 22m

Boise Air Term. Gowen Fld

Fri 2/20

10:41 am-12:25 am

2 stops12h 44m

$256

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sat 2/14

7:00 am-6:22 pm

2 stops12h 22m

Boise Air Term. Gowen Fld

Wed 2/18

5:40 am-12:25 am

2 stops17h 45m

$256

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sat 2/14

7:00 am-6:22 pm

2 stops12h 22m

Boise Air Term. Gowen Fld

Tue 2/17

1:51 pm-12:25 am

2 stops9h 34m

$256

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Sat 12/13

6:00 am-12:54 pm

1 stop8h 54m

Portland

Fri 1/9

6:00 am-3:00 pm

1 stop7h 00m

$268

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/23

Showing 1-10 of 60 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.

Cheapflights Insights

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

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

Currently, June is the cheapest month in which you can book a flight from St. Louis to Oregon (average of $157). Flying from St. Louis to Oregon in March is currently the most expensive (average of $265). 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 November 26, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 4% on flights from St. Louis to Oregon by exploring options for tickets at noon.

What is the cheapest day to fly from St. Louis to Oregon?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Oregon. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their St. Louis to Oregon flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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

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 November 26, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from St. Louis to Oregon to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,363 reviews

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Alaska Airlines
8.0
Very good
11,363 reviews
Alaska Airlines
8.0
Very good
11,363 reviews

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Southwest
8.0
Very good
4,254 reviews
Alaska Airlines
8.0
Very good
11,363 reviews

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
Delta
7.9
Good
8,003 reviews
Alaska Airlines
8.0
Very good
11,363 reviews

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
United Airlines
7.4
Good
9,050 reviews
Alaska Airlines
8.0
Very good
11,363 reviews

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.
American Airlines
7.2
Good
11,037 reviews
Alaska Airlines
8.0
Very good
11,363 reviews

Comfort

7.8

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

LAX - LIH

The staff were exceptional! They all were kind, accommodating, and professional.

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.

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

    Airlines like Frontier, Delta, and Alaska Airlines fly from St. Louis to Oregon in about 9h 32m. The time it takes to get you to your destination can typically vary by up to 8h. Airlines will cover a distance of 1728 mi. This flight may include one or multiple stops.

  • 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 $103. However, be on the lookout for offers from Delta and American 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 - Medford or Lambert-St Louis - Boise Air Term. Gowen Fld, Lambert-St Louis - Portland is the most popular route from St. Louis to Oregon.

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

    Looking for the cheapest flight from St. Louis to Oregon? While on average our users pay $683, our data indicates the cheapest price to be $229. The most popular route (Lambert-St Louis - Portland), is priced around $239.

  • 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, June is the cheapest month in which you can book a flight from St. Louis to Oregon (average of $157). Flying from St. Louis to Oregon in March is currently the most expensive (average of $265). 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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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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$132Average$245FlexibilityNo cancel feeOn-time62%
DeltaCheapest$168Average$416FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$188Average$486FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$226Average$417FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$229Average$471FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$233Average$516FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$338Average$520FlexibilityNo cancel feeOn-time85%

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