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$68+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PDX
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Delta deal was found by Cheapflights users on 12/17. 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 12/257:20 amSTL - PDX
1 stop7h 19mDelta
Wed 12/3112:16 pmPDX - STL
1 stop8h 00mDelta
Deal found 12/17$249
This Delta deal was found by Cheapflights users on 12/16. 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 12/246:05 amSTL - PDX
1 stop8h 55mDelta
Wed 12/312:11 pmPDX - STL
1 stop6h 05mDelta
Deal found 12/16$344
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/317:43 pmSTL - BOI
1 stop17h 00mFrontier
Sun 1/412:38 pmBOI - STL
2 stops31h 47mFrontier
Deal found 12/16$403
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/259:00 amSTL - PDX
2 stops11h 48mUnited Airlines
Thu 1/12:45 pmPDX - STL
1 stop5h 37mUnited Airlines
Deal found 12/17$407
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/259:55 amSTL - PDX
2 stops12h 53mUnited Airlines
Wed 12/3111:45 pmPDX - STL
2 stops16h 09mUnited Airlines
Deal found 12/17$412
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/315:19 pmSTL - PDX
1 stop22h 05mFrontier
Mon 1/58:45 pmPDX - STL
2 stops35h 17mFrontier
Deal found 12/17$419
This Delta deal was found by Cheapflights users on 12/17. 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.
Sun 12/216:05 amSTL - PDX
1 stop7h 00mDelta
Wed 12/3112:16 pmPDX - STL
1 stop8h 00mDelta
Deal found 12/17$421
This Delta deal was found by Cheapflights users on 12/16. 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 12/236:05 amSTL - PDX
1 stop7h 00mDelta
Wed 12/312:11 pmPDX - STL
1 stop6h 05mDelta
Deal found 12/16$424
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/315:19 pmSTL - PDX
1 stop22h 05mFrontier
Thu 1/812:05 pmPDX - STL
2 stops22h 07mFrontier
Deal found 12/17$441
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/315:19 pmSTL - PDX
1 stop22h 05mFrontier
Fri 1/96:34 pmPDX - STL
2 stops13h 28mFrontier
Deal found 12/17$442
This Delta deal was found by Cheapflights users on 12/16. 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 12/246:05 amSTL - PDX
1 stop8h 55mDelta
Sun 12/282:11 pmPDX - STL
1 stop6h 05mDelta
Deal found 12/16$471
This Kiwi.com deal was found by Cheapflights users on 12/15. 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.
Fri 12/198:42 pmSTL - EUG
1 stop15h 35mMultiple Airlines
Tue 12/309:49 pmEUG - STL
2 stops33h 51mMultiple Airlines
Deal found 12/15$516

Find 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 December 18, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$200
(Kiwi.com)

One-way from

$68
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$397

Good round-trip deal

$270 or less
Provider with most accurate pricing for Lambert-St Louis-Portland flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Portland flights.
Search Deals
From Lambert-St Louis to Oregon
Search Deals
One-way flight from Lambert-St Louis to Oregon
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Oregon.
Search Deals

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 December 18, 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. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sat 1/31

8:22 pm-11:12 am

2 stops39h 50m

Boise Air Term. Gowen Fld

Fri 2/6

12:07 pm-2:46 pm

1 stop25h 39m

$200

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sun 2/1

12:03 pm-11:12 am

1 stop24h 09m

Boise Air Term. Gowen Fld

Fri 2/6

12:07 pm-6:44 pm

1 stop5h 37m

$225

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 2/10

6:30 am-11:57 am

1 stop7h 27m

Portland

Sat 2/14

7:00 am-4:02 pm

1 stop7h 02m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 1/13

6:00 am-12:18 pm

1 stop8h 18m

Portland

Tue 1/20

1:24 pm-8:58 pm

1 stop5h 34m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 1/14

6:00 am-12:18 pm

1 stop8h 18m

Portland

Wed 1/21

5:00 am-1:16 pm

1 stop6h 16m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 1/7

4:35 pm-10:53 pm

1 stop8h 18m

Portland

Sat 1/10

12:57 pm-10:00 pm

1 stop7h 03m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 3/4

6:00 pm-11:14 pm

1 stop7h 14m

Portland

Wed 3/11

3:45 pm-11:34 pm

1 stop5h 49m

$249

St. LouisMedford

STL - MFR

STLMFR

Lambert-St Louis

Thu 1/8

6:35 am-4:40 pm

2 stops12h 05m

Medford

Mon 1/12

12:05 pm-11:25 pm

2 stops9h 20m

$256

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sat 1/31

6:40 am-6:28 pm

2 stops12h 48m

Boise Air Term. Gowen Fld

Fri 2/6

1:40 pm-11:23 pm

2 stops8h 43m

$256

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 3/4

3:38 pm-8:30 pm

1 stop6h 52m

Portland

Wed 3/11

7:38 pm-9:46 am

2 stops12h 08m

$272

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 59 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, January is the cheapest month in which you can book a flight from St. Louis to Oregon (average of $150). Flying from St. Louis to Oregon in March is currently the most expensive (average of $267). 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 December 18, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 6% on flights from St. Louis to Oregon by exploring options for tickets in the afternoon.

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.

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 December 18, 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
11,477 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,477 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
7.9
Good
4,250 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,005 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,091 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,054 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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, United Airlines, and Delta fly from St. Louis to Oregon in about 7h 27m. The time it takes to get you to your destination can typically vary by up to 32h 23m. Airlines will cover a distance of 1702 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 $75. 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 - Eugene 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 $353, our data indicates the cheapest price to be $229. The most popular route (Lambert-St Louis - Portland), is priced around $249.

  • 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, January is the cheapest month in which you can book a flight from St. Louis to Oregon (average of $150). Flying from St. Louis to Oregon in March is currently the most expensive (average of $267). 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$137Average$246FlexibilityNo cancel feeOn-time62%
DeltaCheapest$168Average$410FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$188Average$467FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$226Average$417FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$238Average$471FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$239Average$515FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$338Average$520FlexibilityNo cancel feeOn-time85%

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