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$84+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PDX
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
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 January 21, 2026.

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.
Wed 4/156:45 pm
STL
-
BOI
1 stop6h 12m
Delta
Wed 4/2211:36 pm
BOI
-
STL
1 stop7h 54m
Delta
Deal found 1/19$237
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.
Thu 4/305:59 pm
STL
-
PDX
1 stop6h 55m
United Airlines
Mon 5/411:59 pm
PDX
-
STL
1 stop7h 31m
United Airlines
Deal found 1/21$245
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.
Sat 9/126:20 pm
STL
-
PDX
Nonstop4h 10m
Alaska Airlines
Sat 9/1911:25 am
PDX
-
STL
Nonstop3h 48m
Alaska Airlines
Deal found 1/20$249
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.
Wed 5/136:20 pm
STL
-
PDX
Nonstop4h 17m
Alaska Airlines
Mon 5/1812:00 pm
PDX
-
STL
1 stop9h 57m
Alaska Airlines
Deal found 1/19$259
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/126:20 pm
STL
-
PDX
Nonstop4h 10m
Alaska Airlines
Tue 6/1611:25 am
PDX
-
STL
Nonstop3h 48m
Alaska Airlines
Deal found 1/21$269
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/19:32 pm
STL
-
PDX
1 stop15h 46m
Frontier
Mon 2/99:22 pm
PDX
-
STL
2 stops47h 05m
Frontier
Deal found 1/21$272
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/166:00 pm
STL
-
PDX
1 stop7h 14m
United Airlines
Mon 2/2312:57 pm
PDX
-
STL
1 stop7h 17m
United Airlines
Deal found 1/19$273
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.
Wed 4/291:40 pm
STL
-
PDX
2 stops12h 15m
Delta
Sun 5/37:32 pm
PDX
-
STL
2 stops10h 58m
Delta
Deal found 1/21$274
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:20 pm
STL
-
PDX
Nonstop4h 17m
Alaska Airlines
Tue 5/1912:00 pm
PDX
-
STL
1 stop9h 57m
Alaska Airlines
Deal found 1/21$279
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 4/306:45 pm
STL
-
PDX
1 stop7h 08m
Delta
Mon 5/47:32 pm
PDX
-
STL
2 stops12h 10m
Delta
Deal found 1/21$281
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 3/1912:28 pm
STL
-
PDX
1 stop7h 11m
Delta
Thu 3/2612:30 am
PDX
-
STL
1 stop6h 31m
Delta
Deal found 1/21$284
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:56 pm
STL
-
PDX
1 stop14h 01m
Alaska Airlines
Sat 5/2311:18 am
PDX
-
STL
Nonstop3h 48m
Alaska Airlines
Deal found 1/20$286

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 January 21, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$237
(Delta)

One-way from

$84
(Kiwi.com)

Popular in

March

Cheapest in

February

Average price

$335

Good round-trip deal

$299 or less

Good one-way deal

$163 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. 0% potential increase in price ($2 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 January 2026
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Oregon.
Search Deals
Price to beat on a one-way 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 January 21, 2026.
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

Wed 4/15

6:45 pm-11:57 pm

1 stop6h 12m

Boise Air Term. Gowen Fld

Wed 4/22

11:36 pm-8:30 am

1 stop7h 54m

$237

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Sat 2/14

4:13 pm-9:59 pm

1 stop7h 46m

Portland

Tue 2/17

6:40 am-5:13 pm

1 stop8h 33m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Fri 2/20

6:00 pm-11:14 pm

1 stop7h 14m

Portland

Fri 2/27

10:38 pm-10:58 am

1 stop10h 20m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Sat 2/28

4:30 pm-9:15 pm

1 stop6h 45m

Portland

Tue 3/3

12:57 pm-10:14 pm

1 stop7h 17m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Fri 3/20

3:05 pm-8:25 pm

1 stop7h 20m

Portland

Tue 3/24

5:02 pm-12:21 am

1 stop5h 19m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 3/4

2:31 pm-8:44 pm

1 stop8h 13m

Portland

Sat 3/7

11:35 pm-9:03 am

1 stop7h 28m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Sun 2/15

6:00 pm-11:14 pm

1 stop7h 14m

Portland

Mon 2/23

12:57 pm-10:14 pm

1 stop7h 17m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 4/14

4:46 pm-10:32 pm

1 stop7h 46m

Portland

Tue 4/21

11:59 pm-11:19 am

1 stop9h 20m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Fri 4/17

6:45 pm-11:53 pm

1 stop7h 08m

Portland

Sun 4/19

12:30 am-8:30 am

1 stop6h 00m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 2/18

2:45 pm-9:15 pm

1 stop8h 30m

Portland

Sat 2/28

5:05 am-1:14 pm

1 stop6h 09m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

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 $249). 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 January 21, 2026.

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.

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 January 21, 2026.
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
11,775 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,775 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,089 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,191 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
American Airlines
7.2
Good
11,174 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 American Airlines, United Airlines, and Delta fly from St. Louis to Oregon in about 7h 14m. The time it takes to get you to your destination can typically vary by up to 32m. 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 $76. However, be on the lookout for offers from Alaska Airlines and Southwest, 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 $294, our data indicates the cheapest price to be $134. The most popular route (Lambert-St Louis - Portland), is priced around $245.

  • 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 $249). 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 January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$132Average$245FlexibilityNo cancel feeOn-time62%
DeltaCheapest$158Average$384FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$188Average$465FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$226Average$416FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$238Average$516FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$248Average$479FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$338Average$520FlexibilityNo cancel feeOn-time85%

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