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$61+ 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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PDX
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
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 October 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$132
(Kiwi.com)

One-way from

$61
(Trip.com)

Popular in

March

Cheapest in

September

Average price

$362
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. 5% potential increase in price ($20 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 October 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 October 20, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:43 pmSTL - BOI
1 stop17h 06mFrontier
Fri 12/1212:44 pmBOI - STL
1 stop20h 30mFrontier
Deal found 10/20$132
This Delta deal was found by Cheapflights users on 10/20. 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.
Fri 12/56:00 amSTL - PDX
1 stop8h 54mDelta
Fri 12/125:05 pmPDX - STL
1 stop5h 43mDelta
Deal found 10/20$229
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/277:52 pmSTL - PDX
1 stop18h 04mFrontier
Fri 11/73:26 pmPDX - STL
1 stop15h 41mFrontier
Deal found 10/20$230
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/308:40 pmSTL - PDX
1 stop17h 16mFrontier
Tue 11/41:26 pmPDX - STL
1 stop17h 41mFrontier
Deal found 10/20$233
This Delta deal was found by Cheapflights users on 10/19. 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 12/36:15 amSTL - PDX
2 stops11h 18mDelta
Mon 12/157:30 pmPDX - STL
2 stops11h 40mDelta
Deal found 10/19$236
This Delta deal was found by Cheapflights users on 10/20. 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 12/243:43 pmSTL - PDX
1 stop6h 51mDelta
Wed 12/315:30 amPDX - STL
1 stop5h 53mDelta
Deal found 10/20$238
This Kiwi.com deal was found by Cheapflights users on 10/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/107:45 pmSTL - PDX
1 stop18h 11mFrontier
Thu 11/131:21 pmPDX - STL
2 stops20h 03mFrontier
Deal found 10/20$241
This Alaska Airlines deal was found by Cheapflights users on 10/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/107:00 amSTL - PDX
1 stop7h 38mAlaska Airlines
Mon 11/103:30 pmPDX - STL
1 stop6h 29mAlaska Airlines
Deal found 10/18$243
This Delta deal was found by Cheapflights users on 10/20. 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 11/262:36 pmSTL - PDX
1 stop9h 29mDelta
Thu 12/410:05 amPDX - STL
1 stop7h 05mDelta
Deal found 10/20$244
This Kiwi.com deal was found by Cheapflights users on 10/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/712:09 pmSTL - PDX
1 stop7h 41mFrontier
Sun 11/912:51 pmPDX - STL
2 stops18h 16mFrontier
Deal found 10/18$245
This Alaska Airlines deal was found by Cheapflights users on 10/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/107:00 amSTL - PDX
1 stop7h 38mAlaska Airlines
Thu 11/132:30 pmPDX - STL
1 stop7h 29mAlaska Airlines
Deal found 10/18$248
This Southwest deal was found by Cheapflights users on 10/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/96:35 pmSTL - PDX
1 stop6h 35mSouthwest
Wed 11/125:00 amPDX - STL
1 stop7h 15mSouthwest
Deal found 10/18$249

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 October 20, 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 12/6

7:43 pm-11:49 am

1 stop17h 06m

Boise Air Term. Gowen Fld

Fri 12/12

12:44 pm-10:33 pm

2 stops32h 49m

$200

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Sun 12/7

6:15 am-12:40 pm

1 stop8h 25m

Portland

Sun 12/14

5:05 pm-12:48 am

1 stop5h 43m

$229

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Mon 11/10

2:36 pm-12:14 am

2 stops11h 38m

Portland

Mon 11/17

7:59 pm-8:55 am

2 stops10h 56m

$236

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Thu 11/13

2:36 pm-12:14 am

2 stops11h 38m

Portland

Mon 11/17

2:23 pm-12:46 am

2 stops8h 23m

$236

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Mon 11/10

7:47 pm-8:31 am

2 stops14h 44m

Portland

Sat 11/15

5:26 pm-8:55 am

2 stops13h 29m

$236

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Mon 11/10

7:00 am-12:38 pm

1 stop7h 38m

Portland

Mon 11/17

3:30 pm-11:59 pm

1 stop6h 29m

$248

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Mon 3/2

7:00 am-12:36 pm

1 stop7h 36m

Portland

Tue 3/3

6:00 am-1:52 pm

1 stop5h 52m

$248

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Mon 11/10

7:00 am-1:50 pm

1 stop8h 50m

Portland

Fri 11/14

3:30 pm-11:59 pm

1 stop6h 29m

$248

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 2/3

2:50 pm-8:47 pm

1 stop7h 57m

Portland

Sat 2/7

7:10 am-1:54 pm

1 stop28h 44m

$248

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Sat 12/13

5:00 pm-10:10 pm

1 stop7h 10m

Portland

Sat 1/10

6:15 am-2:20 pm

1 stop6h 05m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

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 $266). 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 October 20, 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 October 20, 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
11,136 reviews

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,136 reviews
Alaska Airlines
8.0
Very good
11,136 reviews

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Southwest
8.0
Very good
4,239 reviews
Alaska Airlines
8.0
Very good
11,136 reviews

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
7,978 reviews
Alaska Airlines
8.0
Very good
11,136 reviews

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
8,991 reviews
Alaska Airlines
8.0
Very good
11,136 reviews

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
American Airlines
7.2
Good
11,024 reviews
Alaska Airlines
8.0
Very good
11,136 reviews

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

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 7h 38m. The time it takes to get you to your destination can typically vary by up to 9h 28m. 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 Southwest, with whom users have recently found tickets for as low as $85. However, be on the lookout for offers from Alaska Airlines and Delta, 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.

  • 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 $266). 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 October 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$244FlexibilityNo cancel feeOn-time62%
DeltaCheapest$168Average$414FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$208Average$489FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$226Average$418FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$234Average$509FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$248Average$513FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$338Average$520FlexibilityNo cancel feeOn-time85%

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