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$74+ 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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PDX
ago. 25 — sep. 11
lun. 8/25
lun. 9/1
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 agosto 20, 2025.

Round-trip from

$152
(Priceline)

One-way from

$74
(Priceline)

Popular in

March

Cheapest in

November

Average price

$347

Good round-trip deal

$508 or less
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 ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in August 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 agosto 20, 2025.

This Priceline deal was found by Cheapflights users on 8/18. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/57:55 pmSTL - PDX
1 stop6h 17mFrontier
lun. 9/811:23 amPDX - STL
1 stop7h 21mFrontier
Deal found 8/18$152
This FlightHub deal was found by Cheapflights users on 8/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/87:55 pmSTL - PDX
1 stop6h 17mFrontier
vie. 9/126:05 amPDX - STL
1 stop25h 01mFrontier
Deal found 8/19$168
This FlightHub deal was found by Cheapflights users on 8/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/67:55 pmSTL - BOI
1 stop16h 42mFrontier
jue. 9/1112:22 pmBOI - STL
1 stop19h 44mFrontier
Deal found 8/19$171
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/167:55 pmSTL - PDX
1 stop28h 39mFrontier
jue. 9/186:05 amPDX - STL
1 stop25h 01mFrontier
Deal found 8/18$174
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/167:52 pmSTL - PDX
1 stop17h 56mFrontier
dom. 10/1911:36 amPDX - STL
1 stop22h 07mFrontier
Deal found 8/18$193
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/187:55 pmSTL - BOI
1 stop16h 42mFrontier
dom. 9/2112:22 pmBOI - STL
1 stop19h 44mFrontier
Deal found 8/18$201
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/167:55 pmSTL - PDX
1 stop28h 39mFrontier
mar. 9/237:15 amPDX - STL
1 stop23h 51mFrontier
Deal found 8/19$204
This Kiwi.com deal was found by Cheapflights users on 8/20. 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.
mar. 10/147:52 pmSTL - PDX
1 stop17h 56mFrontier
lun. 10/2012:43 pmPDX - STL
1 stop18h 24mFrontier
Deal found 8/20$208
This FlightHub deal was found by Cheapflights users on 8/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/117:52 pmSTL - PDX
1 stop17h 56mFrontier
mié. 10/1512:43 pmPDX - STL
1 stop18h 24mFrontier
Deal found 8/19$214
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/77:52 pmSTL - PDX
1 stop17h 56mFrontier
vie. 10/1012:44 pmPDX - STL
1 stop18h 23mFrontier
Deal found 8/18$219
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/277:54 pmSTL - PDX
1 stop17h 29mFrontier
mié. 9/36:51 amPDX - STL
1 stop24h 15mFrontier
Deal found 8/18$220
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/47:45 pmSTL - PDX
2 stops17h 04mMultiple Airlines
mar. 11/1112:52 pmPDX - STL
1 stop18h 15mMultiple Airlines
Deal found 8/19$222

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 agosto 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. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

vie. 9/5

7:55 pm-12:12 am

1 stop6h 17m

Portland

lun. 9/8

11:23 am-8:44 pm

1 stop7h 21m

$152

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

lun. 9/8

7:55 pm-12:12 am

1 stop6h 17m

Portland

vie. 9/12

6:05 am-9:06 am

1 stop25h 01m

$168

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

mié. 10/22

7:52 pm-11:38 am

1 stop17h 46m

Portland

dom. 10/26

11:36 am-11:43 am

1 stop22h 07m

$168

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

vie. 9/19

7:55 pm-12:12 am

1 stop6h 17m

Portland

vie. 9/26

6:05 am-9:06 am

1 stop25h 01m

$168

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

lun. 9/29

7:55 pm-12:12 am

1 stop6h 17m

Portland

lun. 10/6

6:05 am-9:07 am

1 stop25h 02m

$168

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

jue. 10/23

7:52 pm-11:48 am

1 stop17h 56m

Portland

dom. 10/26

11:36 am-11:43 am

1 stop22h 07m

$168

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

lun. 9/15

7:55 pm-12:12 am

1 stop6h 17m

Portland

lun. 9/22

6:05 am-9:06 am

1 stop25h 01m

$168

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

dom. 9/28

7:55 pm-12:12 am

1 stop6h 17m

Portland

sáb. 10/4

7:15 am-9:06 am

1 stop23h 51m

$168

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

jue. 9/11

7:55 pm-12:12 am

1 stop6h 17m

Portland

dom. 9/14

6:05 am-9:06 am

1 stop25h 01m

$168

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

vie. 10/24

7:52 pm-11:48 am

1 stop17h 56m

Portland

dom. 10/26

11:36 am-11:43 am

1 stop22h 07m

$168

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

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, 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 $368). 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 agosto 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.

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 agosto 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
10,000 reviews

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
United Airlines
7.4
Good
8,928 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

PDX - SJC

They had no snacks and had to pay for the Wifi.

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 Hawaiian Airlines fly from St. Louis to Oregon in about 6h 17m. The time it takes to get you to your destination can typically vary by up to 3h 43m. 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 $74. However, be on the lookout for offers from Delta and Hawaiian 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 - Boise Air Term. Gowen Fld or Lambert-St Louis - Eugene, 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 $520, our data indicates the cheapest price to be $352. The most popular route (Lambert-St Louis - Portland), is priced around $191.

  • 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 $368). 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 agosto 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$191FlexibilityNo cancel feeOn-time62%
DeltaCheapest$168Average$416FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$212Average$500FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$226Average$417FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$246Average$475FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$251Average$508FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$338Average$520FlexibilityNo cancel feeOn-time85%

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