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$69+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PDX
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$232
(FlightHub)

One-way from

$69
(Priceline)

Popular in

March

Cheapest in

September

Average price

$388
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. 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 ($10 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This FlightHub deal was found by Cheapflights users on 7/1. 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.
Mon 8/117:29 pmSTL - PDX
1 stop18h 01mFrontier
Mon 8/186:35 amPDX - STL
1 stop24h 36mFrontier
Deal found 7/1$232
This Delta deal was found by Cheapflights users on 7/1. 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 9/76:45 pmSTL - EUG
1 stop6h 01mDelta
Wed 10/296:15 amEUG - STL
2 stops9h 42mDelta
Deal found 7/1$266
This Travelocity deal was found by Cheapflights users on 7/2. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:52 pmSTL - PDX
1 stop6h 24mMultiple Airlines
Sun 11/161:30 pmPDX - STL
1 stop8h 28mMultiple Airlines
Deal found 7/2$276
This Hawaiian Airlines deal was found by Cheapflights users on 7/3. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/133:35 pmSTL - BOI
1 stop9h 33mHawaiian Airlines
Sat 9/206:35 amBOI - STL
1 stop7h 06mHawaiian Airlines
Deal found 7/3$278
This Southwest deal was found by Cheapflights users on 7/2. 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.
Wed 7/306:25 pmSTL - BOI
1 stop7h 00mSouthwest
Wed 8/66:00 amBOI - STL
1 stop8h 00mSouthwest
Deal found 7/2$279
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/97:53 amSTL - BOI
1 stop6h 27mAmerican Airlines
Sat 8/165:15 pmBOI - STL
1 stop6h 01mAmerican Airlines
Deal found 7/1$283
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Tue 8/125:15 amSTL - BOI
1 stop5h 31mUnited Airlines
Tue 8/192:13 pmBOI - STL
2 stops8h 40mUnited Airlines
Deal found 7/2$284
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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.
Tue 9/26:00 amSTL - PDX
1 stop6h 57mAlaska Airlines
Wed 9/106:05 amPDX - STL
1 stop6h 36mAlaska Airlines
Deal found 7/1$296
This Delta deal was found by Cheapflights users on 7/3. 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 8/246:00 amSTL - PDX
1 stop6h 40mDelta
Sat 8/3012:46 amPDX - STL
1 stop7h 51mDelta
Deal found 7/3$297
This Southwest deal was found by Cheapflights users on 7/1. 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.
Fri 9/123:55 pmSTL - PDX
1 stop6h 15mSouthwest
Fri 9/199:25 amPDX - STL
2 stops9h 15mSouthwest
Deal found 7/1$298
This Hawaiian Airlines deal was found by Cheapflights users on 7/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/76:00 amSTL - EUG
1 stop8h 42mHawaiian Airlines
Wed 10/296:00 amEUG - STL
1 stop7h 05mHawaiian Airlines
Deal found 7/1$299
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/296:00 amSTL - PDX
1 stop10h 25mAmerican Airlines
Tue 8/511:59 pmPDX - STL
1 stop7h 01mAmerican Airlines
Deal found 7/1$304

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 July 3, 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

Mon 8/11

7:29 pm-11:30 am

1 stop18h 01m

Portland

Mon 8/18

6:35 am-9:11 am

1 stop24h 36m

$232

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Sun 9/7

6:45 pm-10:46 pm

1 stop6h 01m

Eugene

Wed 10/29

6:15 am-5:57 pm

2 stops9h 42m

$266

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Thu 11/13

7:52 pm-12:16 am

1 stop6h 24m

Portland

Sun 11/16

1:30 pm-11:58 pm

1 stop8h 28m

$276

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sat 9/13

3:35 pm-12:08 am

1 stop9h 33m

Boise Air Term. Gowen Fld

Sat 9/20

6:35 am-2:41 pm

1 stop7h 06m

$278

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Wed 7/30

6:25 pm-12:25 am

1 stop7h 00m

Boise Air Term. Gowen Fld

Wed 8/6

6:00 am-3:00 pm

1 stop8h 00m

$279

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Sat 8/9

7:53 am-1:20 pm

1 stop6h 27m

Boise Air Term. Gowen Fld

Sat 8/16

5:15 pm-12:16 am

1 stop6h 01m

$283

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

Tue 8/12

5:15 am-9:46 am

1 stop5h 31m

Boise Air Term. Gowen Fld

Tue 8/19

2:13 pm-11:53 pm

2 stops8h 40m

$284

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 9/2

6:00 am-10:57 am

1 stop6h 57m

Portland

Wed 9/10

6:05 am-2:41 pm

1 stop6h 36m

$296

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Sun 8/24

6:00 am-10:40 am

1 stop6h 40m

Portland

Sat 8/30

12:46 am-10:37 am

1 stop7h 51m

$297

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Fri 9/12

3:55 pm-8:10 pm

1 stop6h 15m

Portland

Fri 9/19

9:25 am-8:40 pm

2 stops9h 15m

$298

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 56 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 July 3, 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 July 3, 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

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • 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 $69. However, be on the lookout for offers from Spirit 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 - Boise Air Term. Gowen Fld or Lambert-St Louis - Eugene, 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, 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 6 airlines flying from St. Louis to Oregon

Discover the top 6 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$108Average$187FlexibilityNo cancel feeOn-time62%
DeltaCheapest$168Average$422FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$174Average$475FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$215Average$478FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$226Average$438FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$227Average$508FlexibilityNo cancel feeOn-time69%

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