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St. Louis

$69+ Cheap flights from Oregon to St. Louis (STL)

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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — STL
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Oregon to St. Louis

Keep the following information in mind while searching for Oregon to St. Louis flight deals. Data was last updated July 3, 2025.

Round-trip from

$261
(FlightHub)

One-way from

$69
(Priceline)

Popular in

December

Cheapest in

January

Average price

$368

Good round-trip deal

$505 or less

Good one-way deal

$243 or less
From Oregon to Lambert-St Louis
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One-way flight from Oregon to Lambert-St Louis
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Highest demand for flights based on searches. 5% potential increase in price ($21 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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Price to beat on a round-trip flight from Oregon to Lambert-St Louis.
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Price to beat on a one-way flight from Oregon to Lambert-St Louis.
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Find flight deals from Oregon to St. Louis

Cheapest flights from Oregon to St. Louis
Explore the most affordable flight options available from Oregon to St. Louis. 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 7/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/146:35 amPDX - STL
1 stop24h 36mFrontier
Wed 8/207:54 pmSTL - PDX
1 stop17h 29mFrontier
Deal found 7/2$261
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.
Tue 9/166:50 amEUG - STL
2 stops13h 25mSouthwest
Sat 9/206:30 amSTL - EUG
1 stop6h 30mSouthwest
Deal found 7/1$272
This CheapOair deal was found by Cheapflights users on 6/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:35 pmPDX - STL
1 stop14h 46mMultiple Airlines
Tue 9/167:55 pmSTL - PDX
1 stop28h 39mMultiple Airlines
Deal found 6/30$272
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/206:35 amBOI - STL
1 stop7h 06mHawaiian Airlines
Sat 9/273:35 pmSTL - BOI
1 stop8h 05mHawaiian Airlines
Deal found 7/2$278
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.
Tue 7/295:05 amBOI - STL
1 stop4h 55mSouthwest
Tue 8/56:15 amSTL - BOI
1 stop6h 55mSouthwest
Deal found 7/1$279
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/173:41 pmRDM - STL
1 stop21h 00mAlaska Airlines
Wed 9/246:00 amSTL - RDM
1 stop8h 37mAlaska Airlines
Deal found 7/3$279
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.
Wed 9/177:30 pmRDM - STL
2 stops11h 07mDelta
Wed 9/247:00 pmSTL - RDM
1 stop6h 45mDelta
Deal found 7/3$284
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/101:30 pmPDX - STL
1 stop6h 10mSouthwest
Thu 9/113:55 pmSTL - PDX
1 stop6h 15mSouthwest
Deal found 7/3$292
This Alaska Airlines deal was found by Cheapflights users on 6/30. 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 9/106:05 amPDX - STL
1 stop6h 36mAlaska Airlines
Mon 9/156:30 pmSTL - PDX
1 stop7h 45mAlaska Airlines
Deal found 6/30$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.
Wed 8/135:05 pmPDX - STL
1 stop5h 33mDelta
Wed 8/2011:23 amSTL - PDX
1 stop6h 30mDelta
Deal found 7/3$297
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 9/166:00 amEUG - STL
1 stop6h 41mAlaska Airlines
Sun 9/216:00 amSTL - EUG
1 stop8h 42mAlaska Airlines
Deal found 7/1$300
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.
Thu 10/92:30 pmPDX - STL
1 stop7h 29mHawaiian Airlines
Mon 10/136:33 amSTL - PDX
1 stop7h 52mHawaiian Airlines
Deal found 7/3$317

Cheapflights Fare Finder

Customize your flight search to find flights from Oregon to St. Louis 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 Oregon to St. Louis that are best for you.

Fly from

Oregon

Fly to

St. Louis

Route

Depart

Return

Price

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 8/14

6:35 am-9:11 am

1 stop24h 36m

Lambert-St Louis

Wed 8/20

7:54 pm-11:23 am

1 stop17h 29m

$261

EugeneSt. Louis

EUG - STL

EUGSTL

Eugene

Tue 9/16

6:50 am-10:15 pm

2 stops13h 25m

Lambert-St Louis

Sat 9/20

6:30 am-11:00 am

1 stop6h 30m

$272

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Thu 9/11

6:35 pm-11:21 am

1 stop14h 46m

Lambert-St Louis

Tue 9/16

7:55 pm-10:34 pm

1 stop28h 39m

$272

BoiseSt. Louis

BOI - STL

BOISTL

Boise Air Term. Gowen Fld

Sat 9/20

6:35 am-2:41 pm

1 stop7h 06m

Lambert-St Louis

Sat 9/27

3:35 pm-10:40 pm

1 stop8h 05m

$278

RedmondSt. Louis

RDM - STL

RDMSTL

Bend/Redmond

Wed 9/17

3:41 pm-2:41 pm

1 stop21h 00m

Lambert-St Louis

Wed 9/24

6:00 am-12:37 pm

1 stop8h 37m

$279

BoiseSt. Louis

BOI - STL

BOISTL

Boise Air Term. Gowen Fld

Tue 7/29

5:05 am-11:00 am

1 stop4h 55m

Lambert-St Louis

Tue 8/5

6:15 am-12:10 pm

1 stop6h 55m

$279

RedmondSt. Louis

RDM - STL

RDMSTL

Bend/Redmond

Wed 9/17

7:30 pm-8:37 am

2 stops11h 07m

Lambert-St Louis

Wed 9/24

7:00 pm-11:45 pm

1 stop6h 45m

$284

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Wed 9/10

1:30 pm-9:40 pm

1 stop6h 10m

Lambert-St Louis

Thu 9/11

3:55 pm-8:10 pm

1 stop6h 15m

$292

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Wed 9/10

6:05 am-2:41 pm

1 stop6h 36m

Lambert-St Louis

Mon 9/15

6:30 pm-12:15 am

1 stop7h 45m

$296

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Wed 8/13

5:05 pm-12:38 am

1 stop5h 33m

Lambert-St Louis

Wed 8/20

11:23 am-3:53 pm

1 stop6h 30m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 54 results
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2
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Best time to book a flight from Oregon to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Oregon 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 Oregon to St. Louis

What is the cheapest month to book a flight from Oregon to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Oregon to St. Louis (average of $311). Flying from Oregon to St. Louis in March is currently the most expensive (average of $356). 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 OR to STL?

Find hourly flight availability from Oregon to St. Louis. 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.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Oregon to St. Louis as you normally would.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated July 3, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Oregon to St. Louis. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

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

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

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
4,270 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

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
7,970 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

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

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

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
8,845 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Overall

8.0

Crew

8.5

Food

7.1

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 Oregon to St. Louis. 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 into for flights to St. Louis from Oregon?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Oregon.

  • What are the cheapest airlines to fly from Oregon to St. Louis 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 Hawaiian Airlines, as they are both options that can get you from Oregon to St. Louis for a low price.

  • What are the most popular routes from Oregon to St. Louis?

    While some choose either Boise Air Term. Gowen Fld - Lambert-St Louis or Medford - Lambert-St Louis, Portland - Lambert-St Louis is the most popular route from Oregon to St. Louis.

  • What are the cheapest flights from Oregon to St. Louis?

    On average you can expect to pay $405 for a flight from Oregon to St. Louis. The cheapest flight overall is $189 while the most popular route, (Portland - Lambert-St Louis) is currently priced at $242.

  • Can I find deals for flights from Oregon to St. Louis that include hotel bookings?

    Yes. In addition to deals on Oregon to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Oregon to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oregon to St. Louis.

  • Can I find deals for business class flights from Oregon to St. Louis?

    Yes. Cheapflights offers flight deals from Oregon to St. Louis 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 Oregon to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Oregon to St. Louis (average of $311). Flying from Oregon to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near Oregon?

Book flights to Oregon if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Festus
Chesterfield
Farmington

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Alternative routes for Oregon to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Oregon to St. Louis

Discover the top 6 airlines that operate flights from Oregon to St. Louis. 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$118Average$225FlexibilityNo cancel feeOn-time62%
DeltaCheapest$192Average$429FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$212Average$429FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$226Average$521FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$244Average$493FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$252Average$447FlexibilityNo cancel feeOn-time63%

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