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$63+ 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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PDX
Dec 9 — Dec 161
Tue 12/9
Tue 12/16
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 November 9, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$174
(Kiwi.com)

One-way from

$63
(Trip.com)

Popular in

March

Cheapest in

September

Average price

$373
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. 3% potential increase in price ($14 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 November 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 November 9, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Wed 12/177:43 pmSTL - PDX
1 stop18h 00mFrontier
Wed 12/243:59 pmPDX - STL
2 stops28h 34mFrontier
Deal found 11/6$174
This Kiwi.com deal was found by Cheapflights users on 11/7. 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.
Wed 12/37:43 pmSTL - PDX
1 stop18h 13mFrontier
Sun 12/712:51 pmPDX - STL
1 stop19h 23mFrontier
Deal found 11/7$182
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Wed 12/177:43 pmSTL - PDX
1 stop18h 00mFrontier
Tue 12/302:29 pmPDX - STL
2 stops17h 33mFrontier
Deal found 11/6$202
This Kiwi.com deal was found by Cheapflights users on 11/7. 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.
Wed 12/37:43 pmSTL - PDX
1 stop18h 13mFrontier
Mon 12/85:32 pmPDX - STL
2 stops38h 42mFrontier
Deal found 11/7$205
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Wed 12/177:43 pmSTL - PDX
1 stop18h 00mFrontier
Thu 12/2512:39 pmPDX - STL
2 stops29h 08mFrontier
Deal found 11/6$211
This Kiwi.com deal was found by Cheapflights users on 11/7. 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 12/510:44 pmSTL - PDX
2 stops39h 12mFrontier
Fri 12/1212:55 pmPDX - STL
1 stop19h 19mFrontier
Deal found 11/7$222
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 12/2010:10 pmSTL - PDX
1 stop17h 14mFrontier
Wed 12/243:59 pmPDX - STL
2 stops28h 34mFrontier
Deal found 11/6$230
This Delta deal was found by Cheapflights users on 11/7. 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 12/52:20 pmSTL - PDX
2 stops10h 20mDelta
Fri 12/127:30 pmPDX - STL
2 stops12h 20mDelta
Deal found 11/7$236
This Southwest deal was found by Cheapflights users on 11/6. 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 12/244:45 pmSTL - PDX
1 stop7h 50mSouthwest
Wed 12/312:05 pmPDX - STL
1 stop7h 05mSouthwest
Deal found 11/6$237
This Delta deal was found by Cheapflights users on 11/8. 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.
Mon 11/246:00 amSTL - PDX
1 stop8h 48mDelta
Tue 12/25:30 amPDX - STL
1 stop6h 00mDelta
Deal found 11/8$243
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 11/213:53 pmSTL - PDX
1 stop18h 11mFrontier
Mon 11/245:15 pmPDX - STL
1 stop25h 54mFrontier
Deal found 11/6$244
This Delta deal was found by Cheapflights users on 11/7. 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 12/46:15 amSTL - MFR
2 stops12h 28mDelta
Sun 12/711:40 amMFR - STL
2 stops11h 08mDelta
Deal found 11/7$256

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 November 9, 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

Wed 12/17

6:00 am-12:54 pm

1 stop8h 54m

Portland

Thu 12/25

5:30 am-1:23 pm

1 stop5h 53m

$243

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Mon 11/24

6:00 am-12:48 pm

1 stop8h 48m

Portland

Tue 12/2

5:30 am-1:30 pm

1 stop6h 00m

$243

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Sat 12/13

5:00 pm-10:58 pm

1 stop7h 58m

Portland

Sat 1/10

1:39 pm-9:35 pm

1 stop5h 56m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Thu 1/8

7:00 am-12:32 pm

1 stop7h 32m

Portland

Sun 1/11

1:39 pm-9:35 pm

1 stop5h 56m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Fri 1/30

3:31 pm-8:32 pm

1 stop7h 01m

Portland

Mon 2/2

12:40 am-10:43 am

1 stop8h 03m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 12/3

6:15 am-12:40 pm

1 stop8h 25m

Portland

Mon 12/15

5:05 pm-12:48 am

1 stop5h 43m

$249

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 12/16

1:35 pm-10:52 pm

2 stops11h 17m

Portland

Fri 1/9

1:24 pm-8:58 pm

1 stop5h 34m

$254

St. LouisMedford

STL - MFR

STLMFR

Lambert-St Louis

Thu 12/4

6:15 am-4:43 pm

2 stops12h 28m

Medford

Sun 12/7

11:40 am-12:48 am

2 stops11h 08m

$256

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Wed 12/3

6:15 am-3:33 pm

2 stops11h 18m

Portland

Mon 12/8

2:23 pm-12:48 am

2 stops8h 25m

$257

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Mon 1/5

6:41 am-2:12 pm

1 stop9h 31m

Portland

Wed 1/14

7:38 am-4:14 pm

1 stop6h 36m

$274

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

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 $265). 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 November 9, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 9% 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.

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 November 9, 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
11,254 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

8.0

Crew

8.5

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
11,254 reviews
Alaska Airlines
8.0
Very good
11,254 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

8.0

Crew

8.5

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
4,240 reviews
Alaska Airlines
8.0
Very good
11,254 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

8.0

Crew

8.5

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
8,002 reviews
Alaska Airlines
8.0
Very good
11,254 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

8.0

Crew

8.5

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
9,012 reviews
Alaska Airlines
8.0
Very good
11,254 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

8.0

Crew

8.5

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
11,050 reviews
Alaska Airlines
8.0
Very good
11,254 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

8.0

Crew

8.5

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 Delta, Frontier, and American Airlines fly from St. Louis to Oregon in about 7h 06m. The time it takes to get you to your destination can typically vary by up to 10h 04m. Airlines will cover a distance of 1728 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 $85. However, be on the lookout for offers from Southwest and United 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 - Eugene or Lambert-St Louis - Medford, 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 $265). 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.

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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 November 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$245FlexibilityNo cancel feeOn-time62%
DeltaCheapest$168Average$469FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$188Average$495FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$226Average$418FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$235Average$517FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$248Average$514FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$338Average$520FlexibilityNo cancel feeOn-time85%

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