Oregon

$80+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PDX
ene. 3 — ene. 101
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Oregon with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 diciembre 4, 2025.

This Delta deal was found by Cheapflights users on 12/3. 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.
mar. 12/162:20 pmSTL - PDX
1 stop5h 54mDelta
mié. 12/175:30 amPDX - STL
1 stop6h 00mDelta
Deal found 12/3$251
This Mytrip deal was found by Cheapflights users on 12/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/247:43 pmSTL - BOI
1 stop17h 00mFrontier
dom. 12/2812:38 pmBOI - STL
1 stop20h 24mFrontier
Deal found 12/4$293
This Delta deal was found by Cheapflights users on 12/4. 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.
mié. 12/176:15 amSTL - PDX
1 stop8h 25mDelta
mié. 12/1712:32 amPDX - STL
1 stop6h 38mDelta
Deal found 12/4$334
This American Airlines deal was found by Cheapflights users on 12/4. 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.
mié. 12/315:16 amSTL - PDX
1 stop7h 44mAmerican Airlines
mié. 1/72:50 pmPDX - STL
1 stop7h 09mAmerican Airlines
Deal found 12/4$386
This United Airlines deal was found by Cheapflights users on 12/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/312:45 pmSTL - PDX
1 stop8h 22mUnited Airlines
mié. 1/712:59 pmPDX - STL
1 stop7h 01mUnited Airlines
Deal found 12/3$448
This deal was found by Cheapflights users on 12/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/141:35 pmSTL - PDX
1 stop6h 31mUnited Airlines
sáb. 1/105:00 amPDX - STL
1 stop6h 16mUnited Airlines
Deal found 12/3$456
This United Airlines deal was found by Cheapflights users on 12/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/196:00 amSTL - PDX
1 stop9h 20mUnited Airlines
dom. 12/212:45 pmPDX - STL
1 stop5h 37mUnited Airlines
Deal found 12/3$462
This United Airlines deal was found by Cheapflights users on 12/4. 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.
lun. 12/222:45 pmSTL - PDX
1 stop8h 22mUnited Airlines
vie. 12/267:10 amPDX - STL
1 stop8h 44mUnited Airlines
Deal found 12/4$485
This Delta deal was found by Cheapflights users on 12/3. 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.
vie. 12/122:38 pmSTL - PDX
1 stop9h 32mDelta
dom. 12/145:05 pmPDX - STL
1 stop5h 43mDelta
Deal found 12/3$503
This Southwest deal was found by Cheapflights users on 12/1. 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.
dom. 12/215:05 amSTL - EUG
1 stop7h 45mSouthwest
dom. 1/412:55 pmEUG - STL
1 stop9h 50mSouthwest
Deal found 12/1$520
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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.
mié. 12/247:00 amSTL - RDM
1 stop12h 04mAlaska Airlines
dom. 12/285:54 amRDM - STL
1 stop16h 05mAlaska Airlines
Deal found 12/3$535
This Delta deal was found by Cheapflights users on 12/4. 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.
vie. 12/198:05 pmSTL - BOI
1 stop5h 39mDelta
mar. 12/2311:47 pmBOI - STL
1 stop8h 11mDelta
Deal found 12/4$547

Find 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 diciembre 4, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$151
(Southwest)

One-way from

$80
(American Airlines)

Popular in

March

Cheapest in

September

Average price

$382

Good round-trip deal

$337 or less
Provider with most accurate pricing for Lambert-St Louis-Portland flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Portland flights.
From Lambert-St Louis to Oregon
One-way flight from Lambert-St Louis to Oregon
Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Average for round-trip flights in December 2025
Price to beat on a round-trip flight from Lambert-St Louis to Oregon.

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 diciembre 4, 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

lun. 1/19

6:00 am-11:45 am

1 stop7h 45m

Portland

jue. 1/22

6:00 am-4:14 pm

1 stop8h 14m

$181

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

mar. 1/6

5:00 pm-10:39 pm

1 stop7h 39m

Eugene

mié. 1/28

12:34 pm-9:38 pm

1 stop7h 04m

$191

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

mar. 1/20

6:40 am-11:54 am

1 stop7h 14m

Eugene

mié. 1/21

5:30 am-1:48 pm

1 stop6h 18m

$191

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

mar. 1/27

2:20 pm-10:05 pm

2 stops9h 45m

Portland

sáb. 1/31

9:55 am-8:40 pm

1 stop8h 45m

$196

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

mié. 1/7

7:00 am-11:54 am

1 stop6h 54m

Eugene

lun. 1/26

5:20 pm-1:48 pm

2 stops18h 28m

$213

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

vie. 1/9

6:35 am-11:12 pm

2 stops18h 37m

Eugene

mié. 1/21

12:34 pm-9:38 pm

1 stop7h 04m

$216

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

mar. 1/20

2:50 pm-9:30 pm

1 stop8h 40m

Eugene

mié. 1/21

5:42 am-1:54 pm

1 stop6h 12m

$218

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

mié. 1/7

5:00 pm-10:39 pm

1 stop7h 39m

Eugene

sáb. 1/10

12:37 pm-9:35 pm

1 stop6h 58m

$219

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

sáb. 1/10

5:00 pm-10:48 am

2 stops19h 48m

Eugene

mié. 1/21

12:34 pm-11:25 pm

2 stops8h 51m

$221

St. LouisBoise

STL - BOI

STLBOI

Lambert-St Louis

jue. 1/8

3:40 pm-8:55 pm

1 stop6h 15m

Boise Air Term. Gowen Fld

lun. 1/12

3:01 pm-11:25 pm

1 stop7h 24m

$223

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 60 results
1
2
3
...
6

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 diciembre 4, 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.

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 diciembre 4, 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.

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.

Crew

8.5

Food

7.1

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.

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?

  • How long is the flight from St. Louis to Oregon?

    Airlines like American Airlines, Delta, and Southwest fly from St. Louis to Oregon in about 7h 39m. The time it takes to get you to your destination can typically vary by up to 2h 06m. 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 $75. However, be on the lookout for offers from American 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?

  • 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 $454, our data indicates the cheapest price to be $229. The most popular route (Lambert-St Louis - Portland), is priced around $171.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Oregon

See prices for flight routes from nearby airports that may be better suited for you.

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 diciembre 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$137Average$246FlexibilityNo cancel feeOn-time62%
DeltaCheapest$168Average$411FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$188Average$494FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$226Average$419FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$231Average$518FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$248Average$472FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$338Average$520FlexibilityNo cancel feeOn-time85%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.