HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Eugene

$175+ Cheap flights from St. Louis to Eugene (STL - EUG)

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EUG
Aug 15 — Aug 221
Sat 8/15
Sat 8/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Eugene 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 Eugene

Cheapest flights from St. Louis to Eugene
Explore the most affordable flight options available from St. Louis to Eugene. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 16, 2026.

This Delta deal was found by Cheapflights users on 7/13. 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 9/238:00 am
STL
-
EUG
1 stop5h 52m
Delta
Mon 9/284:45 pm
EUG
-
STL
1 stop5h 59m
Delta
Deal found 7/13$349
This Delta deal was found by Cheapflights users on 7/13. 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.
Tue 10/207:00 pm
STL
-
EUG
1 stop6h 49m
Delta
Tue 10/275:54 am
EUG
-
STL
2 stops13h 22m
Delta
Deal found 7/13$354
This United Airlines deal was found by Cheapflights users on 7/15. 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.
Thu 9/37:25 am
STL
-
EUG
1 stop7h 45m
United Airlines
Sun 9/612:47 pm
EUG
-
STL
1 stop8h 44m
United Airlines
Deal found 7/15$368
This Delta deal was found by Cheapflights users on 7/16. 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 9/115:00 pm
STL
-
EUG
2 stops8h 59m
Delta
Wed 9/165:51 pm
EUG
-
STL
2 stops13h 38m
Delta
Deal found 7/16$374
This Alaska Airlines deal was found by Cheapflights users on 7/13. 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.
Fri 9/117:36 pm
STL
-
EUG
1 stop6h 17m
Alaska Airlines
Wed 9/167:35 pm
EUG
-
STL
1 stop16h 46m
Alaska Airlines
Deal found 7/13$376
This Alaska Airlines deal was found by Cheapflights users on 7/12. 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 10/274:40 pm
STL
-
EUG
1 stop9h 17m
Alaska Airlines
Sat 10/311:49 pm
EUG
-
STL
1 stop8h 10m
Alaska Airlines
Deal found 7/12$399
This Southwest deal was found by Cheapflights users on 7/15. 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.
Thu 9/35:55 am
STL
-
EUG
1 stop7h 45m
Southwest
Mon 9/711:20 am
EUG
-
STL
2 stops11h 15m
Southwest
Deal found 7/15$413

Find flight deals from St. Louis to Eugene

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Eugene (EUG). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(Delta)

One-way from

$175
(United Airlines)

Popular in

March

Cheapest in

December

Average price

$570
Provider with most accurate pricing for Lambert-St Louis-Eugene flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Eugene flights.
Search Deals
From Lambert-St Louis to Eugene
Search Deals
One-way flight from Lambert-St Louis to Eugene
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($149 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Eugene 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 16, 2026.
Use the filters below to find and compare flights from St. Louis to Eugene that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Wed 9/23

6:08 pm-10:41 pm

1 stop6h 33m

Eugene

Mon 9/28

4:03 pm-5:10 pm

1 stop23h 07m

$349
Quickest round-trip

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Sat 8/8

4:45 pm-9:21 pm

1 stop6h 36m

Eugene

Sat 8/15

2:19 pm-10:59 pm

1 stop6h 40m

$349

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Sat 8/8

7:10 am-1:20 pm

1 stop8h 10m

Eugene

Sat 8/15

1:55 pm-10:00 pm

1 stop6h 05m

$349

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Wed 9/23

1:55 pm-11:47 pm

2 stops11h 52m

Eugene

Mon 9/28

4:45 pm-12:44 am

1 stop5h 59m

$354

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Thu 9/3

7:25 am-1:10 pm

1 stop7h 45m

Eugene

Sun 9/6

12:47 pm-11:31 pm

1 stop8h 44m

$368

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Fri 9/11

7:36 pm-11:53 pm

1 stop6h 17m

Eugene

Wed 9/16

4:03 pm-5:10 pm

1 stop23h 07m

$376
Cheapest one-way
Quickest one-way

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Thu 9/3

8:00 am-1:10 pm

1 stop7h 10m

$175

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Fri 9/4

8:00 am-1:10 pm

1 stop7h 10m

$202

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Thu 9/3

1:45 pm-9:45 pm

2 stops10h 00m

$235

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Fri 9/4

2:20 pm-10:40 pm

2 stops10h 20m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/16

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

Compare providers for flights from St. Louis to Eugene

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Eugene in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Eugene flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Eugene flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Eugene flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Eugene flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Eugene flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Eugene

Have a flexible travel schedule? Discover the best time to fly to Eugene 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 Eugene

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

Currently, December is the cheapest month in which you can book a flight from St. Louis to Eugene (average of $369). Flying from St. Louis to Eugene in March is currently the most expensive (average of $914). 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.

Reviews of airlines servicing Eugene

Get insights into the airlines that provide service to Eugene. 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 Eugene. Reviews last updated July 16, 2026.
Get a feel of what it's like to fly with Southwest and United Airlines from St. Louis to Eugene by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
United Airlines
7.4
Good
9,993 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

Reviews

1 / 20
6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Eugene. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Alaska Airlines, United Airlines, and Southwest can get you from St. Louis to Eugene in just under 6h 33m. Your travel time can differ by up to 1h 37m. The distance from St. Louis to Eugene is about 1728 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from St. Louis to Eugene round-trip?

    Flying on United Airlines is currently your cheapest option to Eugene, with prices starting at $332. Another option worth looking into is Southwest, starting at $348 round trip. Users have found that United Airlines is 37% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from St. Louis to Eugene one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $163. However, be on the lookout for offers from Southwest and Delta, as they are both options that can get you from St. Louis to Eugene for a low price.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from St. Louis to Eugene (average of $369). Flying from St. Louis to Eugene in March is currently the most expensive (average of $914). 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 Eugene?

Book flights to Eugene if you plan to visit one of these locations
Newport
Corvallis

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.

Top 2 airlines flying from St. Louis to Eugene

Discover the top 2 airlines that operate flights from St. Louis to Eugene. 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 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$332Average$519FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$348Average$492FlexibilityNo cancel feeOn-time63%

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.