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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EUG
Jul 28 — Aug 41
Tue 7/28
Tue 8/4
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 June 28, 2026.

This Delta deal was found by Cheapflights users on 6/26. 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 10/207:55 pm
STL
-
EUG
1 stop5h 58m
Delta
Tue 10/274:40 pm
EUG
-
STL
1 stop5h 56m
Delta
Deal found 6/26$349
This Southwest deal was found by Cheapflights users on 6/25. 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 11/116:30 am
STL
-
EUG
2 stops8h 25m
Southwest
Sat 11/141:20 pm
EUG
-
STL
1 stop5h 05m
Southwest
Deal found 6/25$350
This Delta deal was found by Cheapflights users on 6/27. 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 8/57:45 pm
STL
-
EUG
1 stop6h 01m
Delta
Mon 8/104:43 pm
EUG
-
STL
1 stop5h 58m
Delta
Deal found 6/27$373
This Alaska Airlines deal was found by Cheapflights users on 6/27. 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 10/207:00 am
STL
-
EUG
1 stop8h 12m
Alaska Airlines
Wed 10/213:01 pm
EUG
-
STL
1 stop6h 58m
Alaska Airlines
Deal found 6/27$393
This Delta deal was found by Cheapflights users on 6/24. 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 8/67:45 pm
STL
-
EUG
1 stop6h 01m
Delta
Mon 8/104:43 pm
EUG
-
STL
1 stop5h 58m
Delta
Deal found 6/24$397
This Southwest deal was found by Cheapflights users on 6/23. 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.
Mon 8/173:45 pm
STL
-
EUG
2 stops8h 55m
Southwest
Thu 8/2712:20 pm
EUG
-
STL
1 stop5h 25m
Southwest
Deal found 6/23$402

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 June 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(Delta)

One-way from

$189
(Southwest)

Popular in

March

Cheapest in

December

Average price

$696
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 ($146 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 28, 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
Quickest round-trip

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Tue 10/20

7:55 am-11:53 am

1 stop5h 58m

Eugene

Tue 10/27

4:44 pm-12:34 am

1 stop5h 50m

$349

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Wed 8/5

7:45 pm-11:46 pm

1 stop6h 01m

Eugene

Mon 8/10

4:43 pm-12:41 am

1 stop5h 58m

$373
Cheapest one-way

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Tue 10/20

7:30 am-12:19 pm

1 stop6h 49m

$175

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Tue 10/20

6:45 am-1:05 pm

2 stops8h 20m

$180

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Wed 9/2

7:00 am-12:55 pm

2 stops7h 55m

$194

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Wed 10/21

7:00 am-1:12 pm

1 stop8h 12m

$199

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Mon 10/5

5:00 pm-10:45 pm

1 stop7h 45m

$199

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Fri 10/23

7:55 pm-11:53 pm

1 stop5h 58m

$244

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Thu 10/22

7:55 pm-11:53 pm

1 stop5h 58m

$244
Quickest one-way

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Tue 7/7

8:00 am-11:48 am

1 stop5h 48m

$279

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/26

Showing 1-10 of 13 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 June.
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 June 28, 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
7.9
Good
4,246 reviews

Food

7.0

Boarding

8.1

Overall

7.9

Entertainment

7.5

Comfort

8.0

Crew

8.6

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
7.9
Good
4,246 reviews
Southwest
7.9
Good
4,246 reviews

Food

7.0

Boarding

8.1

Overall

7.9

Entertainment

7.5

Comfort

8.0

Crew

8.6

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
9,896 reviews
Southwest
7.9
Good
4,246 reviews

Food

7.0

Boarding

8.1

Overall

7.9

Entertainment

7.5

Comfort

8.0

Crew

8.6

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?

    Delta can get you from St. Louis to Eugene in just under 5h 58m. Your travel time can differ by up to . The distance from St. Louis to Eugene is about 1728 mi.

  • 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 $371 round trip. Users have found that United Airlines is 38% 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 June 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$332Average$538FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$371Average$495FlexibilityNo 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.