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Eugene

$139+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EUG
Apr 19 — Apr 261
Sun 4/19
Sun 4/26
1 adult, Economy
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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 March 20, 2026.

This Delta deal was found by Cheapflights users on 3/16. 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.
Tue 4/216:45 pm
STL
-
EUG
1 stop7h 02m
Delta
Tue 4/286:30 am
EUG
-
STL
2 stops8h 56m
Delta
Deal found 3/16$282
This Southwest deal was found by Cheapflights users on 3/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:35 am
STL
-
EUG
1 stop6h 10m
Southwest
Tue 4/2811:20 am
EUG
-
STL
1 stop8h 40m
Southwest
Deal found 3/16$317
This Delta deal was found by Cheapflights users on 3/16. 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.
Tue 4/146:45 pm
STL
-
EUG
1 stop7h 02m
Delta
Fri 4/1711:09 am
EUG
-
STL
2 stops11h 16m
Delta
Deal found 3/16$332
This Southwest deal was found by Cheapflights users on 3/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:20 am
STL
-
EUG
1 stop6h 10m
Southwest
Wed 4/151:40 pm
EUG
-
STL
1 stop6h 05m
Southwest
Deal found 3/16$335
This Delta deal was found by Cheapflights users on 3/16. 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.
Thu 4/96:12 pm
STL
-
EUG
1 stop6h 34m
Delta
Wed 4/1511:09 am
EUG
-
STL
2 stops10h 05m
Delta
Deal found 3/16$340
This Alaska Airlines deal was found by Cheapflights users on 3/17. 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.
Thu 4/94:20 pm
STL
-
EUG
1 stop9h 38m
Alaska Airlines
Wed 4/151:07 pm
EUG
-
STL
1 stop8h 52m
Alaska Airlines
Deal found 3/17$366

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 March 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$282
(Delta)

One-way from

$139
(Delta)

Popular in

March

Cheapest in

December

Average price

$869
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. 23% potential increase in price ($156 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 20, 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

Tue 4/21

6:35 am-10:45 am

1 stop6h 10m

Eugene

Tue 4/28

11:20 am-10:00 pm

1 stop8h 40m

$317

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Tue 4/14

6:45 pm-11:47 pm

1 stop7h 02m

Eugene

Fri 4/17

11:09 am-12:25 am

2 stops11h 16m

$332

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Thu 5/14

2:25 pm-9:50 pm

2 stops9h 25m

Eugene

Tue 6/9

6:40 am-9:10 pm

2 stops12h 30m

$449

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Sun 6/7

5:40 am-12:40 pm

2 stops9h 00m

Eugene

Thu 6/11

2:45 pm-11:55 pm

1 stop7h 10m

$472
Quickest round-trip

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Fri 4/17

6:20 am-10:30 am

1 stop6h 10m

Eugene

Fri 4/24

12:10 pm-10:40 pm

2 stops8h 30m

$472

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Wed 5/27

7:41 pm-9:41 am

1 stop16h 00m

Eugene

Mon 6/1

4:00 pm-4:37 pm

1 stop22h 37m

$497

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Fri 4/24

4:46 pm-8:01 pm

1 stop29h 15m

Eugene

Mon 4/27

8:38 pm-11:59 pm

1 stop25h 21m

$558
Cheapest one-way

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Wed 5/13

7:41 pm-9:41 am

1 stop16h 00m

$144

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Sat 4/18

2:37 pm-9:24 pm

1 stop8h 47m

$159
Quickest one-way

St. LouisEugene

STL - EUG

STLEUG

Lambert-St Louis

Wed 5/13

7:59 pm-11:43 pm

1 stop5h 44m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/15

Showing 1-10 of 14 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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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, October is the cheapest month in which you can book a flight from St. Louis to Eugene (average of $208). Flying from St. Louis to Eugene in June is currently the most expensive (average of $409). 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 March 20, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, andUnited 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
4,324 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,324 reviews
Southwest
8.0
Very good
4,324 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Alaska Airlines
7.9
Good
12,087 reviews
Southwest
8.0
Very good
4,324 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,453 reviews
Southwest
8.0
Very good
4,324 reviews

Overall

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

Crew

8.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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?

    Southwest and Delta can get you from St. Louis to Eugene in just under 6h 10m. Your travel time can differ by up to 52m. 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 Alaska Airlines is currently your cheapest option to Eugene, with prices starting at $312. Additional round-trip tickets that might be worth considering are offered by United Airlines and Southwest, with the lowest prices starting at $332 and $353, respectively. Users have found that Alaska Airlines is 39% cheaper than the other options available to this destination.

  • 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, October is the cheapest month in which you can book a flight from St. Louis to Eugene (average of $208). Flying from St. Louis to Eugene in June is currently the most expensive (average of $409). 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

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Top 3 airlines flying from St. Louis to Eugene

Discover the top 3 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 March 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$312Average$522FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$332Average$535FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$353Average$443FlexibilityNo cancel feeOn-time63%

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