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$157+ Cheap flights from Eugene to St. Louis (EUG - STL)

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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
EUG — STL
août 19 — août 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheap flight deals from Eugene to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Eugene (EUG) to St. Louis (STL). 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 août 14, 2025.

Round-trip from

$313
(Alaska Airlines)

One-way from

$157
(Delta)

Popular in

June

Cheapest in

January

Average price

$438
From Eugene to Lambert-St Louis
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One-way flight from Eugene to Lambert-St Louis
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Highest demand for flights based on searches. 6% potential increase in price ($33 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 August 2025
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Find flight deals from Eugene to St. Louis

Cheapest flights from Eugene to St. Louis
Explore the most affordable flight options available from Eugene to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on août 14, 2025.

This Alaska Airlines deal was found by Cheapflights users on 8/13. 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.
ven. 9/512:50 pmEUG - STL
2 stops9h 09mAlaska Airlines
mar. 9/96:00 amSTL - EUG
1 stop8h 42mAlaska Airlines
Deal found 8/13$313
This Delta deal was found by Cheapflights users on 8/13. 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.
ven. 9/512:40 pmEUG - STL
1 stop6h 36mDelta
mar. 9/96:45 pmSTL - EUG
1 stop6h 01mDelta
Deal found 8/13$318
This Delta deal was found by Cheapflights users on 8/13. 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.
ven. 11/711:30 amEUG - STL
2 stops10h 54mDelta
mar. 11/116:59 pmSTL - EUG
1 stop6h 50mDelta
Deal found 8/13$323
This Hawaiian Airlines deal was found by Cheapflights users on 8/12. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 9/181:36 pmEUG - STL
1 stop8h 23mHawaiian Airlines
lun. 9/296:30 pmSTL - EUG
1 stop7h 55mHawaiian Airlines
Deal found 8/12$324
This Alaska Airlines deal was found by Cheapflights users on 8/11. 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.
mer. 10/81:47 pmEUG - STL
1 stop8h 16mAlaska Airlines
dim. 10/126:33 amSTL - EUG
2 stops10h 46mAlaska Airlines
Deal found 8/11$334
This Alaska Airlines deal was found by Cheapflights users on 8/13. 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.
jeu. 9/111:36 pmEUG - STL
1 stop8h 23mAlaska Airlines
mer. 9/243:35 pmSTL - EUG
1 stop9h 13mAlaska Airlines
Deal found 8/13$338
This Southwest deal was found by Cheapflights users on 8/11. 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.
mer. 10/83:00 pmEUG - STL
1 stop6h 10mSouthwest
dim. 10/125:15 amSTL - EUG
1 stop6h 50mSouthwest
Deal found 8/11$339
This Alaska Airlines deal was found by Cheapflights users on 8/12. 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.
jeu. 9/181:36 pmEUG - STL
1 stop8h 23mAlaska Airlines
lun. 9/296:30 pmSTL - EUG
2 stops30h 13mAlaska Airlines
Deal found 8/12$345
This Alaska Airlines deal was found by Cheapflights users on 8/13. 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.
ven. 9/512:50 pmEUG - STL
2 stops9h 09mAlaska Airlines
dim. 9/76:00 amSTL - EUG
1 stop8h 42mAlaska Airlines
Deal found 8/13$348
This Hawaiian Airlines deal was found by Cheapflights users on 8/13. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 9/56:00 amEUG - STL
1 stop6h 39mHawaiian Airlines
dim. 9/76:00 amSTL - EUG
1 stop8h 42mHawaiian Airlines
Deal found 8/13$353

Cheapflights Fare Finder

 
Customize your flight search to find flights from Eugene to St. Louis 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 août 14, 2025.
Use the filters below to find and compare flights from Eugene to St. Louis that are best for you.

Fly from

Eugene

Fly to

St. Louis

Route

Depart

Return

Price

EugeneSt. Louis

EUG - STL

EUGSTL

Eugene

ven. 9/5

12:50 pm-11:59 pm

2 stops9h 09m

Lambert-St Louis

mar. 9/9

6:00 am-12:42 pm

1 stop8h 42m

$313

EugeneSt. Louis

EUG - STL

EUGSTL

Eugene

ven. 11/7

3:25 pm-11:50 pm

1 stop6h 25m

Lambert-St Louis

mar. 11/11

2:29 pm-7:43 pm

1 stop7h 14m

$318

EugeneSt. Louis

EUG - STL

EUGSTL

Eugene

ven. 9/5

12:40 pm-9:16 pm

1 stop6h 36m

Lambert-St Louis

mar. 9/9

6:45 pm-10:46 pm

1 stop6h 01m

$318

EugeneSt. Louis

EUG - STL

EUGSTL

Eugene

ven. 11/7

11:30 am-12:24 am

2 stops10h 54m

Lambert-St Louis

mar. 11/11

6:59 pm-11:49 pm

1 stop6h 50m

$323

EugeneSt. Louis

EUG - STL

EUGSTL

Eugene

jeu. 9/18

1:36 pm-11:59 pm

1 stop8h 23m

Lambert-St Louis

lun. 9/29

6:30 pm-12:25 am

1 stop7h 55m

$324

EugeneSt. Louis

EUG - STL

EUGSTL

Eugene

mer. 10/8

1:47 pm-12:03 am

1 stop8h 16m

Lambert-St Louis

dim. 10/12

6:33 am-3:19 pm

2 stops10h 46m

$334

EugeneSt. Louis

EUG - STL

EUGSTL

Eugene

ven. 9/12

11:04 am-11:59 pm

1 stop10h 55m

Lambert-St Louis

jeu. 9/18

6:30 pm-12:25 am

1 stop7h 55m

$338

EugeneSt. Louis

EUG - STL

EUGSTL

Eugene

sam. 10/18

1:39 pm-12:03 am

1 stop8h 24m

Lambert-St Louis

lun. 10/20

6:33 am-1:07 pm

1 stop8h 34m

$338

EugeneSt. Louis

EUG - STL

EUGSTL

Eugene

jeu. 9/11

1:36 pm-11:59 pm

1 stop8h 23m

Lambert-St Louis

mer. 9/24

3:35 pm-10:48 pm

1 stop9h 13m

$338

EugeneSt. Louis

EUG - STL

EUGSTL

Eugene

sam. 10/18

2:45 pm-11:10 pm

1 stop6h 25m

Lambert-St Louis

lun. 10/20

5:45 pm-10:40 pm

1 stop6h 55m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 20 results
1
2

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

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Eugene 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 Eugene to St. Louis

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

Currently, August is the cheapest month in which you can book a flight from Eugene to St. Louis (average of $311). Flying from Eugene to St. Louis in March is currently the most expensive (average of $356). 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.

How much does it cost to fly round-trip from Eugene to St. Louis?

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated août 14, 2025.
Read through reviews of airlines operating flights from Eugene to St. Louis, such as Alaska Airlines, Southwest, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Southwest
8.0
Very good
4,244 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
United Airlines
7.4
Good
8,916 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)

Related info for your journey

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

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

    According to our current data, American Airlines ($308), Delta ($315), and Alaska Airlines ($317) offers the cheapest pricing from Eugene to St. Louis. These flights start at 33% lower than the current average price 3 months from now.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Eugene to St. Louis (average of $311). Flying from Eugene to St. Louis in March is currently the most expensive (average of $356). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Farmington
Festus

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Top 5 airlines flying from Eugene to St. Louis

Discover the top 5 airlines that operate flights from Eugene to St. Louis. 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 août 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$308Average$431FlexibilityNo cancel feeOn-time71%
DeltaCheapest$315Average$372FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$317Average$523FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$333Average$477FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$362Average$436FlexibilityNo cancel feeOn-time63%

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