$257 Cheap Flights from St. Louis (STL) to Eureka (ACV)

View $257 flight on Sat, Apr 18, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Eureka, CA (ACV-Arcata - Eureka)

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Cheap Flights from St. Louis to Eureka (STL-ACV)

Prices were available within the past 7 days and start at $257 for one-way flights and $319 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Nov 13 - Tue, Nov 18
STL
St. Louis
ACV
Eureka
$319 Roundtrip, found 4 days ago
$319
Roundtrip
found 4 days ago
Select United flight, departing Thu, Nov 13 from St. Louis to Eureka, returning Tue, Nov 18, priced at $319 found 4 days ago
United
Wed, Nov 19 - Sat, Dec 6
STL
St. Louis
ACV
Eureka
$374 Roundtrip, found 3 days ago
$374
Roundtrip
found 3 days ago
Select United flight, departing Wed, Nov 19 from St. Louis to Eureka, returning Sat, Dec 6, priced at $374 found 3 days ago
United
Sun, Nov 23 - Mon, Dec 8
STL
St. Louis
ACV
Eureka
$384 Roundtrip, found 3 days ago
$384
Roundtrip
found 3 days ago
Select United flight, departing Sun, Nov 23 from St. Louis to Eureka, returning Mon, Dec 8, priced at $384 found 3 days ago
United
Tue, Nov 18 - Fri, Dec 5
STL
St. Louis
ACV
Eureka
$389 Roundtrip, found 3 days ago
$389
Roundtrip
found 3 days ago
Select United flight, departing Tue, Nov 18 from St. Louis to Eureka, returning Fri, Dec 5, priced at $389 found 3 days ago
United
Thu, Nov 13 - Tue, Nov 18
STL
St. Louis
ACV
Eureka
$394 Roundtrip, found 4 days ago
$394
Roundtrip
found 4 days ago
Select United flight, departing Thu, Nov 13 from St. Louis to Eureka, returning Tue, Nov 18, priced at $394 found 4 days ago
United
Sun, Nov 23 - Tue, Dec 9
STL
St. Louis
ACV
Eureka
$399 Roundtrip, found 3 days ago
$399
Roundtrip
found 3 days ago
Select United flight, departing Sun, Nov 23 from St. Louis to Eureka, returning Tue, Dec 9, priced at $399 found 3 days ago
United
Wed, Nov 19 - Wed, Dec 3
STL
St. Louis
ACV
Eureka
$409 Roundtrip, found 3 days ago
$409
Roundtrip
found 3 days ago
Select United flight, departing Wed, Nov 19 from St. Louis to Eureka, returning Wed, Dec 3, priced at $409 found 3 days ago
United
Tue, Nov 18 - Wed, Dec 3
STL
St. Louis
ACV
Eureka
$414 Roundtrip, found 3 days ago
$414
Roundtrip
found 3 days ago
Select United flight, departing Tue, Nov 18 from St. Louis to Eureka, returning Wed, Dec 3, priced at $414 found 3 days ago
United
Thu, Nov 13 - Tue, Nov 18
STL
St. Louis
ACV
Eureka
$421 Roundtrip, found 4 days ago
$421
Roundtrip
found 4 days ago
Select United flight, departing Thu, Nov 13 from St. Louis to Eureka, returning Tue, Nov 18, priced at $421 found 4 days ago
Alaska Airlines
Wed, Apr 15 - Tue, Apr 21
STL
St. Louis
ACV
Eureka
$430 Roundtrip, found 2 days ago
$430
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Apr 15 from St. Louis to Eureka, returning Tue, Apr 21, priced at $430 found 2 days ago

Alternative airports near Eureka

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Arcata - Eureka ACV. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $725
ACV
Arcata - Eureka
Cheapest
Average driving time to city center20 min
Flights from $725

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Arcata - Eureka Airport (ACV) cost?
Secure a cheap one-way flight from $257 or cheap return flight from $319 from Lambert-St. Louis Intl. Airport (STL) to Arcata - Eureka Airport (ACV) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Arcata - Eureka Airport (ACV)?
The cheapest month to fly from STL to ACV is November, when there's less demand. Off-peak season is generally when airlines offer better prices between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Arcata - Eureka Airport (ACV)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from STL to ACV. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Arcata - Eureka Airport (ACV)?
There aren't any daily direct flights departing from Lambert-St. Louis Intl. Airport (STL) to Arcata - Eureka Airport (ACV). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from STL to ACV?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Arcata - Eureka Airport (ACV)?
To arrive at Arcata - Eureka Airport (ACV) on schedule, select a flight that takes off from Lambert-St. Louis Intl. Airport (STL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Arcata - Eureka Airport (ACV) last-minute?
Booking your plane ticket from STL to ACV shortly before your getaway is usually more expensive. But if you're flexible with your schedule, you could bag a cheap last-minute fare.
Is it cheaper to book a STL to ACV flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to ACV flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one place takes the hassle out of planning your trip. Just secure your flights and select from our wide range of stays, then tailor your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Arcata - Eureka Airport (ACV)?
If you booked your STL to ACV flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Arcata - Eureka
Airlines serving
Alaska Airlines, United
Roundtrip price
$319
Distance
1785 mi

Book with confidence

St. Louis to Eureka Flights

The cheapest times to fly from St. Louis to Eureka

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Eureka are during the month of November. You can find some of the cheapest flights from St. Louis to Eureka with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Eureka

Sunday is one of the best days to book for cheap flights from St. Louis to Eureka: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Eureka

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Eureka in 2025. You can also book with separate airlines for your outbound and return journeys, from $257 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Eureka flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Eureka airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Eureka Flights

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*Available to One Key members.