$253 Cheap Flights from Eureka (ACV) to St. Louis (STL)

View $253 flight on Tue, Jun 9, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $253 for one-way flights and $409 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Nov 24 - Tue, Dec 9
ACV
Eureka
STL
St. Louis
$409 Roundtrip, found 2 hours ago
$409
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Nov 24 from Eureka to St. Louis, returning Tue, Dec 9, priced at $409 found 2 hours ago
United
Wed, Nov 19 - Mon, Nov 24
ACV
Eureka
STL
St. Louis
$444 Roundtrip, found 4 hours ago
$444
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Nov 19 from Eureka to St. Louis, returning Mon, Nov 24, priced at $444 found 4 hours ago
United
Tue, Nov 18 - Mon, Nov 24
ACV
Eureka
STL
St. Louis
$489 Roundtrip, found 4 hours ago
$489
Roundtrip
found 4 hours ago
Select United flight, departing Tue, Nov 18 from Eureka to St. Louis, returning Mon, Nov 24, priced at $489 found 4 hours ago
United
Mon, Nov 24 - Sat, Dec 13
ACV
Eureka
STL
St. Louis
$492 Roundtrip, found 2 hours ago
$492
Roundtrip
found 2 hours ago
Select United flight, departing Mon, Nov 24 from Eureka to St. Louis, returning Sat, Dec 13, priced at $492 found 2 hours ago
United
Mon, Nov 17 - Mon, Nov 24
ACV
Eureka
STL
St. Louis
$499 Roundtrip, found 4 hours ago
$499
Roundtrip
found 4 hours ago
Select United flight, departing Mon, Nov 17 from Eureka to St. Louis, returning Mon, Nov 24, priced at $499 found 4 hours ago
United
Wed, Nov 26 - Tue, Dec 9
ACV
Eureka
STL
St. Louis
$514 Roundtrip, found 2 hours ago
$514
Roundtrip
found 2 hours ago
Select United flight, departing Wed, Nov 26 from Eureka to St. Louis, returning Tue, Dec 9, priced at $514 found 2 hours ago
United
Wed, Nov 19 - Sun, Nov 23
ACV
Eureka
STL
St. Louis
$524 Roundtrip, found 4 hours ago
$524
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Nov 19 from Eureka to St. Louis, returning Sun, Nov 23, priced at $524 found 4 hours ago
United
Tue, Nov 18 - Tue, Nov 25
ACV
Eureka
STL
St. Louis
$534 Roundtrip, found 4 hours ago
$534
Roundtrip
found 4 hours ago
Select United flight, departing Tue, Nov 18 from Eureka to St. Louis, returning Tue, Nov 25, priced at $534 found 4 hours ago
United
Mon, Nov 17 - Tue, Nov 25
ACV
Eureka
STL
St. Louis
$544 Roundtrip, found 4 hours ago
$544
Roundtrip
found 4 hours ago
Select United flight, departing Mon, Nov 17 from Eureka to St. Louis, returning Tue, Nov 25, priced at $544 found 4 hours ago
United
Tue, Nov 25 - Tue, Dec 9
ACV
Eureka
STL
St. Louis
$560 Roundtrip, found 2 hours ago
$560
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Nov 25 from Eureka to St. Louis, returning Tue, Dec 9, priced at $560 found 2 hours ago

Alternative airports near St. Louis

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

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $444
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $444

Frequently asked questions

How much does a flight from Arcata - Eureka Airport (ACV) to Lambert-St. Louis Intl. Airport (STL) cost?
Get a cheap one-way flight from $253 or cheap return flight from $409 from Arcata - Eureka Airport (ACV) to Lambert-St. Louis Intl. Airport (STL) 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 Arcata - Eureka Airport (ACV) to Lambert-St. Louis Intl. Airport (STL)?
November is the least expensive month to fly from ACV to STL. Avoiding peak travel times is often the key to finding better deals on flights.
What is the cheapest airline that flies from Arcata - Eureka Airport (ACV) to Lambert-St. Louis Intl. Airport (STL)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest ACV to STL flight.
How many flights per day from Arcata - Eureka Airport (ACV) to Lambert-St. Louis Intl. Airport (STL)?
There aren't any daily nonstop flights departing from Arcata - Eureka Airport (ACV) to Lambert-St. Louis Intl. Airport (STL). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from ACV to STL?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary 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 Arcata - Eureka Airport (ACV) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the Arcata - Eureka Airport (ACV) to Lambert-St. Louis Intl. Airport (STL) route, fly before 3 PM. Departures after this hour are 22% more likely to be canceled.**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 Arcata - Eureka Airport (ACV) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your flight from ACV to STL shortly before your getaway is usually more expensive. However, if you're flexible with your schedule, you could bag a cheap last-minute fare.
Is it cheaper to book an ACV to STL flight and hotel package?
You can save money by booking an ACV to STL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After selecting your preferred flights and accommodations, consider adding extras including activities, car rentals and tours.
Can I cancel or change the date of my flight from Arcata - Eureka Airport (ACV) to Lambert-St. Louis Intl. Airport (STL)?
It's generally possible to cancel or reschedule your ACV to STL flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Arcata - Eureka
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
$409
Distance
1785 mi

Book with confidence

Eureka to St. Louis Flights

The cheapest times to fly from Eureka to St. Louis

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 Eureka to St. Louis are during the month of November. You can find some of the cheapest flights from Eureka to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Eureka to St. Louis: 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 Eureka to St. Louis

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 Eureka to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $253 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 Eureka to St. Louis 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 Eureka to St. Louis 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.

 

Eureka to St. Louis Flights

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*Available to One Key members.