How long is the flight from St. Louis to Eureka?

For as low as $479, United Airlines can have you in Eureka from St. Louis in 12h 02m. Airlines will cover a distance of 1783 mi.

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

Currently, February is the cheapest month in which you can book a flight from St. Louis to Eureka (average of $340). Flying from St. Louis to Eureka in June is currently the most expensive (average of $503). 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.

What is the cheapest day to fly from St. Louis to Eureka?

Travelers seeking maximum savings on their St. Louis to Eureka flight should consider departing on Saturday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Eureka ranges from 0.3 - 8.4 inches per month. December is typically the wettest month, when rainfall can reach 8.4 in. July is typically the driest time to visit Eureka when rainfall is around 0.3 in.

If weather is an important factor for your trip to Eureka, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 57.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 46.4 F).

What is the cheapest month to fly from St. Louis to Eureka?

The best pricing can be found in the month of February. Prices to Eureka from St. Louis average $588. You can even find prices in February for less than $588, as users have found deals to Eureka from as low as $299. The month of April appears to be one of the more expensive times to travel to Eureka from St. Louis. Flying in the targeted month can save you up to 51%.

What is the cheapest time of day to fly from STL to EU9?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Eureka as you normally would.

What airport do you fly from for flights from St. Louis to Eureka?

Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Eureka. You should not have trouble finding flights to Eureka from Lambert-St Louis; the airport handles an average of 0 outbound flights to Eureka per day. You should also have plenty of airline options to choose from since 1 airline has flights from the St. Louis airport to Eureka. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.

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

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

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

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

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

Yes. Cheapflights offers flight deals from St. Louis to Eureka by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$366+ Cheap Flights from St. Louis to Eureka

Q: How much does it cost to fly round-trip from St. Louis to Eureka?

Airfare is typical for this route at the moment. St. Louis to Eureka flights typically cost between $478 and $656 in October. The cheapest round-trip price found within the last 3 days was $479 on United Airlines (Oct 25-Nov 8).

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Cheap flight deals from St. Louis to Eureka

Round-trip from	$479 (United Airlines)
One-way from	$366 (United Airlines)
Popular in	April
Cheapest in	February
Average price	$579

From Lambert-St Louis to Eureka

Search Deals

One-way flight from Lambert-St Louis to Eureka

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($109 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 September 2025

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Find flight deals from St. Louis to Eureka

Cheapest flights from St. Louis to Eureka
Explore the most affordable flight options available from St. Louis to Eureka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Sat 10/255:15 amSTL - ACV

2 stops12h 02mUnited Airlines

Sat 11/86:45 pmACV - STL

2 stops14h 06mUnited Airlines

Deal found 9/10

$479

Tue 9/235:49 pmSTL - ACV

1 stop6h 25mUnited Airlines

Fri 9/264:11 pmACV - STL

2 stops18h 33mUnited Airlines

Deal found 9/9

$537

Best flights from St. Louis to Eureka
Discover carefully curated flight deals from St. Louis to Eureka that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Sat 10/255:15 amSTL - ACV

2 stops12h 02mUnited Airlines

Sat 11/86:45 pmACV - STL

2 stops14h 06mUnited Airlines

Deal found 9/10

$479

Fri 3/67:05 amSTL - ACV

1 stop9h 24mUnited Airlines

Tue 3/105:00 pmACV - STL

2 stops16h 09mUnited Airlines

Deal found 9/11

$484

Tue 9/235:49 pmSTL - ACV

1 stop6h 25mUnited Airlines

Fri 9/264:11 pmACV - STL

2 stops18h 33mUnited Airlines

Deal found 9/9

$537

Last-minute flights from St. Louis to Eureka
Discover last-minute flight deals from St. Louis to Eureka. Data last updated September 11, 2025 and is based on user searches.

Tue 9/235:49 pmSTL - ACV

1 stop6h 25mUnited Airlines

Fri 9/264:11 pmACV - STL

2 stops18h 33mUnited Airlines

Deal found 9/9

$537

Sat 10/255:15 amSTL - ACV

2 stops12h 02mUnited Airlines

Sat 11/86:45 pmACV - STL

2 stops14h 06mUnited Airlines

Deal found 9/10

$479

One-way flights from St. Louis to Eureka
Search for one-way flight options from St. Louis to Eureka. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Sat 10/258:25 amSTL - ACV

2 stops28h 30mUnited Airlines

Deal found 9/11

$366

Fly from

Fly to

Route

Depart

Return

Price

St. LouisArcata

STL - ACV

STLACV

Lambert-St Louis

Sat 10/25

5:15 am-3:17 pm

2 stops12h 02m

Arcata Eureka

Sat 11/8

6:45 pm-10:51 am

2 stops14h 06m

$479

St. LouisArcata

STL - ACV

STLACV

Lambert-St Louis

Fri 3/6

7:05 am-2:29 pm

1 stop9h 24m

Arcata Eureka

Tue 3/10

5:00 pm-11:09 am

2 stops16h 09m

$484

St. LouisArcata

STL - ACV

STLACV

Lambert-St Louis

Tue 9/23

5:49 pm-10:14 pm

1 stop6h 25m

Arcata Eureka

Fri 9/26

4:11 pm-12:44 pm

2 stops18h 33m

$537

St. LouisArcata

STL - ACV

STLACV

Lambert-St Louis

Sat 10/25

8:25 am-10:55 am

2 stops28h 30m

$366

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

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

Have a flexible travel schedule? Discover the best time to fly to Eureka 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 Eureka

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

Reviews of airlines servicing Eureka

Peruse reviews from past customers who have flown with United Airlines from St. Louis to Eureka to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

United Airlines

7.4

Good

8,937 reviews

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

What airport do you fly from for flights from St. Louis to Eureka?
Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Eureka. You should not have trouble finding flights to Eureka from Lambert-St Louis; the airport handles an average of 0 outbound flights to Eureka per day. You should also have plenty of airline options to choose from since 1 airline has flights from the St. Louis airport to Eureka. It is only a 12.7 mi journey to Lambert-St Louis (STL) from St. Louis’s city center.
How long is the flight from St. Louis to Eureka?
For as low as $479, United Airlines can have you in Eureka from St. Louis in 12h 02m. Airlines will cover a distance of 1783 mi.
Can I find deals for flights from St. Louis to Eureka that include hotel bookings?
Yes. In addition to deals on St. Louis to Eureka flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Eureka?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Eureka.
Can I find deals for business class flights from St. Louis to Eureka?
Yes. Cheapflights offers flight deals from St. Louis to Eureka 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 Eureka?
Currently, February is the cheapest month in which you can book a flight from St. Louis to Eureka (average of $340). Flying from St. Louis to Eureka in June is currently the most expensive (average of $503). 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

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Top airline flying from St. Louis to Eureka

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$316	Average$576	FlexibilityNo cancel fee	On-time69%

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$366+ Cheap flights from St. Louis (STL) to Eureka, CA

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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Eureka with Cheapflights

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2. Select your favorite providers

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Cheap flight deals from St. Louis to Eureka

Keep the following information in mind while searching for St. Louis to Eureka flight deals. Data was last updated September 11, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Eureka

Cheapest flights from St. Louis to EurekaExplore the most affordable flight options available from St. Louis to Eureka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from St. Louis to Eureka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Eureka that are best for you.

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

Have a flexible travel schedule? Discover the best time to fly to Eureka from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Eureka

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

Reviews of airlines servicing Eureka

Peruse reviews from past customers who have flown with United Airlines from St. Louis to Eureka to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What airport do you fly from for flights from St. Louis to Eureka?

How long is the flight from St. Louis to Eureka?

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

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

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

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

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.

Alternative routes for St. Louis to Eureka

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from St. Louis to Eureka

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Book with Flexibility

Travel Smart

Cheapest flights from St. Louis to Eureka
Explore the most affordable flight options available from St. Louis to Eureka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.