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

Currently, January is the cheapest month in which you can book a flight from St. Louis to Eureka (average of $343). Flying from St. Louis to Eureka in June is currently the most expensive (average of $572). 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 $574. You can even find prices in February for less than $574, as users have found deals to Eureka from as low as $299. The month of December 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 43%.

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.

$415+ 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 $374 and $624 in September. The cheapest round-trip price found within the last 3 days was $447 on United Airlines (Sep 17-Sep 24).

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Cheap flight deals from St. Louis to Eureka

Round-trip from	$447 (United Airlines)
One-way from	$415 (United Airlines)
Popular in	December
Cheapest in	February
Average price	$504

From Lambert-St Louis to Eureka

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One-way flight from Lambert-St Louis to Eureka

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Highest demand for flights based on searches. 11% potential increase in price ($76 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($28 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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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 July 29, 2025.

Wed 9/175:49 pmSTL - ACV

1 stop6h 25mUnited Airlines

Wed 9/246:40 pmACV - STL

2 stops14h 09mUnited Airlines

Deal found 7/29

$447

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 July 29, 2025.

Wed 9/175:49 pmSTL - ACV

1 stop6h 25mUnited Airlines

Wed 9/246:40 pmACV - STL

2 stops14h 09mUnited Airlines

Deal found 7/29

$447

Last-minute flights from St. Louis to Eureka
Discover last-minute flight deals from St. Louis to Eureka. Data last updated July 29, 2025 and is based on user searches.

Thu 8/145:41 pmSTL - ACV

1 stop6h 34mUnited Airlines

Mon 8/185:00 amACV - STL

1 stop9h 31mUnited Airlines

Deal found 7/29

$618

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 July 29, 2025.

Fri 8/155:41 pmSTL - ACV

1 stop6h 34mUnited Airlines

Deal found 7/27

$415

Fly from

Fly to

Route

Depart

Return

Price

St. LouisArcata

STL - ACV

STLACV

Lambert-St Louis

Wed 9/17

5:49 pm-10:14 pm

1 stop6h 25m

Arcata Eureka

Wed 9/24

6:40 pm-10:49 am

2 stops14h 09m

$447

St. LouisArcata

STL - ACV

STLACV

Lambert-St Louis

Fri 8/15

5:41 pm-10:15 pm

1 stop6h 34m

$415

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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

8,899 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

United Airlines

7.4

Good

8,899 reviews

United Airlines

7.4

Good

8,899 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Apr 2025

TPE - SFO

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.
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, January is the cheapest month in which you can book a flight from St. Louis to Eureka (average of $343). Flying from St. Louis to Eureka in June is currently the most expensive (average of $572). 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$589	FlexibilityNo cancel fee	On-time69%

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$415+ 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 8/15. 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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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 July 29, 2025.

Round-trip from

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Popular in

Cheapest in

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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 July 29, 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 July 29, 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

Get insights into the airlines that provide service to Eureka. 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 Eureka. Reviews last updated July 29, 2025.

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?

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

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Top airline flying from St. Louis to Eureka

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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 July 29, 2025.