$109 Cheap Flights from Denver (DEN) to Eureka (ACV)

View $109 flight on Tue, Apr 14, 2026Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Eureka, CA (ACV-Arcata - Eureka)

Cheap Flights from Denver to Eureka (DEN-ACV)

Prices were available within the past 7 days and start at $109 for one-way flights and $235 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Mar 4 - Tue, Mar 10
DEN
Denver
ACV
Eureka
$235 Roundtrip, found 2 days ago
$235
Roundtrip
found 2 days ago
Select United flight, departing Wed, Mar 4 from Denver to Eureka, returning Tue, Mar 10, priced at $235 found 2 days ago
United
Mon, Feb 16 - Tue, Feb 24
DEN
Denver
ACV
Eureka
$240 Roundtrip, found 6 days ago
$240
Roundtrip
found 6 days ago
Select United flight, departing Mon, Feb 16 from Denver to Eureka, returning Tue, Feb 24, priced at $240 found 6 days ago
United
Tue, Apr 14 - Sat, Apr 18
DEN
Denver
ACV
Eureka
$244 Roundtrip, found 2 hours ago
$244
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Apr 14 from Denver to Eureka, returning Sat, Apr 18, priced at $244 found 2 hours ago
United
Thu, Mar 19 - Wed, Mar 25
DEN
Denver
ACV
Eureka
$249 Roundtrip, found 2 days ago
$249
Roundtrip
found 2 days ago
Select United flight, departing Thu, Mar 19 from Denver to Eureka, returning Wed, Mar 25, priced at $249 found 2 days ago
Alaska Airlines
Tue, Apr 14 - Sat, Apr 18
DEN
Denver
ACV
Eureka
$252 Roundtrip, found 2 hours ago
$252
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Tue, Apr 14 from Denver to Eureka, returning Sat, Apr 18, priced at $252 found 2 hours ago
United
Wed, Apr 15 - Tue, Apr 21
DEN
Denver
ACV
Eureka
$254 Roundtrip, found 5 days ago
$254
Roundtrip
found 5 days ago
Select United flight, departing Wed, Apr 15 from Denver to Eureka, returning Tue, Apr 21, priced at $254 found 5 days ago
United
Thu, Feb 26 - Fri, Mar 6
DEN
Denver
ACV
Eureka
$255 Roundtrip, found 4 days ago
$255
Roundtrip
found 4 days ago
Select United flight, departing Thu, Feb 26 from Denver to Eureka, returning Fri, Mar 6, priced at $255 found 4 days ago
United
Tue, Apr 14 - Sat, Apr 18
DEN
Denver
ACV
Eureka
$256 Roundtrip, found 2 hours ago
$256
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Apr 14 from Denver to Eureka, returning Sat, Apr 18, priced at $256 found 2 hours ago
United
Wed, Mar 4 - Tue, Mar 10
DEN
Denver
ACV
Eureka
$259 Roundtrip, found 2 days ago
$259
Roundtrip
found 2 days ago
Select United flight, departing Wed, Mar 4 from Denver to Eureka, returning Tue, Mar 10, priced at $259 found 2 days ago
United
Tue, Aug 18 - Mon, Aug 24
DEN
Denver
ACV
Eureka
$263 Roundtrip, found 20 hours ago
$263
Roundtrip
found 20 hours ago
Select United flight, departing Tue, Aug 18 from Denver to Eureka, returning Mon, Aug 24, priced at $263 found 20 hours 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 $800
ACV
Arcata - Eureka
Cheapest
Average driving time to city center20 min
Flights from $800

Find the cheapest month to fly from Denver (DEN) to Eureka (ACV)

February is typically the cheapest month to fly

From $224 - $622 per traveler.
Flights from Denver (DEN) to Eureka (ACV)
Origin airport
Denver Intl.
Destination airport
Arcata - Eureka
Airlines serving
Alaska Airlines, United
Roundtrip price
$234
Distance
1023 mi
Average flight time
3 hours 11 mins

Denver to Eureka Flights

The cheapest times to fly from Denver 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 Denver to Eureka are during the month of March. You can find some of the cheapest flights from Denver to Eureka with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Denver to Eureka

Sunday is one of the best days to book for cheap flights from Denver 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 Denver 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 Denver to Eureka in 2026. You can also book with separate airlines for your outbound and return journeys, from $109 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 Denver 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 Denver 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.

 

Frequently asked questions

How much does a flight from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka) cost?
You can find cheap one-way flights from $109 and cheap return flights from $235 Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka) with Expedia. One-way flights usually range from $158 to $740, and return flights typically cost between $259 and $1129. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
The cheapest month to fly from DEN to ACV is March when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
United offers around 8 weekly direct flights from DEN to ACV.
What is the cheapest airline that flies from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
United is one of the cheapest airlines offering nonstop flights from Denver, CO (DEN) to Eureka, CA (ACV), with round-trip tickets starting from around $472. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
The best airline to fly with from Denver, CO (DEN) to Eureka, CA (ACV) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, United typically offers the lowest fares. United also offers the most daily flights from DEN to ACV, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
On average, there are around 1 nonstop flights per day from Denver Intl. (DEN) to Arcata - Eureka (ACV). For more options, look at flights that include layovers.
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
The earliest flight from Denver International Airport (DEN) to Arcata - Eureka Airport (ACV) typically departs at around 5:00 AM local time, operated by United Airlines. This is a seasonal service active in August, making it a good option for summer travel. An early flight like this can help you make the most of your day in Eureka. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
The most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka) are from 9am to noon. About 44% of passengers prefer this time window. Many major carriers, including United Airlines and Alaska Airlines, offer flights during this window. This timing is favored because it allows travelers to enjoy a full day at their destination.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
A nonstop flight from DEN to ACV typically takes around 3 hours 20 minutes, covering approximately 1,023 miles. Connecting flights on this route usually add 2 hours 40 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
First class seats are offered on the DEN to ACV route with United Airlines.
How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Eureka from Denver Intl. (DEN)?
If you're planning to travel to Eureka from Denver Intl. (DEN), you can fly into Arcata - Eureka (ACV) Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Salt Lake City Intl. (SLC), Los Angeles Intl. (LAX) before reaching Eureka. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka) flight and hotel package?
Securing a Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
If you booked your Denver, CO (DEN-Denver Intl.) to Eureka, CA (ACV-Arcata - Eureka) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

*Flight schedules are subject to change.

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*Available to One Key members.