$274 Cheap Flights from Ontario Intl. Airport (ONT) to Eureka (ACV)

View $274 flight on Tue, Jun 23, 2026Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Eureka, CA (ACV-Arcata - Eureka)

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Cheap Flights from Ontario Intl. Airport to Eureka (ONT-ACV)

Prices were available within the past 7 days and start at $274 for one-way flights and $314 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Jun 23 - Sun, Jun 28
ONT
Ontario
ACV
Eureka
$314 Roundtrip, just found
$314
Roundtrip
just found
Select United flight, departing Tue, Jun 23 from Ontario to Eureka, returning Sun, Jun 28, priced at $314 just found
United
Tue, Jun 2 - Thu, Jun 11
ONT
Ontario
ACV
Eureka
$324 Roundtrip, found 1 day ago
$324
Roundtrip
found 1 day ago
Select United flight, departing Tue, Jun 2 from Ontario to Eureka, returning Thu, Jun 11, priced at $324 found 1 day ago
United
Fri, May 29 - Sat, May 30
ONT
Ontario
ACV
Eureka
$334 Roundtrip, found 2 days ago
$334
Roundtrip
found 2 days ago
Select United flight, departing Fri, May 29 from Ontario to Eureka, returning Sat, May 30, priced at $334 found 2 days ago
United
Tue, Jun 16 - Mon, Jun 22
ONT
Ontario
ACV
Eureka
$340 Roundtrip, found 2 days ago
$340
Roundtrip
found 2 days ago
Select United flight, departing Tue, Jun 16 from Ontario to Eureka, returning Mon, Jun 22, priced at $340 found 2 days ago
United
Tue, Jun 23 - Sun, Jun 28
ONT
Ontario
ACV
Eureka
$343 Roundtrip, just found
$343
Roundtrip
just found
Select United flight, departing Tue, Jun 23 from Ontario to Eureka, returning Sun, Jun 28, priced at $343 just found
United
Tue, Jun 16 - Tue, Jun 23
ONT
Ontario
ACV
Eureka
$346 Roundtrip, found 4 days ago
$346
Roundtrip
found 4 days ago
Select United flight, departing Tue, Jun 16 from Ontario to Eureka, returning Tue, Jun 23, priced at $346 found 4 days ago
United
Thu, Jul 2 - Tue, Jul 7
ONT
Ontario
ACV
Eureka
$349 Roundtrip, found 4 days ago
$349
Roundtrip
found 4 days ago
Select United flight, departing Thu, Jul 2 from Ontario to Eureka, returning Tue, Jul 7, priced at $349 found 4 days ago
United
Fri, Jun 5 - Sun, Jun 7
ONT
Ontario
ACV
Eureka
$350 Roundtrip, found 19 hours ago
$350
Roundtrip
found 19 hours ago
Select United flight, departing Fri, Jun 5 from Ontario to Eureka, returning Sun, Jun 7, priced at $350 found 19 hours ago
United
Wed, May 27 - Wed, Jun 3
ONT
Ontario
ACV
Eureka
$353 Roundtrip, found 4 days ago
$353
Roundtrip
found 4 days ago
Select United flight, departing Wed, May 27 from Ontario to Eureka, returning Wed, Jun 3, priced at $353 found 4 days ago
Alaska Airlines
Fri, Jun 5 - Mon, Jun 8
ONT
Ontario
ACV
Eureka
$448 Roundtrip, found 4 days ago
$448
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Fri, Jun 5 from Ontario to Eureka, returning Mon, Jun 8, priced at $448 found 4 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 $710
ACV
Arcata - Eureka
Cheapest
Average driving time to city center20 min
Flights from $710

Frequently asked questions

How much does a flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka) cost?
You can find cheap one-way flights from $274 and cheap return flights from $314 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka) with Expedia. One-way flights generally range between $238 and $844, and roundtrip flights usually range from $319 to $1345. 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 Ontario, CA (ONT-Los Angeles - Ontario 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
February is the cheapest month to fly from Ontario, CA (ONT) to Eureka, CA (ACV), with average return fares around $278. This fare is approximately 39% lower than the average price for the year, as February often experiences less travel demand after the holiday season. Other cheap months to fly from ONT to ACV include January and November.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
Enter ONT to ACV and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
United is one of the cheapest airlines offering connecting flights from Ontario, CA (ONT) to Eureka, CA (ACV), with round-trip tickets starting from around $244 with a layover in San Francisco Intl. (SFO). 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
To find a cheap flight from Ontario, CA (ONT-Los Angeles - Ontario 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 time to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
The best times to fly from Ontario, CA (ONT) to Eureka, CA (ACV) are January and February. Return flights during these months average about $278, making them the most economical choices. January is a great time to escape the winter chill, while February offers a chance to enjoy the early spring scenery.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
The earliest flight from Los Angeles - Ontario International Airport (ONT) to Arcata - Eureka Airport (ACV) usually departs at around 5:00 AM, operated by United Airlines. This early flight allows you to arrive in Eureka with plenty of time to explore. This service is seasonal, active in February. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
A flight from ONT to ACV with a layover takes around 8 hours 30 minutes, with the route covering approximately 596 miles. 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
First class seats are offered on the ONT to ACV route with United Airlines.
How do I earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka) flight with Expedia?
It's easy to earn miles on a Ontario, CA (ONT-Los Angeles - Ontario 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 Los Angeles - Ontario Intl. (ONT)?
From Los Angeles - Ontario Intl. (ONT), you can fly into Arcata - Eureka (ACV) to reach Eureka. Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Portland Intl. (PDX), San Francisco Intl. (SFO) 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka) at the last minute?
Typically, booking a last minute flight from Ontario, CA (ONT-Los Angeles - Ontario 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka) flight and hotel package?
Securing a Ontario, CA (ONT-Los Angeles - Ontario 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 Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Eureka, CA (ACV-Arcata - Eureka)?
If you booked your Ontario, CA (ONT-Los Angeles - Ontario 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.

Travel information

Origin airport
Ontario Intl. Airport
Destination airport
Arcata - Eureka
Airlines serving
Alaska Airlines, United
Roundtrip price
$314
Distance
595 mi

Book with confidence

Ontario Intl. Airport to Eureka Flights

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

 

The best time to book a flight from Ontario Intl. Airport to Eureka

Sunday is one of the best days to book for cheap flights from Ontario Intl. Airport 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 Ontario Intl. Airport 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 Ontario Intl. Airport to Eureka in 2026. You can also book with separate airlines for your outbound and return journeys, from $274 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 Ontario Intl. Airport 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 Ontario Intl. Airport 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.

 

Ontario Intl. Airport to Eureka Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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