$257 Cheap Flights from Ontario Intl. Airport (ONT) to Eureka (ACV)

You can find cheap one-way flights from $257 and cheap return flights $349 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.

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.

Enter ONT to ACV and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

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.

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.

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.

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.

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.

First class seats are offered on the ONT to ACV route with United Airlines.

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.

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.

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.

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.

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.