$234 Cheap Flights from Eureka (ACV) to Ontario (ONT)

View $234 flight on Sun, Aug 24, 2025Opens in a new window

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

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Cheap Flights from Eureka to Ontario (ACV-ONT)

Prices were available within the past 7 days and start at $234 for one-way flights and $244 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Sep 11 - Wed, Sep 17
ACV
Eureka
ONT
Ontario
$244 Roundtrip, found 1 hour ago
$244
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Sep 11 from Eureka to Ontario, returning Wed, Sep 17, priced at $244 found 1 hour ago
United
Wed, Aug 13 - Wed, Aug 20
ACV
Eureka
ONT
Ontario
$249 Roundtrip, found 3 days ago
$249
Roundtrip
found 3 days ago
Select United flight, departing Wed, Aug 13 from Eureka to Ontario, returning Wed, Aug 20, priced at $249 found 3 days ago
United
Wed, Nov 19 - Sat, Nov 22
ACV
Eureka
ONT
Ontario
$255 Roundtrip, found 6 days ago
$255
Roundtrip
found 6 days ago
Select United flight, departing Wed, Nov 19 from Eureka to Ontario, returning Sat, Nov 22, priced at $255 found 6 days ago
United
Thu, Sep 11 - Wed, Sep 17
ACV
Eureka
ONT
Ontario
$256 Roundtrip, found 1 hour ago
$256
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Sep 11 from Eureka to Ontario, returning Wed, Sep 17, priced at $256 found 1 hour ago
United
Sat, Oct 4 - Mon, Oct 6
ACV
Eureka
ONT
Ontario
$263 Roundtrip, found 6 days ago
$263
Roundtrip
found 6 days ago
Select United flight, departing Sat, Oct 4 from Eureka to Ontario, returning Mon, Oct 6, priced at $263 found 6 days ago
United
Wed, Sep 17 - Tue, Sep 23
ACV
Eureka
ONT
Ontario
$264 Roundtrip, found 1 hour ago
$264
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Sep 17 from Eureka to Ontario, returning Tue, Sep 23, priced at $264 found 1 hour ago
United
Thu, Sep 11 - Wed, Sep 17
ACV
Eureka
ONT
Ontario
$268 Roundtrip, found 1 hour ago
$268
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Sep 11 from Eureka to Ontario, returning Wed, Sep 17, priced at $268 found 1 hour ago
United
Wed, Aug 20 - Sun, Aug 24
ACV
Eureka
ONT
Ontario
$273 Roundtrip, found 6 days ago
$273
Roundtrip
found 6 days ago
Select United flight, departing Wed, Aug 20 from Eureka to Ontario, returning Sun, Aug 24, priced at $273 found 6 days ago
United
Fri, Sep 5 - Sun, Sep 7
ACV
Eureka
ONT
Ontario
$274 Roundtrip, found 2 days ago
$274
Roundtrip
found 2 days ago
Select United flight, departing Fri, Sep 5 from Eureka to Ontario, returning Sun, Sep 7, priced at $274 found 2 days ago
United
Wed, Sep 17 - Tue, Sep 23
ACV
Eureka
ONT
Ontario
$278 Roundtrip, found 1 hour ago
$278
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Sep 17 from Eureka to Ontario, returning Tue, Sep 23, priced at $278 found 1 hour ago

Alternative airports near Ontario

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to John Wayne SNA. Cheapest option available. Average driving time to city center is 42 minutes. Flights from $413
SNA
John Wayne
Cheapest
Average driving time to city center42 min
Flights from $413
Flights from Eureka (ACV) to Ontario (ONT)
Origin airport
Arcata - Eureka
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
United
Roundtrip price
$244
Distance
595 mi

Eureka to Ontario Flights

The cheapest times to fly from Eureka to Ontario

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 Eureka to Ontario are during the month of September. You can find some of the cheapest flights from Eureka to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Eureka to Ontario

Sunday is one of the best days to book for cheap flights from Eureka to Ontario: 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 Eureka to Ontario

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 Eureka to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $234 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 Eureka to Ontario 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 Eureka to Ontario 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 Arcata - Eureka Airport (ACV) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Discover the latest flight deals from ACV to ONT by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ACV to ONT?
The cheapest flights from ACV to ONT are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ACV to ONT?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ACV to ONT. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Arcata - Eureka Airport (ACV) to Los Angeles - Ontario Intl. Airport (ONT)?
You'll need to catch a flight with a layover when traveling from Arcata - Eureka Airport (ACV) to Los Angeles - Ontario Intl. Airport (ONT). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from ACV to ONT?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary depending on a range of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Arcata - Eureka Airport (ACV) to Los Angeles - Ontario Intl. Airport (ONT)?
To avoid potential delays on the Arcata - Eureka Airport (ACV) to Los Angeles - Ontario Intl. Airport (ONT) route, travel before 3 PM. Later departures are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Ontario from Arcata - Eureka Airport (ACV)?
You'll land at Los Angeles Intl. Airport (LAX) or Bob Hope Airport (BUR) when you travel to Ontario on a direct flight from Arcata - Eureka Airport (ACV).
Is it cheaper to buy a plane ticket from Arcata - Eureka Airport (ACV) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Booking your flight from ACV to ONT right before your trip is usually more expensive. However, if there's some wiggle room with your departure dates and times, you could score a cheap last-minute fare.
Is it cheaper to book an ACV to ONT flight and hotel package?
Compared with arranging flights and hotels separately, booking an ACV to ONT flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place takes the hassle out of travel planning. Just pick your flights and select from our extensive range of hotels, then personalize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Arcata - Eureka Airport (ACV) to Los Angeles - Ontario Intl. Airport (ONT)?
Typically, you're able to reschedule or cancel your ACV to ONT flight. However, there may be additional fees, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you want further details, go to our Customer Service portal.

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*Available to One Key members.