Cheap Flights from Arcata (ACV) to Ontario (ONT)

Compare Arcata to Ontario International flight deals

Find the cheapest month or even day of the year to fly to Ontario International

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Find the cheapest month to fly from Arcata to Ontario International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Arcata to Ontario International flights are currently cheapest in August.

Arcata to Ontario: Flight information

The things to know before you go.
Cheapest flight found$433
Cheapest month to flyAugust

Finding cheap flights from Arcata to Ontario International: Frequently asked questions

The best price we found for a return flight from Arcata to Ontario International is $433. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Arcata to Ontario International. But we found flights with one or more stops from $433.
As of July 2026, there are no flights flying from Arcata to Ontario International.
The cheapest month to fly from Arcata to Ontario International is usually August.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Arcata Airport to Ontario International Airport on Thursday, 20 August 2026.
No airlines currently offer direct flights between Arcata Airport and Ontario International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ontario International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ontario is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, United offers the cheapest flight tickets to Ontario International.

Flying from Arcata Airport (ACV) to Ontario International Airport (ONT): what you need to know

  • Arcata and Ontario are in the UTC-8 timezone. That means you won't need to account for any time differences.

  • Leave plenty of time to catch your ACV to ONT flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.

  • Travelling during a peak month like June? Major public holidays and other high seasons can lead to longer lines at airport checkpoints. Play it safe and get there up to four hours before an international flight and two hours before a domestic departure.

  • Break up your flight or explore another city along the way with a stopover. Just deselect 'Direct flights only' to see your options when searching for tickets from Arcata Airport to Ontario International Airport. Many travellers pass through Denver International Airport on this route.

How to find the cheapest flights from Arcata Airport (ACV) to Ontario International Airport (ONT)

  • Currently, $376 is the cheapest price we've seen for a one-way Arcata Airport to Ontario International Airport flight. The best price for a return ticket is $433. Keep in mind that fares may change due to availability when booking.

  • To find cheap tickets from ACV to ONT, book ahead. Airlines usually offer their most competitively priced fares when flights are first made available.

  • Getting cheap flights from Arcata Airport to Ontario International Airport is easier if you're flexible with your trip dates. Use the 'Whole month' tool to see the lowest prices across every month and land a great deal.

  • You don't need to check every day to see if fares have gone down when you create a Price Alert. We'll update you the moment there's a change in price on cheap flights from ACV to ONT.

  • Find the right flight for you with the help of the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Arcata Airport to Ontario International Airport, use the 'Sort by' tool. You can also filter by arrival and departure times, airline, and number of stops.

Handy information about Arcata Airport (ACV)

  • The address for ACV is 3561 Boeing Ave.

  • Of the flights that depart from Arcata Airport, 71% touch down on time at their destination.

  • Arcata Airport is about 11 kilometres from central Arcata. If you're ride-sharing, catching a taxi or driving from the centre, it'll take you 20 minutes or so to get there, depending on the traffic.

  • The trip on public transport typically takes 35 minutes.

  • Catching an early flight from Arcata Airport to Ontario International Airport? Avoid the hassle of rushing to the terminal (and enjoy a little extra shut-eye) by picking one of these hotels near ACV:

Arriving at Ontario International Airport (ONT)

Getting from Ontario International Airport (ONT) to central Ontario

  • The address for ONT is 2900 E. Airport Drive.

  • Ontario International Airport to the centre of Ontario has a drive time of around 15 minutes. It's approximately 10 kilometres away.

  • Travelling to the centre by public transport will take you around 45 minutes.

When to fly to Ontario International Airport (ONT)

  • The quietest month for a flight from Arcata Airport to Ontario International Airport is March, while July is the busiest. Choose the ideal time to visit Ontario based on whether you prefer a faster pace or a more relaxed vibe.

  • The warmest month in Ontario is August, with the temperature ranging between 16ºC (61ºF) and 36ºC (97ºF). Book your flights from Arcata Airport to Ontario International Airport in this month if you like this kind of weather.

  • Search for cheap tickets from ACV to ONT in February if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 4ºC (39ºF) and 24ºC (75ºF) on average.

Explore more of the United States

  • Ontario is easy to fall in love with, but there are so many other parts of the United States just waiting to be explored. Around 56 kilometres west of Ontario, a trip to Los Angeles will fill your itinerary to the brim. Start with leading sights like Hollywood Sign, Universal Studios Hollywood and Hollywood Bowl.

  • Around 153 kilometres south of Ontario, San Diego is another essential stop in the United States. No visit is complete without checking out San Diego Zoo, San Diego Balboa Park and USS Midway Museum.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.