Cheap Flights from Denver (DEN) to Ontario (ONT)

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Cheap Flights from Denver (DEN) to Ontario (ONT)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

United
United
Flight from Denver to Ontario route information
Origin airport
Denver Intl.
Destination airport
Los Angeles - Ontario Intl.
Return price
AU$250
Distance
1306 km

Your quick guide to flights from Denver to Ontario

Pick up great flights from Denver to Ontario

With Expedia, you have your pick of 12 flights a day with 16 airlines covering flights from Denver to Ontario. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Denver to Ontario that take around 0 hours.

Find cheap flights from Denver to Ontario

From the great flight deals with prices currently ranging from AU$250 to AU$479, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Denver to Ontario around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Ontario is normally in April.

Reasons to book your flight from Denver to Ontario with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Denver to Ontario across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Ontario right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from Denver Intl. Airport (DEN) to Ontario Airport?
Round-trip tickets from DEN to Ontario Airport start from AU$250. This price is based on fares quoted within the last 7 days on Expedia for flights departing within the next year — book ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from DIA airport to ONT?
Most flights can be cancelled online, but every air carrier has different terms and conditions. If you do decide to cancel your flight, check out our Customer Service Portal and follow the instructions.
How do I find cheap flights from DEN to ONT that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Denver Airport to Los Angeles - Ontario Intl. Airport (ONT) flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Denver Airport to ONT?
A flight distance of just 1 300 kilometres separates Denver and Ontario. Once you’re up in the skies, you won’t get a chance to do much more than read the magazine in your seat pocket.
Which airlines fly direct from DEN to Los Angeles - Ontario Intl. Airport (ONT)?
A popular airline that flies from DEN to Ontario Airport is Southwest Airlines (WN). It offers 99 monthly flights. Operating 60 flights each month along this route, Frontier Airlines (F9) is another top pick.
Are DEN to ONT flight tickets cheaper when they're purchased at the last minute?
Late planners can sometimes find a bargain, with some of the cheapest airfares from Denver Airport to Ontario Airport surfacing a few weeks prior to the departure date. If you’d rather book ahead, Expedia compares and updates the best flight deals regularly — as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines quote prices that far in advance.
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