eDreams is now available in the following countries:

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

bbb
We are proud to be a BBB® Accredited Business

Explore the best deals

Discover the cheapest flights from Denver to Ontario, CA
emptyFilter
Filter by
Prices shown below were available within the past 3 days for the period specified and should not be considered the final price offered. Please note that availability and prices are subject to change.

Cheapest time to fly from Denver to Ontario, CA

Flexible with dates? We find the best price for the week of the day you select *Prices may vary after you search.
Filter by
week: Apr 7 - Apr 13
$25
$27
$29
$25
$29
$34
$44
$44
$47
$43
$42
$44
AprilMayJune

Route information

Distance: 801 miles
Denver airports
Denver International (DEN)How far from city center: 19 miles
Ontario, CA airports
Ontario International (ONT)How far from city center: 2 miles

Are you searching for flights from Denver to Ontario, CA?

Are you planning to travel to Ontario, CA for vacations, business or family visits? eDreams offers you the cheapest flights and best deals departing from Denver. With our fast search engine you will get a large selection of airfares from standard and low cost airlines worldwide and easily book your tickets for this route. If you are flexible we help you identify the cheapest day to fly to Ontario, CA and if you need to leave soon you can check our most convenient last minute fares. Read all the useful information about your next destination and proceed to the reservation, indicating your flight dates and completing your travel booking with hotels and car rental!

Frequently asked questions about flights from Denver to Ontario, CA

What are the benefits of booking flexible flight tickets?
Using the flexible flight ticket, you're guaranteed a refund or a rebooking option (without fees) in case of flight cancellations when travelling to United States. At eDreams have you covered!
For flights from Denver to Ontario, CA, how can I find the cheapest price?
The cheapest price for a flight from Denver to Ontario, CA is $36. At eDreams we use different machine learned based methodologies to find our costumers the best option available, considering airline combinations, stopovers and direct flights as well as different criteria for inbound and outbound journeys.
When booking, when is the best time to get the best prices for flights from Denver to Ontario, CA?
The most popular months to book a trip from Denver to Ontario, CA are July, May and April, based on the searches of our customers.
When is the best time to travel from Denver to Ontario, CA?
The best time of the year to visit Ontario, CA depends on lots of personal preferences, especially the price. Regarding popularity, May is the best month to fly to Ontario, CA from Denver in terms of searches from our customers, followed by July and March. If you prefer to avoid the busy season and get away from the crowds February, April and October are the months with fewer searches for Denver - Ontario, CA.
How long does the flight from Denver to Ontario, CA take?
Flight length from Denver to Ontario, CA is around 02:30 hours on average, at an average distance of 1,317 km, for flights for the route (which may have 1 or more stops in other cities in between).
How is the weather in Ontario, CA compared to Denver?
While in Denver the temperatures can reach an average of 34.63 ºC in summer, with precipitation levels up to 12 mm ,Ontario, CA's temperatures can go up to 36.7 ºC during the hot season, with 1.4 mm average of rain rate . In winter, however, weather indicators show around -0.46 ºC in Ontario, CA, compared to the -17.82 ºC average degrees reported in Denver. During the winter period, Denver can register 9 mm precipitation, while Ontario, CA have an average of 3 mm rain level.
Which airports have flights between Denver and Ontario, CA?

The main route from Denver to Ontario, CA is: Denver International (DEN) to Ontario International (ONT). The following airlines fly this route:

Frontier Airlines.

Which airlines fly from Denver to Ontario, CA?

The airlines that fly non-stop from Denver to Ontario, CA are:

  • Frontier Airlines.
  • American Airlines.
  • United Airlines.

American Airlines, stopping at Phoenix during at least 105 minutes.

Plan your trip

Alternative routesPopular Flight Routes