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Ontario, CA to Denver flights

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Q
Why book with Opodo?
  • Cheap flights with over 660 airlines
  • Compare the best deals
  • Fly to Denver for low prices
Flight DurationFlights between Ontario, CA and Denver take, on average, 2 h and 19 m minutes, but the time can vary according to other factors
Cheapest flightCheapest price for a one-way flight between Ontario, CA with Denver found by our customers in the last 72 hours
Departing AirportThe airport Ontario International is the departure airport operating flights between Ontario, CA and Denver
Arriving AirportFlights departing Ontario, CA with Denver as destination arrives at Denver International

Cheap last minute flights to Denver

Latest deals and top flight routes from Ontario, CA airports.

Departure Wed, 10 Nov Return Sun, 14 Nov
ONT Ontario, CA
DEN Denver
return from £20
Departure Mon, 22 Nov Return Wed, 24 Nov
ONT Ontario, CA
DEN Denver
return from £116
Flight route information
Find out further information on Ontario, CA and Denver to help you prepare for your trip.
Ontario, CA airports
  • ( Los Angeles Intl Airport (LAX)
    How far from city centre: 44 miles
  • ( Ontario International (ONT)
    How far from city centre: 2 miles
Denver airports
  • ( Denver International (DEN)
    How far from city centre: 19 miles
  • ( Jeffco (BJC)
    How far from city centre: 14 miles
  • ( Arapahoe Co (APA)
    How far from city centre: 14 miles
  • ( Buckley Angb (BFK)
    How far from city centre: 6 miles
K Distance: 801 miles

Search for flights from Ontario, CA to Denver

Find cheap flights from Ontario, CA to Denver with the Opodo search engine. Whether it’s on business, for a relaxing holiday or to visit loved ones, you will find all the best deals on flights from Ontario, CA with Opodo, featuring cheap flights by all the top low cost and standard airlines. By simply entering your preferences in our speedy search engine, a large selection of options will be returned from which you just need to select the best deal that works for you. We’ll do the rest! Alternatively, if you are flexible on dates or an early bird, discover the cheapest day to fly from Ontario, CA to Denver to ensure you get the best price. Find exclusive discounts by downloading the Opodo App and subscribing to our newsletter to stay in touch with the best offers on flights, hotels and more. Finally, don’t forget to book a hotel or car hire to complete your journey, all of which you will find on Opodo, your one-stop travel shop. Then just sit back and relax and enjoy your holidays!

Frequent asked questions about flights from Ontario, CA to Denver

😷 Is it safe to travel from Ontario, CA to Denver during the Covid-19 situation?
At Opodo we want to make sure that your travel plans are not affected by any cancelation as well as any possible restrictions United States may apply when travelling from Ontario, CA. Is your flight cancelled? We've got your back! With our flexible ticket guarantee you can decide if you want to book another flight - free of rebooking fee - or get a full refund!
🔍 How can I find cheap flights from Ontario, CA to Denver at Opodo?
The cheapest price for a flight from Ontario, CA to Denver is 20£. At Opodo 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 is the best time to book a flight from Ontario, CA to Denver?
The most popular months to book a trip from Ontario, CA to Denver are May, March and April, based on the searches of our customers.
📅 When is the best time to travel from Ontario, CA to Denver?
The best time of the year to go to Denver when flying from Ontario, CA depends on several preference factors like climate, seasonality and, of course, price. When it comes to popularity, May is the top 1º month to fly to Denver from Ontario, CA in terms of searches from our customer, followed by March and September. If you prefer to avoid high peaks of turism, however, and escape a crowded period, January, December and June are the months with less volume of searchs for the route Ontario, CA -  Denver.
🕑 How long does the flight take to go from Ontario, CA to Denver?
The total flight time between Ontario, CA and Denver is of around 02:19 hours on average, considering an average distance of 1,317 km, for both direct and indirect flights for the route (which may have 1 or more stops in other cities in between).
🌡️ How is the weather in Denver compared to Ontario, CA?
While in Ontario, CA the temperatures can reach an average of 36.7 ºC in summer, with precipitation levels up to 1.4 mm ,Denver's temperatures can go up to 34.63 ºC during the hot season, with 12.0 mm average of rain rate . In winter, however, weather indicators show around -17.82 ºC in Denver, compared to the -0.46 ºC average degrees reported in Ontario, CA. During the winter period, Ontario, CA can register 3.0 mm precipitation, while Denver have an average of 9.0 mm rain level.
🛄 Which airports have flights between Ontario, CA and Denver?
The main airport route flying between Ontario, CA and Denver is: Ontario International (ONT) to Denver International (DEN). This route is covered by the following airline(s):
  • Frontier Airlines.
  • United Airlines.
Which are the airlines with flights from Ontario, CA to Denver?
Airlines with direct flights departing from Ontario, CA to Denver are:
  • Frontier Airlines.
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