Cheap flights from Denver to Ontario from $29

Round-trip
1 adult
Economy
0 bags
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Sun 4/2
Sun 4/9

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Flight information for Denver to Ontario
(DEN to ONT)

Find info about flight duration, direct flights, and airports for your flight from Denver to Ontario

Best Price Found

$29

Fastest flight time

2h 10m

Direct flights

Every day

Airports in Ontario

1 airport
The best one-way flight to Ontario from Denver in the past 72 hours is $29. The best round-trip flight deal from Denver to Ontario found on momondo in the last 72 hours is $80.
The fastest flight from Denver to Ontario takes 2h 10m
Direct flights go from Denver to Ontario every day.
There is 1 airport near Ontario: Ontario (ONT)

How to get the cheapest flight ticket from Denver to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Denver to Ontario?

January. The cheapest time of year to fly to Ontario from Denver is January. Most expensive is June

What is the cheapest day to depart Denver for Ontario?

Wednesday. The cheapest day of the week is typically Wednesday. The most expensive is typically Sunday

When is the cheapest time to fly from Denver to Ontario?

in the morning. Denver to Ontario flights are approximately 20% more expensive at noon than in the morning

What is the cheapest airline that flies to Ontario from Denver?

Frontier. American Airlines, Delta, and Frontier are the most popular carriers operating from Denver to Ontario

What is the cheapest Denver to Ontario flight route?

Denver Intl - Ontario. Fly from Denver Intl to Ontario for the best Denver - Ontario flight prices

How far in advance should you book Denver to Ontario flights?

51 days before. The cheapest time to buy a flight from Denver to Ontario is approximately 51 days to departure

If you are looking to fly from Denver to Ontario, you are most likely going to fly from Denver Intl Airport to Ontario Airport, the most popular airports on that route. You may be looking for an airport near Denver Intl Airport to depart from when traveling to Ontario and Colorado Springs Airport, located in Colorado Springs is a great option. You may be looking for an airport near Ontario Airport to land at when traveling from Denver and luckily, there are options! You can try Los Angeles Airport which is located in Los Angeles, Santa Ana J. Wayne/Orange Cnty Airport which is located in Santa Ana, or Burbank Bob Hope Airport which is located in Burbank. The least expensive flight option from Denver to Ontario will typically be DEN — LAX during the month of March with an average price of $56 RT.

Denver Intl Airport (DEN) to Los Angeles Airport (LAX)$56
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Denver Intl Airport (DEN) to Ontario Airport (ONT)$77
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Denver Intl Airport (DEN) to Santa Ana J. Wayne/Orange Cnty Airport (SNA)$64
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Denver Intl Airport (DEN) to Burbank Bob Hope Airport (BUR)$87
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Denver Intl Airport (DEN) to Long Beach Municipal Airport (LGB)$199
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Colorado Springs Airport (COS) to Los Angeles Airport (LAX)$233
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Easily compare round-trip flights from Denver to Ontario

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Denver to Ontario by changing tabs
Frontier
Apr 26
DEN6:06 amDenver Intl
2h 26m
ONT8:32 amOntario
May 3
ONT1:45 amOntario
2h 16m
DEN4:01 amDenver Intl
Multiple Airlines
Apr 11
DEN12:40 pmDenver Intl
6h 07m
1 stop
ONT6:47 pmOntario
Apr 14
ONT6:02 pmOntario
9h 41m
1 stop
DEN3:43 amDenver Intl
Frontier
Apr 25
DEN6:06 amDenver Intl
2h 26m
ONT8:32 amOntario
Apr 26
ONT8:17 amOntario
2h 15m
DEN10:32 amDenver Intl
Frontier
Apr 22
DEN7:18 pmDenver Intl
2h 26m
ONT9:44 pmOntario
Apr 26
ONT1:45 amOntario
2h 16m
DEN4:01 amDenver Intl
Frontier
Apr 26
DEN7:18 pmDenver Intl
2h 26m
ONT9:44 pmOntario
Apr 29
ONT1:45 amOntario
2h 16m
DEN4:01 amDenver Intl
Frontier
Apr 18
DEN7:17 pmDenver Intl
2h 26m
ONT9:43 pmOntario
Apr 22
ONT8:17 amOntario
2h 15m
DEN10:32 amDenver Intl

Find the cheapest one-way flights from Denver to Ontario

If you're looking for one-way flights from Denver to Ontario, view some of our deals below provided by Frontier and Southwest
Frontier
Apr 8
DEN7:18 pmDenver Intl
2h 26m
ONT9:44 pmOntario
Frontier
Apr 18
DEN7:17 pmDenver Intl
2h 26m
ONT9:43 pmOntario
Multiple Airlines
Apr 5
DEN12:40 pmDenver Intl
6h 17m
1 stop
ONT6:57 pmOntario

Search last-minute flights to Ontario from Denver

Find and compare round-trip flight prices for your last-minute flight from Denver to Ontario
Frontier
Apr 6
DEN7:17 pmDenver Intl
2h 26m
ONT9:43 pmOntario
Apr 8
ONT1:45 amOntario
2h 16m
DEN4:01 amDenver Intl
Multiple Airlines
Apr 7
DEN7:17 pmDenver Intl
2h 26m
ONT9:43 pmOntario
Apr 10
ONT6:02 pmOntario
13h 01m
1 stop
DEN7:03 amDenver Intl
Frontier
Apr 4
DEN7:18 pmDenver Intl
2h 26m
ONT9:44 pmOntario
Apr 11
ONT3:15 amOntario
2h 10m
DEN5:25 amDenver Intl
Frontier
Apr 4
DEN7:18 pmDenver Intl
2h 26m
ONT9:44 pmOntario
Apr 8
ONT8:17 amOntario
2h 15m
DEN10:32 amDenver Intl
Frontier
Apr 3
DEN6:08 amDenver Intl
2h 27m
ONT8:35 amOntario
Apr 6
ONT8:22 amOntario
2h 15m
DEN10:37 amDenver Intl
Multiple Airlines
Apr 3
DEN6:08 amDenver Intl
2h 27m
ONT8:35 amOntario
Apr 6
ONT6:22 pmOntario
12h 41m
1 stop
DEN7:03 amDenver Intl

Best airlines flying from Denver to Ontario

Compare and see reviews for airlines that fly from Denver to Ontario with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $61Free CancellationRating
6.1
829 reviews
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Spirit AirlinesPriceFrom $108Free CancellationRating
6.3
1,880 reviews
Search Spirit Airlines flights
DeltaPriceFrom $109Free CancellationRating
7.8
824 reviews
Search Delta flights
United AirlinesPriceFrom $119Free CancellationRating
7.2
1,736 reviews
Search United Airlines flights
American AirlinesPriceFrom $186Free CancellationRating
7.2
2,055 reviews
Search American Airlines flights
  • United Airlines Flights From Denver to Ontario

    The lowest priced United Airlines flight from Denver to Ontario from the last 72 hours was $119. Generally, United Airlines has 14 flights on this route every week with an average price of $300. United Airlines is rated 7.2/10 by our users.

  • Frontier Flights From Denver to Ontario

    Another popular option for Denver to Ontario flights is Frontier (6.1/10, 829 ratings). Frontier flies from Denver to Ontario around 12 times per week, with deals starting from $61 round-trip and rising to an average price of around $155.


Frontier flights from Denver to Ontario

Our best Frontier deals on Denver to Ontario flight tickets
Frontier
Apr 26
DEN6:06 amDenver Intl
2h 26m
ONT8:32 amOntario
May 3
ONT1:45 amOntario
2h 16m
DEN4:01 amDenver Intl
Frontier
Apr 25
DEN6:06 amDenver Intl
2h 26m
ONT8:32 amOntario
Apr 26
ONT8:17 amOntario
2h 15m
DEN10:32 amDenver Intl
Frontier
Apr 22
DEN7:18 pmDenver Intl
2h 26m
ONT9:44 pmOntario
Apr 26
ONT1:45 amOntario
2h 16m
DEN4:01 amDenver Intl

  • How far is Denver Intl to Ontario by plane?

    Denver Intl and Ontario are 800.5 mi apart from one another. In terms of flight time, this usually takes a little over 2h 22m.


Alternative routes for Denver to Ontario

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Denver to Los Angeles Flights
Fastest flight time2h 25m
Cheapest price$56
Denver to San Francisco Flights
Fastest flight time2h 40m
Cheapest price$89
Denver to San Diego Flights
Fastest flight time2h 20m
Cheapest price$75
Denver to Santa Ana Flights
Fastest flight time2h 24m
Cheapest price$64
Denver to Burbank Flights
Fastest flight time2h 23m
Cheapest price$87
Denver to Oakland, California Flights
Fastest flight time4h 35m
Cheapest price$66
Denver to Sacramento Flights
Fastest flight time2h 33m
Cheapest price$82
Denver to Reno Flights
Fastest flight time2h 21m
Cheapest price$106
Denver to San Jose Flights
Fastest flight time2h 34m
Cheapest price$157
Denver to Palm Springs Flights
Fastest flight time2h 11m
Cheapest price$232
Denver to Santa Barbara Flights
Fastest flight time2h 34m
Cheapest price$222
Denver to Fresno Flights
Fastest flight time2h 21m
Cheapest price$87

Similar Denver to Ontario flights

Flexible with your destination? Broaden your search and find flights similar to your Denver to Ontario route

Why use momondo?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Denver.

Yes. momondo enables you to select and highlight flights to Ontario from Denver with this policy.


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