Flights from Denver to Ontario

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12+
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Outbound flight: 03/04/21
13:26 DEN
17:32 ONT
Denver International Airport, CO
Ontario-CA
1 Stopover
United Airlines
Return flight: 03/18/21
16:15 ONT
19:29 DEN
Ontario-CA
Denver International Airport, CO
direct
United Airlines
$119
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Outbound flight: 03/04/21
19:02 DEN
20:17 ONT
Denver International Airport, CO
Ontario-CA
direct
United Airlines
Return flight: 03/18/21
13:21 ONT
19:34 DEN
Ontario-CA
Denver International Airport, CO
1 Stopover
United Airlines
$119
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Outbound flight: 12/18/20
08:55 DEN
10:18 ONT
Denver International Airport, CO
Ontario-CA
direct
Frontier Airlines
Return flight: 01/03/21
06:15 ONT
11:11 DEN
Ontario-CA
Denver International Airport, CO
1 Stopover
Spirit Airlines
$139
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Outbound flight: 03/03/21
18:40 DEN
21:43 ONT
Denver International Airport, CO
Ontario-CA
1 Stopover
American Airlines
Return flight: 03/17/21
09:50 ONT
13:04 DEN
Ontario-CA
Denver International Airport, CO
direct
American Airlines
$141
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Outbound flight: 01/13/21
10:20 DEN
11:48 ONT
Denver International Airport, CO
Ontario-CA
direct
Frontier Airlines
Return flight: 01/27/21
09:05 ONT
23:01 DEN
Ontario-CA
Denver International Airport, CO
1 Stopover
Spirit Airlines
$144
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Outbound flight: 01/20/21
10:20 DEN
11:48 ONT
Denver International Airport, CO
Ontario-CA
direct
Frontier Airlines
Return flight: 02/03/21
12:33 ONT
15:53 DEN
Ontario-CA
Denver International Airport, CO
direct
Frontier Airlines
$148
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Outbound flight: 01/13/21
10:20 DEN
11:48 ONT
Denver International Airport, CO
Ontario-CA
direct
Frontier Airlines
Return flight: 01/27/21
11:29 ONT
15:04 DEN
Ontario-CA
Denver International Airport, CO
direct
Frontier Airlines
$148
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Outbound flight: 04/19/21
09:51 DEN
11:13 ONT
Denver International Airport, CO
Ontario-CA
direct
Frontier Airlines
Return flight: 05/03/21
12:07 ONT
15:37 DEN
Ontario-CA
Denver International Airport, CO
direct
Frontier Airlines
$148
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Outbound flight: 02/06/21
10:20 DEN
11:48 ONT
Denver International Airport, CO
Ontario-CA
direct
Frontier Airlines
Return flight: 02/20/21
12:33 ONT
15:53 DEN
Ontario-CA
Denver International Airport, CO
direct
Frontier Airlines
$149
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Outbound flight: 12/17/20
06:00 DEN
09:00 ONT
Denver International Airport, CO
Ontario-CA
1 Stopover
American Airlines
Return flight: 12/31/20
19:30 ONT
22:44 DEN
Ontario-CA
Denver International Airport, CO
direct
American Airlines
$172
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Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Denver to Ontario

Favorite airline: United Airlines
60 % of flights from Denver to Ontario are booked with United Airlines.
United Airlines
60 %
Alaska Airlines
40 %
Direct flights are the cheapest connection
Compared to direct flights, flights with a stopover on this route are on average 7 % more expensive.
non stop flight
1 stop
02h 21min
08h 25min
$351
$379
The favorite connection is non-stop
Direct flights are especially popular on this route. 60 % of travelers will book a direct flight.
Route
bookings
Direct flights
02h 21min, from $351
60 %
1 stopover Seattle-Tacoma International Airport, WA
08h 25min, from $379
40 %
Flight information Denver - Ontario
Alternative flight routes
Cheap direct flights
Flight details Denver - Ontario
  • Flight duration: min. 02:19 / max. 05:20
  • Distance: 1317 km
  • Flights per week: 28
  • Return flight duration: min. 02:09 / max. 06:20
Top Flight Routes
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* Prices may vary, please check the travel details given by the online travel agency before booking. Prices include taxes.