Flights from Denver to Ontario

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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: 05/05/21
19:02 DEN
20:17 ONT
Denver International Airport, CO
Ontario-CA
direct
United Airlines
Return flight: 05/19/21
16:50 ONT
20:09 DEN
Ontario-CA
Denver International Airport, CO
direct
Spirit Airlines
$176
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Outbound flight: 05/05/21
08:20 DEN
14:19 ONT
Denver International Airport, CO
Ontario-CA
1 Stopover
Alaska Airlines
Return flight: 05/19/21
16:50 ONT
20:09 DEN
Ontario-CA
Denver International Airport, CO
direct
Spirit Airlines
$192
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Outbound flight: 08/28/21
13:45 DEN
15:04 ONT
Denver International Airport, CO
Ontario-CA
direct
United Airlines
Return flight: 09/11/21
00:49 ONT
04:18 DEN
Ontario-CA
Denver International Airport, CO
direct
Frontier Airlines
$232
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Outbound flight: 08/28/21
05:00 DEN
09:57 ONT
Denver International Airport, CO
Ontario-CA
1 Stopover
American Airlines
Return flight: 09/11/21
11:45 ONT
15:21 DEN
Ontario-CA
Denver International Airport, CO
direct
Frontier Airlines
$236
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Outbound flight: 07/22/21
11:15 DEN
12:33 ONT
Denver International Airport, CO
Ontario-CA
direct
United Airlines
Return flight: 08/05/21
18:05 ONT
21:22 DEN
Ontario-CA
Denver International Airport, CO
direct
United Airlines
$237
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Outbound flight: 07/05/21
09:51 DEN
11:13 ONT
Denver International Airport, CO
Ontario-CA
direct
Frontier Airlines
Return flight: 07/19/21
23:50 ONT
17:38 DEN
Ontario-CA
Denver International Airport, CO
1 Stopover
Sun Country Airlines
$250
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Outbound flight: 09/11/21
11:15 DEN
12:33 ONT
Denver International Airport, CO
Ontario-CA
direct
United Airlines
Return flight: 09/25/21
00:49 ONT
04:18 DEN
Ontario-CA
Denver International Airport, CO
direct
Frontier Airlines
$254
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Outbound flight: 08/13/21
13:45 DEN
15:04 ONT
Denver International Airport, CO
Ontario-CA
direct
United Airlines
Return flight: 08/27/21
16:53 ONT
20:18 DEN
Ontario-CA
Denver International Airport, CO
direct
Spirit Airlines
$256
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Outbound flight: 07/02/21
13:45 DEN
15:04 ONT
Denver International Airport, CO
Ontario-CA
direct
United Airlines
Return flight: 07/16/21
05:37 ONT
08:57 DEN
Ontario-CA
Denver International Airport, CO
direct
United Airlines
$257
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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
100 % of flights booked on the route from Denver to Ontario are booked with United Airlines and Alaska Airlines.
United Airlines
60 %
Alaska Airlines
40 %
Direct flights are cheaper
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.