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Outbound flight: 02/13/22
11:15 DEN
12:33 ONT
Denver International Airport, CO
Ontario-CA
direct
United Airlines
Return flight: 02/27/22
08:20 ONT
11:31 DEN
Ontario-CA
Denver International Airport, CO
direct
Spirit Airlines
$240
Check
Outbound flight: 01/24/22
11:15 DEN
12:33 ONT
Denver International Airport, CO
Ontario-CA
direct
United Airlines
Return flight: 02/07/22
08:20 ONT
11:45 DEN
Ontario-CA
Denver International Airport, CO
direct
Spirit Airlines
$240
Check
Outbound flight: 02/25/22
20:00 DEN
11:19 ONT
Denver International Airport, CO
Ontario-CA
1 Stopover
Alaska Airlines
Return flight: 03/11/22
21:15 ONT
19:05 DEN
Ontario-CA
Denver International Airport, CO
1 Stopover
Alaska Airlines
$283
Check
Outbound flight: 02/25/22
07:00 DEN
22:59 ONT
Denver International Airport, CO
Ontario-CA
1 Stopover
Alaska Airlines
Return flight: 03/11/22
11:50 ONT
23:23 DEN
Ontario-CA
Denver International Airport, CO
1 Stopover
Alaska Airlines
$283
Check
Outbound flight: 02/25/22
20:00 DEN
11:19 ONT
Denver International Airport, CO
Ontario-CA
1 Stopover
Alaska Airlines
Return flight: 03/11/22
09:55 ONT
23:23 DEN
Ontario-CA
Denver International Airport, CO
1 Stopover
Alaska Airlines
$283
Check
Outbound flight: 02/25/22
07:00 DEN
22:59 ONT
Denver International Airport, CO
Ontario-CA
1 Stopover
Alaska Airlines
Return flight: 03/11/22
20:45 ONT
19:05 DEN
Ontario-CA
Denver International Airport, CO
1 Stopover
Alaska Airlines
$283
Check
Outbound flight: 11/08/21
06:00 DEN
09:36 ONT
Denver International Airport, CO
Ontario-CA
1 Stopover
Delta Air Lines
Return flight: 11/22/21
20:15 ONT
23:39 DEN
Ontario-CA
Denver International Airport, CO
direct
Delta Air Lines
$285
Check
Outbound flight: 12/26/21
11:15 DEN
12:33 ONT
Denver International Airport, CO
Ontario-CA
direct
United Airlines
Return flight: 01/09/22
08:20 ONT
11:45 DEN
Ontario-CA
Denver International Airport, CO
direct
Spirit Airlines
$289
Check
Outbound flight: 11/08/21
13:00 DEN
18:24 ONT
Denver International Airport, CO
Ontario-CA
1 Stopover
Alaska Airlines
Return flight: 11/22/21
17:40 ONT
10:15 DEN
Ontario-CA
Denver International Airport, CO
1 Stopover
Sun Country Airlines
$296
Check
Outbound flight: 12/12/21
07:55 DEN
12:02 ONT
Denver International Airport, CO
Ontario-CA
1 Stopover
United Airlines
Return flight: 12/26/21
05:37 ONT
08:57 DEN
Ontario-CA
Denver International Airport, CO
direct
United Airlines
$301
Check
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
Most travelers looking for flights on the route from Denver to Ontario decide to book flights with United Airlines.
United Airlines
60 %
Alaska Airlines
40 %
Direct flights are cheaper
On this route, direct flights are $28.00 cheaper than flights with a stopover.
non stop flight
1 stop
02h 21min
08h 25min
$351
$379
The favorite connection is non-stop
60 % of all bookings on the route Denver to Ontario are for non-stop flights.
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.