Airlines with flights from Denver to Ontario
There are five airlines with scheduled flights between DEN and ONT. Southwest, Frontier and United has non-stop flights from Denver International to Ontario International Airport and the flight time is 2 hours and 20 minutes.
There are five airlines with scheduled flights between DEN and ONT. Southwest, Frontier and United has non-stop flights from Denver International to Ontario International Airport and the flight time is 2 hours and 20 minutes. Choose airline
Direct
Non-stop
2h 20min
Direct
Non-stop
2h 21min
Direct
Non-stop
2h 22min
Via Las Vegas
3h 35min
Via Phoenix
3h 36min
Via Phoenix
3h 45min
Via Las Vegas
3h 58min
Via Salt Lake City
4h 5min
Via Sacramento
4h 25min
Via San Jose
4h 35min
Via Oakland
4h 35min
Via San Francisco
5h 7min
NEW
Via Salt Lake City
5h 23min
NEW
Via San Francisco
6h 1min
Starts 09/06
Via Albuquerque
6h 10min
Starts 04/07
Via Salt Lake City
8h 10min
Schedules
Non-stop with Southwest Airlines
-
Total flight time: 2 hours and 20 minutes
-
Low-cost airline
-
Denver is a Southwest Airlines focus city (Operating base).
-
34 flights per week
-
Boeing 737MAX 8 PassengerBoeing 737-700 Passenger (Scimitar Winglets)Boeing 737-800 (winglets) Passenger/BBJ2
DEN
Direct
ONT
W25, Jun 15 - Jun 21
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
WN1660
07:45
08:15
08:15
07:45
07:45
07:50
07:55
WN4080
10:55
----
----
10:55
10:55
----
11:35
WN3627
----
11:20
11:20
----
----
----
----
WN2949
18:45
----
----
18:45
18:45
16:25
18:30
WN189
----
17:40
17:40
----
----
----
----
WN1663
21:15
20:55
20:55
21:15
21:15
21:20
21:10
The timetable & schedule information was updated at 2026-04-21
Non-stop with Frontier Airlines
-
Total flight time: 2 hours and 21 minutes
-
Low-cost airline
-
Denver is a Frontier Airlines focus city (Operating base).
-
18 flights per week
-
Airbus A320neoAirbus A320
DEN
Direct
ONT
W25, Jun 15 - Jun 21
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
F92907
08:44
08:44
08:44
08:44
08:44
08:44
08:44
F91261
22:29
22:29
22:29
22:29
22:29
22:29
22:29
The timetable & schedule information was updated at 2026-04-21
Non-stop with United Airlines
-
Total flight time: 2 hours and 22 minutes
-
Denver is a United Airlines hub.
-
18 flights per week
-
Boeing 737-800 PassengerAirbus A320Boeing 737MAX 9 Passenger
-
Business and first class available
DEN
Direct
ONT
W25, Jun 15 - Jun 21
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
UA430
11:25
11:25
11:25
11:20
11:25
11:20
11:25
UA1656
16:05
----
16:05
16:05
16:05
----
16:05
UA2028
19:24
19:24
19:24
19:24
19:24
19:24
19:24
The timetable & schedule information was updated at 2026-04-21
Via Las Vegas with Southwest Airlines
-
Total flight time: 3h 35m - 8h 45m.
-
Low-cost airline
-
Denver is a Southwest Airlines focus city (Operating base).
-
280 flights per week
-
Boeing 737MAX 8 PassengerBoeing 737-700 Passenger (Scimitar Winglets)Boeing 737-800 (winglets) Passenger/BBJ2
DEN
Via LAS
ONT
W25, Jun 15 - Jun 21
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
WN3106
WN4179
WN4179
05:50
----
----
05:50
05:50
05:45
----
WN1651
WN209
WN209
----
----
----
----
----
----
05:55
WN2412
WN4445
WN4445
----
06:00
06:00
----
----
----
----
WN439
WN2298
WN2298
----
----
----
----
----
----
07:45
WN1559
WN2298
WN2298
----
08:00
08:00
----
----
----
----
WN2192
WN2298
WN2298
----
----
----
----
----
----
08:35
WN3289
WN2298
WN2298
08:45
----
----
08:45
08:45
----
----
WN3508
WN3845
WN3845
----
----
----
----
----
----
10:05
WN1561
WN3845
WN3845
11:00
----
----
11:00
11:00
----
----
WN2016
WN5081
WN5081
----
----
----
----
----
----
13:45
WN4461
WN1564
WN1564
14:40
----
----
14:40
14:40
----
----
WN1571
WN1564
WN1564
14:50
----
----
14:50
14:50
----
----
WN2782
WN1565
WN1565
----
----
----
----
----
----
14:55
WN1563
WN5081
WN5081
----
----
----
----
----
----
15:15
WN342
WN2015
WN2015
----
15:35
15:35
----
----
----
----
WN3333
WN2301
WN2301
----
15:45
15:45
----
----
----
----
WN4136
WN2135
WN2135
16:10
----
----
16:10
16:10
----
----
WN1563
WN1564
WN1564
16:35
----
----
16:35
16:35
----
----
WN4160
WN2135
WN2135
16:55
----
----
16:55
16:55
----
----
WN1564
WN2015
WN2015
----
17:05
17:05
----
----
----
----
WN1564
WN1565
WN1565
----
----
----
----
----
----
17:40
WN2782
WN2135
WN2135
18:10
----
----
18:10
18:10
----
----
WN1565
WN977
WN977
----
----
----
----
----
----
18:45
WN138
WN2135
WN2135
18:50
----
----
18:50
18:50
----
----
WN1565
WN2135
WN2135
19:00
----
----
19:00
19:00
----
----
WN204
WN1777
WN1777
----
----
----
----
----
19:35
----
WN1566
WN2301
WN2301
----
20:05
20:05
----
----
----
----
WN1566
WN2135
WN2135
20:35
----
----
20:35
20:35
----
----
WN1566
WN977
WN977
----
----
----
----
----
----
21:00
The timetable & schedule information was updated at 2026-04-21
Via Phoenix with American Airlines
-
Total flight time: 3h 36m - 5h 50m.
-
One World Alliance
-
124 flights per week
DEN
Via PHX
ONT
W25, Jun 15 - Jun 21
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
AA1404
AA2244
AA2244
08:07
08:07
08:07
08:07
08:07
08:07
08:07
AA1638
AA1238
AA1238
18:56
18:56
18:56
18:56
18:56
18:56
18:56
The timetable & schedule information was updated at 2026-04-21
Via Phoenix with Southwest Airlines
-
Total flight time: 3h 45m - 7h 45m.
-
Low-cost airline
-
Denver is a Southwest Airlines focus city (Operating base).
-
264 flights per week
-
Boeing 737MAX 8 PassengerBoeing 737-700 Passenger (Scimitar Winglets)Boeing 737-800 (winglets) Passenger/BBJ2
DEN
Via PHX
ONT
W25, Jun 15 - Jun 21
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
WN1675
WN957
WN957
----
----
----
----
----
06:00
----
WN1675
WN759
WN759
06:15
06:15
06:15
06:15
06:15
----
----
WN165
WN431
WN431
07:10
----
----
07:10
07:10
----
----
WN1653
WN1413
WN1413
----
----
----
----
----
----
07:50
WN3336
WN431
WN431
08:00
----
----
08:00
08:00
----
----
WN431
WN1413
WN1413
----
----
----
----
----
----
08:40
WN431
WN3313
WN3313
----
----
----
----
----
09:00
----
WN3732
WN2603
WN2603
----
09:35
09:35
----
----
----
----
WN706
WN2603
WN2603
----
10:30
10:30
----
----
----
----
WN1201
WN149
WN149
----
11:00
11:00
----
----
----
----
WN706
WN670
WN670
11:00
----
----
11:00
11:00
----
----
WN2782
WN3206
WN3206
----
15:20
15:20
----
----
----
----
WN1315
WN3206
WN3206
----
16:20
16:20
----
----
----
----
WN1733
WN2862
WN2862
----
----
----
----
----
16:50
----
WN1682
WN2862
WN2862
17:20
----
----
17:20
17:20
17:55
----
WN1683
WN2436
WN2436
----
----
----
----
----
----
18:20
WN1683
WN3313
WN3313
----
18:25
18:25
----
----
----
----
WN1683
WN2862
WN2862
19:00
----
----
19:00
19:00
18:55
----
WN4447
WN3313
WN3313
----
20:05
20:05
----
----
----
19:15
WN4447
WN1750
WN1750
20:10
----
----
20:10
20:10
----
----
WN1684
WN3313
WN3313
----
----
----
----
----
----
20:40
WN1684
WN1750
WN1750
21:10
----
----
21:10
21:10
----
----
WN1685
WN3313
WN3313
----
----
----
----
----
----
21:20
The timetable & schedule information was updated at 2026-04-21
Via Las Vegas with Frontier Airlines
-
Total flight time: 3h 58m - 6h 11m.
-
Low-cost airline
-
Denver is a Frontier Airlines focus city (Operating base).
-
28 flights per week
-
Airbus A320neoAirbus A320
DEN
Via LAS
ONT
W25, Jun 15 - Jun 21
Flight
Mon
Jun 15
Tue
Jun 16
Wed
Jun 17
Thu
Jun 18
Fri
Jun 19
Sat
Jun 20
Sun
Jun 21
F91993
F91357
F91357
10:25
10:25
10:25
10:25
10:25
10:25
10:25
F92349
F92231
F92231
16:26
16:26
16:26
16:26
16:26
16:26
16:26
The timetable & schedule information was updated at 2026-04-21
Via Salt Lake City with Delta