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 24min
Direct
Non-stop
2h 20min
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
Via Albuquerque
6h 10min
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).
-
27 flights per week
-
Boeing 737MAX 8 PassengerBoeing 737-800 (winglets) Passenger/BBJ2Boeing 737-700 Passenger (Scimitar Winglets)
DEN
Direct
ONT
W32, Aug 03 - Aug 09
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
WN1660
07:45
----
----
----
----
----
----
WN4794
----
09:00
09:00
----
----
----
08:45
WN1596
----
13:05
13:05
09:05
09:05
----
12:55
WN3265
----
----
----
----
----
09:05
----
WN4080
10:55
----
----
----
----
----
----
WN2050
----
----
----
12:45
12:45
----
----
WN3959
----
----
----
----
----
15:05
----
WN4773
----
----
----
17:50
17:50
----
----
WN3775
----
----
----
----
----
----
18:05
WN2949
18:45
----
----
----
----
----
----
WN4341
----
----
----
----
----
19:30
----
WN1598
----
----
----
20:50
20:50
----
20:40
WN141
----
20:40
----
----
----
----
----
WN118
----
----
20:40
----
----
----
----
WN1663
21:15
----
----
----
----
----
----
The timetable & schedule information was updated at 2026-04-21
Non-stop with Frontier Airlines
-
Total flight time: 2 hours and 24 minutes
-
Low-cost airline
-
Denver is a Frontier Airlines focus city (Operating base).
-
14 flights per week
-
Airbus A320neo
DEN
Direct
ONT
W32, Aug 03 - Aug 09
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
F92907
08:45
08:45
08:45
08:45
08:45
08:45
08:45
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 20 minutes
-
Denver is a United Airlines hub.
-
14 flights per week
-
Boeing 737-800 PassengerBoeing 737MAX 8 Passenger
-
Business and first class available
DEN
Direct
ONT
W32, Aug 03 - Aug 09
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
UA430
11:25
11:25
11:25
11:25
11:25
11:25
11:25
UA2028
19:20
19:20
19:20
19:20
19:20
19:20
19:20
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 737-800 (winglets) Passenger/BBJ2Boeing 737-700 Passenger (Scimitar Winglets)
DEN
Via LAS
ONT
W32, Aug 03 - Aug 09
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
WN1523
WN1440
WN1440
----
----
----
----
----
05:45
----
WN3106
WN4179
WN4179
05:50
----
----
----
----
----
----
WN208
WN278
WN278
----
----
----
06:00
06:00
----
----
WN1523
WN159
WN159
----
----
----
----
----
----
06:05
WN1525
WN955
WN955
----
----
----
----
----
----
07:35
WN198
WN261
WN261
----
----
----
08:05
08:05
----
----
WN164
WN955
WN955
----
----
----
----
----
----
08:35
WN3289
WN2298
WN2298
08:45
----
----
----
----
----
----
WN1708
WN4923
WN4923
----
09:00
09:00
----
----
----
----
WN344
WN3609
WN3609
----
----
----
09:00
09:00
----
----
WN784
WN955
WN955
----
09:05
09:05
----
----
----
----
WN1220
WN766
WN766
----
----
----
----
----
09:10
----
WN1526
WN3609
WN3609
----
----
----
10:30
10:30
----
----
WN1526
WN766
WN766
----
----
----
----
----
10:55
----
WN1561
WN3845
WN3845
11:00
----
----
----
----
----
----
WN1241
WN3609
WN3609
----
----
----
12:40
12:40
----
----
WN178
WN36
WN36
----
----
----
13:00
13:00
----
----
WN1527
WN4923
WN4923
----
13:15
13:15
----
----
----
----
WN1527
WN4733
WN4733
----
----
----
----
----
----
13:20
WN921
WN2956
WN2956
----
----
----
----
----
----
14:15
WN1771
WN2956
WN2956
----
----
----
----
----
----
14:30
WN4461
WN1564
WN1564
14:40
----
----
----
----
----
----
WN1571
WN1564
WN1564
14:50
----
----
----
----
----
----
WN3622
WN4733
WN4733
----
----
----
14:55
14:55
----
----
WN1541
WN2956
WN2956
----
----
----
----
----
----
15:00
WN4365
WN2239
WN2239
----
15:30
15:30
----
----
----
----
WN1525
WN2239
WN2239
----
15:50
15:50
----
----
----
----
WN403
WN4733
WN4733
----
----
----
16:05
16:05
----
----
WN4136
WN2135
WN2135
16:10
----
----
----
----
----
----
WN1545
WN3609
WN3609
----
----
----
----
----
16:10
----
WN2455
WN2956
WN2956
----
----
----
----
----
----
16:15
WN1563
WN1564
WN1564
16:35
----
----
----
----
----
----
WN1528
WN36
WN36
----
----
----
16:40
16:40
----
----
WN4160
WN2135
WN2135
16:55
----
----
----
----
----
----
WN2782
WN2135
WN2135
18:10
----
----
----
----
----
----
WN1528
WN2239
WN2239
----
----
----
----
----
----
18:15
WN138
WN2135
WN2135
18:50
----
----
----
----
----
----
WN1565
WN2135
WN2135
19:00
----
----
----
----
----
----
WN1529
WN4733
WN4733
----
----
----
19:00
19:00
----
----
WN1566
WN2135
WN2135
20:35
----
----
----
----
----
----
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
W32, Aug 03 - Aug 09
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
AA1404
AA2244
AA2244
07:13
08:05
----
----
----
----
----
AA1404
AA2661
AA2661
----
----
08:29
08:29
08:29
08:29
08:29
AA1638
AA1238
AA1238
18:56
18:56
----
----
----
----
----
AA2602
AA1238
AA1238
----
----
----
18:59
----
----
18:59
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 737-800 (winglets) Passenger/BBJ2Boeing 737-700 Passenger (Scimitar Winglets)
DEN
Via PHX
ONT
W32, Aug 03 - Aug 09
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
WN1625
WN853
WN853
----
----
----
----
----
06:10
----
WN1675
WN759
WN759
06:15
----
----
----
----
----
----
WN1625
WN3236
WN3236
----
06:15
06:15
----
----
----
06:20
WN165
WN431
WN431
07:10
----
----
----
----
----
----
WN399
WN3236
WN3236
----
07:20
07:20
----
----
----
----
WN399
WN3450
WN3450
----
----
----
----
----
----
08:00
WN3336
WN431
WN431
08:00
----
----
----
----
----
----
WN644
WN239
WN239
----
----
----
08:10
08:10
----
----
WN468
WN692
WN692
----
09:00
09:00
----
----
----
----
WN4359
WN4113
WN4113
----
----
----
----
----
09:05
----
WN281
WN239
WN239
----
----
----
09:10
09:10
----
----
WN1708
WN982
WN982
----
----
----
09:45
09:45
----
----
WN962
WN692
WN692
----
10:15
10:15
----
----
----
----
WN225
WN4113
WN4113
----
----
----
----
----
10:25
11:40
WN706
WN670
WN670
11:00
----
----
----
----
----
----
WN1089
WN4455
WN4455
----
----
----
----
----
12:00
----
WN310
WN982
WN982
----
----
----
12:05
12:05
----
----
WN1629
WN4113
WN4113
----
----
----
----
----
12:25
12:45
WN1629
WN3185
WN3185
----
12:50
12:50
----
----
----
----
WN1949
WN1516
WN1516
----
14:10
14:10
----
----
----
----
WN983
WN1516
WN1516
----
14:40
14:40
----
----
----
----
WN1629
WN3904
WN3904
----
----
----
16:15
16:15
----
----
WN121
WN1516
WN1516
----
17:10
17:10
----
----
----
----
WN1682
WN2862
WN2862
17:20
----
----
----
----
----
----
WN1634
WN3904
WN3904
----
----
----
17:30
17:30
----
----
WN121
WN3238
WN3238
----
----
----
----
----
----
18:35
WN1683
WN2862
WN2862
19:00
----
----
----
----
----
----
WN1637
WN4113
WN4113
----
----
----
19:05
19:05
----
----
WN4447
WN1750
WN1750
20:10
----
----
----
----
----
----
WN1684
WN1750
WN1750
21:10
----
----
----
----
----
----
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 A320neo
DEN
Via LAS
ONT
W32, Aug 03 - Aug 09
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
F91993
F91357
F91357
10:25
10:25
10:25
10:25
10:25
10:25
10:25
The timetable & schedule information was updated at 2026-04-21
Via Salt Lake City with Delta