Frontier Airlines flights from Ontario, Los Angeles (ONT) to Denver (DEN).

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Thu 05:45 Ontario, Los Angeles (ONT) 09:10 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A321 (321) 2:25 Effective 2024-01-04 through 2024-01-11
Sat 05:45 Ontario, Los Angeles (ONT) 09:10 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A321neo (32Q) 2:25 Operates only on 2024-01-06
Sat 05:45 Ontario, Los Angeles (ONT) 09:10 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A321 (321) 2:25 Operates only on 2024-01-13
Fri 05:55 Ontario, Los Angeles (ONT) 09:20 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A320neo (32N) 2:25 Operates only on 2024-01-05
Wed 05:55 Ontario, Los Angeles (ONT) 09:20 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A321 (321) 2:25 Effective 2024-01-10 through 2024-01-17
Fri 05:55 Ontario, Los Angeles (ONT) 09:20 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A321neo (32Q) 2:25 Operates only on 2024-01-12
Mon,Tue,Sun 06:00 Ontario, Los Angeles (ONT) 09:25 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A320neo (32N) 2:25 Effective 2024-01-07 through 2024-01-16
Daily 07:15 Ontario, Los Angeles (ONT) 10:46 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A320neo (32N) 2:31 Effective 2024-04-10 through 2024-08-12
Daily 07:32 Ontario, Los Angeles (ONT) 10:55 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A320neo (32N) 2:23 Effective 2024-03-07 through 2024-04-09
Mon 13:05 Ontario, Los Angeles (ONT) 16:29 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A321neo (32Q) 2:24 Valid until 2024-01-01
Tue 14:18 Ontario, Los Angeles (ONT) 17:38 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A321neo (32Q) 2:20 Valid until 2024-01-02
Wed 17:40 Ontario, Los Angeles (ONT) 21:04 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A320neo (32N) 2:24 Effective 2024-01-24 through 2024-02-07
Sun 21:00 Ontario, Los Angeles (ONT) 00:26 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A320neo (32N) 2:26 Effective 2024-01-21 through 2024-02-11
The flight arrives 1 day after departure.
Mon,Thu,Fri 21:02 Ontario, Los Angeles (ONT) 00:28 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A320neo (32N) 2:26 Effective 2024-01-18 through 2024-02-12
The flight arrives 1 day after departure.
Daily 23:58 Ontario, Los Angeles (ONT) 03:25 Denver (DEN)
Frontier Airlines F9 1262 Non-stop Airbus A320neo (32N) 2:27 Effective 2024-02-14 through 2024-03-06
The flight arrives 1 day after departure.
Wed 05:55 Ontario, Los Angeles (ONT) 09:12 Denver (DEN)
Frontier Airlines F9 1500 Non-stop Airbus A320neo (32N) 2:17 Operates only on 2024-01-03
Mon,Tue,Sun 06:00 Ontario, Los Angeles (ONT) 09:17 Denver (DEN)
Frontier Airlines F9 1500 Non-stop Airbus A320neo (32N) 2:17 Valid until 2024-01-02
Mon 12:05 Ontario, Los Angeles (ONT) 15:22 Denver (DEN)
Frontier Airlines F9 1500 Non-stop Airbus A320neo (32N) 2:17 Operates only on 2024-01-15
Mon 13:32 Ontario, Los Angeles (ONT) 16:59 Denver (DEN)
Frontier Airlines F9 1500 Non-stop Airbus A321neo (32Q) 2:27 Operates only on 2024-01-08
Fri 13:39 Ontario, Los Angeles (ONT) 17:06 Denver (DEN)
Frontier Airlines F9 1500 Non-stop Airbus A321 (321) 2:27 Operates only on 2024-01-12
Fri 13:59 Ontario, Los Angeles (ONT) 17:26 Denver (DEN)
Frontier Airlines F9 1500 Non-stop Airbus A320neo (32N) 2:27 Operates only on 2024-01-05
Mon,Thu,Fri,Sun 14:26 Ontario, Los Angeles (ONT) 17:49 Denver (DEN)
Frontier Airlines F9 1500 Non-stop Airbus A320neo (32N) 2:23 Effective 2024-02-15 through 2024-03-04
Mon,Fri 14:51 Ontario, Los Angeles (ONT) 18:19 Denver (DEN)
Frontier Airlines F9 1500 Non-stop Airbus A320neo (32N) 2:28 Effective 2024-04-12 through 2024-08-12
Wed 15:13 Ontario, Los Angeles (ONT) 18:32 Denver (DEN)
Frontier Airlines F9 1500 Non-stop Airbus A320neo (32N) 2:19 Effective 2024-06-12 through 2024-08-07
Mon,Tue,Thu-Sun 17:40 Ontario, Los Angeles (ONT) 21:04 Denver (DEN)
Frontier Airlines F9 1500 Non-stop Airbus A320neo (32N) 2:24 Effective 2024-01-18 through 2024-02-13
Daily 21:39 Ontario, Los Angeles (ONT) 00:59 Denver (DEN)
Frontier Airlines F9 1500 Non-stop Airbus A320neo (32N) 2:20 Effective 2024-03-07 through 2024-04-09
The flight arrives 1 day after departure.
Sat 19:51 Ontario, Los Angeles (ONT) 23:22 Denver (DEN)
Frontier Airlines F9 2908 Non-stop Airbus A320neo (32N) 2:31 Effective 2024-04-13 through 2024-08-10
Wed 16:01 Ontario, Los Angeles (ONT) 19:19 Denver (DEN)
Frontier Airlines F9 3826 Non-stop Airbus A320neo (32N) 2:18 Valid until 2024-01-03
Sun 18:57 Ontario, Los Angeles (ONT) 22:22 Denver (DEN)
Frontier Airlines F9 3826 Non-stop Airbus A320neo (32N) 2:25 Operates only on 2024-01-07
Thu 19:35 Ontario, Los Angeles (ONT) 23:00 Denver (DEN)
Frontier Airlines F9 3826 Non-stop Airbus A320neo (32N) 2:25 Operates only on 2024-01-04
Thu 20:23 Ontario, Los Angeles (ONT) 23:47 Denver (DEN)
Frontier Airlines F9 3826 Non-stop Airbus A320neo (32N) 2:24 Operates only on 2024-01-11
Sun 20:31 Ontario, Los Angeles (ONT) 23:55 Denver (DEN)
Frontier Airlines F9 3826 Non-stop Airbus A320neo (32N) 2:24 Operates only on 2024-01-14
Thu,Sun 21:30 Ontario, Los Angeles (ONT) 00:59 Denver (DEN)
Frontier Airlines F9 3826 Non-stop Airbus A320neo (32N) 2:29 Effective 2024-04-11 through 2024-06-16
The flight arrives 1 day after departure.
Tue,Thu,Sun 21:30 Ontario, Los Angeles (ONT) 00:59 Denver (DEN)
Frontier Airlines F9 3826 Non-stop Airbus A320neo (32N) 2:29 Effective 2024-06-18 through 2024-08-11
The flight arrives 1 day after departure.




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Frontier Airlines flights from Ontario, Los Angeles (ONT) to Denver (DEN).
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Frontier Airlines F91262
05:45
Ontario, Los Angeles (ONT)

09:10
Denver (DEN)
Effective 2024-01-04 through 2024-01-11
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Airbus A321 (321)
Frontier Airlines F91262
05:45
Ontario, Los Angeles (ONT)

09:10
Denver (DEN)
Operates only on 2024-01-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:25, non-stop
Airbus A321neo (32Q)
Frontier Airlines F91262
05:45
Ontario, Los Angeles (ONT)

09:10
Denver (DEN)
Operates only on 2024-01-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:25, non-stop
Airbus A321 (321)
Frontier Airlines F91262
05:55
Ontario, Los Angeles (ONT)

09:20
Denver (DEN)
Operates only on 2024-01-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:25, non-stop
Airbus A320neo (32N)
Frontier Airlines F91262
05:55
Ontario, Los Angeles (ONT)

09:20
Denver (DEN)
Effective 2024-01-10 through 2024-01-17
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Airbus A321 (321)
Frontier Airlines F91262
05:55
Ontario, Los Angeles (ONT)

09:20
Denver (DEN)
Operates only on 2024-01-12
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:25, non-stop
Airbus A321neo (32Q)
Frontier Airlines F91262
06:00
Ontario, Los Angeles (ONT)

09:25
Denver (DEN)
Effective 2024-01-07 through 2024-01-16
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:25, non-stop
Airbus A320neo (32N)
Frontier Airlines F91262
07:15
Ontario, Los Angeles (ONT)

10:46
Denver (DEN)
Effective 2024-04-10 through 2024-08-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:31, non-stop
Airbus A320neo (32N)
Frontier Airlines F91262
07:32
Ontario, Los Angeles (ONT)

10:55
Denver (DEN)
Effective 2024-03-07 through 2024-04-09
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:23, non-stop
Airbus A320neo (32N)
Frontier Airlines F91262
13:05
Ontario, Los Angeles (ONT)

16:29
Denver (DEN)
Valid until 2024-01-01
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:24, non-stop
Airbus A321neo (32Q)
Frontier Airlines F91262
14:18
Ontario, Los Angeles (ONT)

17:38
Denver (DEN)
Valid until 2024-01-02
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:20, non-stop
Airbus A321neo (32Q)
Frontier Airlines F91262
17:40
Ontario, Los Angeles (ONT)

21:04
Denver (DEN)
Effective 2024-01-24 through 2024-02-07
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:24, non-stop
Airbus A320neo (32N)
Frontier Airlines F91262
21:00
Ontario, Los Angeles (ONT)

00:26(+1)
Denver (DEN)
Effective 2024-01-21 through 2024-02-11
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:26, non-stop
Airbus A320neo (32N)
The flight arrives 1 day after departure.
Frontier Airlines F91262
21:02
Ontario, Los Angeles (ONT)

00:28(+1)
Denver (DEN)
Effective 2024-01-18 through 2024-02-12
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:26, non-stop
Airbus A320neo (32N)
The flight arrives 1 day after departure.
Frontier Airlines F91262
23:58
Ontario, Los Angeles (ONT)

03:25(+1)
Denver (DEN)
Effective 2024-02-14 through 2024-03-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:27, non-stop
Airbus A320neo (32N)
The flight arrives 1 day after departure.
Frontier Airlines F91500
05:55
Ontario, Los Angeles (ONT)

09:12
Denver (DEN)
Operates only on 2024-01-03
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:17, non-stop
Airbus A320neo (32N)
Frontier Airlines F91500
06:00
Ontario, Los Angeles (ONT)

09:17
Denver (DEN)
Valid until 2024-01-02
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:17, non-stop
Airbus A320neo (32N)
Frontier Airlines F91500
12:05
Ontario, Los Angeles (ONT)

15:22
Denver (DEN)
Operates only on 2024-01-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:17, non-stop
Airbus A320neo (32N)
Frontier Airlines F91500
13:32
Ontario, Los Angeles (ONT)

16:59
Denver (DEN)
Operates only on 2024-01-08
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:27, non-stop
Airbus A321neo (32Q)
Frontier Airlines F91500
13:39
Ontario, Los Angeles (ONT)

17:06
Denver (DEN)
Operates only on 2024-01-12
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:27, non-stop
Airbus A321 (321)
Frontier Airlines F91500
13:59
Ontario, Los Angeles (ONT)

17:26
Denver (DEN)
Operates only on 2024-01-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:27, non-stop
Airbus A320neo (32N)
Frontier Airlines F91500
14:26
Ontario, Los Angeles (ONT)

17:49
Denver (DEN)
Effective 2024-02-15 through 2024-03-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:23, non-stop
Airbus A320neo (32N)
Frontier Airlines F91500
14:51
Ontario, Los Angeles (ONT)

18:19
Denver (DEN)
Effective 2024-04-12 through 2024-08-12
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:28, non-stop
Airbus A320neo (32N)
Frontier Airlines F91500
15:13
Ontario, Los Angeles (ONT)

18:32
Denver (DEN)
Effective 2024-06-12 through 2024-08-07
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:19, non-stop
Airbus A320neo (32N)
Frontier Airlines F91500
17:40
Ontario, Los Angeles (ONT)

21:04
Denver (DEN)
Effective 2024-01-18 through 2024-02-13
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 2:24, non-stop
Airbus A320neo (32N)
Frontier Airlines F91500
21:39
Ontario, Los Angeles (ONT)

00:59(+1)
Denver (DEN)
Effective 2024-03-07 through 2024-04-09
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:20, non-stop
Airbus A320neo (32N)
The flight arrives 1 day after departure.
Frontier Airlines F92908
19:51
Ontario, Los Angeles (ONT)

23:22
Denver (DEN)
Effective 2024-04-13 through 2024-08-10
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:31, non-stop
Airbus A320neo (32N)
Frontier Airlines F93826
16:01
Ontario, Los Angeles (ONT)

19:19
Denver (DEN)
Valid until 2024-01-03
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:18, non-stop
Airbus A320neo (32N)
Frontier Airlines F93826
18:57
Ontario, Los Angeles (ONT)

22:22
Denver (DEN)
Operates only on 2024-01-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:25, non-stop
Airbus A320neo (32N)
Frontier Airlines F93826
19:35
Ontario, Los Angeles (ONT)

23:00
Denver (DEN)
Operates only on 2024-01-04
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Airbus A320neo (32N)
Frontier Airlines F93826
20:23
Ontario, Los Angeles (ONT)

23:47
Denver (DEN)
Operates only on 2024-01-11
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:24, non-stop
Airbus A320neo (32N)
Frontier Airlines F93826
20:31
Ontario, Los Angeles (ONT)

23:55
Denver (DEN)
Operates only on 2024-01-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:24, non-stop
Airbus A320neo (32N)
Frontier Airlines F93826
21:30
Ontario, Los Angeles (ONT)

00:59(+1)
Denver (DEN)
Effective 2024-04-11 through 2024-06-16
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
Duration: 2:29, non-stop
Airbus A320neo (32N)
The flight arrives 1 day after departure.
Frontier Airlines F93826
21:30
Ontario, Los Angeles (ONT)

00:59(+1)
Denver (DEN)
Effective 2024-06-18 through 2024-08-11
Mon
-
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
Duration: 2:29, non-stop
Airbus A320neo (32N)
The flight arrives 1 day after departure.
  • A domestic route departing from the Ontario, Los Angeles airport (ONT) and arriving at Denver airport (DEN).
  • The flight distance is 817 miles, or 1315 km.
  • The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-7 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
  • For direct flights, the flight time varies between 2:17 and 2:31.
All ONT-DEN flights
All Frontier Airlines flights
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