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

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FLIGHT SCHEDULE
Direct Flights:
Daily 07:40 Denver (DEN) 09:01 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1261 Non-stop Airbus A320neo (32N) 2:21 Effective 2025-06-12 through 2025-07-04
Daily 07:40 Denver (DEN) 09:00 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1261 Non-stop Airbus A320neo (32N) 2:20 Effective 2025-07-05 through 2025-08-18
Mon,Wed-Sun 07:51 Denver (DEN) 09:15 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1261 Non-stop Airbus A320neo (32N) 2:24 Effective 2025-05-22 through 2025-05-31
Mon,Wed-Sun 07:51 Denver (DEN) 09:12 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1261 Non-stop Airbus A320neo (32N) 2:21 Effective 2025-06-01 through 2025-06-09
Wed 08:00 Denver (DEN) 09:21 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1261 Non-stop Airbus A320neo (32N) 2:21 Operates only on 2025-06-11
Tue 09:20 Denver (DEN) 10:45 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1261 Non-stop Airbus A320neo (32N) 2:25 Operates only on 2025-05-27
Tue 09:20 Denver (DEN) 10:43 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1261 Non-stop Airbus A320neo (32N) 2:23 Effective 2025-06-03 through 2025-06-10
Thu,Fri,Sun 09:50 Denver (DEN) 11:15 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1261 Non-stop Airbus A320neo (32N) 2:25 Effective 2025-05-04 through 2025-05-11
Mon,Thu,Fri,Sun 09:50 Denver (DEN) 11:15 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1261 Non-stop Airbus A320neo (32N) 2:25 Effective 2025-05-12 through 2025-05-19
Thu 10:00 Denver (DEN) 11:26 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1261 Non-stop Airbus A320neo (32N) 2:26 Operates only on 2025-05-01
Mon,Fri 10:00 Denver (DEN) 11:26 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1261 Non-stop Airbus A321neo (32Q) 2:26 Effective 2025-05-02 through 2025-05-05
Wed 21:43 Denver (DEN) 23:08 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1499 Non-stop Airbus A321neo (32Q) 2:25 Operates only on 2025-05-07
Wed 21:43 Denver (DEN) 23:08 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1499 Non-stop Airbus A320neo (32N) 2:25 Operates only on 2025-05-14
Wed 21:43 Denver (DEN) 23:08 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1499 Non-stop Airbus A321neo (32Q) 2:25 Operates only on 2025-05-21
Mon,Thu,Fri,Sun 22:29 Denver (DEN) 23:51 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1499 Non-stop Airbus A321neo (32Q) 2:22 Effective 2025-05-22 through 2025-05-30
Mon,Thu,Sun 22:29 Denver (DEN) 23:50 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1499 Non-stop Airbus A321neo (32Q) 2:21 Effective 2025-06-01 through 2025-06-09
Fri 22:29 Denver (DEN) 23:50 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1499 Non-stop Airbus A320 (320) 2:21 Operates only on 2025-06-06
Daily 22:29 Denver (DEN) 23:50 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1499 Non-stop Airbus A320neo (32N) 2:21 Effective 2025-06-12 through 2025-08-18
Mon,Tue,Thu-Sun 22:37 Denver (DEN) 23:59 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1499 Non-stop Airbus A320neo (32N) 2:22 Valid until 2025-05-16
Sat 22:37 Denver (DEN) 23:59 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1499 Non-stop Airbus A321neo (32Q) 2:22 Operates only on 2025-05-17
Mon,Tue,Sun 22:37 Denver (DEN) 23:59 Ontario, Los Angeles (ONT)
Frontier Airlines F9 1499 Non-stop Airbus A320neo (32N) 2:22 Effective 2025-05-18 through 2025-05-20
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Frontier Airlines flights from Denver (DEN) to Ontario, Los Angeles (ONT).
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Frontier Airlines F91261
07:40
Denver (DEN)

09:01
Ontario, Los Angeles (ONT)
Effective 2025-06-12 through 2025-07-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:21, non-stop
Airbus A320neo (32N)
Frontier Airlines F91261
07:40
Denver (DEN)

09:00
Ontario, Los Angeles (ONT)
Effective 2025-07-05 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:20, non-stop
Airbus A320neo (32N)
Frontier Airlines F91261
07:51
Denver (DEN)

09:15
Ontario, Los Angeles (ONT)
Effective 2025-05-22 through 2025-05-31
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Duration: 2:24, non-stop
Airbus A320neo (32N)
Frontier Airlines F91261
07:51
Denver (DEN)

09:12
Ontario, Los Angeles (ONT)
Effective 2025-06-01 through 2025-06-09
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Duration: 2:21, non-stop
Airbus A320neo (32N)
Frontier Airlines F91261
08:00
Denver (DEN)

09:21
Ontario, Los Angeles (ONT)
Operates only on 2025-06-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:21, non-stop
Airbus A320neo (32N)
Frontier Airlines F91261
09:20
Denver (DEN)

10:45
Ontario, Los Angeles (ONT)
Operates only on 2025-05-27
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Airbus A320neo (32N)
Frontier Airlines F91261
09:20
Denver (DEN)

10:43
Ontario, Los Angeles (ONT)
Effective 2025-06-03 through 2025-06-10
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:23, non-stop
Airbus A320neo (32N)
Frontier Airlines F91261
09:50
Denver (DEN)

11:15
Ontario, Los Angeles (ONT)
Effective 2025-05-04 through 2025-05-11
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:25, non-stop
Airbus A320neo (32N)
Frontier Airlines F91261
09:50
Denver (DEN)

11:15
Ontario, Los Angeles (ONT)
Effective 2025-05-12 through 2025-05-19
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:25, non-stop
Airbus A320neo (32N)
Frontier Airlines F91261
10:00
Denver (DEN)

11:26
Ontario, Los Angeles (ONT)
Operates only on 2025-05-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:26, non-stop
Airbus A320neo (32N)
Frontier Airlines F91261
10:00
Denver (DEN)

11:26
Ontario, Los Angeles (ONT)
Effective 2025-05-02 through 2025-05-05
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:26, non-stop
Airbus A321neo (32Q)
Frontier Airlines F91499
21:43
Denver (DEN)

23:08
Ontario, Los Angeles (ONT)
Operates only on 2025-05-07
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Airbus A321neo (32Q)
Frontier Airlines F91499
21:43
Denver (DEN)

23:08
Ontario, Los Angeles (ONT)
Operates only on 2025-05-14
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Airbus A320neo (32N)
Frontier Airlines F91499
21:43
Denver (DEN)

23:08
Ontario, Los Angeles (ONT)
Operates only on 2025-05-21
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:25, non-stop
Airbus A321neo (32Q)
Frontier Airlines F91499
22:29
Denver (DEN)

23:51
Ontario, Los Angeles (ONT)
Effective 2025-05-22 through 2025-05-30
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:22, non-stop
Airbus A321neo (32Q)
Frontier Airlines F91499
22:29
Denver (DEN)

23:50
Ontario, Los Angeles (ONT)
Effective 2025-06-01 through 2025-06-09
Mon
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
Duration: 2:21, non-stop
Airbus A321neo (32Q)
Frontier Airlines F91499
22:29
Denver (DEN)

23:50
Ontario, Los Angeles (ONT)
Operates only on 2025-06-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:21, non-stop
Airbus A320 (320)
Frontier Airlines F91499
22:29
Denver (DEN)

23:50
Ontario, Los Angeles (ONT)
Effective 2025-06-12 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:21, non-stop
Airbus A320neo (32N)
Frontier Airlines F91499
22:37
Denver (DEN)

23:59
Ontario, Los Angeles (ONT)
Valid until 2025-05-16
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 2:22, non-stop
Airbus A320neo (32N)
Frontier Airlines F91499
22:37
Denver (DEN)

23:59
Ontario, Los Angeles (ONT)
Operates only on 2025-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:22, non-stop
Airbus A321neo (32Q)
Frontier Airlines F91499
22:37
Denver (DEN)

23:59
Ontario, Los Angeles (ONT)
Effective 2025-05-18 through 2025-05-20
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:22, non-stop
Airbus A320neo (32N)
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Parallax here DEN-ONT
  • A domestic route departing from the Denver airport (DEN) and arriving at Ontario, Los Angeles airport (ONT).
  • The flight distance is 817 miles, or 1315 km.
  • The timezone of the departure airport is UTC-7 , and the timezone of the arrival airport is UTC-8 . 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 2:20 and 2:26.
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