All airlines flying from Ontario, Los Angeles (ONT) to Denver (DEN).
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| FLIGHT SCHEDULE |
|---|
| Direct Flights: |
| Sun
11:40
Ontario, Los Angeles (ONT) 4
14:55
Denver (DEN) Southwest Airlines WN 3303 Non-stop Boeing 737-700 (Scimitar Winglets) 2:15 Effective 2026-04-12 through 2026-05-17 |
| Sun
11:40
Ontario, Los Angeles (ONT) 4
14:55
Denver (DEN) Southwest Airlines WN 3303 Non-stop Boeing 737-700 (Scimitar Winglets) 2:15 Operates only on 2026-05-31 |
| Mon,Thu,Fri
12:50
Ontario, Los Angeles (ONT) 4
16:00
Denver (DEN) Southwest Airlines WN 3303 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Effective 2026-04-09 through 2026-06-01 |
| Sat
13:20
Ontario, Los Angeles (ONT) 4
16:40
Denver (DEN) Southwest Airlines WN 3303 Non-stop Boeing 737-800 (73H) 2:20 Effective 2026-04-11 through 2026-05-30 |
| Tue,Wed
13:55
Ontario, Los Angeles (ONT) 4
17:10
Denver (DEN) Southwest Airlines WN 3303 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-04-07 through 2026-06-03 |
| Sun
06:35
Ontario, Los Angeles (ONT) 4
09:55
Denver (DEN) Southwest Airlines WN 3539 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Effective 2026-08-09 through 2026-09-27 |
| Sat
10:25
Ontario, Los Angeles (ONT) 4
13:35
Denver (DEN) Southwest Airlines WN 3612 Non-stop Boeing 737-700 (Scimitar Winglets) 2:10 Effective 2026-03-07 through 2026-04-04 |
| Sun
13:50
Ontario, Los Angeles (ONT) 4
17:05
Denver (DEN) Southwest Airlines WN 3653 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Operates only on 2026-05-24 |
| Mon,Thu,Fri
15:00
Ontario, Los Angeles (ONT) 4
18:15
Denver (DEN) Southwest Airlines WN 3653 Non-stop Boeing 737-700 (Scimitar Winglets) 2:15 Effective 2026-04-09 through 2026-06-01 |
| Sun
15:00
Ontario, Los Angeles (ONT) 4
18:15
Denver (DEN) Southwest Airlines WN 3653 Non-stop Boeing 737-800 (73H) 2:15 Effective 2026-04-12 through 2026-05-17 |
| Sun
15:00
Ontario, Los Angeles (ONT) 4
18:15
Denver (DEN) Southwest Airlines WN 3653 Non-stop Boeing 737-800 (73H) 2:15 Operates only on 2026-05-31 |
| Sat
16:30
Ontario, Los Angeles (ONT) 4
19:40
Denver (DEN) Southwest Airlines WN 3724 Non-stop Boeing 737-800 (73H) 2:10 Valid until 2026-01-03 |
| Mon
16:15
Ontario, Los Angeles (ONT) 4
19:25
Denver (DEN) Southwest Airlines WN 3978 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Operates only on 2026-01-05 |
| Mon,Thu,Fri
05:50
Ontario, Los Angeles (ONT) 4
09:00
Denver (DEN) Southwest Airlines WN 4129 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Effective 2026-03-05 through 2026-04-06 |
| Sat,Sun
06:25
Ontario, Los Angeles (ONT) 4
09:40
Denver (DEN) Southwest Airlines WN 4129 Non-stop Boeing 737-800 (73H) 2:15 Effective 2026-03-07 through 2026-04-05 |
| Tue,Wed
06:25
Ontario, Los Angeles (ONT) 4
09:40
Denver (DEN) Southwest Airlines WN 4129 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-03-10 through 2026-04-01 |
| Mon,Thu,Fri
08:25
Ontario, Los Angeles (ONT) 4
11:40
Denver (DEN) Southwest Airlines WN 4132 Non-stop Boeing 737-700 (Scimitar Winglets) 2:15 Effective 2026-03-05 through 2026-04-06 |
| Wed,Thu
14:50
Ontario, Los Angeles (ONT) 4
18:00
Denver (DEN) Southwest Airlines WN 4400 Non-stop Boeing 737-700 (73W) 2:10 Valid until 2026-01-01 |
| Sun
11:35
Ontario, Los Angeles (ONT) 4
14:50
Denver (DEN) Southwest Airlines WN 4671 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-03-08 through 2026-04-05 |
| Mon,Thu,Fri
13:10
Ontario, Los Angeles (ONT) 4
16:20
Denver (DEN) Southwest Airlines WN 4671 Non-stop Boeing 737 MAX 8 (7M8) 2:10 Effective 2026-03-05 through 2026-04-06 |
| Sat
09:20
Ontario, Los Angeles (ONT) 4
12:30
Denver (DEN) Southwest Airlines WN 5084 Non-stop Boeing 737-700 (Scimitar Winglets) 2:10 Effective 2026-08-08 through 2026-09-26 |
| Non-Direct Flights: |
| Sun
14:35
Ontario, Los Angeles (ONT) 4
19:15
Denver (DEN) Southwest Airlines WN 300 1-stop Boeing 737-700 (Scimitar Winglets) 3:40 Effective 2026-06-07 through 2026-08-02 |
| Mon,Thu,Fri
15:40
Ontario, Los Angeles (ONT) 4
21:00
Denver (DEN) Southwest Airlines WN 670 1-stop Boeing 737-700 (Scimitar Winglets) 4:20 Effective 2026-06-04 through 2026-08-03 |
| Sat
08:30
Ontario, Los Angeles (ONT) 4
13:50
Denver (DEN) Southwest Airlines WN 1368 1-stop Boeing 737-700 (Scimitar Winglets) 4:20 Effective 2026-01-10 through 2026-02-07 |
| Mon,Thu,Fri
05:30
Ontario, Los Angeles (ONT) 4
10:10
Denver (DEN) Southwest Airlines WN 1695 1-stop Boeing 737 MAX 8 (7M8) 3:40 Effective 2026-04-09 through 2026-06-01 |
| Mon
17:55
Ontario, Los Angeles (ONT) 4
23:25
Denver (DEN) Southwest Airlines WN 2011 1-stop Boeing 737 MAX 8 (7M8) 4:30 Operates only on 2026-01-05 |
| Mon,Thu,Fri
06:15
Ontario, Los Angeles (ONT) 4
11:45
Denver (DEN) Southwest Airlines WN 3042 1-stop Boeing 737 MAX 8 (7M8) 4:30 Effective 2026-06-04 through 2026-08-03 |
| Mon,Tue,Fri,Sun
06:20
Ontario, Los Angeles (ONT) 4
11:50
Denver (DEN) Southwest Airlines WN 3047 1-stop Boeing 737 MAX 8 (7M8) 4:30 Valid until 2026-01-04 |
| Sun
12:50
Ontario, Los Angeles (ONT) 4
18:10
Denver (DEN) Southwest Airlines WN 4479 1-stop Boeing 737-700 (Scimitar Winglets) 4:20 Effective 2026-03-08 through 2026-04-05 |
| Direct Codeshare Flights: |
| Mon,Thu,Fri,Sun
06:00
Ontario, Los Angeles (ONT)
09:26
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A320 (320) 2:26 Effective 2026-01-08 through 2026-01-12 Codeshare flight, operated by Frontier Airlines.(F9) |
| Fri
06:00
Ontario, Los Angeles (ONT)
09:20
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A320 (320) 2:20 Effective 2026-02-13 through 2026-02-27 Codeshare flight, operated by Frontier Airlines.(F9) |
| Sat
06:00
Ontario, Los Angeles (ONT)
09:20
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A321 (321) 2:20 Effective 2026-02-14 through 2026-02-28 Codeshare flight, operated by Frontier Airlines.(F9) |
| Daily
06:00
Ontario, Los Angeles (ONT)
09:26
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A321 (321) 2:26 Effective 2026-04-01 through 2026-04-13 Codeshare flight, operated by Frontier Airlines.(F9) |
| Thu
06:05
Ontario, Los Angeles (ONT)
09:25
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A320 (320) 2:20 Effective 2026-02-12 through 2026-03-05 Codeshare flight, operated by Frontier Airlines.(F9) |
| Thu
06:10
Ontario, Los Angeles (ONT)
09:30
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A321 (321) 2:20 Operates only on 2026-01-15 Codeshare flight, operated by Frontier Airlines.(F9) |
| Mon,Fri,Sun
06:10
Ontario, Los Angeles (ONT)
09:30
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A320 (320) 2:20 Effective 2026-01-16 through 2026-01-19 Codeshare flight, operated by Frontier Airlines.(F9) |
| Mon,Sun
06:10
Ontario, Los Angeles (ONT)
09:30
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A320 (320) 2:20 Effective 2026-02-15 through 2026-03-02 Codeshare flight, operated by Frontier Airlines.(F9) |
| Daily
06:15
Ontario, Los Angeles (ONT)
09:35
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A320 (320) 2:20 Effective 2026-03-06 through 2026-03-31 Codeshare flight, operated by Frontier Airlines.(F9) |
| Mon,Thu
06:20
Ontario, Los Angeles (ONT)
09:40
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A321 (321) 2:20 Effective 2026-01-22 through 2026-02-09 Codeshare flight, operated by Frontier Airlines.(F9) |
| Fri,Sun
06:20
Ontario, Los Angeles (ONT)
09:40
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A320 (320) 2:20 Effective 2026-01-23 through 2026-02-08 Codeshare flight, operated by Frontier Airlines.(F9) |
| Mon,Tue,Thu,Sat,Sun
06:45
Ontario, Los Angeles (ONT)
10:06
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A321 (321) 2:21 Valid until 2026-01-04 Codeshare flight, operated by Frontier Airlines.(F9) |
| Mon,Wed,Fri
06:45
Ontario, Los Angeles (ONT)
10:06
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A320 (320) 2:21 Valid until 2026-01-05 Codeshare flight, operated by Frontier Airlines.(F9) |
| Tue
07:00
Ontario, Los Angeles (ONT)
10:22
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A321 (321) 2:22 Operates only on 2026-01-06 Codeshare flight, operated by Frontier Airlines.(F9) |
| Wed,Sat
07:00
Ontario, Los Angeles (ONT)
10:22
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A320 (320) 2:22 Effective 2026-01-07 through 2026-01-10 Codeshare flight, operated by Frontier Airlines.(F9) |
| Tue
07:15
Ontario, Los Angeles (ONT)
10:40
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A321 (321) 2:25 Effective 2026-01-13 through 2026-01-20 Codeshare flight, operated by Frontier Airlines.(F9) |
| Wed,Sat
07:15
Ontario, Los Angeles (ONT)
10:40
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A320 (320) 2:25 Effective 2026-01-14 through 2026-01-24 Codeshare flight, operated by Frontier Airlines.(F9) |
| Tue,Wed,Sat
07:15
Ontario, Los Angeles (ONT)
10:40
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A320 (320) 2:25 Effective 2026-01-27 through 2026-02-07 Codeshare flight, operated by Frontier Airlines.(F9) |
| Tue,Wed
07:30
Ontario, Los Angeles (ONT)
10:55
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A320 (320) 2:25 Effective 2026-02-10 through 2026-02-11 Codeshare flight, operated by Frontier Airlines.(F9) |
| Tue
07:30
Ontario, Los Angeles (ONT)
10:55
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A321 (321) 2:25 Effective 2026-02-17 through 2026-03-03 Codeshare flight, operated by Frontier Airlines.(F9) |
| Wed
07:30
Ontario, Los Angeles (ONT)
10:55
Denver (DEN) Volaris Y4 2187 Non-stop Airbus A320 (320) 2:25 Effective 2026-02-18 through 2026-03-04 Codeshare flight, operated by Frontier Airlines.(F9) |
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Parallax here ONT-DEN
- 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 2:10 and 2:26.
