Frontier Airlines flight F9 3440: San Francisco - Denver

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Tue 06:55 San Francisco (SFO) I 10:42 Denver (DEN)
F9 3440 Non-stop Airbus A320neo (32N) 2:47 Effective 2026-02-10 through 2026-03-03
Wed 06:55 San Francisco (SFO) I 10:42 Denver (DEN)
F9 3440 Non-stop Airbus A321neo (32Q) 2:47 Effective 2026-02-11 through 2026-03-04
Tue,Wed,Sat 07:00 San Francisco (SFO) I 10:42 Denver (DEN)
F9 3440 Non-stop Airbus A320neo (32N) 2:42 Effective 2026-01-06 through 2026-01-10
Tue 07:00 San Francisco (SFO) I 10:36 Denver (DEN)
F9 3440 Non-stop Airbus A320neo (32N) 2:36 Operates only on 2026-01-13
Wed,Sat 07:00 San Francisco (SFO) I 10:36 Denver (DEN)
F9 3440 Non-stop Airbus A321neo (32Q) 2:36 Effective 2026-01-14 through 2026-01-17
Fri 08:48 San Francisco (SFO) I 12:28 Denver (DEN)
F9 3440 Non-stop Airbus A320 (320) 2:40 Effective 2026-02-13 through 2026-02-20
Mon,Sun 08:48 San Francisco (SFO) I 12:28 Denver (DEN)
F9 3440 Non-stop Airbus A320neo (32N) 2:40 Effective 2026-02-15 through 2026-02-23
Mon,Fri,Sun 08:48 San Francisco (SFO) I 12:28 Denver (DEN)
F9 3440 Non-stop Airbus A320neo (32N) 2:40 Effective 2026-02-27 through 2026-03-02
Thu 08:58 San Francisco (SFO) I 12:40 Denver (DEN)
F9 3440 Non-stop Airbus A320neo (32N) 2:42 Operates only on 2026-01-08
Fri 08:58 San Francisco (SFO) I 12:40 Denver (DEN)
F9 3440 Non-stop Airbus A321 (321) 2:42 Operates only on 2026-01-09
Mon,Sun 08:58 San Francisco (SFO) I 12:40 Denver (DEN)
F9 3440 Non-stop Airbus A321neo (32Q) 2:42 Effective 2026-01-11 through 2026-01-12
Fri 11:55 San Francisco (SFO) I 15:37 Denver (DEN)
F9 3440 Non-stop Airbus A321neo (32Q) 2:42 Operates only on 2026-01-16
Mon 11:55 San Francisco (SFO) I 15:37 Denver (DEN)
F9 3440 Non-stop Airbus A320neo (32N) 2:42 Operates only on 2026-01-19
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Frontier Airlines flight F9 3440:
San Francisco - Denver
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Frontier Airlines F93440
06:55
San Francisco (SFO) I

10:42
Denver (DEN)
Effective 2026-02-10 through 2026-03-03
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:47, non-stop
Airbus A320neo (32N)
Direct Flights:
Frontier Airlines F93440
06:55
San Francisco (SFO) I

10:42
Denver (DEN)
Effective 2026-02-11 through 2026-03-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:47, non-stop
Airbus A321neo (32Q)
Direct Flights:
Frontier Airlines F93440
07:00
San Francisco (SFO) I

10:42
Denver (DEN)
Effective 2026-01-06 through 2026-01-10
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:42, non-stop
Airbus A320neo (32N)
Direct Flights:
Frontier Airlines F93440
07:00
San Francisco (SFO) I

10:36
Denver (DEN)
Operates only on 2026-01-13
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:36, non-stop
Airbus A320neo (32N)
Direct Flights:
Frontier Airlines F93440
07:00
San Francisco (SFO) I

10:36
Denver (DEN)
Effective 2026-01-14 through 2026-01-17
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:36, non-stop
Airbus A321neo (32Q)
Direct Flights:
Frontier Airlines F93440
08:48
San Francisco (SFO) I

12:28
Denver (DEN)
Effective 2026-02-13 through 2026-02-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:40, non-stop
Airbus A320 (320)
Direct Flights:
Frontier Airlines F93440
08:48
San Francisco (SFO) I

12:28
Denver (DEN)
Effective 2026-02-15 through 2026-02-23
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Airbus A320neo (32N)
Direct Flights:
Frontier Airlines F93440
08:48
San Francisco (SFO) I

12:28
Denver (DEN)
Effective 2026-02-27 through 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 2:40, non-stop
Airbus A320neo (32N)
Direct Flights:
Frontier Airlines F93440
08:58
San Francisco (SFO) I

12:40
Denver (DEN)
Operates only on 2026-01-08
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:42, non-stop
Airbus A320neo (32N)
Direct Flights:
Frontier Airlines F93440
08:58
San Francisco (SFO) I

12:40
Denver (DEN)
Operates only on 2026-01-09
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:42, non-stop
Airbus A321 (321)
Direct Flights:
Frontier Airlines F93440
08:58
San Francisco (SFO) I

12:40
Denver (DEN)
Effective 2026-01-11 through 2026-01-12
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:42, non-stop
Airbus A321neo (32Q)
Direct Flights:
Frontier Airlines F93440
11:55
San Francisco (SFO) I

15:37
Denver (DEN)
Operates only on 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:42, non-stop
Airbus A321neo (32Q)
Direct Flights:
Frontier Airlines F93440
11:55
San Francisco (SFO) I

15:37
Denver (DEN)
Operates only on 2026-01-19
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:42, non-stop
Airbus A320neo (32N)
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Parallax here SFO-DEN
  • F9 3440 is a domestic flight departing from the San Francisco airport (SFO) and arriving at Denver airport (DEN).
  • The flight distance is 964 miles, or 1552 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 2:36 and 2:47.
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