Frontier Airlines flight F9 3731: Washington Dulles - Miami

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Fri,Sat 09:39 Washington Dulles (IAD) 12:32 Miami (MIA)
F9 3731 Non-stop Airbus A321 (321) 2:53 Effective 2026-04-03 through 2026-04-13
Sat 11:04 Washington Dulles (IAD) 13:49 Miami (MIA)
F9 3731 Non-stop Airbus A320neo (32N) 2:45 Valid until 2026-01-03
Fri 14:09 Washington Dulles (IAD) 16:54 Miami (MIA)
F9 3731 Non-stop Airbus A320neo (32N) 2:45 Valid until 2026-01-02
Mon 14:09 Washington Dulles (IAD) 16:54 Miami (MIA)
F9 3731 Non-stop Airbus A321 (321) 2:45 Valid until 2026-01-05
Mon,Fri 19:05 Washington Dulles (IAD) 21:57 Miami (MIA)
F9 3731 Non-stop Airbus A321 (321) 2:52 Effective 2026-02-23 through 2026-03-02
Fri 20:53 Washington Dulles (IAD) 23:44 Miami (MIA)
F9 3731 Non-stop Airbus A321 (321) 2:51 Effective 2026-01-23 through 2026-02-06
Fri 21:49 Washington Dulles (IAD) 00:41 Miami (MIA)
F9 3731 Non-stop Airbus A320neo (32N) 2:52 Operates only on 2026-03-06
The flight arrives 1 day after departure.
Mon,Fri 21:49 Washington Dulles (IAD) 00:41 Miami (MIA)
F9 3731 Non-stop Airbus A320neo (32N) 2:52 Effective 2026-03-13 through 2026-03-30
The flight arrives 1 day after departure.
Mon 22:38 Washington Dulles (IAD) 01:30 Miami (MIA)
F9 3731 Non-stop Airbus A320neo (32N) 2:52 Operates only on 2026-03-09
The flight arrives 1 day after departure.


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Frontier Airlines flight F9 3731:
Washington Dulles - Miami
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Frontier Airlines F93731
09:39
Washington Dulles (IAD)

12:32
Miami (MIA)
Effective 2026-04-03 through 2026-04-13
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
-
Duration: 2:53, non-stop
Airbus A321 (321)
Direct Flights:
Frontier Airlines F93731
11:04
Washington Dulles (IAD)

13:49
Miami (MIA)
Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:45, non-stop
Airbus A320neo (32N)
Direct Flights:
Frontier Airlines F93731
14:09
Washington Dulles (IAD)

16:54
Miami (MIA)
Valid until 2026-01-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:45, non-stop
Airbus A320neo (32N)
Direct Flights:
Frontier Airlines F93731
14:09
Washington Dulles (IAD)

16:54
Miami (MIA)
Valid until 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:45, non-stop
Airbus A321 (321)
Direct Flights:
Frontier Airlines F93731
19:05
Washington Dulles (IAD)

21:57
Miami (MIA)
Effective 2026-02-23 through 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:52, non-stop
Airbus A321 (321)
Direct Flights:
Frontier Airlines F93731
20:53
Washington Dulles (IAD)

23:44
Miami (MIA)
Effective 2026-01-23 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:51, non-stop
Airbus A321 (321)
Direct Flights:
Frontier Airlines F93731
21:49
Washington Dulles (IAD)

00:41(+1)
Miami (MIA)
Operates only on 2026-03-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:52, non-stop
Airbus A320neo (32N)
The flight arrives 1 day after departure.
Direct Flights:
Frontier Airlines F93731
21:49
Washington Dulles (IAD)

00:41(+1)
Miami (MIA)
Effective 2026-03-13 through 2026-03-30
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:52, non-stop
Airbus A320neo (32N)
The flight arrives 1 day after departure.
Direct Flights:
Frontier Airlines F93731
22:38
Washington Dulles (IAD)

01:30(+1)
Miami (MIA)
Operates only on 2026-03-09
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:52, non-stop
Airbus A320neo (32N)
The flight arrives 1 day after departure.
  • F9 3731 is a domestic flight departing from the Washington Dulles airport (IAD) and arriving at Miami airport (MIA).
  • The flight distance is 923 miles, or 1486 km.
  • The timezone of both the departure and the arrival airports is UTC-5 . Current time at both airports is (loading...).
  • For direct flights, the flight time varies between 2:45 and 2:53.
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