Frontier Airlines flights from Raleigh/Durham (RDU) to Denver (DEN).

FLIGHT SCHEDULE
Direct Flights:
Thu 16:55 Raleigh/Durham (RDU) 2 19:11 Denver (DEN) Frontier Airlines F9 2225 Non-stop Airbus A321neo (32Q) 4:16 Effective 2026-02-12 through 2026-03-05
Mon-Sat 18:43 Raleigh/Durham (RDU) 2 20:55 Denver (DEN) Frontier Airlines F9 2225 Non-stop Airbus A321neo (32Q) 4:12 Effective 2026-03-06 through 2026-03-31
Sun 19:29 Raleigh/Durham (RDU) 2 21:39 Denver (DEN) Frontier Airlines F9 2225 Non-stop Airbus A320neo (32N) 4:10 Effective 2026-01-25 through 2026-02-08
Tue-Fri 19:36 Raleigh/Durham (RDU) 2 21:49 Denver (DEN) Frontier Airlines F9 2225 Non-stop Airbus A320neo (32N) 4:13 Valid until 2026-01-02
Mon,Sun 19:36 Raleigh/Durham (RDU) 2 21:49 Denver (DEN) Frontier Airlines F9 2225 Non-stop Airbus A321neo (32Q) 4:13 Valid until 2026-01-05
Mon,Thu,Sun 19:36 Raleigh/Durham (RDU) 2 21:49 Denver (DEN) Frontier Airlines F9 2225 Non-stop Airbus A321neo (32Q) 4:13 Effective 2026-01-08 through 2026-01-12
Fri 19:36 Raleigh/Durham (RDU) 2 21:49 Denver (DEN) Frontier Airlines F9 2225 Non-stop Airbus A320neo (32N) 4:13 Operates only on 2026-01-09
Mon,Thu-Sun 19:36 Raleigh/Durham (RDU) 2 21:49 Denver (DEN) Frontier Airlines F9 2225 Non-stop Airbus A321 (321) 4:13 Effective 2026-04-02 through 2026-04-13
Sun 19:38 Raleigh/Durham (RDU) 2 21:48 Denver (DEN) Frontier Airlines F9 2225 Non-stop Airbus A320neo (32N) 4:10 Effective 2026-02-15 through 2026-03-01
Mon,Thu 19:39 Raleigh/Durham (RDU) 2 21:49 Denver (DEN) Frontier Airlines F9 2225 Non-stop Airbus A321neo (32Q) 4:10 Effective 2026-01-15 through 2026-01-19
Fri,Sun 19:39 Raleigh/Durham (RDU) 2 21:49 Denver (DEN) Frontier Airlines F9 2225 Non-stop Airbus A320neo (32N) 4:10 Effective 2026-01-16 through 2026-01-18
Fri 19:39 Raleigh/Durham (RDU) 2 21:49 Denver (DEN) Frontier Airlines F9 2225 Non-stop Airbus A321neo (32Q) 4:10 Effective 2026-01-23 through 2026-02-06
Mon 19:39 Raleigh/Durham (RDU) 2 21:49 Denver (DEN) Frontier Airlines F9 2225 Non-stop Airbus A320neo (32N) 4:10 Effective 2026-01-26 through 2026-02-09
Fri 14:24 Raleigh/Durham (RDU) 2 16:39 Denver (DEN) Frontier Airlines F9 2439 Non-stop Airbus A320neo (32N) 4:15 Effective 2026-02-13 through 2026-02-20
Fri 14:36 Raleigh/Durham (RDU) 2 16:51 Denver (DEN) Frontier Airlines F9 2439 Non-stop Airbus A320neo (32N) 4:15 Operates only on 2026-02-27
Sat 17:11 Raleigh/Durham (RDU) 2 19:27 Denver (DEN) Frontier Airlines F9 2439 Non-stop Airbus A321neo (32Q) 4:16 Effective 2026-02-14 through 2026-02-21
Mon 17:11 Raleigh/Durham (RDU) 2 19:27 Denver (DEN) Frontier Airlines F9 2439 Non-stop Airbus A320neo (32N) 4:16 Effective 2026-02-16 through 2026-02-23
Mon,Sat 17:11 Raleigh/Durham (RDU) 2 19:27 Denver (DEN) Frontier Airlines F9 2439 Non-stop Airbus A320neo (32N) 4:16 Effective 2026-02-28 through 2026-03-02
Sat 17:20 Raleigh/Durham (RDU) 2 19:33 Denver (DEN) Frontier Airlines F9 2439 Non-stop Airbus A321neo (32Q) 4:13 Valid until 2026-01-03
Sun 22:07 Raleigh/Durham (RDU) 2 00:11 Denver (DEN) Frontier Airlines F9 2439 Non-stop Airbus A320neo (32N) 4:04 Effective 2026-03-08 through 2026-03-29 The flight arrives 1 day after departure.

A domestic route departing from the Raleigh/Durham airport (RDU) and arriving at Denver airport (DEN).
The flight distance is 1433 miles, or 2305 km.
The timezone of the departure airport is UTC-5 , 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 4:04 and 4:16.

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FLIGHT SCHEDULE

Direct Flights:

Frontier Airlines F92225

16:55

Raleigh/Durham (RDU) 2

19:11

Denver (DEN)

Effective 2026-02-12 through 2026-03-05

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 4:16, non-stop
Airbus A321neo (32Q)

Direct Flights:

Frontier Airlines F92225

18:43

Raleigh/Durham (RDU) 2

20:55

Denver (DEN)

Effective 2026-03-06 through 2026-03-31

Mon

Tue

Wed

Thu

Fri

Sat

Sun
-

Duration: 4:12, non-stop
Airbus A321neo (32Q)

Direct Flights:

Frontier Airlines F92225

19:29

Raleigh/Durham (RDU) 2

21:39

Denver (DEN)

Effective 2026-01-25 through 2026-02-08

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:10, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F92225

19:36

Raleigh/Durham (RDU) 2

21:49

Denver (DEN)

Valid until 2026-01-02

Mon
-

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 4:13, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F92225

19:36

Raleigh/Durham (RDU) 2

21:49

Denver (DEN)

Valid until 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:13, non-stop
Airbus A321neo (32Q)

Direct Flights:

Frontier Airlines F92225

19:36

Raleigh/Durham (RDU) 2

21:49

Denver (DEN)

Effective 2026-01-08 through 2026-01-12

Mon

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun

Duration: 4:13, non-stop
Airbus A321neo (32Q)

Direct Flights:

Frontier Airlines F92225

19:36

Raleigh/Durham (RDU) 2

21:49

Denver (DEN)

Operates only on 2026-01-09

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 4:13, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F92225

19:36

Raleigh/Durham (RDU) 2

21:49

Denver (DEN)

Effective 2026-04-02 through 2026-04-13

Mon

Tue
-

Wed
-

Thu

Fri

Sat

Sun

Duration: 4:13, non-stop
Airbus A321 (321)

Direct Flights:

Frontier Airlines F92225

19:38

Raleigh/Durham (RDU) 2

21:48

Denver (DEN)

Effective 2026-02-15 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:10, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F92225

19:39

Raleigh/Durham (RDU) 2

21:49

Denver (DEN)

Effective 2026-01-15 through 2026-01-19

Mon

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 4:10, non-stop
Airbus A321neo (32Q)

Direct Flights:

Frontier Airlines F92225

19:39

Raleigh/Durham (RDU) 2

21:49

Denver (DEN)

Effective 2026-01-16 through 2026-01-18

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 4:10, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F92225

19:39

Raleigh/Durham (RDU) 2

21:49

Denver (DEN)

Effective 2026-01-23 through 2026-02-06

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 4:10, non-stop
Airbus A321neo (32Q)

Direct Flights:

Frontier Airlines F92225

19:39

Raleigh/Durham (RDU) 2

21:49

Denver (DEN)

Effective 2026-01-26 through 2026-02-09

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:10, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F92439

14:24

Raleigh/Durham (RDU) 2

16:39

Denver (DEN)

Effective 2026-02-13 through 2026-02-20

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 4:15, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F92439

14:36

Raleigh/Durham (RDU) 2

16:51

Denver (DEN)

Operates only on 2026-02-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 4:15, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F92439

17:11

Raleigh/Durham (RDU) 2

19:27

Denver (DEN)

Effective 2026-02-14 through 2026-02-21

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:16, non-stop
Airbus A321neo (32Q)

Direct Flights:

Frontier Airlines F92439

17:11

Raleigh/Durham (RDU) 2

19:27

Denver (DEN)

Effective 2026-02-16 through 2026-02-23

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:16, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F92439

17:11

Raleigh/Durham (RDU) 2

19:27

Denver (DEN)

Effective 2026-02-28 through 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:16, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F92439

17:20

Raleigh/Durham (RDU) 2

19:33

Denver (DEN)

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:13, non-stop
Airbus A321neo (32Q)

Direct Flights:

Frontier Airlines F92439

22:07

Raleigh/Durham (RDU) 2

00:11(+1)

Denver (DEN)

Effective 2026-03-08 through 2026-03-29

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:04, non-stop
Airbus A320neo (32N)
The flight arrives 1 day after departure.

A domestic route departing from the Raleigh/Durham airport (RDU) and arriving at Denver airport (DEN).
The flight distance is 1433 miles, or 2305 km.
The timezone of the departure airport is UTC-5 , 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 4:04 and 4:16.

All RDU-DEN flights

All Frontier Airlines flights

Return (DEN-RDU) flights

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