Southwest Airlines flights from Phoenix Sky Harbor (PHX) to Washington Dulles (IAD).

FLIGHT SCHEDULE
Direct Flights:
Tue,Wed 09:50 Phoenix Sky Harbor (PHX) 4 17:05 Washington Dulles (IAD) Southwest Airlines WN 248 Non-stop Boeing 737-800 (73H) 4:15 Effective 2026-06-09 through 2026-07-29
Sat 08:55 Phoenix Sky Harbor (PHX) 4 14:55 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-01-10 through 2026-02-07
Mon-Fri 10:50 Phoenix Sky Harbor (PHX) 4 16:50 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 10:50 Phoenix Sky Harbor (PHX) 4 16:50 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-01-18 through 2026-01-23
Mon-Fri 10:50 Phoenix Sky Harbor (PHX) 4 16:50 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-01-26 through 2026-02-04
Tue,Wed,Sun 10:50 Phoenix Sky Harbor (PHX) 4 16:50 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-02-08 through 2026-02-11
Tue,Wed 10:50 Phoenix Sky Harbor (PHX) 4 16:50 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-02-18 through 2026-03-04
Thu,Fri,Sun 11:00 Phoenix Sky Harbor (PHX) 4 17:00 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-01-11 through 2026-01-16
Mon,Sun 11:00 Phoenix Sky Harbor (PHX) 4 17:00 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 11:00 Phoenix Sky Harbor (PHX) 4 17:00 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-02-01 through 2026-02-06
Mon,Sun 11:00 Phoenix Sky Harbor (PHX) 4 17:00 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 11:00 Phoenix Sky Harbor (PHX) 4 17:00 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-02-17 through 2026-02-23
Mon 11:00 Phoenix Sky Harbor (PHX) 4 17:00 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Operates only on 2026-03-02
Thu,Fri 12:15 Phoenix Sky Harbor (PHX) 4 18:20 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737-800 (73H) 4:05 Effective 2026-02-12 through 2026-02-13
Mon 12:15 Phoenix Sky Harbor (PHX) 4 18:20 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Operates only on 2026-02-16
Thu,Fri,Sun 12:15 Phoenix Sky Harbor (PHX) 4 18:20 Washington Dulles (IAD) Southwest Airlines WN 816 Non-stop Boeing 737-800 (73H) 4:05 Effective 2026-02-20 through 2026-03-01
Sat 07:45 Phoenix Sky Harbor (PHX) 4 15:05 Washington Dulles (IAD) Southwest Airlines WN 1016 Non-stop Boeing 737 MAX 8 (7M8) 4:20 Effective 2026-04-11 through 2026-05-30
Tue,Wed 08:35 Phoenix Sky Harbor (PHX) 4 15:50 Washington Dulles (IAD) Southwest Airlines WN 1016 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2026-04-07 through 2026-06-03
Wed,Thu 11:00 Phoenix Sky Harbor (PHX) 4 17:05 Washington Dulles (IAD) Southwest Airlines WN 1590 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Valid until 2026-01-01
Sun 11:00 Phoenix Sky Harbor (PHX) 4 17:05 Washington Dulles (IAD) Southwest Airlines WN 1590 Non-stop Boeing 737-700 (Scimitar Winglets) 4:05 Operates only on 2026-01-04
Mon 11:05 Phoenix Sky Harbor (PHX) 4 17:10 Washington Dulles (IAD) Southwest Airlines WN 1590 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Operates only on 2026-01-05
Fri 11:20 Phoenix Sky Harbor (PHX) 4 17:30 Washington Dulles (IAD) Southwest Airlines WN 1590 Non-stop Boeing 737-700 (Scimitar Winglets) 4:10 Operates only on 2026-01-02
Sat 13:00 Phoenix Sky Harbor (PHX) 4 19:05 Washington Dulles (IAD) Southwest Airlines WN 1590 Non-stop Boeing 737-800 (73H) 4:05 Valid until 2026-01-03
Sun 10:00 Phoenix Sky Harbor (PHX) 4 17:15 Washington Dulles (IAD) Southwest Airlines WN 2007 Non-stop Boeing 737-700 (Scimitar Winglets) 4:15 Operates only on 2026-05-24
Sun 10:10 Phoenix Sky Harbor (PHX) 4 17:25 Washington Dulles (IAD) Southwest Airlines WN 2007 Non-stop Boeing 737-800 (73H) 4:15 Effective 2026-04-12 through 2026-05-17
Sun 10:10 Phoenix Sky Harbor (PHX) 4 17:25 Washington Dulles (IAD) Southwest Airlines WN 2007 Non-stop Boeing 737-800 (73H) 4:15 Operates only on 2026-05-31
Sun 10:20 Phoenix Sky Harbor (PHX) 4 17:35 Washington Dulles (IAD) Southwest Airlines WN 2419 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2026-06-07 through 2026-08-02
Sat 07:45 Phoenix Sky Harbor (PHX) 4 15:05 Washington Dulles (IAD) Southwest Airlines WN 3279 Non-stop Boeing 737 MAX 8 (7M8) 4:20 Effective 2026-06-06 through 2026-08-01
Mon,Thu,Fri 10:20 Phoenix Sky Harbor (PHX) 4 17:35 Washington Dulles (IAD) Southwest Airlines WN 3279 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2026-06-04 through 2026-08-03
Sat 09:40 Phoenix Sky Harbor (PHX) 4 15:45 Washington Dulles (IAD) Southwest Airlines WN 3411 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Effective 2026-02-14 through 2026-02-28
Sat 08:55 Phoenix Sky Harbor (PHX) 4 16:15 Washington Dulles (IAD) Southwest Airlines WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 4:20 Effective 2026-08-08 through 2026-09-26
Sun 09:30 Phoenix Sky Harbor (PHX) 4 16:50 Washington Dulles (IAD) Southwest Airlines WN 3677 Non-stop Boeing 737-800 (73H) 4:20 Effective 2026-08-09 through 2026-09-27
Tue,Wed 09:50 Phoenix Sky Harbor (PHX) 4 17:05 Washington Dulles (IAD) Southwest Airlines WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2026-08-04 through 2026-09-30
Mon,Thu,Fri 10:00 Phoenix Sky Harbor (PHX) 4 17:15 Washington Dulles (IAD) Southwest Airlines WN 3677 Non-stop Boeing 737-800 (73H) 4:15 Effective 2026-08-06 through 2026-09-28
Mon,Thu,Fri 09:45 Phoenix Sky Harbor (PHX) 4 17:05 Washington Dulles (IAD) Southwest Airlines WN 3800 Non-stop Boeing 737-800 (73H) 4:20 Effective 2026-04-09 through 2026-06-01
Tue,Wed 10:10 Phoenix Sky Harbor (PHX) 4 17:20 Washington Dulles (IAD) Southwest Airlines WN 4166 Non-stop Boeing 737-800 (73H) 4:10 Effective 2026-03-10 through 2026-04-01
Sat 10:15 Phoenix Sky Harbor (PHX) 4 17:25 Washington Dulles (IAD) Southwest Airlines WN 4166 Non-stop Boeing 737 MAX 8 (7M8) 4:10 Effective 2026-03-14 through 2026-04-04
Sun 10:25 Phoenix Sky Harbor (PHX) 4 17:30 Washington Dulles (IAD) Southwest Airlines WN 4166 Non-stop Boeing 737-800 (73H) 4:05 Effective 2026-03-08 through 2026-04-05
Sat 11:15 Phoenix Sky Harbor (PHX) 4 17:25 Washington Dulles (IAD) Southwest Airlines WN 4166 Non-stop Boeing 737 MAX 8 (7M8) 4:10 Operates only on 2026-03-07
Mon,Thu,Fri 12:00 Phoenix Sky Harbor (PHX) 4 19:05 Washington Dulles (IAD) Southwest Airlines WN 4166 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Effective 2026-03-09 through 2026-04-06
Thu,Fri 12:50 Phoenix Sky Harbor (PHX) 4 18:55 Washington Dulles (IAD) Southwest Airlines WN 4166 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Effective 2026-03-05 through 2026-03-06

A domestic route departing from the Phoenix Sky Harbor airport (PHX) and arriving at Washington Dulles airport (IAD).
The flight distance is 1951 miles, or 3140 km.
The timezone of the departure airport is UTC-7 , and the timezone of the arrival airport is UTC-5 . 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 4:00 and 4:20.

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN248

09:50

Phoenix Sky Harbor (PHX) 4

17:05

Washington Dulles (IAD)

Effective 2026-06-09 through 2026-07-29

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN816

08:55

Phoenix Sky Harbor (PHX) 4

14:55

Washington Dulles (IAD)

Effective 2026-01-10 through 2026-02-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN816

10:50

Phoenix Sky Harbor (PHX) 4

16:50

Washington Dulles (IAD)

Effective 2026-01-06 through 2026-01-14

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 4:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN816

10:50

Phoenix Sky Harbor (PHX) 4

16:50

Washington Dulles (IAD)

Effective 2026-01-18 through 2026-01-23

Mon
-

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 4:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN816

10:50

Phoenix Sky Harbor (PHX) 4

16:50

Washington Dulles (IAD)

Effective 2026-01-26 through 2026-02-04

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 4:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN816

10:50

Phoenix Sky Harbor (PHX) 4

16:50

Washington Dulles (IAD)

Effective 2026-02-08 through 2026-02-11

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN816

10:50

Phoenix Sky Harbor (PHX) 4

16:50

Washington Dulles (IAD)

Effective 2026-02-18 through 2026-03-04

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN816

11:00

Phoenix Sky Harbor (PHX) 4

17:00

Washington Dulles (IAD)

Effective 2026-01-11 through 2026-01-16

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN816

11:00

Phoenix Sky Harbor (PHX) 4

17:00

Washington Dulles (IAD)

Effective 2026-01-19 through 2026-01-25

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN816

11:00

Phoenix Sky Harbor (PHX) 4

17:00

Washington Dulles (IAD)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN816

11:00

Phoenix Sky Harbor (PHX) 4

17:00

Washington Dulles (IAD)

Effective 2026-02-09 through 2026-02-15

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN816

11:00

Phoenix Sky Harbor (PHX) 4

17:00

Washington Dulles (IAD)

Effective 2026-02-17 through 2026-02-23

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN816

11:00

Phoenix Sky Harbor (PHX) 4

17:00

Washington Dulles (IAD)

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN816

12:15

Phoenix Sky Harbor (PHX) 4

18:20

Washington Dulles (IAD)

Effective 2026-02-12 through 2026-02-13

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN816

12:15

Phoenix Sky Harbor (PHX) 4

18:20

Washington Dulles (IAD)

Operates only on 2026-02-16

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN816

12:15

Phoenix Sky Harbor (PHX) 4

18:20

Washington Dulles (IAD)

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 4:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1016

07:45

Phoenix Sky Harbor (PHX) 4

15:05

Washington Dulles (IAD)

Effective 2026-04-11 through 2026-05-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:20, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1016

08:35

Phoenix Sky Harbor (PHX) 4

15:50

Washington Dulles (IAD)

Effective 2026-04-07 through 2026-06-03

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1590

11:00

Phoenix Sky Harbor (PHX) 4

17:05

Washington Dulles (IAD)

Valid until 2026-01-01

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1590

11:00

Phoenix Sky Harbor (PHX) 4

17:05

Washington Dulles (IAD)

Operates only on 2026-01-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN1590

11:05

Phoenix Sky Harbor (PHX) 4

17:10

Washington Dulles (IAD)

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1590

11:20

Phoenix Sky Harbor (PHX) 4

17:30

Washington Dulles (IAD)

Operates only on 2026-01-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 4:10, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN1590

13:00

Phoenix Sky Harbor (PHX) 4

19:05

Washington Dulles (IAD)

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN2007

10:00

Phoenix Sky Harbor (PHX) 4

17:15

Washington Dulles (IAD)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN2007

10:10

Phoenix Sky Harbor (PHX) 4

17:25

Washington Dulles (IAD)

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN2007

10:10

Phoenix Sky Harbor (PHX) 4

17:25

Washington Dulles (IAD)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN2419

10:20

Phoenix Sky Harbor (PHX) 4

17:35

Washington Dulles (IAD)

Effective 2026-06-07 through 2026-08-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3279

07:45

Phoenix Sky Harbor (PHX) 4

15:05

Washington Dulles (IAD)

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:20, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3279

10:20

Phoenix Sky Harbor (PHX) 4

17:35

Washington Dulles (IAD)

Effective 2026-06-04 through 2026-08-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3411

09:40

Phoenix Sky Harbor (PHX) 4

15:45

Washington Dulles (IAD)

Effective 2026-02-14 through 2026-02-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3677

08:55

Phoenix Sky Harbor (PHX) 4

16:15

Washington Dulles (IAD)

Effective 2026-08-08 through 2026-09-26

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:20, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3677

09:30

Phoenix Sky Harbor (PHX) 4

16:50

Washington Dulles (IAD)

Effective 2026-08-09 through 2026-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:20, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3677

09:50

Phoenix Sky Harbor (PHX) 4

17:05

Washington Dulles (IAD)

Effective 2026-08-04 through 2026-09-30

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3677

10:00

Phoenix Sky Harbor (PHX) 4

17:15

Washington Dulles (IAD)

Effective 2026-08-06 through 2026-09-28

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3800

09:45

Phoenix Sky Harbor (PHX) 4

17:05

Washington Dulles (IAD)

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:20, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4166

10:10

Phoenix Sky Harbor (PHX) 4

17:20

Washington Dulles (IAD)

Effective 2026-03-10 through 2026-04-01

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:10, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4166

10:15

Phoenix Sky Harbor (PHX) 4

17:25

Washington Dulles (IAD)

Effective 2026-03-14 through 2026-04-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4166

10:25

Phoenix Sky Harbor (PHX) 4

17:30

Washington Dulles (IAD)

Effective 2026-03-08 through 2026-04-05

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4166

11:15

Phoenix Sky Harbor (PHX) 4

17:25

Washington Dulles (IAD)

Operates only on 2026-03-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4166

12:00

Phoenix Sky Harbor (PHX) 4

19:05

Washington Dulles (IAD)

Effective 2026-03-09 through 2026-04-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4166

12:50

Phoenix Sky Harbor (PHX) 4

18:55

Washington Dulles (IAD)

Effective 2026-03-05 through 2026-03-06

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)

A domestic route departing from the Phoenix Sky Harbor airport (PHX) and arriving at Washington Dulles airport (IAD).
The flight distance is 1951 miles, or 3140 km.
The timezone of the departure airport is UTC-7 , and the timezone of the arrival airport is UTC-5 . 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 4:00 and 4:20.

All PHX-IAD flights

All Southwest Airlines flights

Return (IAD-PHX) flights

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