Southwest Airlines flight WN 4221: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri 05:20 Ontario, Los Angeles (ONT) 4 06:30 Phoenix Sky Harbor (PHX) 4
WN 4221 Non-stop Boeing 737-800 (73H) 1:10 Valid until 2025-06-02
Sat 05:50 Ontario, Los Angeles (ONT) 4 07:00 Phoenix Sky Harbor (PHX) 4
WN 4221 Non-stop Boeing 737 MAX 8 (7M8) 1:10 Valid until 2025-05-31
Mon,Thu,Fri,Sun 08:35 San Diego (SAN) 1 11:25 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 08:35 San Diego (SAN) 1 11:25 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-11-21 through 2025-11-28
Fri,Sun 08:35 San Diego (SAN) 1 11:25 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-12-07 through 2025-12-14
Thu 08:35 San Diego (SAN) 1 11:25 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Operates only on 2025-12-18
Mon 08:35 San Diego (SAN) 1 11:25 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Operates only on 2026-01-05
Mon-Wed 08:45 San Diego (SAN) 1 11:40 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2025-11-25 through 2025-12-01
Mon,Tue,Fri,Sun 08:45 San Diego (SAN) 1 11:40 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2025-12-19 through 2026-01-04
Fri 09:00 Phoenix Sky Harbor (PHX) 4 11:20 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (73W) 1:20 Operates only on 2025-07-04
Sun 09:15 Ontario, Los Angeles (ONT) 4 10:30 Phoenix Sky Harbor (PHX) 4
WN 4221 Non-stop Boeing 737-800 (73H) 1:15 Valid until 2025-05-18
Sun 09:15 Ontario, Los Angeles (ONT) 4 10:30 Phoenix Sky Harbor (PHX) 4
WN 4221 Non-stop Boeing 737-800 (73H) 1:15 Operates only on 2025-06-01
Tue,Wed 10:15 San Diego (SAN) 1 13:05 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-11-04 through 2025-11-12
Mon-Thu 10:15 San Diego (SAN) 1 13:05 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-11-17 through 2025-11-20
Mon-Fri 10:15 San Diego (SAN) 1 13:05 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-12-02 through 2025-12-11
Mon-Wed 10:15 San Diego (SAN) 1 13:05 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-12-15 through 2025-12-17
Wed,Thu 10:15 San Diego (SAN) 1 13:05 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2025-12-24 through 2026-01-01
Sat 11:35 El Paso (ELP) 14:05 Austin (AUS)
WN 4221 Non-stop Boeing 737-800 (73H) 1:30 Effective 2025-11-22 through 2025-11-29
Sat 11:35 El Paso (ELP) 14:05 Austin (AUS)
WN 4221 Non-stop Boeing 737-800 (73H) 1:30 Effective 2025-12-20 through 2026-01-03
Mon-Wed 12:15 El Paso (ELP) 14:50 Austin (AUS)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2025-11-25 through 2025-12-01
Mon,Tue,Fri,Sun 12:15 El Paso (ELP) 14:50 Austin (AUS)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2025-12-19 through 2026-01-04
Sat 16:25 San Diego (SAN) 1 19:10 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Effective 2025-11-08 through 2025-11-15
Sat 16:25 San Diego (SAN) 1 19:10 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Effective 2025-12-06 through 2025-12-13
Sun 17:05 San Diego (SAN) 1 19:50 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Operates only on 2025-11-30
Tue,Wed 19:25 Phoenix Sky Harbor (PHX) 4 21:40 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (73W) 1:15 Effective 2025-06-10 through 2025-07-30
Mon,Thu,Fri 21:35 Phoenix Sky Harbor (PHX) 4 23:45 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (73W) 1:10 Effective 2025-06-05 through 2025-07-03
Mon,Thu,Fri 21:35 Phoenix Sky Harbor (PHX) 4 23:45 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (73W) 1:10 Effective 2025-07-07 through 2025-08-04
Sat 21:45 Phoenix Sky Harbor (PHX) 4 23:55 El Paso (ELP)
WN 4221 Non-stop Boeing 737-700 (73W) 1:10 Effective 2025-06-07 through 2025-08-02
Mon,Thu,Fri 22:10 Las Vegas Harry Reid (LAS) 1 23:25 Los Angeles (LAX) 1
WN 4221 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2025-10-02 through 2025-10-31
Non-Direct Flights:
Mon-Wed 08:45 San Diego (SAN) 1 14:50 Austin (AUS)
WN 4221 1-stop Boeing 737-700 (Scimitar Winglets) 4:05 Effective 2025-11-25 through 2025-12-01
Mon,Tue,Fri,Sun 08:45 San Diego (SAN) 1 14:50 Austin (AUS)
WN 4221 1-stop Boeing 737-700 (Scimitar Winglets) 4:05 Effective 2025-12-19 through 2026-01-04
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 4221: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN4221
05:20
Ontario, Los Angeles (ONT) 4

06:30
Phoenix Sky Harbor (PHX) 4
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4221
05:50
Ontario, Los Angeles (ONT) 4

07:00
Phoenix Sky Harbor (PHX) 4
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN4221
08:35
San Diego (SAN) 1

11:25
El Paso (ELP)
Effective 2025-11-02 through 2025-11-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
08:35
San Diego (SAN) 1

11:25
El Paso (ELP)
Effective 2025-11-21 through 2025-11-28
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
08:35
San Diego (SAN) 1

11:25
El Paso (ELP)
Effective 2025-12-07 through 2025-12-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
08:35
San Diego (SAN) 1

11:25
El Paso (ELP)
Operates only on 2025-12-18
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
08:35
San Diego (SAN) 1

11:25
El Paso (ELP)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
08:45
San Diego (SAN) 1

11:40
El Paso (ELP)
Effective 2025-11-25 through 2025-12-01
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
08:45
San Diego (SAN) 1

11:40
El Paso (ELP)
Effective 2025-12-19 through 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
09:00
Phoenix Sky Harbor (PHX) 4

11:20
El Paso (ELP)
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN4221
09:15
Ontario, Los Angeles (ONT) 4

10:30
Phoenix Sky Harbor (PHX) 4
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:15, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4221
09:15
Ontario, Los Angeles (ONT) 4

10:30
Phoenix Sky Harbor (PHX) 4
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:15, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4221
10:15
San Diego (SAN) 1

13:05
El Paso (ELP)
Effective 2025-11-04 through 2025-11-12
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
10:15
San Diego (SAN) 1

13:05
El Paso (ELP)
Effective 2025-11-17 through 2025-11-20
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
10:15
San Diego (SAN) 1

13:05
El Paso (ELP)
Effective 2025-12-02 through 2025-12-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
10:15
San Diego (SAN) 1

13:05
El Paso (ELP)
Effective 2025-12-15 through 2025-12-17
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
10:15
San Diego (SAN) 1

13:05
El Paso (ELP)
Effective 2025-12-24 through 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
11:35
El Paso (ELP)

14:05
Austin (AUS)
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:30, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4221
11:35
El Paso (ELP)

14:05
Austin (AUS)
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:30, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN4221
12:15
El Paso (ELP)

14:50
Austin (AUS)
Effective 2025-11-25 through 2025-12-01
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
12:15
El Paso (ELP)

14:50
Austin (AUS)
Effective 2025-12-19 through 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
16:25
San Diego (SAN) 1

19:10
El Paso (ELP)
Effective 2025-11-08 through 2025-11-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
16:25
San Diego (SAN) 1

19:10
El Paso (ELP)
Effective 2025-12-06 through 2025-12-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
17:05
San Diego (SAN) 1

19:50
El Paso (ELP)
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
19:25
Phoenix Sky Harbor (PHX) 4

21:40
El Paso (ELP)
Effective 2025-06-10 through 2025-07-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:15, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN4221
21:35
Phoenix Sky Harbor (PHX) 4

23:45
El Paso (ELP)
Effective 2025-06-05 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN4221
21:35
Phoenix Sky Harbor (PHX) 4

23:45
El Paso (ELP)
Effective 2025-07-07 through 2025-08-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN4221
21:45
Phoenix Sky Harbor (PHX) 4

23:55
El Paso (ELP)
Effective 2025-06-07 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:10, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN4221
22:10
Las Vegas Harry Reid (LAS) 1

23:25
Los Angeles (LAX) 1
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN4221
08:45
San Diego (SAN) 1

14:50
Austin (AUS)
Effective 2025-11-25 through 2025-12-01
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:05, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN4221
08:45
San Diego (SAN) 1

14:50
Austin (AUS)
Effective 2025-12-19 through 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 4:05, 1-stop
Boeing 737-700 (Scimitar Winglets)
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Parallax here
This flight number is listed as serving the following routes:
  • El Paso (ELP) - Austin (AUS)
  • Las Vegas Harry Reid (LAS) - Los Angeles (LAX)
  • Ontario, Los Angeles (ONT) - Phoenix Sky Harbor (PHX)
  • Phoenix Sky Harbor (PHX) - El Paso (ELP)
  • San Diego (SAN) - Austin (AUS)
  • San Diego (SAN) - El Paso (ELP)
All Southwest Airlines flights
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