Southwest Airlines flight WN 21: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sat 05:10 Ontario, Los Angeles (ONT) 4 07:20 Phoenix Sky Harbor (PHX) 4
WN 21 Non-stop Boeing 737 MAX 8 (7M8) 1:10 Effective 2025-11-22 through 2025-11-29
Sat 05:10 Ontario, Los Angeles (ONT) 4 07:20 Phoenix Sky Harbor (PHX) 4
WN 21 Non-stop Boeing 737 MAX 8 (7M8) 1:10 Effective 2025-12-20 through 2026-01-03
Sat 06:55 Baltimore (BWI) 08:00 Midway, Chicago (MDW)
WN 21 Non-stop Boeing 737 MAX 8 (7M8) 2:05 Valid until 2025-05-31
Sat 08:00 Phoenix Sky Harbor (PHX) 4 11:20 Love Field, Dallas (DAL) 1
WN 21 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Effective 2025-11-22 through 2025-11-29
Sat 08:00 Phoenix Sky Harbor (PHX) 4 11:20 Love Field, Dallas (DAL) 1
WN 21 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Effective 2025-12-20 through 2026-01-03
Sat 08:55 Midway, Chicago (MDW) 11:15 Love Field, Dallas (DAL) 1
WN 21 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Valid until 2025-05-31
Sat 09:40 Lubbock (LBB) 10:55 Love Field, Dallas (DAL) 1
WN 21 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Effective 2025-10-04 through 2025-11-01
Sat 11:35 Love Field, Dallas (DAL) 1 12:45 Houston Hobby (HOU)
WN 21 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2025-10-04 through 2025-11-01
Sat 11:55 Love Field, Dallas (DAL) 1 13:05 Houston Hobby (HOU)
WN 21 Non-stop Boeing 737 MAX 8 (7M8) 1:10 Valid until 2025-05-31
Sat 12:00 Love Field, Dallas (DAL) 1 13:15 Houston Hobby (HOU)
WN 21 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2025-11-22 through 2025-11-29
Sat 12:00 Love Field, Dallas (DAL) 1 13:15 Houston Hobby (HOU)
WN 21 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2025-12-20 through 2026-01-03
Sun 12:05 Love Field, Dallas (DAL) 1 13:20 Houston Hobby (HOU)
WN 21 Non-stop Boeing 737-700 (73W) 1:15 Operates only on 2025-08-31
Sat 12:10 Love Field, Dallas (DAL) 1 13:25 Houston Hobby (HOU)
WN 21 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Effective 2025-11-08 through 2025-11-15
Sat 12:10 Love Field, Dallas (DAL) 1 13:25 Houston Hobby (HOU)
WN 21 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Effective 2025-12-06 through 2025-12-13
Sat 12:15 Love Field, Dallas (DAL) 1 13:30 Houston Hobby (HOU)
WN 21 Non-stop Boeing 737-700 (73W) 1:15 Effective 2025-08-09 through 2025-09-27
Sun 14:00 Houston Hobby (HOU) 14:55 Corpus Christi (CRP)
WN 21 Non-stop Boeing 737-700 (73W) 0:55 Operates only on 2025-08-31
Non-Direct Flights:
Sat 05:10 Ontario, Los Angeles (ONT) 4 11:20 Love Field, Dallas (DAL) 1
WN 21 1-stop Boeing 737 MAX 8 (7M8) 4:10 Effective 2025-11-22 through 2025-11-29
Sat 05:10 Ontario, Los Angeles (ONT) 4 11:20 Love Field, Dallas (DAL) 1
WN 21 1-stop Boeing 737 MAX 8 (7M8) 4:10 Effective 2025-12-20 through 2026-01-03
Sat 06:55 Baltimore (BWI) 11:15 Love Field, Dallas (DAL) 1
WN 21 1-stop Boeing 737 MAX 8 (7M8) 5:20 Valid until 2025-05-31
Sat 08:00 Phoenix Sky Harbor (PHX) 4 13:15 Houston Hobby (HOU)
WN 21 1-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2025-11-22 through 2025-11-29
Sat 08:00 Phoenix Sky Harbor (PHX) 4 13:15 Houston Hobby (HOU)
WN 21 1-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2025-12-20 through 2026-01-03
Sat 08:55 Midway, Chicago (MDW) 13:05 Houston Hobby (HOU)
WN 21 1-stop Boeing 737 MAX 8 (7M8) 4:10 Valid until 2025-05-31
Sat 09:40 Lubbock (LBB) 12:45 Houston Hobby (HOU)
WN 21 1-stop Boeing 737-700 (Scimitar Winglets) 3:05 Effective 2025-10-04 through 2025-11-01
Sun 12:05 Love Field, Dallas (DAL) 1 14:55 Corpus Christi (CRP)
WN 21 1-stop Boeing 737-700 (73W) 2:50 Operates only on 2025-08-31
Sat 05:10 Ontario, Los Angeles (ONT) 4 13:15 Houston Hobby (HOU)
WN 21 2-stop Boeing 737 MAX 8 (7M8) 6:05 Effective 2025-11-22 through 2025-11-29
Sat 05:10 Ontario, Los Angeles (ONT) 4 13:15 Houston Hobby (HOU)
WN 21 2-stop Boeing 737 MAX 8 (7M8) 6:05 Effective 2025-12-20 through 2026-01-03
Sat 06:55 Baltimore (BWI) 13:05 Houston Hobby (HOU)
WN 21 2-stop Boeing 737 MAX 8 (7M8) 7:10 Valid until 2025-05-31
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 21: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN21
05:10
Ontario, Los Angeles (ONT) 4

07:20
Phoenix Sky Harbor (PHX) 4
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
05:10
Ontario, Los Angeles (ONT) 4

07:20
Phoenix Sky Harbor (PHX) 4
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
06:55
Baltimore (BWI)

08:00
Midway, Chicago (MDW)
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
08:00
Phoenix Sky Harbor (PHX) 4

11:20
Love Field, Dallas (DAL) 1
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
08:00
Phoenix Sky Harbor (PHX) 4

11:20
Love Field, Dallas (DAL) 1
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
08:55
Midway, Chicago (MDW)

11:15
Love Field, Dallas (DAL) 1
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
09:40
Lubbock (LBB)

10:55
Love Field, Dallas (DAL) 1
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN21
11:35
Love Field, Dallas (DAL) 1

12:45
Houston Hobby (HOU)
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN21
11:55
Love Field, Dallas (DAL) 1

13:05
Houston Hobby (HOU)
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:10, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
12:00
Love Field, Dallas (DAL) 1

13:15
Houston Hobby (HOU)
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
12:00
Love Field, Dallas (DAL) 1

13:15
Houston Hobby (HOU)
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
12:05
Love Field, Dallas (DAL) 1

13:20
Houston Hobby (HOU)
Operates only on 2025-08-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:15, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN21
12:10
Love Field, Dallas (DAL) 1

13:25
Houston Hobby (HOU)
Effective 2025-11-08 through 2025-11-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN21
12:10
Love Field, Dallas (DAL) 1

13:25
Houston Hobby (HOU)
Effective 2025-12-06 through 2025-12-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN21
12:15
Love Field, Dallas (DAL) 1

13:30
Houston Hobby (HOU)
Effective 2025-08-09 through 2025-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:15, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN21
14:00
Houston Hobby (HOU)

14:55
Corpus Christi (CRP)
Operates only on 2025-08-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 0:55, non-stop
Boeing 737-700 (73W)
Non-Direct Flights:
Southwest Airlines WN21
05:10
Ontario, Los Angeles (ONT) 4

11:20
Love Field, Dallas (DAL) 1
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:10, 1-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
05:10
Ontario, Los Angeles (ONT) 4

11:20
Love Field, Dallas (DAL) 1
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:10, 1-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
06:55
Baltimore (BWI)

11:15
Love Field, Dallas (DAL) 1
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:20, 1-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
08:00
Phoenix Sky Harbor (PHX) 4

13:15
Houston Hobby (HOU)
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:15, 1-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
08:00
Phoenix Sky Harbor (PHX) 4

13:15
Houston Hobby (HOU)
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:15, 1-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
08:55
Midway, Chicago (MDW)

13:05
Houston Hobby (HOU)
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:10, 1-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
09:40
Lubbock (LBB)

12:45
Houston Hobby (HOU)
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:05, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN21
12:05
Love Field, Dallas (DAL) 1

14:55
Corpus Christi (CRP)
Operates only on 2025-08-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:50, 1-stop
Boeing 737-700 (73W)
Southwest Airlines WN21
05:10
Ontario, Los Angeles (ONT) 4

13:15
Houston Hobby (HOU)
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 6:05, 2-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
05:10
Ontario, Los Angeles (ONT) 4

13:15
Houston Hobby (HOU)
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 6:05, 2-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN21
06:55
Baltimore (BWI)

13:05
Houston Hobby (HOU)
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 7:10, 2-stop
Boeing 737 MAX 8 (7M8)
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This flight number is listed as serving the following routes:
  • Baltimore (BWI) - Houston Hobby (HOU)
  • Baltimore (BWI) - Love Field, Dallas (DAL)
  • Baltimore (BWI) - Midway, Chicago (MDW)
  • Houston Hobby (HOU) - Corpus Christi (CRP)
  • Love Field, Dallas (DAL) - Corpus Christi (CRP)
  • Love Field, Dallas (DAL) - Houston Hobby (HOU)
  • Lubbock (LBB) - Houston Hobby (HOU)
  • Lubbock (LBB) - Love Field, Dallas (DAL)
  • Midway, Chicago (MDW) - Houston Hobby (HOU)
  • Midway, Chicago (MDW) - Love Field, Dallas (DAL)
  • Ontario, Los Angeles (ONT) - Houston Hobby (HOU)
  • Ontario, Los Angeles (ONT) - Love Field, Dallas (DAL)
  • Ontario, Los Angeles (ONT) - Phoenix Sky Harbor (PHX)
  • Phoenix Sky Harbor (PHX) - Houston Hobby (HOU)
  • Phoenix Sky Harbor (PHX) - Love Field, Dallas (DAL)
All Southwest Airlines flights
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- CACHE: False - LANG: en - IS_EU: False