Southwest Airlines flight WN 3521: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Fri 07:30 Burbank (BUR) 13:25 Midway, Chicago (MDW)
WN 3521 Non-stop Boeing 737-700 (73W) 3:55 Operates only on 2025-07-04
Sun 09:10 Tampa (TPA) 10:55 Midway, Chicago (MDW)
WN 3521 Non-stop Boeing 737-800 (73H) 2:45 Valid until 2025-05-18
Sun 09:10 Tampa (TPA) 10:55 Midway, Chicago (MDW)
WN 3521 Non-stop Boeing 737-800 (73H) 2:45 Operates only on 2025-06-01
Mon,Thu,Fri 09:15 Tampa (TPA) 10:55 Midway, Chicago (MDW)
WN 3521 Non-stop Boeing 737-800 (73H) 2:40 Valid until 2025-06-02
Sat 09:50 Love Field, Dallas (DAL) 1 11:15 Memphis (MEM)
WN 3521 Non-stop Boeing 737-700 (73W) 1:25 Effective 2025-08-09 through 2025-09-27
Sat 09:55 Tampa (TPA) 11:40 Midway, Chicago (MDW)
WN 3521 Non-stop Boeing 737-700 (73W) 2:45 Valid until 2025-05-31
Sat 12:25 Midway, Chicago (MDW) 14:50 Sacramento (SMF) B
WN 3521 Non-stop Boeing 737-700 (73W) 4:25 Valid until 2025-05-31
Sun 14:25 Sacramento (SMF) B 17:45 Denver (DEN)
WN 3521 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Effective 2025-06-08 through 2025-08-03
Sun 15:45 Houston Hobby (HOU) 16:40 El Paso (ELP)
WN 3521 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2025-10-05 through 2025-10-26
Sat 16:30 Las Vegas Harry Reid (LAS) 1 17:50 Los Angeles (LAX) 1
WN 3521 Non-stop Boeing 737-800 (73H) 1:20 Effective 2025-10-04 through 2025-11-01
Sun 17:15 El Paso (ELP) 18:25 Los Angeles (LAX) 1
WN 3521 Non-stop Boeing 737-700 (Scimitar Winglets) 2:10 Effective 2025-10-05 through 2025-10-26
Mon,Thu,Fri 17:25 Los Angeles (LAX) 1 18:45 San Jose (SJC) B
WN 3521 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2025-10-02 through 2025-10-31
Tue,Wed 18:15 Los Angeles (LAX) 1 19:30 San Jose (SJC) B
WN 3521 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Effective 2025-10-07 through 2025-10-29
Sat 18:30 Los Angeles (LAX) 1 19:50 San Jose (SJC) B
WN 3521 Non-stop Boeing 737-800 (73H) 1:20 Effective 2025-10-04 through 2025-11-01
Sun 19:00 Los Angeles (LAX) 1 20:10 San Jose (SJC) B
WN 3521 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2025-10-05 through 2025-10-26
Sat 20:30 Kansas City (MCI) 21:35 Las Vegas Harry Reid (LAS) 1
WN 3521 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2025-11-22 through 2025-11-29
Sat 20:30 Kansas City (MCI) 21:35 Las Vegas Harry Reid (LAS) 1
WN 3521 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2025-12-20 through 2026-01-03
Sun 20:50 Kansas City (MCI) 21:55 Las Vegas Harry Reid (LAS) 1
WN 3521 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Operates only on 2025-11-30
Mon,Thu,Fri,Sun 22:05 Kansas City (MCI) 23:10 Las Vegas Harry Reid (LAS) 1
WN 3521 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 22:05 Kansas City (MCI) 23:10 Las Vegas Harry Reid (LAS) 1
WN 3521 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2025-11-21 through 2025-11-28
Fri,Sun 22:05 Kansas City (MCI) 23:10 Las Vegas Harry Reid (LAS) 1
WN 3521 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2025-12-07 through 2025-12-14
Thu 22:05 Kansas City (MCI) 23:10 Las Vegas Harry Reid (LAS) 1
WN 3521 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Operates only on 2025-12-18
Mon 22:05 Kansas City (MCI) 23:10 Las Vegas Harry Reid (LAS) 1
WN 3521 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Operates only on 2026-01-05
Mon-Wed 22:10 Kansas City (MCI) 23:15 Las Vegas Harry Reid (LAS) 1
WN 3521 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2025-11-25 through 2025-12-01
Mon,Tue,Fri,Sun 22:10 Kansas City (MCI) 23:15 Las Vegas Harry Reid (LAS) 1
WN 3521 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2025-12-19 through 2026-01-04
Non-Direct Flights:
Sat 09:55 Tampa (TPA) 14:50 Sacramento (SMF) B
WN 3521 1-stop Boeing 737-700 (73W) 7:55 Valid until 2025-05-31
Sun 15:45 Houston Hobby (HOU) 18:25 Los Angeles (LAX) 1
WN 3521 1-stop Boeing 737-700 (Scimitar Winglets) 4:40 Effective 2025-10-05 through 2025-10-26
Sat 16:30 Las Vegas Harry Reid (LAS) 1 19:50 San Jose (SJC) B
WN 3521 1-stop Boeing 737-800 (73H) 3:20 Effective 2025-10-04 through 2025-11-01
Sun 17:15 El Paso (ELP) 20:10 San Jose (SJC) B
WN 3521 1-stop Boeing 737-700 (Scimitar Winglets) 3:55 Effective 2025-10-05 through 2025-10-26
Sun 15:45 Houston Hobby (HOU) 20:10 San Jose (SJC) B
WN 3521 2-stop Boeing 737-700 (Scimitar Winglets) 6:25 Effective 2025-10-05 through 2025-10-26
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 3521: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN3521
07:30
Burbank (BUR)

13:25
Midway, Chicago (MDW)
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
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Thu
-
Fri
Sat
-
Sun
-
Duration: 3:55, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3521
09:10
Tampa (TPA)

10:55
Midway, Chicago (MDW)
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3521
09:10
Tampa (TPA)

10:55
Midway, Chicago (MDW)
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3521
09:15
Tampa (TPA)

10:55
Midway, Chicago (MDW)
Valid until 2025-06-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3521
09:50
Love Field, Dallas (DAL) 1

11:15
Memphis (MEM)
Effective 2025-08-09 through 2025-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3521
09:55
Tampa (TPA)

11:40
Midway, Chicago (MDW)
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:45, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3521
12:25
Midway, Chicago (MDW)

14:50
Sacramento (SMF) B
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:25, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3521
14:25
Sacramento (SMF) B

17:45
Denver (DEN)
Effective 2025-06-08 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3521
15:45
Houston Hobby (HOU)

16:40
El Paso (ELP)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3521
16:30
Las Vegas Harry Reid (LAS) 1

17:50
Los Angeles (LAX) 1
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3521
17:15
El Paso (ELP)

18:25
Los Angeles (LAX) 1
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3521
17:25
Los Angeles (LAX) 1

18:45
San Jose (SJC) B
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3521
18:15
Los Angeles (LAX) 1

19:30
San Jose (SJC) B
Effective 2025-10-07 through 2025-10-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3521
18:30
Los Angeles (LAX) 1

19:50
San Jose (SJC) B
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:20, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3521
19:00
Los Angeles (LAX) 1

20:10
San Jose (SJC) B
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3521
20:30
Kansas City (MCI)

21:35
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-22 through 2025-11-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3521
20:30
Kansas City (MCI)

21:35
Las Vegas Harry Reid (LAS) 1
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3521
20:50
Kansas City (MCI)

21:55
Las Vegas Harry Reid (LAS) 1
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3521
22:05
Kansas City (MCI)

23:10
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-02 through 2025-11-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3521
22:05
Kansas City (MCI)

23:10
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-21 through 2025-11-28
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3521
22:05
Kansas City (MCI)

23:10
Las Vegas Harry Reid (LAS) 1
Effective 2025-12-07 through 2025-12-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3521
22:05
Kansas City (MCI)

23:10
Las Vegas Harry Reid (LAS) 1
Operates only on 2025-12-18
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3521
22:05
Kansas City (MCI)

23:10
Las Vegas Harry Reid (LAS) 1
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3521
22:10
Kansas City (MCI)

23:15
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-25 through 2025-12-01
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3521
22:10
Kansas City (MCI)

23:15
Las Vegas Harry Reid (LAS) 1
Effective 2025-12-19 through 2026-01-04
Mon
Tue
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN3521
09:55
Tampa (TPA)

14:50
Sacramento (SMF) B
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 7:55, 1-stop
Boeing 737-700 (73W)
Southwest Airlines WN3521
15:45
Houston Hobby (HOU)

18:25
Los Angeles (LAX) 1
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:40, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3521
16:30
Las Vegas Harry Reid (LAS) 1

19:50
San Jose (SJC) B
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:20, 1-stop
Boeing 737-800 (73H)
Southwest Airlines WN3521
17:15
El Paso (ELP)

20:10
San Jose (SJC) B
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3521
15:45
Houston Hobby (HOU)

20:10
San Jose (SJC) B
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 6:25, 2-stop
Boeing 737-700 (Scimitar Winglets)
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This flight number is listed as serving the following routes:
  • Burbank (BUR) - Midway, Chicago (MDW)
  • El Paso (ELP) - Los Angeles (LAX)
  • El Paso (ELP) - San Jose (SJC)
  • Houston Hobby (HOU) - El Paso (ELP)
  • Houston Hobby (HOU) - Los Angeles (LAX)
  • Houston Hobby (HOU) - San Jose (SJC)
  • Kansas City (MCI) - Las Vegas Harry Reid (LAS)
  • Las Vegas Harry Reid (LAS) - Los Angeles (LAX)
  • Las Vegas Harry Reid (LAS) - San Jose (SJC)
  • Los Angeles (LAX) - San Jose (SJC)
  • Love Field, Dallas (DAL) - Memphis (MEM)
  • Midway, Chicago (MDW) - Sacramento (SMF)
  • Sacramento (SMF) - Denver (DEN)
  • Tampa (TPA) - Midway, Chicago (MDW)
  • Tampa (TPA) - Sacramento (SMF)
All Southwest Airlines flights
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