Southwest Airlines flight WN 3621: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sun 05:55 Midway, Chicago (MDW) 09:10 Boston Logan (BOS) B
WN 3621 Non-stop Boeing 737-700 (73W) 2:15 Effective 2025-08-10 through 2025-08-24
Sun 05:55 Midway, Chicago (MDW) 09:10 Boston Logan (BOS) B
WN 3621 Non-stop Boeing 737-700 (73W) 2:15 Effective 2025-09-07 through 2025-09-28
Sun 06:20 Orlando (MCO) 08:10 Milwaukee (MKE)
WN 3621 Non-stop Boeing 737-800 (73H) 2:50 Effective 2025-10-05 through 2025-10-26
Mon,Thu,Fri 09:10 Orlando (MCO) 11:00 Milwaukee (MKE)
WN 3621 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2025-10-02 through 2025-10-31
Sat 09:20 Orlando (MCO) 11:10 Milwaukee (MKE)
WN 3621 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective 2025-10-04 through 2025-11-01
Sun 09:35 Savannah (SAV) 11:05 Love Field, Dallas (DAL) 1
WN 3621 Non-stop Boeing 737-700 (73W) 2:30 Operates only on 2025-08-31
Sat 14:55 Austin (AUS) 16:50 Panama City (ECP)
WN 3621 Non-stop Boeing 737-700 (73W) 1:55 Valid until 2025-05-31
Fri 15:10 Love Field, Dallas (DAL) 1 19:50 Boston Logan (BOS) B
WN 3621 Non-stop Boeing 737-800 (73H) 3:40 Operates only on 2025-07-04
Mon,Thu,Fri,Sun 15:25 Oklahoma City (OKC) 16:10 Las Vegas Harry Reid (LAS) 1
WN 3621 Non-stop Boeing 737-800 (73H) 2:45 Effective 2025-11-02 through 2025-11-16
Mon,Fri,Sun 15:25 Oklahoma City (OKC) 16:10 Las Vegas Harry Reid (LAS) 1
WN 3621 Non-stop Boeing 737-800 (73H) 2:45 Effective 2025-11-21 through 2025-11-28
Fri,Sun 15:25 Oklahoma City (OKC) 16:10 Las Vegas Harry Reid (LAS) 1
WN 3621 Non-stop Boeing 737-800 (73H) 2:45 Effective 2025-12-07 through 2025-12-14
Thu 15:25 Oklahoma City (OKC) 16:10 Las Vegas Harry Reid (LAS) 1
WN 3621 Non-stop Boeing 737-800 (73H) 2:45 Operates only on 2025-12-18
Mon 15:25 Oklahoma City (OKC) 16:10 Las Vegas Harry Reid (LAS) 1
WN 3621 Non-stop Boeing 737-800 (73H) 2:45 Operates only on 2026-01-05
Sat 16:00 Oklahoma City (OKC) 16:45 Las Vegas Harry Reid (LAS) 1
WN 3621 Non-stop Boeing 737-800 (73H) 2:45 Effective 2025-11-08 through 2025-11-15
Sat 16:00 Oklahoma City (OKC) 16:45 Las Vegas Harry Reid (LAS) 1
WN 3621 Non-stop Boeing 737-800 (73H) 2:45 Effective 2025-12-06 through 2025-12-13
Tue,Wed 17:50 Oklahoma City (OKC) 18:35 Las Vegas Harry Reid (LAS) 1
WN 3621 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2025-11-04 through 2025-11-12
Mon-Thu 17:50 Oklahoma City (OKC) 18:35 Las Vegas Harry Reid (LAS) 1
WN 3621 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2025-11-17 through 2025-11-20
Mon-Fri 17:50 Oklahoma City (OKC) 18:35 Las Vegas Harry Reid (LAS) 1
WN 3621 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2025-12-02 through 2025-12-11
Mon-Wed 17:50 Oklahoma City (OKC) 18:35 Las Vegas Harry Reid (LAS) 1
WN 3621 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2025-12-15 through 2025-12-17
Wed,Thu 17:50 Oklahoma City (OKC) 18:35 Las Vegas Harry Reid (LAS) 1
WN 3621 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2025-12-24 through 2026-01-01
Sun 18:35 Los Angeles (LAX) 1 21:00 Phoenix Sky Harbor (PHX) 4
WN 3621 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Operates only on 2025-11-30
Tue,Wed 20:15 Orlando (MCO) 22:10 Milwaukee (MKE)
WN 3621 Non-stop Boeing 737-800 (73H) 2:55 Effective 2025-10-07 through 2025-10-29
Sun 20:35 Kansas City (MCI) 22:05 Love Field, Dallas (DAL) 1
WN 3621 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2025-06-08 through 2025-08-03
Sat 21:00 Kansas City (MCI) 22:25 Love Field, Dallas (DAL) 1
WN 3621 Non-stop Boeing 737-800 (73H) 1:25 Effective 2025-06-07 through 2025-08-02
Sun 21:10 Denver (DEN) 22:30 Spokane (GEG)
WN 3621 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Operates only on 2025-05-25
Mon,Thu,Fri 21:20 Kansas City (MCI) 22:45 Love Field, Dallas (DAL) 1
WN 3621 Non-stop Boeing 737-800 (73H) 1:25 Effective 2025-06-05 through 2025-07-03
Mon,Thu,Fri 21:20 Kansas City (MCI) 22:45 Love Field, Dallas (DAL) 1
WN 3621 Non-stop Boeing 737-800 (73H) 1:25 Effective 2025-07-07 through 2025-08-04
Sun 22:50 Denver (DEN) 00:10 Spokane (GEG)
WN 3621 Non-stop Boeing 737-800 (73H) 2:20 Valid until 2025-05-18
The flight arrives 1 day after departure.
Sun 22:50 Denver (DEN) 00:10 Spokane (GEG)
WN 3621 Non-stop Boeing 737-800 (73H) 2:20 Operates only on 2025-06-01
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 3621: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN3621
05:55
Midway, Chicago (MDW)

09:10
Boston Logan (BOS) B
Effective 2025-08-10 through 2025-08-24
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:15, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3621
05:55
Midway, Chicago (MDW)

09:10
Boston Logan (BOS) B
Effective 2025-09-07 through 2025-09-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:15, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3621
06:20
Orlando (MCO)

08:10
Milwaukee (MKE)
Effective 2025-10-05 through 2025-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:50, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3621
09:10
Orlando (MCO)

11:00
Milwaukee (MKE)
Effective 2025-10-02 through 2025-10-31
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3621
09:20
Orlando (MCO)

11:10
Milwaukee (MKE)
Effective 2025-10-04 through 2025-11-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3621
09:35
Savannah (SAV)

11:05
Love Field, Dallas (DAL) 1
Operates only on 2025-08-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:30, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3621
14:55
Austin (AUS)

16:50
Panama City (ECP)
Valid until 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:55, non-stop
Boeing 737-700 (73W)
Southwest Airlines WN3621
15:10
Love Field, Dallas (DAL) 1

19:50
Boston Logan (BOS) B
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 3:40, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3621
15:25
Oklahoma City (OKC)

16:10
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-02 through 2025-11-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3621
15:25
Oklahoma City (OKC)

16:10
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-21 through 2025-11-28
Mon
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3621
15:25
Oklahoma City (OKC)

16:10
Las Vegas Harry Reid (LAS) 1
Effective 2025-12-07 through 2025-12-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3621
15:25
Oklahoma City (OKC)

16:10
Las Vegas Harry Reid (LAS) 1
Operates only on 2025-12-18
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3621
15:25
Oklahoma City (OKC)

16:10
Las Vegas Harry Reid (LAS) 1
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3621
16:00
Oklahoma City (OKC)

16:45
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-08 through 2025-11-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3621
16:00
Oklahoma City (OKC)

16:45
Las Vegas Harry Reid (LAS) 1
Effective 2025-12-06 through 2025-12-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:45, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3621
17:50
Oklahoma City (OKC)

18:35
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-04 through 2025-11-12
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3621
17:50
Oklahoma City (OKC)

18:35
Las Vegas Harry Reid (LAS) 1
Effective 2025-11-17 through 2025-11-20
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3621
17:50
Oklahoma City (OKC)

18:35
Las Vegas Harry Reid (LAS) 1
Effective 2025-12-02 through 2025-12-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3621
17:50
Oklahoma City (OKC)

18:35
Las Vegas Harry Reid (LAS) 1
Effective 2025-12-15 through 2025-12-17
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3621
17:50
Oklahoma City (OKC)

18:35
Las Vegas Harry Reid (LAS) 1
Effective 2025-12-24 through 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3621
18:35
Los Angeles (LAX) 1

21:00
Phoenix Sky Harbor (PHX) 4
Operates only on 2025-11-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Southwest Airlines WN3621
20:15
Orlando (MCO)

22:10
Milwaukee (MKE)
Effective 2025-10-07 through 2025-10-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:55, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3621
20:35
Kansas City (MCI)

22:05
Love Field, Dallas (DAL) 1
Effective 2025-06-08 through 2025-08-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3621
21:00
Kansas City (MCI)

22:25
Love Field, Dallas (DAL) 1
Effective 2025-06-07 through 2025-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:25, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3621
21:10
Denver (DEN)

22:30
Spokane (GEG)
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)
Southwest Airlines WN3621
21:20
Kansas City (MCI)

22:45
Love Field, Dallas (DAL) 1
Effective 2025-06-05 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3621
21:20
Kansas City (MCI)

22:45
Love Field, Dallas (DAL) 1
Effective 2025-07-07 through 2025-08-04
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:25, non-stop
Boeing 737-800 (73H)
Southwest Airlines WN3621
22:50
Denver (DEN)

00:10(+1)
Spokane (GEG)
Valid until 2025-05-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
Southwest Airlines WN3621
22:50
Denver (DEN)

00:10(+1)
Spokane (GEG)
Operates only on 2025-06-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:20, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:
  • Austin (AUS) - Panama City (ECP)
  • Denver (DEN) - Spokane (GEG)
  • Kansas City (MCI) - Love Field, Dallas (DAL)
  • Los Angeles (LAX) - Phoenix Sky Harbor (PHX)
  • Love Field, Dallas (DAL) - Boston Logan (BOS)
  • Midway, Chicago (MDW) - Boston Logan (BOS)
  • Oklahoma City (OKC) - Las Vegas Harry Reid (LAS)
  • Orlando (MCO) - Milwaukee (MKE)
  • Savannah (SAV) - Love Field, Dallas (DAL)
All Southwest Airlines flights
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