Southwest Airlines flight WN 1643: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri 05:55 Cleveland (CLE) 06:50 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 05:55 Cleveland (CLE) 06:50 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-02-20 through 2026-03-01
Sat 06:05 Cleveland (CLE) 07:00 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-02-14 through 2026-02-28
Thu,Fri,Sun 06:10 Cleveland (CLE) 07:10 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-01-11 through 2026-01-16
Mon,Sun 06:10 Cleveland (CLE) 07:10 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 06:10 Cleveland (CLE) 07:10 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-02-01 through 2026-02-06
Mon,Sun 06:10 Cleveland (CLE) 07:10 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 06:10 Cleveland (CLE) 07:10 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-02-17 through 2026-02-23
Mon 06:10 Cleveland (CLE) 07:10 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Operates only on 2026-03-02
Sat 06:30 Cleveland (CLE) 07:25 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-01-10 through 2026-02-07
Mon-Fri 06:40 Cleveland (CLE) 07:35 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 06:40 Cleveland (CLE) 07:35 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-01-18 through 2026-01-23
Mon-Fri 06:40 Cleveland (CLE) 07:35 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-01-26 through 2026-02-04
Tue,Wed,Sun 06:40 Cleveland (CLE) 07:35 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-02-08 through 2026-02-11
Tue,Wed 06:40 Cleveland (CLE) 07:35 Nashville (BNA)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:55 Effective 2026-02-18 through 2026-03-04
Sat 07:25 Burbank (BUR) 08:55 San Francisco (SFO) 2
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-03-07 through 2026-04-04
Tue,Wed 07:30 Burbank (BUR) 09:00 San Francisco (SFO) 2
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-03-10 through 2026-04-01
Sun 07:50 Nashville (BNA) 09:05 Saint Louis (STL) 2
WN 1643 Non-stop Boeing 737 MAX 8 (7M8) 1:15 Effective 2026-08-09 through 2026-09-27
Mon,Thu,Fri,Sun 08:10 Burbank (BUR) 09:35 San Francisco (SFO) 2
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-03-05 through 2026-04-06
Mon 08:20 Cleveland (CLE) 09:10 Saint Louis (STL) 2
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Operates only on 2026-01-05
Tue,Wed 11:05 Houston Hobby (HOU) 13:05 Saint Louis (STL) 2
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-06-09 through 2026-07-29
Fri-Sun 11:35 Ronald Reagan Washington (DCA) 1 13:35 Atlanta (ATL) N
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-01-02 through 2026-01-04
Tue,Wed 12:45 Nashville (BNA) 13:55 Saint Louis (STL) 2
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2026-08-04 through 2026-09-30
Sat 13:05 Denver (DEN) 16:40 New Orleans (MSY)
WN 1643 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2026-06-06 through 2026-08-01
Fri,Sun 14:10 Atlanta (ATL) N 14:45 New Orleans (MSY)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-01-02 through 2026-01-04
Sat 14:10 Atlanta (ATL) N 15:30 Denver (DEN)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 3:20 Operates only on 2026-01-03
Mon,Thu,Fri 14:50 Denver (DEN) 18:25 New Orleans (MSY)
WN 1643 Non-stop Boeing 737-800 (73H) 2:35 Effective 2026-06-04 through 2026-08-03
Fri,Sun 15:20 New Orleans (MSY) 16:50 Dallas Love Field (DAL) 1
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-01-02 through 2026-01-04
Sat 15:40 Luis Munoz Marin, San Juan (SJU) B 18:55 Orlando (MCO)
WN 1643 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-04-11 through 2026-05-30
Tue,Wed 15:45 Luis Munoz Marin, San Juan (SJU) B 19:00 Orlando (MCO)
WN 1643 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-04-07 through 2026-06-03
Mon,Thu,Fri 15:45 Luis Munoz Marin, San Juan (SJU) B 19:00 Orlando (MCO)
WN 1643 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-04-09 through 2026-06-01
Sat 16:10 Denver (DEN) 17:10 Las Vegas Harry Reid (LAS) 1
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Operates only on 2026-01-03
Fri,Sun 17:25 Dallas Love Field (DAL) 1 18:15 El Paso (ELP)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:50 Effective 2026-01-02 through 2026-01-04
Sat 17:45 Las Vegas Harry Reid (LAS) 1 18:55 Long Beach (LGB)
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Operates only on 2026-01-03
Sun 17:55 Luis Munoz Marin, San Juan (SJU) B 21:05 Orlando (MCO)
WN 1643 Non-stop Boeing 737-800 (73H) 3:10 Effective 2026-04-12 through 2026-05-17
Sun 17:55 Luis Munoz Marin, San Juan (SJU) B 21:05 Orlando (MCO)
WN 1643 Non-stop Boeing 737-800 (73H) 3:10 Operates only on 2026-05-31
Wed,Thu 18:05 Cleveland (CLE) 18:45 Saint Louis (STL) 2
WN 1643 Non-stop Boeing 737-700 (73W) 1:40 Valid until 2026-01-01
Fri,Sun 18:50 El Paso (ELP) 20:05 Los Angeles (LAX) 1
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 2:15 Effective 2026-01-02 through 2026-01-04
Mon,Thu,Fri 18:50 Saint Louis (STL) 2 22:25 Boston Logan (BOS) B
WN 1643 Non-stop Boeing 737-800 (73H) 2:35 Effective 2026-08-06 through 2026-09-28
Sat 19:30 Long Beach (LGB) 20:55 Sacramento (SMF) B
WN 1643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Operates only on 2026-01-03
Non-Direct Flights:
Fri,Sun 11:35 Ronald Reagan Washington (DCA) 1 14:45 New Orleans (MSY)
WN 1643 1-stop Boeing 737-700 (Scimitar Winglets) 4:10 Effective 2026-01-02 through 2026-01-04
Sat 11:35 Ronald Reagan Washington (DCA) 1 15:30 Denver (DEN)
WN 1643 1-stop Boeing 737-700 (Scimitar Winglets) 5:55 Operates only on 2026-01-03
Fri,Sun 14:10 Atlanta (ATL) N 16:50 Dallas Love Field (DAL) 1
WN 1643 1-stop Boeing 737-700 (Scimitar Winglets) 3:40 Effective 2026-01-02 through 2026-01-04
Sat 14:10 Atlanta (ATL) N 17:10 Las Vegas Harry Reid (LAS) 1
WN 1643 1-stop Boeing 737-700 (Scimitar Winglets) 6:00 Operates only on 2026-01-03
Fri,Sun 15:20 New Orleans (MSY) 18:15 El Paso (ELP)
WN 1643 1-stop Boeing 737-700 (Scimitar Winglets) 3:55 Effective 2026-01-02 through 2026-01-04
Sat 16:10 Denver (DEN) 18:55 Long Beach (LGB)
WN 1643 1-stop Boeing 737-700 (Scimitar Winglets) 3:45 Operates only on 2026-01-03
Fri,Sun 17:25 Dallas Love Field (DAL) 1 20:05 Los Angeles (LAX) 1
WN 1643 1-stop Boeing 737-700 (Scimitar Winglets) 4:40 Effective 2026-01-02 through 2026-01-04
Sat 17:45 Las Vegas Harry Reid (LAS) 1 20:55 Sacramento (SMF) B
WN 1643 1-stop Boeing 737-700 (Scimitar Winglets) 3:10 Operates only on 2026-01-03
Fri,Sun 11:35 Ronald Reagan Washington (DCA) 1 16:50 Dallas Love Field (DAL) 1
WN 1643 2-stop Boeing 737-700 (Scimitar Winglets) 6:15 Effective 2026-01-02 through 2026-01-04
Sat 11:35 Ronald Reagan Washington (DCA) 1 17:10 Las Vegas Harry Reid (LAS) 1
WN 1643 2-stop Boeing 737-700 (Scimitar Winglets) 8:35 Operates only on 2026-01-03
Fri,Sun 14:10 Atlanta (ATL) N 18:15 El Paso (ELP)
WN 1643 2-stop Boeing 737-700 (Scimitar Winglets) 6:05 Effective 2026-01-02 through 2026-01-04
Sat 14:10 Atlanta (ATL) N 18:55 Long Beach (LGB)
WN 1643 2-stop Boeing 737-700 (Scimitar Winglets) 7:45 Operates only on 2026-01-03
Fri,Sun 15:20 New Orleans (MSY) 20:05 Los Angeles (LAX) 1
WN 1643 2-stop Boeing 737-700 (Scimitar Winglets) 6:45 Effective 2026-01-02 through 2026-01-04
Sat 16:10 Denver (DEN) 20:55 Sacramento (SMF) B
WN 1643 2-stop Boeing 737-700 (Scimitar Winglets) 5:45 Operates only on 2026-01-03
Fri,Sun 11:35 Ronald Reagan Washington (DCA) 1 18:15 El Paso (ELP)
WN 1643 3-stop Boeing 737-700 (Scimitar Winglets) 8:40 Effective 2026-01-02 through 2026-01-04
Sat 11:35 Ronald Reagan Washington (DCA) 1 18:55 Long Beach (LGB)
WN 1643 3-stop Boeing 737-700 (Scimitar Winglets) 10:20 Operates only on 2026-01-03
Fri,Sun 14:10 Atlanta (ATL) N 20:05 Los Angeles (LAX) 1
WN 1643 3-stop Boeing 737-700 (Scimitar Winglets) 8:55 Effective 2026-01-02 through 2026-01-04
Sat 14:10 Atlanta (ATL) N 20:55 Sacramento (SMF) B
WN 1643 3-stop Boeing 737-700 (Scimitar Winglets) 9:45 Operates only on 2026-01-03
Fri,Sun 11:35 Ronald Reagan Washington (DCA) 1 20:05 Los Angeles (LAX) 1
WN 1643 4-stop Boeing 737-700 (Scimitar Winglets) 11:30 Effective 2026-01-02 through 2026-01-04
Sat 11:35 Ronald Reagan Washington (DCA) 1 20:55 Sacramento (SMF) B
WN 1643 4-stop Boeing 737-700 (Scimitar Winglets) 12:20 Operates only on 2026-01-03
This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 1643: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN1643
05:55
Cleveland (CLE)

06:50
Nashville (BNA)
Effective 2026-02-12 through 2026-02-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
05:55
Cleveland (CLE)

06:50
Nashville (BNA)
Effective 2026-02-20 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
06:05
Cleveland (CLE)

07:00
Nashville (BNA)
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
06:10
Cleveland (CLE)

07:10
Nashville (BNA)
Effective 2026-01-11 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
06:10
Cleveland (CLE)

07:10
Nashville (BNA)
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
06:10
Cleveland (CLE)

07:10
Nashville (BNA)
Effective 2026-02-01 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
06:10
Cleveland (CLE)

07:10
Nashville (BNA)
Effective 2026-02-09 through 2026-02-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
06:10
Cleveland (CLE)

07:10
Nashville (BNA)
Effective 2026-02-17 through 2026-02-23
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
06:10
Cleveland (CLE)

07:10
Nashville (BNA)
Operates only on 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
06:30
Cleveland (CLE)

07:25
Nashville (BNA)
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
06:40
Cleveland (CLE)

07:35
Nashville (BNA)
Effective 2026-01-06 through 2026-01-14
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
06:40
Cleveland (CLE)

07:35
Nashville (BNA)
Effective 2026-01-18 through 2026-01-23
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
06:40
Cleveland (CLE)

07:35
Nashville (BNA)
Effective 2026-01-26 through 2026-02-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
06:40
Cleveland (CLE)

07:35
Nashville (BNA)
Effective 2026-02-08 through 2026-02-11
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
06:40
Cleveland (CLE)

07:35
Nashville (BNA)
Effective 2026-02-18 through 2026-03-04
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
07:25
Burbank (BUR)

08:55
San Francisco (SFO) 2
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
07:30
Burbank (BUR)

09:00
San Francisco (SFO) 2
Effective 2026-03-10 through 2026-04-01
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
07:50
Nashville (BNA)

09:05
Saint Louis (STL) 2
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1643
08:10
Burbank (BUR)

09:35
San Francisco (SFO) 2
Effective 2026-03-05 through 2026-04-06
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
08:20
Cleveland (CLE)

09:10
Saint Louis (STL) 2
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
11:05
Houston Hobby (HOU)

13:05
Saint Louis (STL) 2
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
11:35
Ronald Reagan Washington (DCA) 1

13:35
Atlanta (ATL) N
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
Sun
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
12:45
Nashville (BNA)

13:55
Saint Louis (STL) 2
Effective 2026-08-04 through 2026-09-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
13:05
Denver (DEN)

16:40
New Orleans (MSY)
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1643
14:10
Atlanta (ATL) N

14:45
New Orleans (MSY)
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
14:10
Atlanta (ATL) N

15:30
Denver (DEN)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:20, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
14:50
Denver (DEN)

18:25
New Orleans (MSY)
Effective 2026-06-04 through 2026-08-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1643
15:20
New Orleans (MSY)

16:50
Dallas Love Field (DAL) 1
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
15:40
Luis Munoz Marin, San Juan (SJU) B

18:55
Orlando (MCO)
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:15, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1643
15:45
Luis Munoz Marin, San Juan (SJU) B

19:00
Orlando (MCO)
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN1643
15:45
Luis Munoz Marin, San Juan (SJU) B

19:00
Orlando (MCO)
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 3:15, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1643
16:10
Denver (DEN)

17:10
Las Vegas Harry Reid (LAS) 1
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
17:25
Dallas Love Field (DAL) 1

18:15
El Paso (ELP)
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 1:50, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
17:45
Las Vegas Harry Reid (LAS) 1

18:55
Long Beach (LGB)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
17:55
Luis Munoz Marin, San Juan (SJU) B

21:05
Orlando (MCO)
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:10, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1643
17:55
Luis Munoz Marin, San Juan (SJU) B

21:05
Orlando (MCO)
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:10, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1643
18:05
Cleveland (CLE)

18:45
Saint Louis (STL) 2
Valid until 2026-01-01
Mon
-
Tue
-
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:40, non-stop
Boeing 737-700 (73W)
Direct Flights:
Southwest Airlines WN1643
18:50
El Paso (ELP)

20:05
Los Angeles (LAX) 1
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 2:15, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN1643
18:50
Saint Louis (STL) 2

22:25
Boston Logan (BOS) B
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN1643
19:30
Long Beach (LGB)

20:55
Sacramento (SMF) B
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
11:35
Ronald Reagan Washington (DCA) 1

14:45
New Orleans (MSY)
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 4:10, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
11:35
Ronald Reagan Washington (DCA) 1

15:30
Denver (DEN)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
14:10
Atlanta (ATL) N

16:50
Dallas Love Field (DAL) 1
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:40, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
14:10
Atlanta (ATL) N

17:10
Las Vegas Harry Reid (LAS) 1
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 6:00, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
15:20
New Orleans (MSY)

18:15
El Paso (ELP)
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 3:55, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
16:10
Denver (DEN)

18:55
Long Beach (LGB)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:45, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
17:25
Dallas Love Field (DAL) 1

20:05
Los Angeles (LAX) 1
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 4:40, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
17:45
Las Vegas Harry Reid (LAS) 1

20:55
Sacramento (SMF) B
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:10, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
11:35
Ronald Reagan Washington (DCA) 1

16:50
Dallas Love Field (DAL) 1
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 6:15, 2-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
11:35
Ronald Reagan Washington (DCA) 1

17:10
Las Vegas Harry Reid (LAS) 1
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 8:35, 2-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
14:10
Atlanta (ATL) N

18:15
El Paso (ELP)
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 6:05, 2-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
14:10
Atlanta (ATL) N

18:55
Long Beach (LGB)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 7:45, 2-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
15:20
New Orleans (MSY)

20:05
Los Angeles (LAX) 1
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 6:45, 2-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
16:10
Denver (DEN)

20:55
Sacramento (SMF) B
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 5:45, 2-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
11:35
Ronald Reagan Washington (DCA) 1

18:15
El Paso (ELP)
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 8:40, 3-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
11:35
Ronald Reagan Washington (DCA) 1

18:55
Long Beach (LGB)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 10:20, 3-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
14:10
Atlanta (ATL) N

20:05
Los Angeles (LAX) 1
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 8:55, 3-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
14:10
Atlanta (ATL) N

20:55
Sacramento (SMF) B
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 9:45, 3-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
11:35
Ronald Reagan Washington (DCA) 1

20:05
Los Angeles (LAX) 1
Effective 2026-01-02 through 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
Duration: 11:30, 4-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN1643
11:35
Ronald Reagan Washington (DCA) 1

20:55
Sacramento (SMF) B
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 12:20, 4-stop
Boeing 737-700 (Scimitar Winglets)
This flight number is listed as serving the following routes:
  • Atlanta (ATL) - Dallas Love Field (DAL)
  • Atlanta (ATL) - Denver (DEN)
  • Atlanta (ATL) - El Paso (ELP)
  • Atlanta (ATL) - Las Vegas Harry Reid (LAS)
  • Atlanta (ATL) - Long Beach (LGB)
  • Atlanta (ATL) - Los Angeles (LAX)
  • Atlanta (ATL) - New Orleans (MSY)
  • Atlanta (ATL) - Sacramento (SMF)
  • Burbank (BUR) - San Francisco (SFO)
  • Cleveland (CLE) - Nashville (BNA)
  • Cleveland (CLE) - Saint Louis (STL)
  • Dallas Love Field (DAL) - El Paso (ELP)
  • Dallas Love Field (DAL) - Los Angeles (LAX)
  • Denver (DEN) - Las Vegas Harry Reid (LAS)
  • Denver (DEN) - Long Beach (LGB)
  • Denver (DEN) - New Orleans (MSY)
  • Denver (DEN) - Sacramento (SMF)
  • El Paso (ELP) - Los Angeles (LAX)
  • Houston Hobby (HOU) - Saint Louis (STL)
  • Las Vegas Harry Reid (LAS) - Long Beach (LGB)
  • Las Vegas Harry Reid (LAS) - Sacramento (SMF)
  • Long Beach (LGB) - Sacramento (SMF)
  • Luis Munoz Marin, San Juan (SJU) - Orlando (MCO)
  • Nashville (BNA) - Saint Louis (STL)
  • New Orleans (MSY) - Dallas Love Field (DAL)
  • New Orleans (MSY) - El Paso (ELP)
  • New Orleans (MSY) - Los Angeles (LAX)
  • Ronald Reagan Washington (DCA) - Atlanta (ATL)
  • Ronald Reagan Washington (DCA) - Dallas Love Field (DAL)
  • Ronald Reagan Washington (DCA) - Denver (DEN)
  • Ronald Reagan Washington (DCA) - El Paso (ELP)
  • Ronald Reagan Washington (DCA) - Las Vegas Harry Reid (LAS)
  • Ronald Reagan Washington (DCA) - Long Beach (LGB)
  • Ronald Reagan Washington (DCA) - Los Angeles (LAX)
  • Ronald Reagan Washington (DCA) - New Orleans (MSY)
  • Ronald Reagan Washington (DCA) - Sacramento (SMF)
  • Saint Louis (STL) - Boston Logan (BOS)
All Southwest Airlines flights
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