Southwest Airlines flight WN 3643: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Sat 08:00 Orlando (MCO) 10:25 Cincinnati (CVG) WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 2:25 Operates only on 2026-01-03
Tue,Wed 10:30 Sacramento (SMF) B 12:00 Los Angeles (LAX) 1 WN 3643 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 13:00 Chicago Midway (MDW) 15:10 Cleveland (CLE) WN 3643 Non-stop Boeing 737 MAX 8 (7M8) 1:10 Effective 2026-08-06 through 2026-09-28
Sun 14:30 Denver (DEN) 16:55 Omaha (OMA) WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-04-12 through 2026-05-17
Sun 14:30 Denver (DEN) 16:55 Omaha (OMA) WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Operates only on 2026-05-31
Sat 14:50 Omaha (OMA) 16:05 Saint Louis (STL) 2 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Effective 2026-04-11 through 2026-05-30
Sat,Sun 15:20 Chicago Midway (MDW) 17:30 Cleveland (CLE) WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2026-08-08 through 2026-09-27
Tue,Wed 16:15 Chicago Midway (MDW) 18:30 Cleveland (CLE) WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Effective 2026-08-04 through 2026-09-30
Sun 16:25 Raleigh/Durham (RDU) 1 18:10 Kansas City (MCI) WN 3643 Non-stop Boeing 737 MAX 8 (7M8) 2:45 Effective 2026-03-08 through 2026-04-05
Tue,Wed 16:45 Omaha (OMA) 18:00 Saint Louis (STL) 2 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Effective 2026-04-07 through 2026-06-03
Sun 17:30 Omaha (OMA) 18:45 Saint Louis (STL) 2 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Effective 2026-04-12 through 2026-05-17
Sun 17:30 Omaha (OMA) 18:45 Saint Louis (STL) 2 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Operates only on 2026-05-31
Mon,Thu,Fri 17:40 Omaha (OMA) 18:55 Saint Louis (STL) 2 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:15 Effective 2026-04-09 through 2026-06-01
Sun 18:15 Denver (DEN) 21:00 Omaha (OMA) WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Operates only on 2026-05-24
Sun 19:20 Saint Louis (STL) 2 22:20 Ronald Reagan Washington (DCA) 1 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-04-12 through 2026-05-17
Sun 19:20 Saint Louis (STL) 2 22:20 Ronald Reagan Washington (DCA) 1 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Operates only on 2026-05-31
Thu,Fri,Sun 20:30 Sacramento (SMF) B 21:55 Las Vegas Harry Reid (LAS) 1 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-01-11 through 2026-01-16
Mon,Sun 20:30 Sacramento (SMF) B 21:55 Las Vegas Harry Reid (LAS) 1 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 20:30 Sacramento (SMF) B 21:55 Las Vegas Harry Reid (LAS) 1 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-02-01 through 2026-02-06
Mon,Sun 20:30 Sacramento (SMF) B 21:55 Las Vegas Harry Reid (LAS) 1 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 20:30 Sacramento (SMF) B 21:55 Las Vegas Harry Reid (LAS) 1 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-02-17 through 2026-02-23
Mon 20:30 Sacramento (SMF) B 21:55 Las Vegas Harry Reid (LAS) 1 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Operates only on 2026-03-02
Mon-Fri 20:35 Sacramento (SMF) B 22:05 Las Vegas Harry Reid (LAS) 1 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 20:35 Sacramento (SMF) B 22:05 Las Vegas Harry Reid (LAS) 1 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-01-18 through 2026-01-23
Mon-Fri 20:35 Sacramento (SMF) B 22:05 Las Vegas Harry Reid (LAS) 1 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-01-26 through 2026-02-04
Sun 20:35 Sacramento (SMF) B 22:05 Las Vegas Harry Reid (LAS) 1 WN 3643 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Operates only on 2026-02-08
Tue,Wed 20:35 Sacramento (SMF) B 22:05 Las Vegas Harry Reid (LAS) 1 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-02-10 through 2026-02-11
Sat 20:35 Sacramento (SMF) B 22:05 Las Vegas Harry Reid (LAS) 1 WN 3643 Non-stop Boeing 737-800 (73H) 1:30 Effective 2026-02-14 through 2026-02-28
Tue,Wed 20:35 Sacramento (SMF) B 22:05 Las Vegas Harry Reid (LAS) 1 WN 3643 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-02-18 through 2026-03-04
Non-Direct Flights:
Sun 14:30 Denver (DEN) 18:45 Saint Louis (STL) 2 WN 3643 1-stop Boeing 737-700 (Scimitar Winglets) 3:15 Effective 2026-04-12 through 2026-05-17
Sun 14:30 Denver (DEN) 18:45 Saint Louis (STL) 2 WN 3643 1-stop Boeing 737-700 (Scimitar Winglets) 3:15 Operates only on 2026-05-31
Sun 17:30 Omaha (OMA) 22:20 Ronald Reagan Washington (DCA) 1 WN 3643 1-stop Boeing 737-700 (Scimitar Winglets) 3:50 Effective 2026-04-12 through 2026-05-17
Sun 17:30 Omaha (OMA) 22:20 Ronald Reagan Washington (DCA) 1 WN 3643 1-stop Boeing 737-700 (Scimitar Winglets) 3:50 Operates only on 2026-05-31
Sun 14:30 Denver (DEN) 22:20 Ronald Reagan Washington (DCA) 1 WN 3643 2-stop Boeing 737-700 (Scimitar Winglets) 5:50 Effective 2026-04-12 through 2026-05-17
Sun 14:30 Denver (DEN) 22:20 Ronald Reagan Washington (DCA) 1 WN 3643 2-stop Boeing 737-700 (Scimitar Winglets) 5:50 Operates only on 2026-05-31

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This flight number is listed as serving the following routes:

Chicago Midway (MDW) - Cleveland (CLE)
Denver (DEN) - Omaha (OMA)
Denver (DEN) - Ronald Reagan Washington (DCA)
Denver (DEN) - Saint Louis (STL)
Omaha (OMA) - Ronald Reagan Washington (DCA)
Omaha (OMA) - Saint Louis (STL)
Orlando (MCO) - Cincinnati (CVG)
Raleigh/Durham (RDU) - Kansas City (MCI)
Sacramento (SMF) - Las Vegas Harry Reid (LAS)
Sacramento (SMF) - Los Angeles (LAX)
Saint Louis (STL) - Ronald Reagan Washington (DCA)

All Southwest Airlines flights

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Southwest Airlines flight WN 3643: Multiple routes

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN3643

08:00

Orlando (MCO)

10:25

Cincinnati (CVG)

Operates only on 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

10:30

Sacramento (SMF) B

12:00

Los Angeles (LAX) 1

Effective 2026-06-09 through 2026-07-29

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3643

13:00

Chicago Midway (MDW)

15:10

Cleveland (CLE)

Effective 2026-08-06 through 2026-09-28

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3643

14:30

Denver (DEN)

16:55

Omaha (OMA)

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

14:30

Denver (DEN)

16:55

Omaha (OMA)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

14:50

Omaha (OMA)

16:05

Saint Louis (STL) 2

Effective 2026-04-11 through 2026-05-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

15:20

Chicago Midway (MDW)

17:30

Cleveland (CLE)

Effective 2026-08-08 through 2026-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun

Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

16:15

Chicago Midway (MDW)

18:30

Cleveland (CLE)

Effective 2026-08-04 through 2026-09-30

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

16:25

Raleigh/Durham (RDU) 1

18:10

Kansas City (MCI)

Effective 2026-03-08 through 2026-04-05

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:45, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3643

16:45

Omaha (OMA)

18:00

Saint Louis (STL) 2

Effective 2026-04-07 through 2026-06-03

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

17:30

Omaha (OMA)

18:45

Saint Louis (STL) 2

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

17:30

Omaha (OMA)

18:45

Saint Louis (STL) 2

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

17:40

Omaha (OMA)

18:55

Saint Louis (STL) 2

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:15, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

18:15

Denver (DEN)

21:00

Omaha (OMA)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:45, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

19:20

Saint Louis (STL) 2

22:20

Ronald Reagan Washington (DCA) 1

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

19:20

Saint Louis (STL) 2

22:20

Ronald Reagan Washington (DCA) 1

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

20:30

Sacramento (SMF) B

21:55

Las Vegas Harry Reid (LAS) 1

Effective 2026-01-11 through 2026-01-16

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

20:30

Sacramento (SMF) B

21:55

Las Vegas Harry Reid (LAS) 1

Effective 2026-01-19 through 2026-01-25

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

20:30

Sacramento (SMF) B

21:55

Las Vegas Harry Reid (LAS) 1

Effective 2026-02-01 through 2026-02-06

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

20:30

Sacramento (SMF) B

21:55

Las Vegas Harry Reid (LAS) 1

Effective 2026-02-09 through 2026-02-15

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

20:30

Sacramento (SMF) B

21:55

Las Vegas Harry Reid (LAS) 1

Effective 2026-02-17 through 2026-02-23

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

20:30

Sacramento (SMF) B

21:55

Las Vegas Harry Reid (LAS) 1

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:25, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

20:35

Sacramento (SMF) B

22:05

Las Vegas Harry Reid (LAS) 1

Effective 2026-01-06 through 2026-01-14

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

20:35

Sacramento (SMF) B

22:05

Las Vegas Harry Reid (LAS) 1

Effective 2026-01-18 through 2026-01-23

Mon
-

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

20:35

Sacramento (SMF) B

22:05

Las Vegas Harry Reid (LAS) 1

Effective 2026-01-26 through 2026-02-04

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

20:35

Sacramento (SMF) B

22:05

Las Vegas Harry Reid (LAS) 1

Operates only on 2026-02-08

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3643

20:35

Sacramento (SMF) B

22:05

Las Vegas Harry Reid (LAS) 1

Effective 2026-02-10 through 2026-02-11

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3643

20:35

Sacramento (SMF) B

22:05

Las Vegas Harry Reid (LAS) 1

Effective 2026-02-14 through 2026-02-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:30, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3643

20:35

Sacramento (SMF) B

22:05

Las Vegas Harry Reid (LAS) 1

Effective 2026-02-18 through 2026-03-04

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:30, non-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3643

14:30

Denver (DEN)

18:45

Saint Louis (STL) 2

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:15, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3643

14:30

Denver (DEN)

18:45

Saint Louis (STL) 2

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:15, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3643

17:30

Omaha (OMA)

22:20

Ronald Reagan Washington (DCA) 1

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:50, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3643

17:30

Omaha (OMA)

22:20

Ronald Reagan Washington (DCA) 1

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:50, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3643

14:30

Denver (DEN)

22:20

Ronald Reagan Washington (DCA) 1

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:50, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3643

14:30

Denver (DEN)

22:20

Ronald Reagan Washington (DCA) 1

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:50, 2-stop
Boeing 737-700 (Scimitar Winglets)

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Parallax here

This flight number is listed as serving the following routes:

Chicago Midway (MDW) - Cleveland (CLE)
Denver (DEN) - Omaha (OMA)
Denver (DEN) - Ronald Reagan Washington (DCA)
Denver (DEN) - Saint Louis (STL)
Omaha (OMA) - Ronald Reagan Washington (DCA)
Omaha (OMA) - Saint Louis (STL)
Orlando (MCO) - Cincinnati (CVG)
Raleigh/Durham (RDU) - Kansas City (MCI)
Sacramento (SMF) - Las Vegas Harry Reid (LAS)
Sacramento (SMF) - Los Angeles (LAX)
Saint Louis (STL) - Ronald Reagan Washington (DCA)

All Southwest Airlines flights

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