Southwest Airlines flight WN 4373: Multiple routes

FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri 06:15 Baltimore (BWI) 09:20 Austin (AUS) WN 4373 Non-stop Boeing 737-700 (Scimitar Winglets) 4:05 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 06:15 Baltimore (BWI) 09:20 Austin (AUS) WN 4373 Non-stop Boeing 737-700 (Scimitar Winglets) 4:05 Effective 2026-02-20 through 2026-03-01
Sat 08:15 Baltimore (BWI) 11:20 Austin (AUS) WN 4373 Non-stop Boeing 737-800 (73H) 4:05 Effective 2026-02-14 through 2026-02-28
Thu,Fri,Sun 09:15 Baltimore (BWI) 12:15 Austin (AUS) WN 4373 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-01-11 through 2026-01-16
Mon,Sun 09:15 Baltimore (BWI) 12:15 Austin (AUS) WN 4373 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 09:15 Baltimore (BWI) 12:15 Austin (AUS) WN 4373 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-02-01 through 2026-02-06
Mon,Sun 09:15 Baltimore (BWI) 12:15 Austin (AUS) WN 4373 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 09:15 Baltimore (BWI) 12:15 Austin (AUS) WN 4373 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-02-17 through 2026-02-23
Mon 09:15 Baltimore (BWI) 12:15 Austin (AUS) WN 4373 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Operates only on 2026-03-02
Mon,Thu,Fri 09:55 Austin (AUS) 11:20 Amarillo (AMA) WN 4373 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 09:55 Austin (AUS) 11:20 Amarillo (AMA) WN 4373 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Effective 2026-02-20 through 2026-03-01
Sat 11:15 Baltimore (BWI) 14:20 Austin (AUS) WN 4373 Non-stop Boeing 737-800 (73H) 4:05 Effective 2026-01-10 through 2026-02-07
Fri,Sun 15:15 Sacramento (SMF) B 16:35 Ontario, Los Angeles (ONT) 4 WN 4373 Non-stop Boeing 737-700 (Scimitar Winglets) 1:20 Effective 2026-01-02 through 2026-01-04
Sat 16:45 Sacramento (SMF) B 18:10 Ontario, Los Angeles (ONT) 4 WN 4373 Non-stop Boeing 737-700 (Scimitar Winglets) 1:25 Operates only on 2026-01-03
Mon-Fri 18:00 Baltimore (BWI) 21:00 Austin (AUS) WN 4373 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 18:00 Baltimore (BWI) 21:00 Austin (AUS) WN 4373 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-01-18 through 2026-01-23
Mon-Fri 18:00 Baltimore (BWI) 21:00 Austin (AUS) WN 4373 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-01-26 through 2026-02-04
Tue,Wed,Sun 18:00 Baltimore (BWI) 21:00 Austin (AUS) WN 4373 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-02-08 through 2026-02-11
Tue,Wed 18:00 Baltimore (BWI) 21:00 Austin (AUS) WN 4373 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-02-18 through 2026-03-04
Sat 18:45 Ontario, Los Angeles (ONT) 4 19:50 Las Vegas Harry Reid (LAS) 1 WN 4373 Non-stop Boeing 737-700 (Scimitar Winglets) 1:05 Operates only on 2026-01-03
Tue,Wed 19:45 Phoenix Sky Harbor (PHX) 4 20:55 San Diego (SAN) 1 WN 4373 Non-stop Boeing 737-800 (73H) 1:10 Effective 2026-08-04 through 2026-09-30
Sun 20:40 Phoenix Sky Harbor (PHX) 4 21:50 San Diego (SAN) 1 WN 4373 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2026-08-09 through 2026-09-27
Mon,Thu,Fri 21:00 Phoenix Sky Harbor (PHX) 4 22:10 San Diego (SAN) 1 WN 4373 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2026-08-06 through 2026-09-28
Tue,Wed 21:15 Baltimore (BWI) 22:55 Grand Rapids (GRR) WN 4373 Non-stop Boeing 737-800 (73H) 1:40 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 22:35 Baltimore (BWI) 00:15 Grand Rapids (GRR) WN 4373 Non-stop Boeing 737-800 (73H) 1:40 Effective 2026-06-04 through 2026-08-03 The flight arrives 1 day after departure.
Sun 22:40 Baltimore (BWI) 00:25 Grand Rapids (GRR) WN 4373 Non-stop Boeing 737-800 (73H) 1:45 Effective 2026-06-07 through 2026-08-02 The flight arrives 1 day after departure.
Non-Direct Flights:
Mon,Thu,Fri 06:15 Baltimore (BWI) 11:20 Amarillo (AMA) WN 4373 1-stop Boeing 737-700 (Scimitar Winglets) 6:05 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 06:15 Baltimore (BWI) 11:20 Amarillo (AMA) WN 4373 1-stop Boeing 737-700 (Scimitar Winglets) 6:05 Effective 2026-02-20 through 2026-03-01
Sat 16:45 Sacramento (SMF) B 19:50 Las Vegas Harry Reid (LAS) 1 WN 4373 1-stop Boeing 737-700 (Scimitar Winglets) 3:05 Operates only on 2026-01-03

This flight number is listed as serving the following routes:

Austin (AUS) - Amarillo (AMA)
Baltimore (BWI) - Amarillo (AMA)
Baltimore (BWI) - Austin (AUS)
Baltimore (BWI) - Grand Rapids (GRR)
Ontario, Los Angeles (ONT) - Las Vegas Harry Reid (LAS)
Phoenix Sky Harbor (PHX) - San Diego (SAN)
Sacramento (SMF) - Las Vegas Harry Reid (LAS)
Sacramento (SMF) - Ontario, Los Angeles (ONT)

All Southwest Airlines flights

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Southwest Airlines flight WN 4373: Multiple routes

FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN4373

06:15

Baltimore (BWI)

09:20

Austin (AUS)

Effective 2026-02-12 through 2026-02-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4373

06:15

Baltimore (BWI)

09:20

Austin (AUS)

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 4:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4373

08:15

Baltimore (BWI)

11:20

Austin (AUS)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4373

09:15

Baltimore (BWI)

12:15

Austin (AUS)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4373

09:15

Baltimore (BWI)

12:15

Austin (AUS)

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

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4373

09:15

Baltimore (BWI)

12:15

Austin (AUS)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4373

09:15

Baltimore (BWI)

12:15

Austin (AUS)

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

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4373

09:15

Baltimore (BWI)

12:15

Austin (AUS)

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

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4373

09:15

Baltimore (BWI)

12:15

Austin (AUS)

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4373

09:55

Austin (AUS)

11:20

Amarillo (AMA)

Effective 2026-02-12 through 2026-02-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN4373

09:55

Austin (AUS)

11:20

Amarillo (AMA)

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN4373

11:15

Baltimore (BWI)

14:20

Austin (AUS)

Effective 2026-01-10 through 2026-02-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4373

15:15

Sacramento (SMF) B

16:35

Ontario, Los Angeles (ONT) 4

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 1:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4373

16:45

Sacramento (SMF) B

18:10

Ontario, Los Angeles (ONT) 4

Operates only on 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN4373

18:00

Baltimore (BWI)

21:00

Austin (AUS)

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

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 4:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4373

18:00

Baltimore (BWI)

21:00

Austin (AUS)

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

Mon
-

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 4:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4373

18:00

Baltimore (BWI)

21:00

Austin (AUS)

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

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 4:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4373

18:00

Baltimore (BWI)

21:00

Austin (AUS)

Effective 2026-02-08 through 2026-02-11

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4373

18:00

Baltimore (BWI)

21:00

Austin (AUS)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4373

18:45

Ontario, Los Angeles (ONT) 4

19:50

Las Vegas Harry Reid (LAS) 1

Operates only on 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 1:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4373

19:45

Phoenix Sky Harbor (PHX) 4

20:55

San Diego (SAN) 1

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:10, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4373

20:40

Phoenix Sky Harbor (PHX) 4

21:50

San Diego (SAN) 1

Effective 2026-08-09 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 WN4373

21:00

Phoenix Sky Harbor (PHX) 4

22:10

San Diego (SAN) 1

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN4373

21:15

Baltimore (BWI)

22:55

Grand Rapids (GRR)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4373

22:35

Baltimore (BWI)

00:15(+1)

Grand Rapids (GRR)

Effective 2026-06-04 through 2026-08-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN4373

22:40

Baltimore (BWI)

00:25(+1)

Grand Rapids (GRR)

Effective 2026-06-07 through 2026-08-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:45, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.

Non-Direct Flights:

Southwest Airlines WN4373

06:15

Baltimore (BWI)

11:20

Amarillo (AMA)

Effective 2026-02-12 through 2026-02-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 6:05, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN4373

06:15

Baltimore (BWI)

11:20

Amarillo (AMA)

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 6:05, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN4373

16:45

Sacramento (SMF) B

19:50

Las Vegas Harry Reid (LAS) 1

Operates only on 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:05, 1-stop
Boeing 737-700 (Scimitar Winglets)

This flight number is listed as serving the following routes:

Austin (AUS) - Amarillo (AMA)
Baltimore (BWI) - Amarillo (AMA)
Baltimore (BWI) - Austin (AUS)
Baltimore (BWI) - Grand Rapids (GRR)
Ontario, Los Angeles (ONT) - Las Vegas Harry Reid (LAS)
Phoenix Sky Harbor (PHX) - San Diego (SAN)
Sacramento (SMF) - Las Vegas Harry Reid (LAS)
Sacramento (SMF) - Ontario, Los Angeles (ONT)

All Southwest Airlines flights

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