Southwest Airlines flight WN 3478: Multiple routes

FLIGHT SCHEDULE
Direct Flights:
Sat 05:10 Louisville (SDF) 06:50 Baltimore (BWI) WN 3478 Non-stop Boeing 737-800 (73H) 1:40 Effective 2026-02-14 through 2026-02-28
Thu,Fri,Sun 05:25 Louisville (SDF) 07:05 Baltimore (BWI) WN 3478 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Effective 2026-01-11 through 2026-01-16
Mon,Sun 05:25 Louisville (SDF) 07:05 Baltimore (BWI) WN 3478 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 05:25 Louisville (SDF) 07:05 Baltimore (BWI) WN 3478 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Effective 2026-02-01 through 2026-02-06
Mon,Sun 05:25 Louisville (SDF) 07:05 Baltimore (BWI) WN 3478 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 05:25 Louisville (SDF) 07:05 Baltimore (BWI) WN 3478 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Effective 2026-02-17 through 2026-02-23
Mon 05:25 Louisville (SDF) 07:05 Baltimore (BWI) WN 3478 Non-stop Boeing 737 MAX 8 (7M8) 1:40 Operates only on 2026-03-02
Mon,Thu,Fri 05:30 Louisville (SDF) 07:10 Baltimore (BWI) WN 3478 Non-stop Boeing 737-800 (73H) 1:40 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 05:30 Louisville (SDF) 07:10 Baltimore (BWI) WN 3478 Non-stop Boeing 737-800 (73H) 1:40 Effective 2026-02-20 through 2026-03-01
Sat 05:45 Louisville (SDF) 07:25 Baltimore (BWI) WN 3478 Non-stop Boeing 737-800 (73H) 1:40 Effective 2026-01-10 through 2026-02-07
Mon,Thu,Fri 06:35 San Diego (SAN) 1 12:45 Nashville (BNA) WN 3478 Non-stop Boeing 737 MAX 8 (7M8) 4:10 Effective 2026-06-04 through 2026-08-03
Tue,Wed,Sun 06:35 San Diego (SAN) 1 12:45 Nashville (BNA) WN 3478 Non-stop Boeing 737-800 (73H) 4:10 Effective 2026-06-07 through 2026-08-02
Sat 06:50 San Diego (SAN) 1 13:00 Nashville (BNA) WN 3478 Non-stop Boeing 737-700 (Scimitar Winglets) 4:10 Effective 2026-06-06 through 2026-08-01
Wed,Thu 08:40 Tampa (TPA) 10:35 Kansas City (MCI) WN 3478 Non-stop Boeing 737-700 (73W) 2:55 Valid until 2026-01-01
Mon,Thu,Fri 11:05 San Antonio (SAT) A 13:20 Nashville (BNA) WN 3478 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Effective 2026-08-06 through 2026-09-28
Wed,Thu 11:10 Kansas City (MCI) 12:00 Denver (DEN) WN 3478 Non-stop Boeing 737-700 (73W) 1:50 Valid until 2026-01-01
Sat 12:25 San Antonio (SAT) A 14:40 Nashville (BNA) WN 3478 Non-stop Boeing 737-800 (73H) 2:15 Effective 2026-08-08 through 2026-09-26
Sat 13:35 Nashville (BNA) 16:20 Ronald Reagan Washington (DCA) 1 WN 3478 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Effective 2026-06-06 through 2026-08-01
Mon-Fri 14:30 Louisville (SDF) 16:05 Baltimore (BWI) WN 3478 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 14:30 Louisville (SDF) 16:05 Baltimore (BWI) WN 3478 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-01-18 through 2026-01-23
Mon-Fri 14:30 Louisville (SDF) 16:05 Baltimore (BWI) WN 3478 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-01-26 through 2026-01-30
Mon,Tue 14:30 Louisville (SDF) 16:05 Baltimore (BWI) WN 3478 Non-stop Boeing 737 MAX 8 (7M8) 1:35 Effective 2026-02-02 through 2026-02-03
Tue,Wed,Sun 14:30 Louisville (SDF) 16:05 Baltimore (BWI) WN 3478 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-02-04 through 2026-02-11
Tue,Wed 14:30 Louisville (SDF) 16:05 Baltimore (BWI) WN 3478 Non-stop Boeing 737-700 (Scimitar Winglets) 1:35 Effective 2026-02-18 through 2026-03-04
Daily 15:35 Kona (KOA) 16:30 Honolulu (HNL) 2 WN 3478 Non-stop Boeing 737 MAX 8 (7M8) 0:55 Effective 2026-03-08 through 2026-04-06
Thu-Sat 16:35 Kona (KOA) 17:30 Honolulu (HNL) 2 WN 3478 Non-stop Boeing 737 MAX 8 (7M8) 0:55 Effective 2026-03-05 through 2026-03-07
Fri,Sun 20:45 Kansas City (MCI) 21:30 Denver (DEN) WN 3478 Non-stop Boeing 737-700 (Scimitar Winglets) 1:45 Effective 2026-01-02 through 2026-01-04
Mon 21:25 Kansas City (MCI) 22:10 Denver (DEN) WN 3478 Non-stop Boeing 737-800 (73H) 1:45 Operates only on 2026-01-05
Non-Direct Flights:
Sat 06:50 San Diego (SAN) 1 16:20 Ronald Reagan Washington (DCA) 1 WN 3478 1-stop Boeing 737-700 (Scimitar Winglets) 6:30 Effective 2026-06-06 through 2026-08-01
Wed,Thu 08:40 Tampa (TPA) 12:00 Denver (DEN) WN 3478 1-stop Boeing 737-700 (73W) 5:20 Valid until 2026-01-01

This flight number is listed as serving the following routes:

Kansas City (MCI) - Denver (DEN)
Kona (KOA) - Honolulu (HNL)
Louisville (SDF) - Baltimore (BWI)
Nashville (BNA) - Ronald Reagan Washington (DCA)
San Antonio (SAT) - Nashville (BNA)
San Diego (SAN) - Nashville (BNA)
San Diego (SAN) - Ronald Reagan Washington (DCA)
Tampa (TPA) - Denver (DEN)
Tampa (TPA) - Kansas City (MCI)

All Southwest Airlines flights

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Southwest Airlines flight WN 3478: Multiple routes

FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN3478

05:10

Louisville (SDF)

06:50

Baltimore (BWI)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN3478

05:25

Louisville (SDF)

07:05

Baltimore (BWI)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3478

05:25

Louisville (SDF)

07:05

Baltimore (BWI)

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

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3478

05:25

Louisville (SDF)

07:05

Baltimore (BWI)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3478

05:25

Louisville (SDF)

07:05

Baltimore (BWI)

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

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3478

05:25

Louisville (SDF)

07:05

Baltimore (BWI)

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

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3478

05:25

Louisville (SDF)

07:05

Baltimore (BWI)

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3478

05:30

Louisville (SDF)

07:10

Baltimore (BWI)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN3478

05:30

Louisville (SDF)

07:10

Baltimore (BWI)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN3478

05:45

Louisville (SDF)

07:25

Baltimore (BWI)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN3478

06:35

San Diego (SAN) 1

12:45

Nashville (BNA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3478

06:35

San Diego (SAN) 1

12:45

Nashville (BNA)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:10, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3478

06:50

San Diego (SAN) 1

13:00

Nashville (BNA)

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:10, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3478

08:40

Tampa (TPA)

10:35

Kansas City (MCI)

Valid until 2026-01-01

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:55, non-stop
Boeing 737-700 (73W)

Direct Flights:

Southwest Airlines WN3478

11:05

San Antonio (SAT) A

13:20

Nashville (BNA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3478

11:10

Kansas City (MCI)

12:00

Denver (DEN)

Valid until 2026-01-01

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 1:50, non-stop
Boeing 737-700 (73W)

Direct Flights:

Southwest Airlines WN3478

12:25

San Antonio (SAT) A

14:40

Nashville (BNA)

Effective 2026-08-08 through 2026-09-26

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3478

13:35

Nashville (BNA)

16:20

Ronald Reagan Washington (DCA) 1

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN3478

14:30

Louisville (SDF)

16:05

Baltimore (BWI)

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

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3478

14:30

Louisville (SDF)

16:05

Baltimore (BWI)

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

Mon
-

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3478

14:30

Louisville (SDF)

16:05

Baltimore (BWI)

Effective 2026-01-26 through 2026-01-30

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3478

14:30

Louisville (SDF)

16:05

Baltimore (BWI)

Effective 2026-02-02 through 2026-02-03

Mon

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3478

14:30

Louisville (SDF)

16:05

Baltimore (BWI)

Effective 2026-02-04 through 2026-02-11

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3478

14:30

Louisville (SDF)

16:05

Baltimore (BWI)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:35, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3478

15:35

Kona (KOA)

16:30

Honolulu (HNL) 2

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 0:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3478

16:35

Kona (KOA)

17:30

Honolulu (HNL) 2

Effective 2026-03-05 through 2026-03-07

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat

Sun
-

Duration: 0:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3478

20:45

Kansas City (MCI)

21:30

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN3478

21:25

Kansas City (MCI)

22:10

Denver (DEN)

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 1:45, non-stop
Boeing 737-800 (73H)

Non-Direct Flights:

Southwest Airlines WN3478

06:50

San Diego (SAN) 1

16:20

Ronald Reagan Washington (DCA) 1

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 6:30, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3478

08:40

Tampa (TPA)

12:00

Denver (DEN)

Valid until 2026-01-01

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 5:20, 1-stop
Boeing 737-700 (73W)

This flight number is listed as serving the following routes:

Kansas City (MCI) - Denver (DEN)
Kona (KOA) - Honolulu (HNL)
Louisville (SDF) - Baltimore (BWI)
Nashville (BNA) - Ronald Reagan Washington (DCA)
San Antonio (SAT) - Nashville (BNA)
San Diego (SAN) - Nashville (BNA)
San Diego (SAN) - Ronald Reagan Washington (DCA)
Tampa (TPA) - Denver (DEN)
Tampa (TPA) - Kansas City (MCI)

All Southwest Airlines flights

Feedback - Disclaimer - Privacy