Southwest Airlines flight WN 3678: Multiple routes

Ad box here 1220564027 I FlightWNum Top Box

FLIGHT SCHEDULE
Direct Flights:
Sun 06:35 Saint Louis (STL) 2 08:00 Las Vegas Harry Reid (LAS) 1 WN 3678 Non-stop Boeing 737 MAX 8 (7M8) 3:25 Effective 2026-06-07 through 2026-08-02
Tue,Wed 07:20 Sacramento (SMF) B 13:25 Nashville (BNA) WN 3678 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Effective 2026-08-04 through 2026-09-30
Sat 08:00 Tampa (TPA) 10:20 Baltimore (BWI) WN 3678 Non-stop Boeing 737-700 (Scimitar Winglets) 2:20 Effective 2026-06-06 through 2026-08-01
Sat 09:00 Orlando (MCO) 11:10 San Diego (SAN) 1 WN 3678 Non-stop Boeing 737 MAX 8 (7M8) 5:10 Effective 2026-08-08 through 2026-09-26
Mon,Tue,Fri,Sun 09:35 Chicago Midway (MDW) 12:50 Boston Logan (BOS) B WN 3678 Non-stop Boeing 737 MAX 8 (7M8) 2:15 Valid until 2026-01-05
Tue,Wed 09:45 Las Vegas Harry Reid (LAS) 1 12:50 Bozeman (BZN) WN 3678 Non-stop Boeing 737-800 (73H) 2:05 Effective 2026-06-09 through 2026-07-29
Sat 09:50 Chicago Midway (MDW) 13:10 Boston Logan (BOS) B WN 3678 Non-stop Boeing 737 MAX 8 (7M8) 2:20 Valid until 2026-01-03
Mon,Thu,Fri 11:10 Sacramento (SMF) B 17:15 Nashville (BNA) WN 3678 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Effective 2026-08-06 through 2026-09-28
Tue,Wed 13:50 Salt Lake City (SLC) 15:20 Denver (DEN) WN 3678 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-03-10 through 2026-04-01
Mon-Fri 14:00 Sacramento (SMF) B 16:00 Seattle-Tacoma (SEA) WN 3678 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-01-06 through 2026-01-14
Mon-Fri 14:00 Sacramento (SMF) B 16:00 Seattle-Tacoma (SEA) WN 3678 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-01-20 through 2026-02-04
Tue,Wed,Sun 14:00 Sacramento (SMF) B 16:00 Seattle-Tacoma (SEA) WN 3678 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-02-08 through 2026-02-11
Tue,Wed 14:00 Sacramento (SMF) B 16:00 Seattle-Tacoma (SEA) WN 3678 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-02-18 through 2026-03-04
Mon,Thu,Fri 15:45 Sacramento (SMF) B 17:45 Seattle-Tacoma (SEA) WN 3678 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 15:45 Sacramento (SMF) B 17:45 Seattle-Tacoma (SEA) WN 3678 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-02-20 through 2026-03-01
Mon,Thu,Fri 16:20 Salt Lake City (SLC) 17:50 Denver (DEN) WN 3678 Non-stop Boeing 737-700 (Scimitar Winglets) 1:30 Effective 2026-03-05 through 2026-04-06
Thu,Fri,Sun 16:30 Sacramento (SMF) B 18:30 Seattle-Tacoma (SEA) WN 3678 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-01-11 through 2026-01-16
Mon,Sun 16:30 Sacramento (SMF) B 18:30 Seattle-Tacoma (SEA) WN 3678 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 16:30 Sacramento (SMF) B 18:30 Seattle-Tacoma (SEA) WN 3678 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-02-01 through 2026-02-06
Mon,Sun 16:30 Sacramento (SMF) B 18:30 Seattle-Tacoma (SEA) WN 3678 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 16:30 Sacramento (SMF) B 18:30 Seattle-Tacoma (SEA) WN 3678 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-02-17 through 2026-02-23
Mon 16:30 Sacramento (SMF) B 18:30 Seattle-Tacoma (SEA) WN 3678 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Operates only on 2026-03-02
Sat 16:40 Salt Lake City (SLC) 18:10 Denver (DEN) WN 3678 Non-stop Boeing 737 MAX 8 (7M8) 1:30 Effective 2026-03-07 through 2026-04-04
Sun 16:40 Salt Lake City (SLC) 18:10 Denver (DEN) WN 3678 Non-stop Boeing 737-800 (73H) 1:30 Effective 2026-03-08 through 2026-04-05
Sat 18:10 Sacramento (SMF) B 20:10 Seattle-Tacoma (SEA) WN 3678 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-01-10 through 2026-02-07
Wed,Thu 18:15 Chicago Midway (MDW) 21:35 Boston Logan (BOS) B WN 3678 Non-stop Boeing 737-800 (73H) 2:20 Valid until 2026-01-01

Ad flat here 1377413384 I FlightWNum Lower

Parallax here

This flight number is listed as serving the following routes:

Chicago Midway (MDW) - Boston Logan (BOS)
Las Vegas Harry Reid (LAS) - Bozeman (BZN)
Orlando (MCO) - San Diego (SAN)
Sacramento (SMF) - Nashville (BNA)
Sacramento (SMF) - Seattle-Tacoma (SEA)
Saint Louis (STL) - Las Vegas Harry Reid (LAS)
Salt Lake City (SLC) - Denver (DEN)
Tampa (TPA) - Baltimore (BWI)

All Southwest Airlines flights

Feedback - Disclaimer - Privacy - new_base.html - DESKTOP - CACHE: False - LANG: en - IS_EU: False

Southwest Airlines flight WN 3678: Multiple routes

Ad mobi flat here (320x100px) 6074960173 M FlightWNum Top Flat

FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN3678

06:35

Saint Louis (STL) 2

08:00

Las Vegas Harry Reid (LAS) 1

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3678

07:20

Sacramento (SMF) B

13:25

Nashville (BNA)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3678

08:00

Tampa (TPA)

10:20

Baltimore (BWI)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:20, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN3678

09:00

Orlando (MCO)

11:10

San Diego (SAN) 1

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 5:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3678

09:35

Chicago Midway (MDW)

12:50

Boston Logan (BOS) B

Valid until 2026-01-05

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN3678

09:45

Las Vegas Harry Reid (LAS) 1

12:50

Bozeman (BZN)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3678

09:50

Chicago Midway (MDW)

13:10

Boston Logan (BOS) B

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:20, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3678

11:10

Sacramento (SMF) B

17:15

Nashville (BNA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3678

13:50

Salt Lake City (SLC)

15:20

Denver (DEN)

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 WN3678

14:00

Sacramento (SMF) B

16:00

Seattle-Tacoma (SEA)

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

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN3678

14:00

Sacramento (SMF) B

16:00

Seattle-Tacoma (SEA)

Effective 2026-01-20 through 2026-02-04

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN3678

14:00

Sacramento (SMF) B

16:00

Seattle-Tacoma (SEA)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN3678

14:00

Sacramento (SMF) B

16:00

Seattle-Tacoma (SEA)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN3678

15:45

Sacramento (SMF) B

17:45

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3678

15:45

Sacramento (SMF) B

17:45

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3678

16:20

Salt Lake City (SLC)

17:50

Denver (DEN)

Effective 2026-03-05 through 2026-04-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN3678

16:30

Sacramento (SMF) B

18:30

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3678

16:30

Sacramento (SMF) B

18:30

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3678

16:30

Sacramento (SMF) B

18:30

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3678

16:30

Sacramento (SMF) B

18:30

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3678

16:30

Sacramento (SMF) B

18:30

Seattle-Tacoma (SEA)

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

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3678

16:30

Sacramento (SMF) B

18:30

Seattle-Tacoma (SEA)

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3678

16:40

Salt Lake City (SLC)

18:10

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN3678

16:40

Salt Lake City (SLC)

18:10

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN3678

18:10

Sacramento (SMF) B

20:10

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN3678

18:15

Chicago Midway (MDW)

21:35

Boston Logan (BOS) B

Valid until 2026-01-01

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:20, non-stop
Boeing 737-800 (73H)

Ad mobi box here (300x250px) 8888825773 M FlightWNum Bottom Box

Parallax here

This flight number is listed as serving the following routes:

Chicago Midway (MDW) - Boston Logan (BOS)
Las Vegas Harry Reid (LAS) - Bozeman (BZN)
Orlando (MCO) - San Diego (SAN)
Sacramento (SMF) - Nashville (BNA)
Sacramento (SMF) - Seattle-Tacoma (SEA)
Saint Louis (STL) - Las Vegas Harry Reid (LAS)
Salt Lake City (SLC) - Denver (DEN)
Tampa (TPA) - Baltimore (BWI)

All Southwest Airlines flights

Feedback - Disclaimer - Privacy - new_base.html - MOBILE

- CACHE: False - LANG: en - IS_EU: False