Southwest Airlines flight WN 3677: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Thu,Fri,Sun 05:55 Sacramento (SMF) B 07:55 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-01-11 through 2026-01-16
Mon,Sun 05:55 Sacramento (SMF) B 07:55 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 05:55 Sacramento (SMF) B 07:55 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-02-01 through 2026-02-06
Mon,Sun 05:55 Sacramento (SMF) B 07:55 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 05:55 Sacramento (SMF) B 07:55 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-02-17 through 2026-02-23
Mon 05:55 Sacramento (SMF) B 07:55 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Operates only on 2026-03-02
Sat 06:15 Sacramento (SMF) B 08:15 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737-800 (73H) 2:00 Effective 2026-02-14 through 2026-02-28
Mon,Thu,Fri 06:25 Sacramento (SMF) B 08:25 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 06:25 Sacramento (SMF) B 08:25 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Effective 2026-02-20 through 2026-03-01
Mon-Fri 07:35 Sacramento (SMF) B 09:35 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 07:35 Sacramento (SMF) B 09:35 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-01-18 through 2026-01-23
Mon-Fri 07:35 Sacramento (SMF) B 09:35 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-01-26 through 2026-02-04
Tue,Wed,Sun 07:35 Sacramento (SMF) B 09:35 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-02-08 through 2026-02-11
Tue,Wed 07:35 Sacramento (SMF) B 09:35 Seattle-Tacoma (SEA)
WN 3677 Non-stop Boeing 737-700 (Scimitar Winglets) 2:00 Effective 2026-02-18 through 2026-03-04
Thu,Fri,Sun 08:35 Seattle-Tacoma (SEA) 12:15 Denver (DEN)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-01-11 through 2026-01-16
Mon,Sun 08:35 Seattle-Tacoma (SEA) 12:15 Denver (DEN)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 08:35 Seattle-Tacoma (SEA) 12:15 Denver (DEN)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-02-01 through 2026-02-06
Mon,Sun 08:35 Seattle-Tacoma (SEA) 12:15 Denver (DEN)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 08:35 Seattle-Tacoma (SEA) 12:15 Denver (DEN)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Effective 2026-02-17 through 2026-02-23
Mon 08:35 Seattle-Tacoma (SEA) 12:15 Denver (DEN)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:40 Operates only on 2026-03-02
Sat 08:55 Phoenix Sky Harbor (PHX) 4 16:15 Washington Dulles (IAD)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 4:20 Effective 2026-08-08 through 2026-09-26
Sat 09:25 Fort Myers (RSW) 11:20 Denver (DEN)
WN 3677 Non-stop Boeing 737-700 (Scimitar Winglets) 3:55 Effective 2026-06-06 through 2026-08-01
Sun 09:30 Phoenix Sky Harbor (PHX) 4 16:50 Washington Dulles (IAD)
WN 3677 Non-stop Boeing 737-800 (73H) 4:20 Effective 2026-08-09 through 2026-09-27
Tue,Wed 09:50 Phoenix Sky Harbor (PHX) 4 17:05 Washington Dulles (IAD)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2026-08-04 through 2026-09-30
Mon,Thu,Fri 10:00 Phoenix Sky Harbor (PHX) 4 17:15 Washington Dulles (IAD)
WN 3677 Non-stop Boeing 737-800 (73H) 4:15 Effective 2026-08-06 through 2026-09-28
Sun 10:05 Norfolk (ORF) 11:05 Baltimore (BWI)
WN 3677 Non-stop Boeing 737-800 (73H) 1:00 Effective 2026-03-08 through 2026-04-05
Sun 11:05 Sacramento (SMF) B 12:40 San Diego (SAN) 1
WN 3677 Non-stop Boeing 737-800 (73H) 1:35 Effective 2026-06-07 through 2026-08-02
Sat 12:50 San Francisco (SFO) 2 16:20 Denver (DEN)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:30 Effective 2026-04-11 through 2026-05-30
Tue,Wed 13:20 San Francisco (SFO) 2 16:55 Denver (DEN)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2026-04-07 through 2026-06-03
Sun 13:20 San Diego (SAN) 1 18:55 Saint Louis (STL) 2
WN 3677 Non-stop Boeing 737-800 (73H) 3:35 Effective 2026-06-07 through 2026-08-02
Mon,Thu,Fri 14:25 San Francisco (SFO) 2 18:00 Denver (DEN)
WN 3677 Non-stop Boeing 737 MAX 8 (7M8) 2:35 Effective 2026-04-09 through 2026-06-01
Sun 14:25 San Francisco (SFO) 2 18:00 Denver (DEN)
WN 3677 Non-stop Boeing 737-700 (Scimitar Winglets) 2:35 Effective 2026-04-12 through 2026-05-17
Sun 14:25 San Francisco (SFO) 2 18:00 Denver (DEN)
WN 3677 Non-stop Boeing 737-700 (Scimitar Winglets) 2:35 Operates only on 2026-05-31
Sat 16:10 Rochester (ROC) 19:05 Tampa (TPA)
WN 3677 Non-stop Boeing 737-800 (73H) 2:55 Valid until 2026-01-03
Sat 17:50 Norfolk (ORF) 19:00 Baltimore (BWI)
WN 3677 Non-stop Boeing 737-700 (Scimitar Winglets) 1:10 Effective 2026-03-07 through 2026-04-04
Sun 18:40 Denver (DEN) 19:40 Hayden (HDN)
WN 3677 Non-stop Boeing 737-700 (Scimitar Winglets) 1:00 Effective 2026-04-12 through 2026-05-17
Sun 18:40 Denver (DEN) 19:40 Hayden (HDN)
WN 3677 Non-stop Boeing 737-700 (Scimitar Winglets) 1:00 Operates only on 2026-05-31
Tue,Wed 19:30 Dallas Love Field (DAL) 1 20:50 Denver (DEN)
WN 3677 Non-stop Boeing 737-800 (73H) 2:20 Effective 2026-06-09 through 2026-07-29
Non-Direct Flights:
Thu,Fri,Sun 05:55 Sacramento (SMF) B 12:15 Denver (DEN)
WN 3677 1-stop Boeing 737 MAX 8 (7M8) 5:20 Effective 2026-01-11 through 2026-01-16
Mon,Sun 05:55 Sacramento (SMF) B 12:15 Denver (DEN)
WN 3677 1-stop Boeing 737 MAX 8 (7M8) 5:20 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 05:55 Sacramento (SMF) B 12:15 Denver (DEN)
WN 3677 1-stop Boeing 737 MAX 8 (7M8) 5:20 Effective 2026-02-01 through 2026-02-06
Mon,Sun 05:55 Sacramento (SMF) B 12:15 Denver (DEN)
WN 3677 1-stop Boeing 737 MAX 8 (7M8) 5:20 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 05:55 Sacramento (SMF) B 12:15 Denver (DEN)
WN 3677 1-stop Boeing 737 MAX 8 (7M8) 5:20 Effective 2026-02-17 through 2026-02-23
Mon 05:55 Sacramento (SMF) B 12:15 Denver (DEN)
WN 3677 1-stop Boeing 737 MAX 8 (7M8) 5:20 Operates only on 2026-03-02
Sun 11:05 Sacramento (SMF) B 18:55 Saint Louis (STL) 2
WN 3677 1-stop Boeing 737-800 (73H) 5:50 Effective 2026-06-07 through 2026-08-02
Sun 14:25 San Francisco (SFO) 2 19:40 Hayden (HDN)
WN 3677 1-stop Boeing 737-700 (Scimitar Winglets) 4:15 Effective 2026-04-12 through 2026-05-17
Sun 14:25 San Francisco (SFO) 2 19:40 Hayden (HDN)
WN 3677 1-stop Boeing 737-700 (Scimitar Winglets) 4:15 Operates only on 2026-05-31
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This flight number is listed as serving the following routes:


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Southwest Airlines flight WN 3677: Multiple routes
Ad mobi flat here (320x100px) 6074960173 M FlightWNum Top Flat
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Southwest Airlines WN3677
05:55
Sacramento (SMF) B

07:55
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 WN3677
05:55
Sacramento (SMF) B

07:55
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 WN3677
05:55
Sacramento (SMF) B

07:55
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 WN3677
05:55
Sacramento (SMF) B

07:55
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 WN3677
05:55
Sacramento (SMF) B

07:55
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 WN3677
05:55
Sacramento (SMF) B

07:55
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 WN3677
06:15
Sacramento (SMF) B

08:15
Seattle-Tacoma (SEA)
Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:00, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3677
06:25
Sacramento (SMF) B

08:25
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 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3677
06:25
Sacramento (SMF) B

08:25
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 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3677
07:35
Sacramento (SMF) B

09:35
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 WN3677
07:35
Sacramento (SMF) B

09:35
Seattle-Tacoma (SEA)
Effective 2026-01-18 through 2026-01-23
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3677
07:35
Sacramento (SMF) B

09:35
Seattle-Tacoma (SEA)
Effective 2026-01-26 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 WN3677
07:35
Sacramento (SMF) B

09:35
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 WN3677
07:35
Sacramento (SMF) B

09:35
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 WN3677
08:35
Seattle-Tacoma (SEA)

12:15
Denver (DEN)
Effective 2026-01-11 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3677
08:35
Seattle-Tacoma (SEA)

12:15
Denver (DEN)
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3677
08:35
Seattle-Tacoma (SEA)

12:15
Denver (DEN)
Effective 2026-02-01 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3677
08:35
Seattle-Tacoma (SEA)

12:15
Denver (DEN)
Effective 2026-02-09 through 2026-02-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3677
08:35
Seattle-Tacoma (SEA)

12:15
Denver (DEN)
Effective 2026-02-17 through 2026-02-23
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3677
08:35
Seattle-Tacoma (SEA)

12:15
Denver (DEN)
Operates only on 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:40, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3677
08:55
Phoenix Sky Harbor (PHX) 4

16:15
Washington Dulles (IAD)
Effective 2026-08-08 through 2026-09-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:20, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3677
09:25
Fort Myers (RSW)

11:20
Denver (DEN)
Effective 2026-06-06 through 2026-08-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:55, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3677
09:30
Phoenix Sky Harbor (PHX) 4

16:50
Washington Dulles (IAD)
Effective 2026-08-09 through 2026-09-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:20, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3677
09:50
Phoenix Sky Harbor (PHX) 4

17:05
Washington Dulles (IAD)
Effective 2026-08-04 through 2026-09-30
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3677
10:00
Phoenix Sky Harbor (PHX) 4

17:15
Washington Dulles (IAD)
Effective 2026-08-06 through 2026-09-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 4:15, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3677
10:05
Norfolk (ORF)

11:05
Baltimore (BWI)
Effective 2026-03-08 through 2026-04-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:00, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3677
11:05
Sacramento (SMF) B

12:40
San Diego (SAN) 1
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3677
12:50
San Francisco (SFO) 2

16:20
Denver (DEN)
Effective 2026-04-11 through 2026-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:30, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3677
13:20
San Francisco (SFO) 2

16:55
Denver (DEN)
Effective 2026-04-07 through 2026-06-03
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3677
13:20
San Diego (SAN) 1

18:55
Saint Louis (STL) 2
Effective 2026-06-07 through 2026-08-02
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:35, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3677
14:25
San Francisco (SFO) 2

18:00
Denver (DEN)
Effective 2026-04-09 through 2026-06-01
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 2:35, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
Southwest Airlines WN3677
14:25
San Francisco (SFO) 2

18:00
Denver (DEN)
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3677
14:25
San Francisco (SFO) 2

18:00
Denver (DEN)
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:35, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3677
16:10
Rochester (ROC)

19:05
Tampa (TPA)
Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:55, non-stop
Boeing 737-800 (73H)
Direct Flights:
Southwest Airlines WN3677
17:50
Norfolk (ORF)

19:00
Baltimore (BWI)
Effective 2026-03-07 through 2026-04-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:10, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3677
18:40
Denver (DEN)

19:40
Hayden (HDN)
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3677
18:40
Denver (DEN)

19:40
Hayden (HDN)
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:00, non-stop
Boeing 737-700 (Scimitar Winglets)
Direct Flights:
Southwest Airlines WN3677
19:30
Dallas Love Field (DAL) 1

20:50
Denver (DEN)
Effective 2026-06-09 through 2026-07-29
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:20, non-stop
Boeing 737-800 (73H)
Non-Direct Flights:
Southwest Airlines WN3677
05:55
Sacramento (SMF) B

12:15
Denver (DEN)
Effective 2026-01-11 through 2026-01-16
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 5:20, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN3677
05:55
Sacramento (SMF) B

12:15
Denver (DEN)
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:20, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN3677
05:55
Sacramento (SMF) B

12:15
Denver (DEN)
Effective 2026-02-01 through 2026-02-06
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 5:20, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN3677
05:55
Sacramento (SMF) B

12:15
Denver (DEN)
Effective 2026-02-09 through 2026-02-15
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:20, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN3677
05:55
Sacramento (SMF) B

12:15
Denver (DEN)
Effective 2026-02-17 through 2026-02-23
Mon
Tue
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 5:20, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN3677
05:55
Sacramento (SMF) B

12:15
Denver (DEN)
Operates only on 2026-03-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:20, 1-stop
Boeing 737 MAX 8 (7M8)
Non-Direct Flights:
Southwest Airlines WN3677
11:05
Sacramento (SMF) B

18:55
Saint Louis (STL) 2
Effective 2026-06-07 through 2026-08-02
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
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Sun
Duration: 5:50, 1-stop
Boeing 737-800 (73H)
Non-Direct Flights:
Southwest Airlines WN3677
14:25
San Francisco (SFO) 2

19:40
Hayden (HDN)
Effective 2026-04-12 through 2026-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
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Sun
Duration: 4:15, 1-stop
Boeing 737-700 (Scimitar Winglets)
Non-Direct Flights:
Southwest Airlines WN3677
14:25
San Francisco (SFO) 2

19:40
Hayden (HDN)
Operates only on 2026-05-31
Mon
-
Tue
-
Wed
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Thu
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Fri
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Sat
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Sun
Duration: 4:15, 1-stop
Boeing 737-700 (Scimitar Winglets)
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This flight number is listed as serving the following routes:
  • Dallas Love Field (DAL) - Denver (DEN)
  • Denver (DEN) - Hayden (HDN)
  • Fort Myers (RSW) - Denver (DEN)
  • Norfolk (ORF) - Baltimore (BWI)
  • Phoenix Sky Harbor (PHX) - Washington Dulles (IAD)
  • Rochester (ROC) - Tampa (TPA)
  • Sacramento (SMF) - Denver (DEN)
  • Sacramento (SMF) - Saint Louis (STL)
  • Sacramento (SMF) - San Diego (SAN)
  • Sacramento (SMF) - Seattle-Tacoma (SEA)
  • San Diego (SAN) - Saint Louis (STL)
  • San Francisco (SFO) - Denver (DEN)
  • San Francisco (SFO) - Hayden (HDN)
  • Seattle-Tacoma (SEA) - Denver (DEN)
All Southwest Airlines flights
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