Swiss flights from San Francisco (SFO) to Seattle-Tacoma (SEA).

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon,Wed-Sun 18:25 San Francisco (SFO) 3 20:57 Seattle-Tacoma (SEA)
Swiss LX 3256 Non-stop Airbus A320 (320) 2:32 Effective 2026-04-30 through 2026-05-20
Codeshare flight, operated by United Airlines.(UA 1243)
Daily 18:25 San Francisco (SFO) 3 20:50 Seattle-Tacoma (SEA)
Swiss LX 3256 Non-stop Airbus A320 (320) 2:25 Effective 2026-08-11 through 2026-10-05
Codeshare flight, operated by United Airlines.(UA 1243)
Mon,Wed-Sun 18:25 San Francisco (SFO) 3 20:50 Seattle-Tacoma (SEA)
Swiss LX 3256 Non-stop Airbus A320 (320) 2:25 Effective 2026-10-07 through 2026-10-24
Codeshare flight, operated by United Airlines.(UA 1243)
Thu-Sat 18:40 San Francisco (SFO) 3 20:58 Seattle-Tacoma (SEA)
Swiss LX 3256 Non-stop Airbus A320 (320) 2:18 Effective 2026-03-05 through 2026-03-07
Codeshare flight, operated by United Airlines.(UA 1434)
Mon,Wed-Sun 18:40 San Francisco (SFO) 3 21:12 Seattle-Tacoma (SEA)
Swiss LX 3256 Non-stop Airbus A320 (320) 2:32 Effective 2026-03-29 through 2026-04-29
Codeshare flight, operated by United Airlines.(UA 1243)
Mon,Wed-Sun 18:41 San Francisco (SFO) 3 20:48 Seattle-Tacoma (SEA)
Swiss LX 3256 Non-stop Airbus A320 (320) 2:07 Effective 2026-05-21 through 2026-06-01
Codeshare flight, operated by United Airlines.(UA 1243)
Daily 18:41 San Francisco (SFO) 3 20:48 Seattle-Tacoma (SEA)
Swiss LX 3256 Non-stop Airbus A320 (320) 2:07 Effective 2026-06-02 through 2026-08-10
Codeshare flight, operated by United Airlines.(UA 1243)
Daily 18:44 San Francisco (SFO) 3 21:01 Seattle-Tacoma (SEA)
Swiss LX 3256 Non-stop Airbus A320 (320) 2:17 Effective 2026-02-12 through 2026-03-04
Codeshare flight, operated by United Airlines.(UA 2019)
Daily 18:55 San Francisco (SFO) 3 21:07 Seattle-Tacoma (SEA)
Swiss LX 3256 Non-stop Airbus A319 (319) 2:12 Valid until 2026-01-05
Codeshare flight, operated by United Airlines.(UA 2019)
Daily 18:55 San Francisco (SFO) 3 21:12 Seattle-Tacoma (SEA)
Swiss LX 3256 Non-stop Boeing 737-800 (738) 2:17 Effective 2026-01-06 through 2026-01-19
Codeshare flight, operated by United Airlines.(UA 2019)
Daily 18:55 San Francisco (SFO) 3 21:12 Seattle-Tacoma (SEA)
Swiss LX 3256 Non-stop Boeing 737-800 (738) 2:17 Effective 2026-01-21 through 2026-02-02
Codeshare flight, operated by United Airlines.(UA 2019)
Tue 18:55 San Francisco (SFO) 3 21:12 Seattle-Tacoma (SEA)
Swiss LX 3256 Non-stop Boeing 737-900 (739) 2:17 Operates only on 2026-02-03
Codeshare flight, operated by United Airlines.(UA 2019)
Daily 18:55 San Francisco (SFO) 3 21:12 Seattle-Tacoma (SEA)
Swiss LX 3256 Non-stop Boeing 737-800 (738) 2:17 Effective 2026-02-04 through 2026-02-11
Codeshare flight, operated by United Airlines.(UA 2019)
Mon,Wed-Sun 20:58 San Francisco (SFO) 3 23:29 Seattle-Tacoma (SEA)
Swiss LX 3347 Non-stop Boeing 737-800 (738) 2:31 Effective 2026-04-30 through 2026-05-20
Codeshare flight, operated by United Airlines.(UA 1007)
Mon,Wed-Sun 21:05 San Francisco (SFO) 3 23:36 Seattle-Tacoma (SEA)
Swiss LX 3347 Non-stop Boeing 737-800 (738) 2:31 Effective 2026-03-29 through 2026-04-29
Codeshare flight, operated by United Airlines.(UA 1007)
Daily 21:05 San Francisco (SFO) 3 23:28 Seattle-Tacoma (SEA)
Swiss LX 3347 Non-stop Boeing 737 MAX 9 (7M9) 2:23 Effective 2026-08-11 through 2026-10-05
Codeshare flight, operated by United Airlines.(UA 1007)
Mon,Wed-Sun 21:05 San Francisco (SFO) 3 23:28 Seattle-Tacoma (SEA)
Swiss LX 3347 Non-stop Boeing 737 MAX 9 (7M9) 2:23 Effective 2026-10-07 through 2026-10-24
Codeshare flight, operated by United Airlines.(UA 1007)
Mon,Wed-Fri,Sun 21:15 San Francisco (SFO) 3 23:28 Seattle-Tacoma (SEA)
Swiss LX 3347 Non-stop Airbus A320 (320) 2:13 Effective 2026-03-05 through 2026-03-27
Codeshare flight, operated by United Airlines.(UA 1007)
Daily 21:18 San Francisco (SFO) 3 23:30 Seattle-Tacoma (SEA)
Swiss LX 3347 Non-stop Airbus A320 (320) 2:12 Effective 2026-02-12 through 2026-03-04
Codeshare flight, operated by United Airlines.(UA 1007)
Daily 21:22 San Francisco (SFO) 3 23:21 Seattle-Tacoma (SEA)
Swiss LX 3347 Non-stop Boeing 737-800 (738) 1:59 Effective from 2026-10-25
Codeshare flight, operated by United Airlines.(UA 1007)




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Swiss flights from San Francisco (SFO) to Seattle-Tacoma (SEA).
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Swiss LX3256
18:25
San Francisco (SFO) 3

20:57
Seattle-Tacoma (SEA)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1243)
Duration: 2:32, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Swiss LX3256
18:25
San Francisco (SFO) 3

20:50
Seattle-Tacoma (SEA)
Effective 2026-08-11 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1243)
Duration: 2:25, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Swiss LX3256
18:25
San Francisco (SFO) 3

20:50
Seattle-Tacoma (SEA)
Effective 2026-10-07 through 2026-10-24
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1243)
Duration: 2:25, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Swiss LX3256
18:40
San Francisco (SFO) 3

20:58
Seattle-Tacoma (SEA)
Effective 2026-03-05 through 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 1434)
Duration: 2:18, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Swiss LX3256
18:40
San Francisco (SFO) 3

21:12
Seattle-Tacoma (SEA)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1243)
Duration: 2:32, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Swiss LX3256
18:41
San Francisco (SFO) 3

20:48
Seattle-Tacoma (SEA)
Effective 2026-05-21 through 2026-06-01
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1243)
Duration: 2:07, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Swiss LX3256
18:41
San Francisco (SFO) 3

20:48
Seattle-Tacoma (SEA)
Effective 2026-06-02 through 2026-08-10
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1243)
Duration: 2:07, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Swiss LX3256
18:44
San Francisco (SFO) 3

21:01
Seattle-Tacoma (SEA)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2019)
Duration: 2:17, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Swiss LX3256
18:55
San Francisco (SFO) 3

21:07
Seattle-Tacoma (SEA)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2019)
Duration: 2:12, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Swiss LX3256
18:55
San Francisco (SFO) 3

21:12
Seattle-Tacoma (SEA)
Effective 2026-01-06 through 2026-01-19
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2019)
Duration: 2:17, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Swiss LX3256
18:55
San Francisco (SFO) 3

21:12
Seattle-Tacoma (SEA)
Effective 2026-01-21 through 2026-02-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2019)
Duration: 2:17, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Swiss LX3256
18:55
San Francisco (SFO) 3

21:12
Seattle-Tacoma (SEA)
Operates only on 2026-02-03
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 2019)
Duration: 2:17, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Swiss LX3256
18:55
San Francisco (SFO) 3

21:12
Seattle-Tacoma (SEA)
Effective 2026-02-04 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2019)
Duration: 2:17, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Swiss LX3347
20:58
San Francisco (SFO) 3

23:29
Seattle-Tacoma (SEA)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1007)
Duration: 2:31, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Swiss LX3347
21:05
San Francisco (SFO) 3

23:36
Seattle-Tacoma (SEA)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1007)
Duration: 2:31, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Swiss LX3347
21:05
San Francisco (SFO) 3

23:28
Seattle-Tacoma (SEA)
Effective 2026-08-11 through 2026-10-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1007)
Duration: 2:23, non-stop
Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Swiss LX3347
21:05
San Francisco (SFO) 3

23:28
Seattle-Tacoma (SEA)
Effective 2026-10-07 through 2026-10-24
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1007)
Duration: 2:23, non-stop
Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Swiss LX3347
21:15
San Francisco (SFO) 3

23:28
Seattle-Tacoma (SEA)
Effective 2026-03-05 through 2026-03-27
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 1007)
Duration: 2:13, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Swiss LX3347
21:18
San Francisco (SFO) 3

23:30
Seattle-Tacoma (SEA)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1007)
Duration: 2:12, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Swiss LX3347
21:22
San Francisco (SFO) 3

23:21
Seattle-Tacoma (SEA)
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1007)
Duration: 1:59, non-stop
Boeing 737-800 (738)
  • A domestic route departing from the San Francisco airport (SFO) and arriving at Seattle-Tacoma airport (SEA).
  • The flight distance is 679 miles, or 1092 km.
  • The timezone of both the departure and the arrival airports is UTC-8 . Current time at both airports is (loading...).
  • For direct flights, the flight time varies between 1:59 and 2:32.
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