Swiss flights from Seattle-Tacoma (SEA) to Chicago O'Hare (ORD).

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon-Wed,Fri-Sun 10:52 Seattle-Tacoma (SEA) 17:00 Chicago O'Hare (ORD) 1
Swiss LX 3255 Non-stop Airbus A320 (320) 4:08 Valid until 2026-01-04
Codeshare flight, operated by United Airlines.(UA 747)
Mon 10:52 Seattle-Tacoma (SEA) 17:00 Chicago O'Hare (ORD) 1
Swiss LX 3255 Non-stop Airbus A319 (319) 4:08 Operates only on 2026-01-05
Codeshare flight, operated by United Airlines.(UA 747)
Daily 10:52 Seattle-Tacoma (SEA) 17:05 Chicago O'Hare (ORD) 1
Swiss LX 3255 Non-stop Airbus A321neo (32Q) 4:13 Effective 2026-04-30 through 2026-05-20
Codeshare flight, operated by United Airlines.(UA 2109)
Daily 10:55 Seattle-Tacoma (SEA) 17:00 Chicago O'Hare (ORD) 1
Swiss LX 3255 Non-stop Boeing 737 MAX 9 (7M9) 4:05 Effective 2026-02-12 through 2026-03-04
Codeshare flight, operated by United Airlines.(UA 1398Z)
Daily 10:55 Seattle-Tacoma (SEA) 17:00 Chicago O'Hare (ORD) 1
Swiss LX 3255 Non-stop Boeing 737-900 (739) 4:05 Effective 2026-03-05 through 2026-03-28
Codeshare flight, operated by United Airlines.(UA 747Z)
Daily 10:55 Seattle-Tacoma (SEA) 17:06 Chicago O'Hare (ORD) 1
Swiss LX 3255 Non-stop Boeing 737-800 (738) 4:11 Effective 2026-03-29 through 2026-04-29
Codeshare flight, operated by United Airlines.(UA 464)
Thu 10:57 Seattle-Tacoma (SEA) 17:02 Chicago O'Hare (ORD) 1
Swiss LX 3255 Non-stop Boeing 737-800 (738) 4:05 Valid until 2026-01-01
Codeshare flight, operated by United Airlines.(UA 747)
Daily 10:58 Seattle-Tacoma (SEA) 17:05 Chicago O'Hare (ORD) 1
Swiss LX 3255 Non-stop Boeing 737-800 (738) 4:07 Effective 2026-01-07 through 2026-01-17
Codeshare flight, operated by United Airlines.(UA 2467)
Mon,Sun 10:58 Seattle-Tacoma (SEA) 17:03 Chicago O'Hare (ORD) 1
Swiss LX 3255 Non-stop Boeing 737-800 (738) 4:05 Effective 2026-01-18 through 2026-01-19
Codeshare flight, operated by United Airlines.(UA 2467)
Daily 10:58 Seattle-Tacoma (SEA) 17:05 Chicago O'Hare (ORD) 1
Swiss LX 3255 Non-stop Boeing 737-800 (738) 4:07 Effective 2026-01-20 through 2026-02-11
Codeshare flight, operated by United Airlines.(UA 2467)
Tue 11:00 Seattle-Tacoma (SEA) 17:04 Chicago O'Hare (ORD) 1
Swiss LX 3255 Non-stop Boeing 737-900 (739) 4:04 Operates only on 2026-01-06
Codeshare flight, operated by United Airlines.(UA 2467Z)
Daily 11:00 Seattle-Tacoma (SEA) 17:05 Chicago O'Hare (ORD) 1
Swiss LX 3255 Non-stop Boeing 737-900 (739) 4:05 Effective from 2026-05-21
Codeshare flight, operated by United Airlines.(UA 1393)
Daily 07:00 Seattle-Tacoma (SEA) 13:00 Chicago O'Hare (ORD) 1
Swiss LX 3295 Non-stop Boeing 737 MAX 8 (7M8) 4:00 Effective 2026-05-21 through 2026-10-24
Codeshare flight, operated by United Airlines.(UA 2284)




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Swiss flights from Seattle-Tacoma (SEA) to Chicago O'Hare (ORD).
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Swiss LX3255
10:52
Seattle-Tacoma (SEA)

17:00
Chicago O'Hare (ORD) 1
Valid until 2026-01-04
Mon
Tue
Wed
Thu
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 747)
Duration: 4:08, non-stop
Airbus A320 (320)
Direct Codeshare Flights:
Swiss LX3255
10:52
Seattle-Tacoma (SEA)

17:00
Chicago O'Hare (ORD) 1
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 747)
Duration: 4:08, non-stop
Airbus A319 (319)
Direct Codeshare Flights:
Swiss LX3255
10:52
Seattle-Tacoma (SEA)

17:05
Chicago O'Hare (ORD) 1
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2109)
Duration: 4:13, non-stop
Airbus A321neo (32Q)
Direct Codeshare Flights:
Swiss LX3255
10:55
Seattle-Tacoma (SEA)

17:00
Chicago O'Hare (ORD) 1
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.(UA 1398Z)
Duration: 4:05, non-stop
Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Swiss LX3255
10:55
Seattle-Tacoma (SEA)

17:00
Chicago O'Hare (ORD) 1
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.(UA 747Z)
Duration: 4:05, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Swiss LX3255
10:55
Seattle-Tacoma (SEA)

17:06
Chicago O'Hare (ORD) 1
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 464)
Duration: 4:11, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Swiss LX3255
10:57
Seattle-Tacoma (SEA)

17:02
Chicago O'Hare (ORD) 1
Valid until 2026-01-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 747)
Duration: 4:05, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Swiss LX3255
10:58
Seattle-Tacoma (SEA)

17:05
Chicago O'Hare (ORD) 1
Effective 2026-01-07 through 2026-01-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2467)
Duration: 4:07, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Swiss LX3255
10:58
Seattle-Tacoma (SEA)

17:03
Chicago O'Hare (ORD) 1
Effective 2026-01-18 through 2026-01-19
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 2467)
Duration: 4:05, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Swiss LX3255
10:58
Seattle-Tacoma (SEA)

17:05
Chicago O'Hare (ORD) 1
Effective 2026-01-20 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2467)
Duration: 4:07, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Swiss LX3255
11:00
Seattle-Tacoma (SEA)

17:04
Chicago O'Hare (ORD) 1
Operates only on 2026-01-06
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines.(UA 2467Z)
Duration: 4:04, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Swiss LX3255
11:00
Seattle-Tacoma (SEA)

17:05
Chicago O'Hare (ORD) 1
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1393)
Duration: 4:05, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Swiss LX3295
07:00
Seattle-Tacoma (SEA)

13:00
Chicago O'Hare (ORD) 1
Effective 2026-05-21 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2284)
Duration: 4:00, non-stop
Boeing 737 MAX 8 (7M8)
  • A domestic route departing from the Seattle-Tacoma airport (SEA) and arriving at Chicago O'Hare airport (ORD).
  • The flight distance is 1715 miles, or 2760 km.
  • The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-6 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
  • For direct flights, the flight time varies between 4:00 and 4:13.
All SEA-ORD flights
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