United Airlines flights from Seattle-Tacoma (SEA) to Toronto Pearson (YYZ).

Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:
Thu,Fri,Sun 19:34 Seattle-Tacoma (SEA) 07:30 Toronto Pearson (YYZ) 1
United Airlines UA 436 1-stop Boeing 737-800 (738) 8:56 Effective 2026-03-05 through 2026-03-27
The flight arrives 1 day after departure.
Mon 19:35 Seattle-Tacoma (SEA) 07:30 Toronto Pearson (YYZ) 1
United Airlines UA 436 1-stop Airbus A320 (320) 8:55 Effective 2026-03-09 through 2026-03-23
The flight arrives 1 day after departure.
Wed 19:36 Seattle-Tacoma (SEA) 07:30 Toronto Pearson (YYZ) 1
United Airlines UA 436 1-stop Airbus A320 (320) 8:54 Effective 2026-03-11 through 2026-03-25
The flight arrives 1 day after departure.
Direct Codeshare Flights:
Daily 11:15 Seattle-Tacoma (SEA) 19:05 Toronto Pearson (YYZ) 1
United Airlines UA 8031 Non-stop Boeing 737 MAX 8 (7M8) 4:50 Effective 2026-05-01 through 2026-05-31
Codeshare flight, operated by Air Canada.(AC 540)
Daily 11:15 Seattle-Tacoma (SEA) 19:05 Toronto Pearson (YYZ) 1
United Airlines UA 8031 Non-stop Airbus A220-300 (223) 4:50 Effective 2026-06-01 through 2026-06-15
Codeshare flight, operated by Air Canada.(AC 540)
Tue,Wed 11:15 Seattle-Tacoma (SEA) 19:05 Toronto Pearson (YYZ) 1
United Airlines UA 8031 Non-stop Airbus A320 (320) 4:50 Effective 2026-06-16 through 2026-06-17
Codeshare flight, operated by Air Canada.(AC 540)
Daily 11:30 Seattle-Tacoma (SEA) 19:15 Toronto Pearson (YYZ) 1
United Airlines UA 8031 Non-stop Airbus A320 (320) 4:45 Effective 2026-06-18 through 2026-07-31
Codeshare flight, operated by Air Canada.(AC 540)
Daily 11:30 Seattle-Tacoma (SEA) 19:15 Toronto Pearson (YYZ) 1
United Airlines UA 8031 Non-stop Airbus A220-300 (223) 4:45 Effective 2026-08-01 through 2026-09-07
Codeshare flight, operated by Air Canada.(AC 540)
Daily 12:15 Seattle-Tacoma (SEA) 19:57 Toronto Pearson (YYZ) 1
United Airlines UA 8031 Non-stop Boeing 737 MAX 8 (7M8) 4:42 Effective 2026-09-08 through 2026-10-24
Codeshare flight, operated by Air Canada.(AC 540)
Daily 08:00 Seattle-Tacoma (SEA) 15:54 Toronto Pearson (YYZ) 1
United Airlines UA 8244 Non-stop Airbus A220-300 (223) 4:54 Effective 2026-03-29 through 2026-04-30
Codeshare flight, operated by Air Canada.(AC 542)
Daily 08:10 Seattle-Tacoma (SEA) 15:53 Toronto Pearson (YYZ) 1
United Airlines UA 8244 Non-stop Airbus A220-300 (223) 4:43 Valid until 2026-03-28
Codeshare flight, operated by Air Canada.(AC 542)
Daily 08:10 Seattle-Tacoma (SEA) 15:53 Toronto Pearson (YYZ) 1
United Airlines UA 8244 Non-stop Airbus A220-300 (223) 4:43 Effective from 2026-10-25
Codeshare flight, operated by Air Canada.(AC 542)


United Airlines flights from Seattle-Tacoma (SEA) to Toronto Pearson (YYZ).
Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:

Effective 2026-03-05 through 2026-03-27
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 8:56, 1-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.

Non-Direct Flights:

Effective 2026-03-09 through 2026-03-23
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 8:55, 1-stop
Airbus A320 (320)
The flight arrives 1 day after departure.

Non-Direct Flights:

Effective 2026-03-11 through 2026-03-25
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 8:54, 1-stop
Airbus A320 (320)
The flight arrives 1 day after departure.

Direct Codeshare Flights:

Effective 2026-05-01 through 2026-05-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada. (AC 540)
Duration: 4:50, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

Effective 2026-06-01 through 2026-06-15
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada. (AC 540)
Duration: 4:50, non-stop
Airbus A220-300 (223)

Direct Codeshare Flights:

Effective 2026-06-16 through 2026-06-17
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by Air Canada. (AC 540)
Duration: 4:50, non-stop
Airbus A320 (320)

Direct Codeshare Flights:

Effective 2026-06-18 through 2026-07-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada. (AC 540)
Duration: 4:45, non-stop
Airbus A320 (320)

Direct Codeshare Flights:

Effective 2026-08-01 through 2026-09-07
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada. (AC 540)
Duration: 4:45, non-stop
Airbus A220-300 (223)

Direct Codeshare Flights:

Effective 2026-09-08 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada. (AC 540)
Duration: 4:42, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

Effective 2026-03-29 through 2026-04-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada. (AC 542)
Duration: 4:54, non-stop
Airbus A220-300 (223)

Direct Codeshare Flights:

Valid until 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada. (AC 542)
Duration: 4:43, non-stop
Airbus A220-300 (223)

Direct Codeshare Flights:

Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by Air Canada. (AC 542)
Duration: 4:43, non-stop
Airbus A220-300 (223)
  • An international route departing from Seattle-Tacoma airport, United States (SEA) and arriving at Toronto Pearson airport, Canada (YYZ).
  • The flight distance is 2053 miles, or 3304 km.
  • The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-5 . 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.