Seattle (SEA) to Toronto (YYZ)
Flight time
≈ 4h 55m
Bearing
81° E
Seattle (SEA) to Toronto (YYZ) is 2,055 miles (3,307 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies SEA–YYZ
Filed traffic dataIn May 2026, Alaska Airlines operated the most departures, one of 2 carriers flying nonstop SEA–YYZ; the Boeing 737-900ER was the most common aircraft at 52% of departures; flights ran 87% full.
Departures
63
May 2026
Seats
11,216
both directions
Passengers
9,728
both directions
Load factor
86.7%
RPM ÷ ASM
Who flies SEA–YYZ?
Alaska Airlines operated the most nonstop SEA–YYZ departures in May 2026 (62), one of 2 carriers on the route.
- AS
62 departures · 11,036 seats
Share of departures98.4%87.8%
Load
- DL
1 departures · 180 seats
Share of departures1.6%23.9%
Load
What plane flies SEA–YYZ?
In May 2026, the Boeing 737-900ER flew 52% of SEA–YYZ departures — more than any other aircraft type.
- Boeing 737-900ER
33 departures · 85.9% load
52.4% - Boeing 737 MAX 9
30 departures · 87.7% load
47.6%
How has SEA–YYZ traffic changed?
Nonstop SEA–YYZ departures fell from 120 in June 2025 to 63 in May 2026.
Monthly nonstop SEA–YYZ traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
120 departures · 16,141 passengers
85.4%
Load
July 2025
124 departures · 18,818 passengers
87.8%
Load
August 2025
114 departures · 18,259 passengers
92.1%
Load
September 2025
112 departures · 17,203 passengers
88.5%
Load
October 2025
130 departures · 16,797 passengers
81.5%
Load
November 2025
115 departures · 12,452 passengers
68.7%
Load
December 2025
119 departures · 14,383 passengers
76.3%
Load
January 2026
113 departures · 11,831 passengers
65.8%
Load
February 2026
108 departures · 10,678 passengers
62.9%
Load
March 2026
124 departures · 14,561 passengers
75.0%
Load
April 2026
118 departures · 15,451 passengers
83.0%
Load
May 2026
63 departures · 9,728 passengers
86.7%
Load
By direction
Each direction is filed separately — they rarely match.
SEA → YYZ
89.2% full
32 departures · 5,081 passengers
YYZ → SEA
84.2% full
31 departures · 4,647 passengers
Nonstop SEA–YYZ traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 2026; filings from 2025. Public domain (US Government work).
The airports
Toronto
CA
Toronto Pearson International Airport
Coordinates
43.68°N, 79.63°W
Hemisphere
N · W
Frequently asked
How far is Seattle (SEA) from Toronto (YYZ)?
SEA to YYZ is 2,055 miles (3,307 km / 1,786 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from SEA to YYZ?
A nonstop covers the 2,055-mile great-circle distance in roughly 4h 55m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies SEA–YYZ?
In May 2026, the Boeing 737-900ER flew the largest share of departures (52.4%), followed by the Boeing 737 MAX 9 (47.6%).
What mileage do I earn flying SEA–YYZ?
Distance-based programs credit off the 2,055-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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