The sector is held by Air Canada, Alaska Airlines and United Airlines.
Airport pair · hand carry reference
YYZ Toronto to SEA Seattle
Toronto Pearson, Canada, to Seattle Tacoma International, the United States. Computed from the scheduled network held on 2026-09-07.
- Nonstop
- About twice a day
- Great circle
- 3,307 km
- Block, estimated
- 4h 29m
- Door to door
- 11h 14m
What YYZ to SEA looks like
The YYZ to SEA sector, the carriers on it and the flying time, before anything is promised to anybody.
Toronto YYZ to Seattle SEA is a medium haul sector of 3,307 km by great circle, flown nonstop about twice a day.
At the cruise speed this site models for 3,307 km, 880 km an hour, and thirty minutes of taxi at the two ends, the flight blocks at about 4h 29m.
Toronto YYZ is a major hub in the network held here, 198 scheduled destinations and 603.3 departures a day. Seattle SEA has 145 destinations and 717.9 departures a day.
Seattle is 3 hours behind of Toronto all year.
The pair sits inside the Americas, a corridor where the site already publishes 13 written lanes that go into customs and ground detail this page does not.
Who flies the sector, and how often
Average daily frequencies on YYZ to SEA from the scheduled route statistics, both directions, with the operating carriers named.
| Direction | Flights a day | Flights a week | Operated by |
|---|---|---|---|
| YYZ to SEA | 2.29 | 16 | Air Canada, Alaska Airlines, United Airlines |
| SEA to YYZ | 2 | 14 | Air Canada, Alaska Airlines |
3 carriers are recorded on the sector, so a missed departure is normally a rebooking rather than a lost day.
Between them the two directions put about 30 departures a week on YYZ to SEA, which is the number that decides whether a seat can be found today or on Thursday.
The clock from collection to signature
The same ground timings the route calculator starts from, applied to the 4h 29m block time on YYZ to SEA. Change any of them in the tool further down and the total moves with them.
| Stage | Allowed | Elapsed |
|---|---|---|
| Collection and the run to YYZ | 90 min | 1h 30m |
| At YYZ before departure | 180 min | 4h 30m |
| YYZ to SEA in the air, estimated | 269 min | 8h 59m |
| Formalities at SEA | 90 min | 10h 29m |
| Delivery run in Seattle | 45 min | 11h 14m |
| Door to door | 674 min | 11h 14m |
On the desk standard ground timings, ninety minutes to collect and reach the airport, three hours at the airport before departure, ninety minutes of arrival formalities and a forty five minute delivery run, the door to door figure for YYZ to SEA is 11h 14m.
A courier who leaves Toronto at 09:00 local is on the ground in Seattle at about 10:29 local and at the door by 12:44 the same day.
Working backwards from a six in the evening handover in Seattle, the last useful departure from Toronto is around 14:16 local.
When the nonstop does not work
Every airport that joins the two ends, ranked by when they land, among the ones whose weaker leg is dependable enough to plan on. Connection time is allowed for the size of the hub. 62 of them join YYZ to SEA.
| Connecting at | YYZ to hub, flights a day | Hub to SEA, flights a day | Track, km | Estimated, gate to gate |
|---|---|---|---|---|
| Victoria YYJ | 4.43 | 3.57 | 3,527 | 6h 18m |
| Detroit DTW | 7.43 | 8.14 | 3,437 | 6h 29m |
| Minneapolis MSP | 5.14 | 10.71 | 3,334 | 6h 30m |
| Vancouver YVR | 36.71 | 14.86 | 3,550 | 6h 35m |
| Edmonton YEG | 18.57 | 1.71 | 3,587 | 6h 35m |
| Cleveland CLE | 3.14 | 2.29 | 3,555 | 6h 36m |
One nonstop a day means one chance a day, so the connections below are what a consignment that arrives at YYZ in the afternoon actually flies on.
62 airports connect the two ends on the scheduled network held here. The quickest of the dependable ones is Victoria YYJ, where the weaker of the two legs still runs 3.6 times a day.
Through YYJ the routing covers 3,527 km against the 3,307 km nonstop track and takes about 6h 18m in the air and on the ground at the hub, allowing 60 minutes to connect at an airport of that size.
That is only 1h 49m more than the nonstop, which is close enough that a connection is worth taking when the nonstop is full or badly timed.
Behind it, Detroit DTW at 6h 29m and Minneapolis MSP at 6h 30m hold the same connection, so a booking has three hubs to try before it has to wait for the nonstop.
If nothing suitable leaves Seattle, Victoria YYJ is 157 km away by great circle and carries 22 scheduled destinations of its own, which is usually a shorter road transfer than a lost day.
Industry within reach of the two ends
Public manufacturing and research sites whose logistics run through YYZ or SEA. Listed as industrial geography, not as customers of anyone.
- Boeing, Everett and RentonWidebody and 737 final assembly. A European supplier base and an American line, eight time zones apart. Logistics through Seattle SEA.
Plan Toronto to Seattle yourself
The same tool the dispatchers use, open to anybody and free. It is loaded with this pair already. Change either end, add a stopover or a preferred airline, and it works out the connection, the transit and the door to door clock, with the real departures underneath. Put it on your own site if it is useful to you.
min
min
min
min
Restrictions
Where this came from, and where to look next
- Carriers and frequencies: AeroDataBox scheduled route statistics, retrieved 2026-09-07. Average daily flights, not a timetable.
- Distances: great circle from published coordinates. They read short against a flown track, which is why the block time above applies a factor to them.
- Block and connection times: the same model the route calculator lower down this page runs, at the same rounding.
- Restrictions: the airport notes file, checked 2026-09-07.
- Industrial sites: public company information. Nothing here says or implies that any company named is a customer of any courier operator.
Who publishes this. OnBoard Courier is a placement desk in Dubai. An assignment is carried out by a vetted partner operator, with the desk as the single point of contact from the quote to the signature. This page exists because our own dispatchers need the answer for YYZ to SEA in the twenty minutes before a promise is made, and a reference only one operator can read is not a reference. Free to read, quote and cite. Found an error? Tell us and we will correct it.
If you need something moved rather than looked up, the desk prices a hand carry in fifteen minutes.
- The YYZ airport entry
- The SEA airport entry
- Hand carry into Canada
- Hand carry into the United States
- The written lane, Abu Dhabi to Toronto
- The written lane, Dubai to Toronto
- The written lane, Toronto to Frankfurt
- The route calculator
More pairs through YYZ and SEA: San Francisco to Seattle, Atlanta to Seattle, London to Seattle, Seattle to Boston, Seattle to Los Angeles, Detroit to Seattle, Seattle to Chicago, Seattle to Seoul.