Great-circle route IAH ↔ YYZ. Faint dots are other airports, for geographic context. Download this map — free to reuse with a link back to this page.
Frequencies below are per direction, from our most recent schedule sample.
| Direction | Frequency | Days | Airlines |
|---|---|---|---|
| IAH → YYZ Houston to Toronto |
28/wk | Daily | Air Canada, United Airlines |
| YYZ → IAH Toronto to Houston |
28/wk | Daily | Air Canada, United Airlines |
Where a direction shows “—” we track it as an operating nonstop but hold no schedule sample for it — we would rather show nothing than guess.
In 2025, airlines reported 321,387 passengers on 2,782 flights between IAH and YYZ — about 881 a day — filling 83% of the 386,732 seats flown. United Air Lines Inc. carried the most passengers (54%).
Source: US DOT T-100 segment reports — actual airline-reported traffic, scheduled service only, both directions combined. Cargo and charter flights excluded.
2 airlines fly the IAH–YYZ nonstop, including Air Canada, United Airlines.
Recent scheduled departures on this route have used the Boeing 737, Airbus A320, Boeing 737-700, Airbus A319.
Aircraft assignments change by season and by time of day.
The distance between George Bush Intercontinental Houston Airport and Lester B. Pearson International Airport is 1,280 miles, or 2,060 kilometres.
| Great-circle distance | 1,280 mi |
| Kilometres | 2,060 km |
| Nautical miles | 1,112 nmi |
Measured airport to airport. The actual track is longer — aircraft follow airways, avoid restricted airspace and route around weather.
Yes. 2 airlines fly the route nonstop, with about 56 departures a week across both directions. The route is in our live nonstop dataset, last seeded 2026-07-29.
About 3h 05m in the air. That is a great-circle estimate from the 1,280-mile distance, not a scheduled block time — an airline's published time will differ by roughly 15 to 45 minutes depending on routing, winds and taxi.
About 28 a week from Houston to Toronto and 28 a week from Toronto to Houston, from our most recent schedule sample.
Air Canada, United Airlines.
In 2025, airlines reported 321,387 passengers on 2,782 scheduled flights between IAH and YYZ — about 881 a day — filling 83% of the seats flown. Source: US DOT T-100 segment reports, both directions combined.
Recent scheduled departures have used the Boeing 737, Airbus A320, Boeing 737-700, Airbus A319. Assignments change by season and by time of day.
