How long is flight AC1?

The YYZ to LHR route is the basis for the schedule. View the full route forecast and typical duration on the Turbcast route page.

Flight AC1

AC1 Turbulence ForecastAir Canada · YYZ → LHR

About flight AC1

Airline: Air Canada (AC)
Route: YYZ → LHR
Typical Aircraft: B789
Distance: 5,707 km
Duration: 7h 08m
Cruise Altitude: FL390

See today’s turbulence forecast

Air Canada AC1 flies the jet-stream exposed corridor from Toronto to London. Conditions change hour to hour - view the live forecast for your departure date.

View live forecast

Check AC1 on a specific date

Turbulence on the YYZ → LHR route

Jet-stream exposure on this corridor is significant. Long mid-latitude legs mean clear-air turbulence is the dominant source of bumps, typically encountered at cruise altitude. Flying eastbound, aircraft usually benefit from tailwinds near the jet core, which trims flight time - but the edges of the jet are where clear-air turbulence most often sits.

Calmest season: Late spring to early autumn (May-September). The oceanic track sees its strongest jet-stream activity in the northern winter (Nov-Mar), when winds aloft are fastest and clear-air turbulence is more frequent.

Full YYZ to LHR route guide

Frequently asked questions

Is AC1 usually a bumpy flight?

Air Canada AC1 operates between YYZ and LHR. Whether it’s bumpy depends on the day’s weather - Turbcast pulls live NOAA aviation-grade data so you can check the actual forecast for your departure date rather than relying on averages.

What aircraft does AC1 use?

AC1 is typically operated by the B789. Aircraft swaps happen - confirm with your booking before flying.

How long is the YYZ to LHR flight?

Approximately 7h 08m direct, covering 5,707 km at a typical cruise of FL390.

When does AC1 have the smoothest weather?

Historically calmest during Late spring to early autumn (May-September). Forecast accuracy improves as you get closer to departure - within 48 hours the NOAA WAFS model is at peak skill.