AC856 distance and great-circle path
AC856 covers 5,707 km, or 3,546 miles. That makes it a long-haul flight, a widebody route with a full night's flying time. Of the 255 routes we track, it ranks 149 by distance.
The plane leaves Toronto heading north-east. On the map above, the line looks curved. That is normal. The shortest path over a round planet never looks straight on a flat screen. Our guide explains how the YYZ–LHR route appears on a tracker map.
Why AC856 block time differs from cruise time
The schedule allows 7.0 hours from gate to gate. That works out to about 815 km/h. A Boeing 777-300ER cruises faster than that. The gap is taxi time, climbing, descending and holding.
Flying east, this route usually picks up tailwinds high up. The flight back west normally takes longer, even though the distance is identical. See how timing changes the trip in our red-eye flight guide.
Can the Boeing 777-300ER comfortably fly AC856?
Not at all. At roughly 42% of its range, this is an easy trip for a Boeing 777-300ER. The airline picked it for cabin size, not distance. The full numbers are on our aircraft page for the Boeing 777-300ER.
What to know about AC856
- Time change: you land 5 hours ahead of the time you left. That is enough to cause jet lag. Here is how pilots handle it.