Air Canada Flight 856 Deals & Information (2025/2026)

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Air Canada Flight 856 Route Deals From $409

The cheapest prices found with in the last 7 days for return flights were $538 and $409 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, May 24 - Fri, May 30
YYZ
Pearson Intl.
LHR
Heathrow
$538 Roundtrip, just found
$538
Roundtrip
just found
Select Air Canada flight, departing Sat, May 24 from Pearson Intl. to Heathrow, returning Fri, May 30, priced at $538 just found
Sat, May 24 - Fri, May 30
YYZ
Pearson Intl.
LHR
Heathrow
$538 Roundtrip, just found
$538
Roundtrip
just found
Select Air Canada flight, departing Sat, May 24 from Pearson Intl. to Heathrow, returning Fri, May 30, priced at $538 just found
Mon, Jun 2 - Fri, Jun 6
YYZ
Pearson Intl.
LHR
Heathrow
$555 Roundtrip, found 1 hour ago
$555
Roundtrip
found 1 hour ago
Select Air Canada flight, departing Mon, Jun 2 from Pearson Intl. to Heathrow, returning Fri, Jun 6, priced at $555 found 1 hour ago

Frequently asked questions

What route does flight number AC856 take?
Flight number AC856 takes 6 hours and 55 minutes to fly directly from Toronton Pearson to Heathrow Airport (LHR). We all know there’s magic in the destination, but getting there is half the fun!
What terminal does AC856 fly out of?
You’ll likely be climbing aboard the plane at Terminal 1 if you’re traveling on AC856 direct from YYZ to Heathrow Airport.
What kind of plane is on flight number AC856?
Expect to cruise the skies aboard a Boeing 777-300ER if you’re taking off on flight AC856. Nearly all flights from YYZ to LHR use this aircraft model.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your AC856 flight with Travelocity, please visit our Customer Service Portal.