Air Canada Flight 856 Deals & Information (2026/2027)

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Air Canada Flight 856 Route Deals From $375

The cheapest prices found with in the last 7 days for return flights were $638 and $375 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Jun 15 - Mon, Jun 22
YYZ
Pearson Intl.
LHR
Heathrow
$638 Roundtrip, found 3 hours ago
$638
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Mon, Jun 15 from Pearson Intl. to Heathrow, returning Mon, Jun 22, priced at $638 found 3 hours ago
Tue, Sep 22 - Mon, Sep 28
YYZ
Pearson Intl.
LHR
Heathrow
$647 Roundtrip, just found
$647
Roundtrip
just found
Select Air Canada flight, departing Tue, Sep 22 from Pearson Intl. to Heathrow, returning Mon, Sep 28, priced at $647 just found
Thu, Jun 11 - Fri, Jun 19
YYZ
Pearson Intl.
LHR
Heathrow
$648 Roundtrip, found 1 hour ago
$648
Roundtrip
found 1 hour ago
Select Air Canada flight, departing Thu, Jun 11 from Pearson Intl. to Heathrow, returning Fri, Jun 19, priced at $648 found 1 hour ago
Mon, Jun 1 - Sun, Jun 7
YYZ
Pearson Intl.
LHR
Heathrow
$651 Roundtrip, found 2 hours ago
$651
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Mon, Jun 1 from Pearson Intl. to Heathrow, returning Sun, Jun 7, priced at $651 found 2 hours 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.