Air Canada Flight 851 Deals & Information (2026/2027)

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Air Canada Flight 851 Route Deals From $1,045

The cheapest prices found with in the last 7 days for return flights were $543 and $1,045 for one-way flights to Calgary Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Nov 25 - Thu, Dec 3
LHR
Heathrow
YYC
Calgary Intl.
$543 Roundtrip, found 21 hours ago
$543
Roundtrip
found 21 hours ago
Select Air Canada flight, departing Wed, Nov 25 from Heathrow to Calgary Intl., returning Thu, Dec 3, priced at $543 found 21 hours ago
Fri, Nov 6 - Fri, Nov 13
LHR
Heathrow
YYC
Calgary Intl.
$544 Roundtrip, found 2 days ago
$544
Roundtrip
found 2 days ago
Select Air Canada flight, departing Fri, Nov 6 from Heathrow to Calgary Intl., returning Fri, Nov 13, priced at $544 found 2 days ago
Thu, Nov 12 - Sat, Nov 21
LHR
Heathrow
YYC
Calgary Intl.
$545 Roundtrip, found 2 days ago
$545
Roundtrip
found 2 days ago
Select Air Canada flight, departing Thu, Nov 12 from Heathrow to Calgary Intl., returning Sat, Nov 21, priced at $545 found 2 days ago
Wed, Oct 28 - Tue, Nov 3
LHR
Heathrow
YYC
Calgary Intl.
$545 Roundtrip, found 4 days ago
$545
Roundtrip
found 4 days ago
Select Air Canada flight, departing Wed, Oct 28 from Heathrow to Calgary Intl., returning Tue, Nov 3, priced at $545 found 4 days ago
Wed, Nov 25 - Thu, Dec 3
LHR
Heathrow
YYC
Calgary Intl.
$546 Roundtrip, found 21 hours ago
$546
Roundtrip
found 21 hours ago
Select Air Canada flight, departing Wed, Nov 25 from Heathrow to Calgary Intl., returning Thu, Dec 3, priced at $546 found 21 hours ago
Wed, Nov 25 - Thu, Dec 3
LHR
Heathrow
YYC
Calgary Intl.
$551 Roundtrip, found 21 hours ago
$551
Roundtrip
found 21 hours ago
Select Air Canada flight, departing Wed, Nov 25 from Heathrow to Calgary Intl., returning Thu, Dec 3, priced at $551 found 21 hours ago
Wed, Nov 25 - Thu, Dec 3
LHR
Heathrow
YYC
Calgary Intl.
$554 Roundtrip, found 21 hours ago
$554
Roundtrip
found 21 hours ago
Select Air Canada flight, departing Wed, Nov 25 from Heathrow to Calgary Intl., returning Thu, Dec 3, priced at $554 found 21 hours ago