Air Canada Flight AC858 Deals & Information (2025/2026)

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Air Canada Flight 858 Route Deals From $369

The cheapest prices found with in the last 7 days for return flights were $484 and $369 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, May 17 - Sat, May 24
YYZ
Pearson Intl.
LHR
Heathrow
$484 Roundtrip, found 1 day ago
$484
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sat, May 17 from Pearson Intl. to Heathrow, returning Sat, May 24, priced at $484 found 1 day ago
Sat, May 24 - Mon, Jun 2
YYZ
Pearson Intl.
LHR
Heathrow
$539 Roundtrip, found 15 hours ago
$539
Roundtrip
found 15 hours ago
Select Air Canada flight, departing Sat, May 24 from Pearson Intl. to Heathrow, returning Mon, Jun 2, priced at $539 found 15 hours ago
Thu, Jun 5 - Sun, Jun 15
YYZ
Pearson Intl.
LHR
Heathrow
$539 Roundtrip, just found
$539
Roundtrip
just found
Select Air Canada flight, departing Thu, Jun 5 from Pearson Intl. to Heathrow, returning Sun, Jun 15, priced at $539 just found
Mon, May 19 - Mon, May 26
YYZ
Pearson Intl.
LHR
Heathrow
$575 Roundtrip, just found
$575
Roundtrip
just found
Select Air Canada flight, departing Mon, May 19 from Pearson Intl. to Heathrow, returning Mon, May 26, priced at $575 just found