AirHint found the following cheapest return flights from Calgary (YYC) to London (LHR) in August 2026 (see full year).

Return flights

20 Aug - 04 Sep	WestJet	direct
28 Aug - 10 Sep	WestJet
28 Aug - 10 Sep	WestJet	direct
24 Aug - 04 Sep	WestJet	direct
21 Aug - 04 Sep	WestJet	direct
20 Aug - 31 Aug	WestJet
07 Aug - 16 Aug	WestJet	direct
01 Aug - 17 Aug	WestJet	direct
06 Aug - 27 Aug	WestJet	direct
19 Aug - 07 Sep	WestJet
08 Aug - 24 Aug	WestJet	direct
10 Aug - 25 Aug	Air Canada
10 Aug - 26 Aug	Air Canada
10 Aug - 19 Aug	Air Canada
11 Aug - 25 Aug	Air Canada
25 Aug - 31 Aug	WestJet
19 Aug - 07 Sep	WestJet	direct
31 Aug - 07 Sep	Air Canada
27 Aug - 10 Sep	Air Canada
23 Aug - 08 Sep	WestJet	direct

Also check the deals for one-way flights from Calgary to London in August.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Calgary to London in August from $846

Return flights