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

Return flights

20 Aug - 03 Sep	KLM
30 Aug - 06 Sep	KLM
24 Aug - 07 Sep	KLM
29 Aug - 05 Sep	KLM
28 Aug - 16 Sep	Air France
27 Aug - 08 Sep	Air France
28 Aug - 04 Sep	Air France
22 Aug - 05 Sep	KLM
22 Aug - 07 Sep	KLM
21 Aug - 12 Sep	British Airways
20 Aug - 24 Aug	KLM
20 Aug - 30 Aug	KLM
21 Aug - 30 Aug	Aer Lingus
22 Aug - 30 Aug	KLM
22 Aug - 29 Aug	KLM
05 Aug - 16 Aug	Aer Lingus
12 Aug - 26 Aug	Aer Lingus
11 Aug - 24 Aug	Aer Lingus
07 Aug - 16 Aug	Aer Lingus
08 Aug - 20 Aug	Iberia

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

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Cheapest return flights from London to Calgary in August from $752

Return flights