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

Return flights

31 Aug - 14 Sep	KLM
29 Aug - 08 Sep	KLM
31 Aug - 06 Sep	KLM
25 Aug - 05 Sep	KLM
24 Aug - 07 Sep	KLM
27 Aug - 06 Sep	KLM
29 Aug - 03 Sep	KLM
30 Aug - 04 Sep	KLM
26 Aug - 02 Sep	KLM
29 Aug - 27 Sep	American Airlines
03 Aug - 24 Aug	TAP
21 Aug - 31 Aug	Aer Lingus
03 Aug - 16 Aug	TAP
21 Aug - 28 Aug	Aer Lingus
25 Aug - 31 Aug	Aer Lingus
23 Aug - 29 Aug	Aer Lingus
25 Aug - 30 Aug	Aer Lingus
22 Aug - 30 Aug	Aer Lingus
22 Aug - 29 Aug	British Airways
05 Aug - 12 Aug	British Airways

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 626€

Return flights