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

Return flights

20 Aug - 04 Sep	KLM
31 Aug - 14 Sep	KLM
31 Aug - 13 Sep	KLM
31 Aug - 08 Sep	KLM
29 Aug - 12 Sep	KLM
30 Aug - 14 Sep	KLM
23 Aug - 07 Sep	KLM
30 Aug - 05 Sep	KLM
23 Aug - 03 Sep	KLM
23 Aug - 04 Sep	KLM
08 Aug - 18 Aug	British Airways
08 Aug - 17 Aug	British Airways
09 Aug - 24 Aug	British Airways
01 Aug - 31 Aug	British Airways
09 Aug - 18 Aug	British Airways
05 Aug - 13 Aug	British Airways
04 Aug - 25 Aug	British Airways
04 Aug - 11 Aug	British Airways
04 Aug - 18 Aug	British Airways
04 Aug - 10 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 641€

Return flights