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

Return flights

26 Aug - 05 Sep	KLM
20 Aug - 05 Sep	KLM
26 Aug - 09 Sep	KLM
26 Aug - 07 Sep	KLM
25 Aug - 08 Sep	KLM
05 Aug - 13 Aug	WestJet
12 Aug - 26 Aug	WestJet
10 Aug - 24 Aug	WestJet
17 Aug - 29 Aug	WestJet
03 Aug - 13 Aug	WestJet
03 Aug - 17 Aug	WestJet
03 Aug - 16 Aug	WestJet
10 Aug - 20 Aug	WestJet
11 Aug - 27 Aug	WestJet
12 Aug - 25 Aug	WestJet
17 Aug - 01 Sep	WestJet
17 Aug - 07 Sep	WestJet
26 Aug - 02 Sep	WestJet
31 Aug - 07 Sep	WestJet
31 Aug - 13 Sep	KLM

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 621€

Return flights