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

Return flights

23 Aug - 06 Sep	KLM
29 Aug - 05 Sep	Air France
22 Aug - 06 Sep	Air France
29 Aug - 13 Sep	Air France
30 Aug - 12 Sep	Delta
03 Aug - 17 Aug	WestJet
10 Aug - 26 Aug	WestJet
03 Aug - 31 Aug	WestJet
05 Aug - 17 Aug	WestJet
03 Aug - 19 Aug	WestJet
29 Aug - 11 Sep	Delta
30 Aug - 11 Sep	Delta
17 Aug - 22 Aug	WestJet
12 Aug - 17 Aug	WestJet
04 Aug - 12 Aug	WestJet
17 Aug - 24 Aug	WestJet
24 Aug - 02 Sep	WestJet
17 Aug - 31 Aug	Ryanair
22 Aug - 05 Sep	WestJet
16 Aug - 07 Sep	WestJet

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 $774

Return flights