AirHint found the following cheapest one-way flights from London (LHR) to Calgary (YYC) in August 2025 (see full year).

One-Way flights

28 Aug	Scandinavian Airlines
27 Aug	British Airways
20 Aug	British Airways
21 Aug	Vueling Airlines
19 Aug	Icelandair
22 Aug	Icelandair
18 Aug	SWISS
17 Aug	British Airways
29 Aug	Vueling Airlines
24 Aug	Vueling Airlines

Also check the deals for return 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 one-way flights from London to Calgary in August from 292€

One-Way flights