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

Return flights

14 Jul - 21 Jul	Air Canada
11 Jul - 20 Jul	Iberia
04 Jul - 25 Jul	British Airways
24 Jul - 10 Aug	Air Canada
31 Jul - 03 Aug	Finnair
01 Jul - 08 Jul	Air Canada
01 Jul - 06 Jul	Air Canada
22 Jul - 05 Aug	British Airways
04 Jul - 25 Jul	WestJet	direct
21 Jul - 02 Aug	Air Canada
11 Jul - 20 Jul	WestJet	direct
31 Jul - 03 Aug	WestJet	direct
21 Jul - 02 Aug	WestJet	direct
23 Jul - 30 Jul	Lufthansa
01 Jul - 06 Jul	WestJet	direct
24 Jul - 10 Aug	WestJet	direct

Also check the deals for one-way flights from Calgary to London in July.

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 Calgary to London in July from 744€

Return flights