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

Return flights

27 Jul - 28 Aug	WestJet
30 Jul - 06 Aug	Finnair
01 Jul - 25 Jul	Iberia
04 Jul - 25 Jul	Iberia
24 Jul - 10 Aug	Air Canada
22 Jul - 15 Aug	Iberia
08 Jul - 01 Aug	Air Canada
10 Jul - 01 Aug	Air Canada
05 Jul - 11 Jul	Air Canada
01 Jul - 15 Jul	Air Canada
22 Jul - 15 Aug	WestJet	direct
30 Jul - 06 Aug	WestJet	direct
01 Jul - 15 Jul	WestJet	direct
05 Jul - 11 Jul	WestJet	direct
27 Jul - 28 Aug	WestJet	direct
01 Jul - 25 Jul	WestJet	direct
08 Jul - 01 Aug	WestJet	direct
04 Jul - 25 Jul	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 737€

Return flights