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

Return flights

01 Jul - 31 Aug	WestJet
13 Jul - 25 Aug	WestJet
28 Jul - 19 Aug	WestJet
13 Jul - 21 Jul	WestJet	direct
16 Jul - 30 Jul	WestJet	direct
09 Jul - 14 Jul	WestJet
06 Jul - 15 Jul	WestJet	direct
20 Jul - 29 Jul	Finnair
22 Jul - 05 Aug	Finnair
12 Jul - 21 Jul	WestJet	direct
15 Jul - 13 Aug	WestJet	direct
01 Jul - 03 Aug	Iberia
15 Jul - 03 Aug	Iberia
04 Jul - 14 Jul	Air Canada
16 Jul - 03 Aug	Air Canada
02 Jul - 10 Aug	Air Canada
02 Jul - 06 Jul	Air Canada
08 Jul - 14 Jul	Air Canada
20 Jul - 27 Jul	Air Canada
20 Jul - 03 Aug	Air Canada

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 708€

Return flights