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

Return flights

19 Apr - 09 May	WestJet
20 Apr - 10 May	WestJet
13 Apr - 27 Apr	WestJet	direct
20 Apr - 27 Apr	WestJet	direct
16 Apr - 30 Apr	WestJet	direct
20 Apr - 04 May	Lufthansa
07 Apr - 22 Apr	Air Canada
24 Apr - 21 May	Air Canada
21 Apr - 16 May	Lufthansa
28 Apr - 14 May	Lufthansa
16 Apr - 09 May	Lufthansa
18 Apr - 09 May	Lufthansa
26 Apr - 16 May	Lufthansa
30 Apr - 10 May	Air Canada
02 Apr - 16 Apr	Air Canada
02 Apr - 11 Apr	Air Canada
11 Apr - 18 Apr	Air Canada
09 Apr - 19 Apr	Lufthansa
06 Apr - 13 Apr	Air Canada
05 Apr - 11 Apr	Lufthansa

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

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 April from 483€

Return flights