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

Return flights

18 Apr - 25 Apr	KLM
20 Apr - 24 Apr	KLM
09 Apr - 30 Apr	KLM
03 Apr - 17 Apr	KLM
08 Apr - 22 Apr	KLM
20 Apr - 10 May	KLM
20 Apr - 30 Apr	KLM
20 Apr - 04 May	KLM
06 Apr - 17 Apr	Finnair
05 Apr - 30 Apr	Finnair
29 Apr - 09 May	Finnair
22 Apr - 02 May	Finnair
13 Apr - 06 May	Finnair
27 Apr - 09 May	KLM
04 Apr - 14 Apr	KLM
05 Apr - 17 Apr	KLM
13 Apr - 06 May	WestJet	direct
20 Apr - 04 May	WestJet	direct
22 Apr - 02 May	WestJet	direct
29 Apr - 09 May	WestJet	direct

Also check the deals for one-way flights from London to Calgary 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 London to Calgary in April from 609€

Return flights