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

Return flights

15 Sep - 01 Oct	Wizz Air UK
07 Sep - 20 Sep	WestJet
15 Sep - 29 Sep	Wizz Air UK
01 Sep - 08 Sep	WestJet
01 Sep - 13 Sep	KLM
02 Sep - 16 Sep	WestJet
07 Sep - 14 Sep	KLM
07 Sep - 13 Sep	KLM
01 Sep - 11 Sep	Finnair
04 Sep - 13 Sep	Finnair
15 Sep - 24 Sep	Wizz Air UK
02 Sep - 06 Oct	Aer Lingus
20 Sep - 02 Oct	KLM
28 Sep - 08 Oct	Wizz Air UK
26 Sep - 03 Oct	KLM
29 Sep - 09 Oct	Wizz Air UK
15 Sep - 01 Oct	Air Canada	direct
19 Sep - 03 Oct	TAP
26 Sep - 03 Oct	Air Canada	direct
30 Sep - 10 Oct	KLM

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

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 September from 629€

Return flights