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

Return flights

01 Mar - 09 Mar	WestJet	direct
05 Mar - 11 Mar	WestJet	direct
31 Mar - 28 Apr	WestJet
23 Mar - 03 Apr	WestJet	direct
03 Mar - 10 Mar	Delta
01 Mar - 10 Mar	Delta
11 Mar - 18 Mar	KLM
22 Mar - 31 Mar	Air France
23 Mar - 31 Mar	Air France
24 Mar - 31 Mar	Air France
09 Mar - 23 Mar	Air France
18 Mar - 25 Mar	KLM
28 Mar - 12 Apr	WestJet	direct
31 Mar - 08 Apr	KLM
22 Mar - 08 Apr	Air France
16 Mar - 04 Apr	WestJet
26 Mar - 06 Apr	Flair Airlines
31 Mar - 28 Apr	WestJet	direct
25 Mar - 06 Apr	Flair Airlines
09 Mar - 13 Apr	Air France

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

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 March from $493

Return flights