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

Return flights

22 Apr - 25 Apr	WestJet
13 Apr - 27 Apr	WestJet
13 Apr - 22 Apr	WestJet	direct
16 Apr - 21 Apr	WestJet	direct
22 Apr - 13 May	Delta
06 Apr - 13 Apr	WestJet	direct
06 Apr - 16 Apr	Air France
22 Apr - 07 May	Delta
23 Apr - 05 May	Air France
25 Apr - 02 May	Air France
22 Apr - 05 May	Delta
06 Apr - 16 Apr	WestJet	direct
09 Apr - 19 Apr	KLM
01 Apr - 15 Apr	Delta
22 Apr - 25 Apr	WestJet	direct
29 Apr - 21 May	Virgin Atlantic
30 Apr - 19 May	Delta
22 Apr - 13 May	WestJet	direct
29 Apr - 21 May	WestJet	direct
25 Apr - 02 May	WestJet	direct

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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Calgary to London in April from $567

Return flights