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

Return flights

21 Apr - 05 May	Delta
19 Apr - 02 May	Delta
20 Apr - 10 May	British Airways
20 Apr - 26 Apr	British Airways
03 Apr - 14 Apr	Virgin Atlantic
21 Apr - 05 May	WestJet	direct
01 Apr - 15 Apr	WestJet	direct
07 Apr - 17 Apr	British Airways
20 Apr - 10 May	WestJet	direct
01 Apr - 11 Apr	WestJet	direct
03 Apr - 14 Apr	WestJet	direct
03 Apr - 07 Apr	WestJet	direct
05 Apr - 13 Apr	WestJet	direct
05 Apr - 12 Apr	WestJet	direct
19 Apr - 02 May	WestJet	direct
01 Apr - 10 Apr	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.

Book a cheap hotel in Calgary

Cheap car rent in Calgary

Cheapest return flights from London to Calgary in April from $748

Return flights