AirHint found the following cheapest return flights from Calgary (YYC) to London (LHR) in September 2026 (see full year).
Return flights
| 15 Sep - 03 Oct | Air Canada | ||
| 02 Sep - 16 Sep | Lufthansa | direct | |
| 08 Sep - 17 Sep | Air Canada | ||
| 03 Sep - 10 Sep | Air Canada | ||
| 01 Sep - 22 Sep | Air Canada | direct |
Also check the deals for one-way flights from Calgary to London in September.
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