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

Return flights

01 Sep - 08 Sep	Virgin Atlantic
09 Sep - 30 Sep	Virgin Atlantic
02 Sep - 16 Sep	Delta
01 Sep - 23 Sep	Virgin Atlantic
01 Sep - 09 Sep	Delta
01 Sep - 10 Sep	Virgin Atlantic
28 Sep - 12 Oct	KLM
01 Sep - 15 Sep	Delta
02 Sep - 15 Sep	Delta
18 Sep - 02 Oct	Delta
16 Sep - 23 Sep	Virgin Atlantic
28 Sep - 15 Oct	KLM
28 Sep - 05 Oct	KLM
08 Sep - 15 Sep	Delta
19 Sep - 03 Oct	KLM
19 Sep - 02 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.

Book a cheap hotel in Calgary

Cheap car rent in Calgary

Cheapest return flights from London to Calgary in September from $855

Return flights