AirHint found the following cheapest return flights from Quebec (YQB) to Keflavik (KEF) in September 2025 (see full year).

Return flights

02 Sep - 23 Sep	Air Canada
02 Sep - 11 Sep	Air Canada
03 Sep - 10 Sep	Air Canada
03 Sep - 12 Sep	Air Canada
03 Sep - 11 Sep	Air Canada
02 Sep - 13 Sep	Air Canada
06 Sep - 21 Sep	Air Canada
02 Sep - 20 Sep	Air Canada
02 Sep - 14 Sep	Air Canada
17 Sep - 23 Sep	Air Canada
10 Sep - 05 Oct	Air Canada
16 Sep - 01 Oct	Air Canada
24 Sep - 22 Oct	Porter Airlines (Canada) Ltd
24 Sep - 19 Oct	Porter Airlines (Canada) Ltd
23 Sep - 09 Oct	Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Quebec to Keflavik 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.

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Cheapest return flights from Quebec to Keflavik in September from 491€

Return flights