Cheapest return flights from Montreal to Keflavik in May from $671

AirHint found the following cheapest return flights from Montreal (YUL) to Keflavik (KEF) in May 2026 (see full year).

Return flights

31 May - 07 Jun Air Canada
27 May - 03 Jun Air Canada
12 May - 19 May Air Canada
24 May - 31 May Air Canada
20 May - 27 May Air Canada
17 May - 28 May Air Canada
04 May - 11 May Porter Airlines (Canada) Ltd
23 May - 30 May Porter Airlines (Canada) Ltd
26 May - 02 Jun Porter Airlines (Canada) Ltd
29 May - 05 Jun Porter Airlines (Canada) Ltd
30 May - 06 Jun Air Canada
25 May - 01 Jun Porter Airlines (Canada) Ltd
02 May - 09 May Porter Airlines (Canada) Ltd
01 May - 08 May Porter Airlines (Canada) Ltd
08 May - 15 May Porter Airlines (Canada) Ltd
16 May - 23 May Porter Airlines (Canada) Ltd
28 May - 04 Jun WestJet

Also check the deals for one-way flights from Montreal to Keflavik in May.

Powered by

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 Keflavik

Cheap car rent in Keflavik

Feel free to contact us with any feedback or request another flight research.