Cheapest return YUL–KEF flights, May

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

Return flights

30 May - 10 Jun Air Canada
30 May - 06 Jun Air Canada
30 May - 13 Jun Air Canada
27 May - 03 Jun Air Canada
29 May - 05 Jun Air Canada
31 May - 07 Jun Air Canada
27 May - 04 Jun Air Canada
26 May - 02 Jun Air Canada
28 May - 08 Jun Air Canada
16 May - 09 Jun Air Canada
12 May - 19 May Air Canada
13 May - 20 May United
20 May - 27 May Air Canada
13 May - 18 May Porter Airlines (Canada) Ltd
24 May - 31 May United
15 May - 22 May United
23 May - 30 May Air Canada
19 May - 26 May Air Canada
21 May - 28 May Porter Airlines (Canada) Ltd
11 May - 18 May Air Transat

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

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