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

Return flights

08 Mar - 15 Mar	WestJet
10 Mar - 17 Mar	WestJet
22 Mar - 29 Mar	WestJet
27 Mar - 03 Apr	WestJet
29 Mar - 05 Apr	WestJet
24 Mar - 31 Mar	WestJet
02 Mar - 09 Mar	WestJet
03 Mar - 10 Mar	WestJet
04 Mar - 11 Mar	WestJet
05 Mar - 12 Mar	WestJet
06 Mar - 13 Mar	Porter Airlines (Canada) Ltd
09 Mar - 16 Mar	WestJet
25 Mar - 01 Apr	WestJet
26 Mar - 02 Apr	WestJet
30 Mar - 06 Apr	WestJet
31 Mar - 07 Apr	WestJet
28 Mar - 04 Apr	WestJet

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

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 Montreal to Keflavik in March from $775

Return flights