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

Return flights

12 Mar - 19 Mar	British Airways
26 Mar - 02 Apr	Lufthansa
14 Mar - 21 Mar	British Airways
09 Mar - 16 Mar	WestJet
02 Mar - 09 Mar	WestJet
10 Mar - 17 Mar	WestJet
25 Mar - 01 Apr	WestJet
24 Mar - 31 Mar	WestJet
31 Mar - 07 Apr	Lufthansa
18 Mar - 25 Mar	Finnair
16 Mar - 23 Mar	Finnair
03 Mar - 10 Mar	Porter Airlines (Canada) Ltd
17 Mar - 24 Mar	Porter Airlines (Canada) Ltd
30 Mar - 06 Apr	Austrian Airlines
29 Mar - 05 Apr	Lufthansa
28 Mar - 04 Apr	Lufthansa

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 671€

Return flights