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

Return flights

26 Mar - 02 Apr	Lufthansa
05 Mar - 12 Mar	British Airways
19 Mar - 26 Mar	British Airways
31 Mar - 07 Apr	Lufthansa
30 Mar - 06 Apr	Austrian Airlines
04 Mar - 11 Mar	WestJet
06 Mar - 13 Mar	WestJet
08 Mar - 15 Mar	WestJet
10 Mar - 17 Mar	WestJet
18 Mar - 25 Mar	WestJet
22 Mar - 29 Mar	WestJet
24 Mar - 31 Mar	WestJet
03 Mar - 10 Mar	WestJet
25 Mar - 01 Apr	WestJet
27 Mar - 03 Apr	WestJet
29 Mar - 05 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 665€

Return flights