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

Return flights

29 Jan - 05 Feb	British Airways
08 Jan - 15 Jan	British Airways
03 Jan - 13 Jan	WestJet
05 Jan - 12 Jan	WestJet
07 Jan - 14 Jan	WestJet
09 Jan - 16 Jan	WestJet
10 Jan - 17 Jan	WestJet
11 Jan - 18 Jan	WestJet
12 Jan - 19 Jan	WestJet
15 Jan - 22 Jan	WestJet
16 Jan - 23 Jan	WestJet
25 Jan - 01 Feb	WestJet
26 Jan - 02 Feb	WestJet
27 Jan - 03 Feb	WestJet
28 Jan - 04 Feb	WestJet
31 Jan - 07 Feb	WestJet
30 Jan - 06 Feb	British Airways
26 Jan - 09 Feb	Porter Airlines (Canada) Ltd

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

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 January from 667€

Return flights