AirHint found the following cheapest return flights from Lisbon (LIS) to Keflavik (KEF) in January 2027 (see full year).
Return flights
| 17 Jan - 31 Jan | easyJet | ||
| 16 Jan - 30 Jan | easyJet | ||
| 27 Jan - 03 Feb | TAP | ||
| 28 Jan - 04 Feb | TAP | ||
| 05 Jan - 10 Jan | easyJet | ||
| 17 Jan - 31 Jan | Icelandair | direct | |
| 05 Jan - 10 Jan | Icelandair | direct |
Also check the deals for one-way flights from Lisbon to Keflavik in January.
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