AirHint found the following cheapest return flights from Keflavik (KEF) to Lisbon (LIS) in November 2025 (see full year).
Return flights
| 21 Nov - 03 Dec | Wizz Air Malta | ||
| 17 Nov - 23 Nov | Wizz Air Malta | ||
| 09 Nov - 15 Nov | Jet2 |
Also check the deals for one-way flights from Keflavik to Lisbon in November.
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