AirHint found the following cheapest return flights from Lisbon (LIS) to Keflavik (KEF) in July 2026 (see full year).
Return flights
| 23 Jul - 30 Jul | Vueling Airlines | ||
| 03 Jul - 11 Jul | Transavia France | ||
| 26 Jul - 02 Aug | Icelandair | direct | |
| 20 Jul - 27 Jul | easyJet |
Also check the deals for one-way flights from Lisbon to Keflavik in July.
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