Cheapest one-way flights from Keflavik to Lisbon in August from $161

AirHint found the following cheapest one-way flights from Keflavik (KEF) to Lisbon (LIS) in August 2025 (see full year).

One-Way flights

27 Aug easyJet
24 Aug Fly Play
18 Aug Fly Play direct
26 Aug Fly Play
21 Aug Wizz Air
25 Aug Transavia France
29 Aug Transavia France
25 Aug Fly Play direct
14 Aug Scandinavian Airlines
01 Aug Fly Play direct

Also check the deals for return flights from Keflavik to Lisbon in August.

Skyscanner

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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Feel free to contact us with any feedback or request another flight research.