Cheapest return flights from Warsaw to Keflavik in September from 250€

Best time to book flights for Warsaw (WMI) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Warsaw (WMI) to Keflavik (KEF) in September 2025 (see full year).

Return flights

07 Sep - 17 Sep Ryanair
21 Sep - 01 Oct Ryanair
25 Sep - 30 Sep Ryanair
08 Sep - 12 Sep Ryanair
25 Sep - 05 Oct Ryanair
14 Sep - 21 Sep Ryanair
27 Sep - 01 Oct Ryanair
10 Sep - 17 Sep Ryanair
19 Sep - 26 Sep Ryanair
17 Sep - 24 Sep Ryanair
17 Sep - 01 Oct Ryanair
11 Sep - 18 Sep Ryanair
15 Sep - 22 Sep Ryanair
21 Sep - 30 Sep Ryanair

Also check the deals for one-way flights from Warsaw to Keflavik in September.

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.

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