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

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

Return flights

25 Sep - 29 Sep Ryanair
25 Sep - 28 Sep Ryanair
26 Sep - 03 Oct Ryanair
25 Sep - 12 Oct Ryanair
22 Sep - 29 Sep Ryanair
18 Sep - 22 Sep Ryanair
22 Sep - 26 Sep Ryanair
11 Sep - 18 Sep Ryanair
12 Sep - 19 Sep Ryanair
11 Sep - 19 Sep Ryanair
19 Sep - 23 Sep Ryanair
18 Sep - 28 Sep Ryanair
25 Sep - 11 Oct 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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