Cheapest return MDW–KEF flights, October

AirHint found the following cheapest return flights from Chicago (MDW) to Keflavik (KEF) in October 2026 (see full year).

Return flights

04 Oct - 16 Oct KLM
07 Oct - 15 Oct Southwest Airlines
29 Oct - 06 Nov Southwest Airlines
12 Oct - 19 Oct Southwest Airlines
14 Oct - 21 Oct Southwest Airlines
17 Oct - 23 Oct Southwest Airlines
15 Oct - 26 Oct Southwest Airlines
01 Oct - 09 Oct Southwest Airlines
13 Oct - 20 Oct Southwest Airlines
07 Oct - 14 Oct Delta

Also check the deals for one-way flights from Chicago to Keflavik in October.

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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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