Cheapest return flights from Chicago to Keflavik in March from 736€

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

Return flights

25 Mar - 01 Apr Southwest Airlines
06 Mar - 13 Mar Southwest Airlines
03 Mar - 10 Mar Southwest Airlines
02 Mar - 09 Mar Southwest Airlines
30 Mar - 06 Apr Southwest Airlines
13 Mar - 20 Mar Southwest Airlines
07 Mar - 14 Mar Southwest Airlines
10 Mar - 17 Mar Southwest Airlines
17 Mar - 24 Mar Southwest Airlines
22 Mar - 29 Mar Porter Airlines (Canada) Ltd
05 Mar - 12 Mar Porter Airlines (Canada) Ltd
24 Mar - 31 Mar Southwest Airlines
31 Mar - 07 Apr Porter Airlines (Canada) Ltd
27 Mar - 03 Apr Porter Airlines (Canada) Ltd
29 Mar - 05 Apr Porter Airlines (Canada) Ltd
26 Mar - 02 Apr Porter Airlines (Canada) Ltd
28 Mar - 04 Apr Southwest Airlines

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

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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