Cheapest return flights from Chicago to Keflavik in March from 680€

Best time to book flights for Chicago (MDW) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Chicago (MDW) to Keflavik (KEF) in March 2025 (see full year).

Return flights

24 Mar - 25 Mar Frontier Airlines
01 Mar - 07 Mar Frontier Airlines
25 Mar - 01 Apr Porter Airlines (Canada) Ltd
20 Mar - 31 Mar Frontier Airlines
24 Mar - 31 Mar Frontier Airlines
17 Mar - 24 Mar Frontier 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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik