Cheapest return flights from Chicago to Keflavik in March from 368€

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

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

Return flights

03 Mar - 11 Mar Frontier Airlines
04 Mar - 11 Mar Frontier Airlines
05 Mar - 12 Mar Spirit Airlines
05 Mar - 19 Mar Spirit Airlines
05 Mar - 13 Mar Spirit Airlines
10 Mar - 19 Mar Frontier Airlines
01 Mar - 03 Mar Frontier Airlines
10 Mar - 18 Mar Frontier Airlines
31 Mar - 07 Apr Spirit Airlines
25 Mar - 02 Apr Spirit Airlines
10 Mar - 17 Mar Frontier Airlines
29 Mar - 06 Apr jetBlue
18 Mar - 02 Apr Spirit Airlines
24 Mar - 01 Apr Spirit Airlines
30 Mar - 07 Apr jetBlue
17 Mar - 02 Apr Spirit Airlines
06 Mar - 10 Mar Spirit Airlines
30 Mar - 07 Apr Icelandair direct
25 Mar - 02 Apr Icelandair direct
18 Mar - 02 Apr Icelandair direct

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