Cheapest return flights from Chicago to Keflavik in March from $414

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

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