Cheapest return flights from Houston to Keflavik in December from 453€

AirHint found the following cheapest return flights from Houston (HOU) to Keflavik (KEF) in December 2025 (see full year).

Return flights

07 Dec - 14 Dec Spirit Airlines
04 Dec - 11 Dec Spirit Airlines
11 Dec - 18 Dec Frontier Airlines
06 Dec - 16 Dec Frontier Airlines
14 Dec - 21 Dec Spirit Airlines
13 Dec - 20 Dec Spirit Airlines
15 Dec - 22 Dec Spirit Airlines
10 Dec - 17 Dec jetBlue
16 Dec - 23 Dec Spirit Airlines
12 Dec - 19 Dec Spirit Airlines
30 Dec - 06 Jan Spirit Airlines
29 Dec - 05 Jan Spirit Airlines
25 Dec - 01 Jan Spirit Airlines
28 Dec - 04 Jan Frontier Airlines
27 Dec - 03 Jan Spirit Airlines
16 Dec - 02 Jan Spirit Airlines
28 Dec - 03 Jan Spirit Airlines
14 Dec - 03 Jan Spirit Airlines

Also check the deals for one-way flights from Houston to Keflavik in December.

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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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