Cheapest return flights from Dallas to Keflavik in December from $876

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

Return flights

05 Dec - 12 Dec Southwest Airlines
12 Dec - 19 Dec Southwest Airlines
29 Dec - 03 Jan Southwest Airlines
23 Dec - 02 Jan Southwest Airlines
26 Dec - 02 Jan Southwest Airlines
28 Dec - 03 Jan Southwest Airlines

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

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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