Cheapest return DAL–KEF flights, September

AirHint found the following cheapest return flights from Dallas (DAL) to Keflavik (KEF) in September 2026 (see full year).

Return flights

08 Sep - 15 Sep Delta
24 Sep - 01 Oct Delta
07 Sep - 14 Sep Delta
14 Sep - 21 Sep Delta
21 Sep - 28 Sep Delta
22 Sep - 06 Oct KLM
25 Sep - 02 Oct KLM
17 Sep - 24 Sep Virgin Atlantic
20 Sep - 27 Sep Delta

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

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