AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to Keflavik (KEF) in September 2025 (see full year).
Return flights
| 28 Sep - 05 Oct | Spirit Airlines | ||
| 20 Sep - 01 Oct | Frontier Airlines | ||
| 23 Sep - 30 Sep | Frontier Airlines | ||
| 19 Sep - 26 Sep | Frontier Airlines | ||
| 21 Sep - 28 Sep | Spirit Airlines | ||
| 19 Sep - 29 Sep | Frontier Airlines |
Also check the deals for one-way flights from Dallas-Fort Worth to Keflavik in September.
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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