AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to Keflavik (KEF) in September 2025 (see full year).
Return flights
| 15 Sep - 01 Oct | Spirit Airlines | ||
| 16 Sep - 23 Sep | Spirit Airlines | ||
| 21 Sep - 27 Sep | Frontier Airlines | ||
| 23 Sep - 28 Sep | Spirit Airlines | ||
| 01 Sep - 30 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.
Find us on social media