AirHint found the following cheapest one-way flights from Keflavik (KEF) to Athens (ATH) in December 2025 (see full year).
One-Way flights
| 31 Dec | KLM | ||
| 11 Dec | easyJet | ||
| 08 Dec | Wizz Air Malta | ||
| 10 Dec | Wizz Air | ||
| 12 Dec | Wizz Air Malta | ||
| 15 Dec | Wizz Air Malta | ||
| 28 Dec | KLM | ||
| 25 Dec | KLM | ||
| 17 Dec | Wizz Air | ||
| 22 Dec | easyJet |
Also check the deals for return flights from Keflavik to Athens 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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