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

Return flights

01 Dec - 06 Dec	Ryanair
01 Dec - 04 Dec	Ryanair
14 Dec - 17 Dec	Ryanair
07 Dec - 10 Dec	Ryanair
05 Dec - 07 Dec	Wizz Air Malta
20 Dec - 27 Dec	Ryanair
22 Dec - 28 Dec	Ryanair
09 Dec - 14 Dec	Ryanair
28 Dec - 01 Jan	Ryanair
04 Dec - 06 Dec	Ryanair
28 Dec - 04 Jan	Ryanair
28 Dec - 31 Dec	Ryanair
24 Dec - 03 Jan	Ryanair
28 Dec - 03 Jan	Ryanair
30 Dec - 04 Jan	Ryanair
31 Dec - 05 Jan	Ryanair
30 Dec - 03 Jan	Ryanair
29 Dec - 06 Jan	Ryanair
22 Dec - 03 Jan	Ryanair
27 Dec - 03 Jan	Wizz Air Malta

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

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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Cheapest return flights from Treviso to Keflavik in December from $198

Return flights