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

Return flights

15 Dec - 17 Dec	easyJet
01 Dec - 05 Dec	Ryanair
18 Dec - 24 Dec	KLM
12 Dec - 18 Dec	easyJet
21 Dec - 24 Dec	easyJet
14 Dec - 23 Dec	Ryanair
18 Dec - 25 Dec	easyJet
23 Dec - 26 Dec	Ryanair
23 Dec - 03 Jan	easyJet
19 Dec - 23 Dec	Ryanair
23 Dec - 27 Dec	easyJet
26 Dec - 01 Jan	Ryanair
29 Dec - 04 Jan	KLM
30 Dec - 03 Jan	easyJet
29 Dec - 03 Jan	easyJet
28 Dec - 03 Jan	easyJet
29 Dec - 02 Jan	easyJet
26 Dec - 04 Jan	Lufthansa
27 Dec - 02 Jan	easyJet
26 Dec - 02 Jan	Air France

Also check the deals for one-way flights from Toulouse 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 Toulouse to Keflavik in December from 149€

Return flights