AirHint found the following cheapest return flights from London (LHR) to Santorini (Thira) (JTR) in December 2025 (see full year).

Return flights

01 Dec - 05 Dec	Aegean Airlines
08 Dec - 11 Dec	Aegean Airlines
05 Dec - 08 Dec	Aegean Airlines
05 Dec - 12 Dec	Aegean Airlines
05 Dec - 07 Dec	Aegean Airlines
08 Dec - 12 Dec	Aegean Airlines
11 Dec - 24 Dec	Aegean Airlines
12 Dec - 16 Dec	Lufthansa
16 Dec - 20 Dec	Lufthansa
23 Dec - 26 Dec	Aegean Airlines
26 Dec - 01 Jan	Aegean Airlines
19 Dec - 05 Jan	Scandinavian Airlines
19 Dec - 02 Jan	Scandinavian Airlines
24 Dec - 04 Jan	Scandinavian Airlines
19 Dec - 04 Jan	Scandinavian Airlines
28 Dec - 02 Jan	Scandinavian Airlines
30 Dec - 03 Jan	SWISS
28 Dec - 03 Jan	SWISS

Also check the deals for one-way flights from London to Santorini (Thira) 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.

Book a cheap hotel in Santorini (Thira)

Cheap car rent in Santorini (Thira)

Cheapest return flights from London to Santorini (Thira) in December from $291

Return flights