AirHint found the following cheapest return flights from London (LCY) to Budapest (BUD) in December 2025 (see full year).

Return flights

09 Dec - 10 Dec	SWISS
02 Dec - 09 Dec	SWISS
03 Dec - 09 Dec	SWISS
09 Dec - 11 Dec	SWISS
03 Dec - 08 Dec	SWISS
29 Dec - 01 Jan	KLM
09 Dec - 16 Dec	SWISS
11 Dec - 14 Dec	SWISS
09 Dec - 12 Dec	SWISS
10 Dec - 12 Dec	SWISS
30 Dec - 14 Jan	SWISS
01 Dec - 03 Dec	Lufthansa
29 Dec - 06 Jan	KLM
30 Dec - 05 Jan	SWISS
17 Dec - 10 Jan	SWISS
30 Dec - 07 Jan	SWISS
24 Dec - 06 Jan	SWISS
24 Dec - 05 Jan	SWISS
23 Dec - 06 Jan	SWISS
17 Dec - 07 Jan	KLM

Also check the deals for one-way flights from London to Budapest 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 London to Budapest in December from $271

Return flights