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

Return flights

10 Dec - 13 Dec	British Airways	direct
12 Dec - 16 Dec	British Airways	direct
02 Dec - 04 Dec	British Airways	direct
14 Dec - 17 Dec	British Airways	direct
22 Dec - 09 Jan	KLM
29 Dec - 04 Jan	KLM
29 Dec - 01 Jan	KLM
20 Dec - 30 Dec	KLM
21 Dec - 28 Dec	KLM
29 Dec - 03 Jan	KLM
23 Dec - 30 Dec	KLM
28 Dec - 02 Jan	KLM
16 Dec - 19 Dec	KLM
22 Dec - 22 Dec	KLM
16 Dec - 19 Dec	British Airways	direct
28 Dec - 02 Jan	British Airways	direct
22 Dec - 09 Jan	British Airways	direct
29 Dec - 01 Jan	British Airways	direct

Also check the deals for one-way flights from London to Billund 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 Billund in December from 95€

Return flights