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

Return flights

08 Dec - 13 Dec	Fly One
08 Dec - 15 Dec	Fly One
17 Dec - 21 Dec	KLM
05 Dec - 08 Dec	Fly One
15 Dec - 19 Dec	KLM
07 Dec - 11 Dec	HiSky Europe
11 Dec - 15 Dec	Lufthansa	direct
12 Dec - 14 Dec	KLM
03 Dec - 10 Dec	Air France
06 Dec - 10 Dec	Ryanair
27 Dec - 05 Jan	KLM
28 Dec - 02 Jan	KLM
27 Dec - 03 Jan	KLM
27 Dec - 03 Jan	Lufthansa	direct
26 Dec - 02 Jan	Lufthansa	direct
29 Dec - 04 Jan	Lufthansa	direct
27 Dec - 05 Jan	Lufthansa	direct
28 Dec - 02 Jan	Lufthansa	direct

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Billund in December from 161€

Return flights