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

Return flights

06 Dec - 09 Dec	Air France
04 Dec - 06 Dec	Wizz Air Malta
05 Dec - 08 Dec	KLM
25 Dec - 01 Jan	KLM
25 Dec - 03 Jan	KLM
20 Dec - 03 Jan	KLM
04 Dec - 05 Dec	Wizz Air Malta
23 Dec - 30 Dec	KLM
26 Dec - 30 Dec	KLM
25 Dec - 01 Jan	Lufthansa	direct
25 Dec - 03 Jan	Lufthansa	direct
28 Dec - 30 Dec	KLM
23 Dec - 30 Dec	Lufthansa	direct
20 Dec - 03 Jan	Lufthansa	direct
04 Dec - 06 Dec	Lufthansa	direct
04 Dec - 05 Dec	Lufthansa	direct

Also check the deals for one-way flights from Billund to Frankfurt 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 Billund to Frankfurt in December from 203€

Return flights