AirHint found the following cheapest return flights from Billund (BLL) to Frankfurt (FRA) in May 2026 (see full year).
Return flights
| 03 May - 10 May | Norwegian Air Sweden AOC | ||
| 16 May - 31 May | KLM | ||
| 13 May - 25 May | Norwegian Air Sweden AOC | ||
| 16 May - 31 May | Lufthansa | direct | |
| 07 May - 08 May | Wizz Air | ||
| 13 May - 25 May | Lufthansa | direct |
Also check the deals for one-way flights from Billund to Frankfurt in May.
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