AirHint found the following cheapest return flights from Billund (BLL) to Lisbon (LIS) in September 2026 (see full year).
Return flights
| 08 Sep - 16 Sep | Lufthansa | ||
| 09 Sep - 19 Sep | KLM | ||
| 07 Sep - 02 Oct | Lufthansa | ||
| 03 Sep - 15 Sep | Lufthansa | ||
| 24 Sep - 01 Oct | KLM | ||
| 06 Sep - 27 Sep | Norwegian Air Sweden AOC |
Also check the deals for one-way flights from Billund to Lisbon in September.
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