AirHint found the following cheapest return flights from Billund (BLL) to Lisbon (LIS) in May 2026 (see full year).
Return flights
| 19 May - 10 Jun | Lufthansa | ||
| 10 May - 31 May | KLM | ||
| 31 May - 23 Jun | KLM | ||
| 09 May - 12 May | Lufthansa | ||
| 07 May - 14 May | KLM | ||
| 29 May - 02 Jun | Lufthansa | ||
| 16 May - 07 Jun | KLM |
Also check the deals for one-way flights from Billund to Lisbon in May.
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