AirHint found the following cheapest return flights from Lille (LIL) to Basel (BSL) in January 2026 (see full year).
Return flights
| 30 Jan - 01 Feb | easyJet | ||
| 22 Jan - 29 Jan | TUI fly Belgium | ||
| 31 Jan - 02 Feb | Volotea | ||
| 21 Jan - 28 Jan | Air Algerie |
Also check the deals for one-way flights from Lille to Basel in January.
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