Mulhouse Bale airport (officially known as Euro-Airport Basel-Mulhouse-Freiburg) is located next to Saint Louis, near the borders of France, Germany and Switzerland, and perfectly located to explore all three with our cheap car hire deals. The international airport is entirely on French soil, but operated jointly by France and Switzerland, and connects directly to Switzerland via a border road. The airport therefore has three airport letter codes, BSL (Swiss), MLH (French) and EAP (International). Sixt car hire can be found on the French side of the airport in the arrivals hall.