Karlsruhe Baden-Baden Airport — Rheinmünster, Germany

Karlsruhe Baden-Baden Airport, coded FKB, occupies a site in Rheinmünster that once functioned as a French and later German military airfield known as Söllingen. Civil operations grew steadily after the base transitioned to commercial use, and today FKB functions primarily as a low-cost carrier gateway, with Ryanair operating it as a regional base. The airport sits roughly midway between Karlsruhe and the spa town of Baden-Baden, drawing leisure travelers heading toward the Black Forest and business visitors connecting to the Karlsruhe technology corridor. Its location near the French border also makes it a practical option for residents of northern Alsace. Passenger numbers remain modest compared with Germany's major hubs, yet the single-runway facility has carved out a niche serving budget routes across southern Europe. A retail park and logistics facilities have developed around the airfield since privatization.