Belgrade Nikola Tesla Airport — Belgrade, Serbia

Serbia's busiest airport, Belgrade Nikola Tesla, carries the code BEG and serves the capital as the country's main international gateway. Elevation reaches 335 feet, with two runways supporting operations as the primary hub for Air Serbia. The airport's name honors Nikola Tesla, the Serbian-American inventor known for his contributions to electrical engineering, a choice that reflects considerable national pride in his legacy. BEG connects Belgrade to major cities across Europe and beyond, standing as the busiest and most significant airport in Serbia by a wide margin over any competitor. Its two-runway layout supports a steadily and consistently growing schedule mixing legacy carriers with low-cost airlines expanding service into the Balkans through Belgrade. Locals still sometimes call it Surčin, after the Belgrade municipality where the airport sits, a name that lingered on for years even after the formal, official switch to honoring Tesla back in 2006, the 150th anniversary of his birth.