Boca Raton Airport — Boca Raton, United States

Florida's Boca Raton Airport, coded BCT, isn't built for commercial passengers at all, despite sitting inside a well-known South Florida city in the United States, just 13 feet above sea level. A single runway serves the field, which operates as a general aviation reliever airport rather than a terminal with scheduled airline check-in counters or baggage claim. BCT mainly handles private aircraft, flight training, and corporate jets, easing pressure on the larger commercial airports elsewhere in South Florida. Its location within Boca Raton makes it a convenient option for local business aviation, even though it never turns up in a typical airline booking search the way nearby commercial fields do.