| Abbreviation | Definition |
|---|---|
| BTZ | Bursa, Turkey |
| BUA | Buka Island, Papua New Guinea |
| BUB | Burwell, Nebraska USA |
| BUC | Burketown, Queensland, Australia |
| BUD | Budapest Ferenc Liszt International Airport serving Budapest, Hungary |
| BUD | Budapest, Hungary |
| BUE | Buenos Aires, Buenos Aires, Argentina |
| BUF | Buffalo, New York USA |
| BUG | 17th of November Airport, Benguela (Benguella), Angola |
| BUH | Bucharest, Romania |
| BUI | Bokondini Airport, Indonesia |
| BUI | Bokondini, Indonesia |
| BUJ | Boussaada, Algeria |
| BUK | Alb, Republic of Yemen |
| BUL | Bulolo, Papua New Guinea |
| BUM | Butler, Missouri USA |
| BUO | Burao, Somalia |
| BUP | Bhatinda, India |
| BUQ | Bulawayo, Zimbabwe |
| BUR | Bob Hope Airport (formerly Burbank - Glendale - Pasadena Airport), Burbank, California USA |