| 1 | YH | West Caribbean Airways, S.A. | ICAO: WCW, Designator YH reinstated by IATA | CO | AVCODES |
| 2 | YH | Air Jet | ICAO: AIJ, Callsign: Air Jet, Designator YH recalled by IATA | F | AVCODES |
| 3 | YH | Thai Global Airline Company Limited | ICAO: THM, Callsign: Thai Global, Ceased operations | T | AVCODES |
| 4 | YH | Yangon Airways Limited | ICAO: AYG, Callsign: Air Yangon, Name changed to Air Thanlwin Holding Company Ltd in February 2014. IATA designator changed from HK* w.e.f. 15 June 2009. | MYA | AVCODES |
| 5 | YH | Sunsplash Aviation, LLC. | IATA Prefix: 361, | USA | AVCODES |
| 6 | YH | Air Thanlwin Holding Company Limited | ICAO: AYG, Callsign: Royal Bird, Name changed from Yangon Airways Limited in February 2014. IATA Designator changed to ST. IATA designator changed from HK* w.e.f. 15 June 2009. | MYA | AVCODES |
| 7 | YHKR | Y H K TRANSPORTATION INC | | | SCAC4 |
| 8 | YHRU | YHR GLOBAL TRANS PTE LTD | | SGP | BIC |
| 9 | YHXU | YI HANG CONTAINER SERVICES LIMITED | | PRC | BIC |
