Thumrait Air Base — Thumrait, Oman

Thumrait, coded TTH, is an air base in the Dhofar region of southern Oman operated by the Royal Air Force of Oman. The facility has functioned primarily as military infrastructure rather than a commercial airport, supporting Omani air defense operations in the country's south. Over past decades, Thumrait has also hosted foreign military aircraft during various coalition and logistics operations in the wider Gulf and Indian Ocean region, reflecting its strategic location along key regional flight corridors. The base includes substantial runway capacity built to military specifications, exceeding what civilian traffic in the sparsely populated Dhofar interior would otherwise require. TTH illustrates how airport codes can represent defense installations as much as public passenger terminals, particularly in countries with significant military aviation infrastructure.