NEW DELHI, March 2 -- Escalating military tensions in West Asia are beginning to disrupt travel and trade links critical to India's medical value tourism and pharmaceutical exports, as airspace restrictions and shipping detours threaten to slow patient flows and raise logistics costs.

Early signs of disruption are already visible in aviation networks. In a tweet on Saturday, the Directorate General of Civil Aviation said Indian airlines cancelled around 410 flights on 28 February and 440 on 1 March due to security concerns in parts of the Middle East airspace, impacting Gulf and long-haul routes beyond the region, including services to London Heathrow and Canada.

Industry executives say the fallout from strikes involving the US, Israel ...