Multiple outlets report that airlines cancel about 13,000 flights scheduled for May, affecting travel plans during peak holiday periods. The cancellations cut roughly two million airline seats worldwide from May timetables, with more than 100 flights reported departing or operating from London Heathrow. The disruptions are linked to higher jet fuel costs attributed to the US-Iran war and broader instability in the Middle East. One cited factor is the closure of the Strait of Hormuz trade route, alongside ongoing tensions in the region, which are said to have driven up fuel prices and increased operating pressures for carriers. Together, the reports describe widespread schedule reductions impacting customers across different destinations, with particular emphasis on potential disruption during May half-term travel for travellers in the UK. While the exact impact on individual routes and dates varies by airline, the overall picture across sources is that fuel-price increases and related operational constraints lead to major fleet and schedule adjustments in May, including significant cancellations at Heathrow.