The world’s most connected airports have just been revealed – and five of the top 10 megahubs are in Europe.

According to the latest Megahubs Index by OAG, Istanbul Airport in Türkiye claimed the top spot for 2026, overtaking London Heathrow.

The rankings are based on the number of possible connections between inbound and outbound flights within a six-hour window on the busiest day of the year, Sunday 2 August, and the number of destinations served from the airport.

Istanbul, which is the eighth busiest airport in the world in terms of capacity, has possible connections to 337 global destinations.

London Heathrow dropped down a place, with…

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