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Top 10 Busiest Global International Airline Routes 2023

Top 10 Busiest Global International Airline Routes in the world 2023

In the ever-evolving landscape of international air travel, certain routes emerge as the gateways for global connectivity, serving as vital arteries connecting diverse regions and cultures. From extensive transcontinental voyages to localized flights, this list provides a glimpse into the most bustling and highly coveted international air routes, capturing the lively rhythm of the interconnected world.

As we navigate the skies of international aviation, OAG’s comprehensive analysis has spotlighted the top-ranking routes that define the pulse of global air travel in 2023.


Leading the pack is the bustling route from Kuala Lumpur (KUL) to Singapore Changi (SIN), boasting a remarkable 4.9 million seats. Cairo (CAI) to Jeddah (JED) secures second place with just a 2% capacity difference, amassing 4.8 million seats.

The third busiest international route, Hong Kong (HKG) to Taipei (TPE), follows closely with 4.6 million seats. Remarkably, this route witnessed a 43% decrease in capacity since its reign as the busiest route in 2019. Claiming the fourth spot is Seoul Incheon (ICN) to Osaka Kansai (KIX) with 4.2 million seats.


Examining the landscape further, most routes in the top 10 exhibit capacities ranging from 9% to 43% below their 2019 levels. However, defying the norm is the London Heathrow (LHR) to New York (JFK) route, boasting a 1% increase with 3.5 million seats, showcasing the resilience and growth potential of this crucial international airway.