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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.



Boeing 777-9 Begins Certification Flight Testing with FAA Onboard

Boeing 777-9 Begins Certification Flight Testing with FAA Onboard

The 777-9 has commenced certification flight testing at Boeing Field in Seattle. This is a crucial step under the supervision of our regulator to certify the airplane and deliver it to customers worldwide.

Amidst Boeing’s current challenges, the B777X stands out as a project that could revitalize the brand. It is highly anticipated, and Boeing is keen to clear FAA certifications to release it as soon as possible.

Boeing 777-8F vs Airbus A350F: Comparing two Premium aircraft : Click here

The aircraft is two years behind its initial commitment date. During this time, the company has rigorously tested it under various conditions to ensure its readiness for commercial service.


Boeing has announced that the 777X will be used for both passenger and freighter services, depending on customer requirements.

Boeing’s 777X program has achieved a major milestone with the Federal Aviation Administration (FAA) granting approval to begin certification flight tests, marking a significant step towards the aircraft’s entry into commercial service.

Mega Comparison of Boeing 777x vs A350-1000 Aircraft : Click here

The European Union granted approval for this merger in February, and Korean Air anticipates U.S. regulatory approval by the end of October.


Following Airbus’ breakthrough with Korean Air, Reuters reported in April that Korean Air was considering a new Boeing order focused on the 777X, an advanced version of the 777 mini-jumbo.

Boeing 777-9 First certification

The first certification flight test of the 777-9 took place on Friday evening, with FAA personnel onboard alongside Boeing’s pilots and flight test team.

According to The Seattle Times, the aircraft departed from Boeing Field shortly after 6 p.m. and landed nearly two hours later after flying along the Washington and Oregon coast.

The 777X, an upgraded version of the successful 777 twinjet, features new engines and carbon composite wings with folding wingtips to accommodate standard airport gates.


The first variant, the 777-9X, is designed to carry 426 passengers in a two-class configuration for long-haul international flights.

Comparison of two legendary aircraft Boeing 777x vs Boeing 747 aircraft : Click here

Boeing B777x total orders

Boeing has secured 481 orders for the aircraft, with Emirates being the largest customer, having ordered over 200 units. The planemaker has already built and stored 22 777X jets, with an additional six in various stages of assembly in Everett, Washington.

Boeing is close to finalizing a significant deal to sell approximately two dozen 777X jets to Korean Air, with an estimated value ranging from $4 billion to $6 billion, as reported by Reuters.


Industry sources suggest that the agreement could be concluded as early as the Farnborough Airshow in July. Korean Air, South Korea’s largest airline, has been in discussions about returning to Boeing for its long-haul aircraft needs.

The Boeing 777X vs A350 is one of the most popular comparisons among aircraft as of now. The Airbus A350 has been operating for more than eight years, and its promising performance helps airlines in terms of efficiency and customer satisfaction, particularly in noise and vibrations.

The next generation Boeing 777X can fulfill the same requirements, with 777x first delivery given to Emirates Airlines, the launch customer for this aircraft. It remains to be seen how the Boeing 777X vs Airbus A350 will compete against each other in the future.


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