The 10th annual edition of OAG Megahubs 2025 has been launched with Kuala Lumpur leading the way for the Asia-Pacific region.

This special anniversary edition continues to deliver the key statistics on the most connected airports in the world, and includes a comparison to a decade earlier, highlighting both the growth of the aviation industry and the competitive options available to travelers from expanding Megahubs.

OAG Megahubs 2025 reveals the most internationally connected airports in the world and the most domestically connected airports in the U.S. including:

• Top 50 Most Connected Airports
• Top 25 Most Connected Low-Cost Carrier (LCC) Airports
• Top 25 Most Connected US Domestic Airports
• Top 10 Most Connected Airports by region: EMEA, North America, Latin America, Asia Pacific, Europe, the Middle East, and Africa.

OAG Megahubs 2025 ranks the connectivity of the world’s leading international airport hubs – globally and regionally – as well as gateways into domestic markets and provides a platform for comparison. These unique rankings are generated by comparing the number of scheduled connections to and from international flights with the number of destinations served from the airport.

Now in its 10th year, these unique rankings are generated by comparing the number of scheduled connections to and from international flights with the number of destinations served from the airport. Using the most comprehensive and accurate network of airline schedules and global flight connections in the world, OAG Megahubs 2025 provides essential insights on how flight connectivity changes, develops, and grows across the world’s largest airports.

Megahubs 2025 includes a comparison to a decade earlier, highlighting both the growth of the aviation industry and the competitive options available to travelers from expanding Megahubs.

Kuala Lumpur (KUL) is the highest-ranking Asian airport in the Top 10 in joint 4th place with Frankfurt (FRA).

London Heathrow (LHR) retains its title as the world’s most connected airport for the third consecutive year, offering over 59,000 possible connections to 226 destinations on the busiest day. Heathrow remains the leading hub for global travelers and is also Europe’s busiest airport by seat capacity. Notably, Heathrow is the only airport in the Global Top 10 to retain the same ranking as last year. Every other airport in the Top 10 has seen shifts in position – some positive and some negative.

Key movements within the Top 10 include:

• Istanbul Airport (IST) has seen one of the greatest increases, surging from 8th position last year to 2nd place in this year’s ranking, due to a 25% year-on-year increase in potential connections on the busiest day of the year.
• Amsterdam Schiphol (AMS) climbs to 3rd place, up from 4th place last year.
• Kuala Lumpur (KUL) is the highest-ranking Asian airport in the Top 10 in joint 4th place with Frankfurt (FRA).
• Frankfurt (FRA) has seen a significant shift in rankings, climbing from 10th position last year to 4th, driven by a 21% increase in potential connections year-on-year.
• Tokyo Haneda (HND) has dropped down in this year’s rankings from 3rd in 2024 to 9th in 2025, reflecting a 10% decline in connections.
• Atlanta Hartsfield-Jackson (ATL) – the world’s largest airport by seat capacity – re-enters the Top 10 this year, rising from 11th place last year to 8th position in 2025. ATL has added eight more destinations and seen a corresponding 14% increase in potential connections.
• Chicago O’Hare (ORD) also makes gains, climbing two spots to 7th, due to a 17% growth in connections and an expanded network of 15 additional destinations.

Low-Cost Megahubs highlight the growing strength of LCCs in shaping global connectivity

• Kuala Lumpur (KUL) remains the world’s most connected LCC Megahub, holding onto the top spot.
• Incheon (ICN) has risen from 3rd to 2nd place, swapping positions with Manila (MNL), which now ranks 3rd.
• Hong Kong (HKG) has experienced the most impressive growth, moving up 20 places to 4th place this year. Potential LCC connections at HKG have almost tripled, driven by HK Express, which added 15 new destinations in the past year. Almost half of these operate to Japan, with others linking to China, Vietnam, and Malaysia.
• Dubai (DXB) in 5th place has the highest volume of potential LCC connections, with FlyDubai operating 28% of flights at Dubai.
• Sydney (SYD) has also seen one of the largest jumps, moving up from 20th place in 2024 to 6th place this year.
• Tokyo Narita (NRT) has also almost doubled its potential connections compared to last year, moving up from 19th to 7th place.

Looking at the broader picture, 16 of the Top 25 LCC Megahubs are in Asia Pacific, eight are in EMEA, and just one, New York JFK, is in North America, emphasizing Asia Pacific’s role as the dominant region for low-cost connectivity.