Top 10 most connected airports in the world 2025: Delhi’s IGI slips in global ranking

A new report by aviation analytics firm OAG has ranked the most connected airports in the world for 2025, based on the highest ratio of scheduled international connections to the number of destinations served.

For the third consecutive year, London Heathrow (LHR) tops the list, offering more than 59,000 potential connections to 226 destinations on its busiest day.

At No. 2, Istanbul Airport (IST) made a dramatic leap from 8th last year, powered by a 25 per cent year-on-year rise in potential connections.

Frankfurt (FRA) also surged ahead, climbing from 10th to 4th with a 21 per cent increase.

In Asia, Kuala Lumpur International Airport (KUL) is the highest-ranked, tying with Frankfurt at No. 4, while Tokyo Haneda (HND) dropped from 3rd in 2024 to 9th this year, following a 10 per cent dip in connections.

The United States also made gains. Atlanta Hartsfield-Jackson (ATL) re-entered the top 10 at No. 8 after boosting connections by 14 per cent and adding eight new destinations.

Meanwhile, New York’s JFK Airport, a major US international hub, connects to 208 destinations worldwide, ranking 14th globally–slipping from 6th rank in 2024.

Global Airport Megahubs 2025: Top 10 most connected airports in the world

Rank 2025	Airport Name	Country	Share of Flights	Destinations	Rank 2024
1	London Heathrow Apt (LHR)	United Kingdom	51%	226	1
2	Istanbul Airport (IST)	Turkiye	79%	327	8
3	Amsterdam Airport Schiphol (AMS)	Netherlands	55%	275	4
4	Kuala Lumpur International Airport (KUL)	Malaysia	36%	151	2
4	Frankfurt International Apt (FRA)	Germany	56%	307	10
6	Seoul Incheon International Airport (ICN)	Korea Republic of	22%	179	5
7	Chicago O’Hare International Apt (ORD)	USA	49%	297	9
8	Atlanta Hartsfield-Jackson Intl Apt (ATL)	USA	79%	251	11
9	Tokyo Intl (Haneda) (HND)	Japan	36%	107	3
10	Paris Charles de Gaulle Apt (CDG)	France	56%	299	7

Source: OAG Megahubs 2025

Where does New Delhi’s Indira Gandhi International Airport (DEL) rank in 2025?

New Delhi’s Indira Gandhi International Airport (IGIA) has ranked as the 9th busiest airport globally.

India’s busiest hub, Delhi’s Indira Gandhi International Airport (DEL), has slipped to 39th place globally, down from 24th in 2024 — a drop of 15 spots.

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