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World’s Top 10 Airport Megahubs of 2023

London Heathrow Airport (LHR) is the world’s most internationally connected airport in 2023. The OAG Megahubs Index 2023 reveals the most internationally connected airports in the world and by region.

The rankings were generated by comparing the number of scheduled connections to and from international flights with the number of destinations served from the airport on the busiest day between September 2022 and August 2023.

OAG analyzed flight data for the 100 largest airports in the world based on total scheduled seats and calculated the total number of all possible connections between inbound and outbound flights within a six-hour window (where either the inbound, outbound, or both flights are international).

Top 10 International Airport Megahubs

London Heathrow Airport (LHR) has clinched the top spot as the world’s most internationally connected airport. In addition, LHR ranked as the fourth largest airport globally in terms of total scheduled capacity for the period through August 2023.

While the total number of potential connections during this selected timeframe has yet to fully rebound to 2019 levels, London Heathrow Airport maintains its supremacy this year, boasting the highest ratio of connections to destinations served.

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Notably, the presence of multiple Asian airport hubs is a significant development, especially considering the ongoing recovery process in the region. Kuala Lumpur (KUL) emerges as the most connected among these hubs, securing fourth place. Tokyo’s Haneda Airport (HND) closely follows in fifth position.

RankAirportCountryDestinations*Dominant CarrierShare of Flights
1London Heathrow (LHR)United Kingdom224British Airways50%
2New York-JFK (JFK)USA189Delta Airlines34%
3Amsterdam Airport Schiphol (AMS)Netherlands262KLM53%
4Kuala Lumpur (KUL)Malaysia116AirAsia34%
5Tokyo-Haneda (HND)Japan105All Nippon Airways36%
6Frankfurt Airport (FRA)Germany290Lufthansa61%
7Istanbul Airport (IST)Turkey303Turkish Airlines79%
8Seoul Incheon (ICN)South Korea148Korean Air22%
9Paris-CDGFrance267Air France55%
10Chicago O’Hare (ORD)USA242United Airlines48%
*Destinations include both domestic and international.

Joining London Heathrow in the esteemed league of the Top 10 Global Megahubs are major European airport hubs such as Amsterdam (AMS), Frankfurt (FRA), Paris (CDG), and Istanbul (IST).

North America

New York – JFK ranked as the most internationally connected North American Airport followed by Chicago O’Hare (ORD) and Toronto Pearson International Airport (YYZ). Atlanta (ATL) and Newark (EWR) completed the Top 5 North American airports.

RankAirportCountryDominant CarrierShare of Flights
1JFKUSADelta Air Lines34%
2ORDUSAUnited Airlines48%
3YYZCanadaAir Canada54%
4ATLUSADelta Air Lines75%
5EWRUSAUnited Airlines70%
6LAXUSADelta Air Lines20%
7DFWUSAAmerican Airlines84%
8MIAUSAAmerican Airlines65%
9IAHUSAUnited Airlines77%
10SEAUSAAlaska Airlines54%


In Europe, London Heathrow Airport (LHR) remains in the #1 position. Amsterdam (AMS) ranked second moving up from 4th place in 2019. Notably, Istanbul (IST) has also surged into the Top 10, securing an impressive fourth place.

RankAirportCountryDominant CarrierShare of Flights
1LHRUnited KingdomBritish Airways50%
2AMSNetherlandsKLM-Royal Dutch Airlines53%
3FRAGermanyDeutsche Lufthansa AG61%
4ISTTurkeyTurkish Airlines79%
5CDGFranceAir France55%
6MUCGermanyDeutsche Lufthansa AG60%
8SAWTurkeyPegasus Airlines60%
9ATHGreeceAegean Airlines34%
10BCNSpainVueling Airlines43%

Asia-Pacific Region

Asia Pacific, while having the second-highest average Connectivity Index for the Top 10 Megahubs, has seen significant change over the year.

Five of the region’s Top 10 most connected Megahubs are in South East Asia with, as yet, no Chinese airports returning to the Megahubs regional ranking. Meanwhile, the Top 10 also accommodates two Japanese airports, Tokyo Haneda (HND) and Fukuoka (FUK).

RankAirportCountryDominant CarrierShare of Flights
2HNDJapanAll Nippon Airways36%
3ICNKorea Republic ofKorean Air22%
4BKKThailandThai Airways International14%
5SINSingaporeSingapore Airlines31%
6MNLPhilippinesPhilippine Airlines32%
7CGKIndonesiaBatik Air21%
8SYDAustraliaQantas Airways40%
10FUKJapanJapan Airlines19%

Middle East & Africa

In the Middle East and Africa, Dubai International Airport (DXB) retained its 1st position, with Qatar’s Hamad International Airport (DOH) and South Africa’s Johannesburg (JNB) completing the top three.

RankAirportCountryDominant CarrierShare of Flights
1DXBUnited Arab EmiratesEmirates39%
2DOHQatarQatar Airways80%
3JNBSouth AfricaAirlink37%
4RUHSaudi ArabiaSaudi Arabian Airlines41%
6ADDEthiopiaEthiopian Airlines96%
7JEDSaudi ArabiaSaudi Arabian Airlines41%
8KWIKuwaitJazeera Airways31%
9AUHUnited Arab EmiratesEtihad Airways53%
10BAHBahrainGulf Air63%

Latin America

Mexico City Airport (MEX) remains the top-ranked airport in Latin America followed by Colombia’s Bogota Airport and Brazil’s São Paulo Guarulhos International Airport.

RankAirportCountryDominant CarrierShare of Flights
3GRUBrazilLATAM Airlines Group49%
4PTYPanamaCopa Airlines92%
5LIMPeruLATAM Airlines Group59%

Top 10 Low-Cost Carrier Airport Megahubs

Kuala Lumpur Airport (KUL) is ranked 1st in the Low-Cost Megahubs Index with 11,188 possible low-cost connections across over 100 destinations. AirAsia is the dominant carrier with a 34% share of flights.

In the Top 25 Low-Cost Megahubs:

  • Asia Pacific airports dominate the rankings with 13 airports (52%).
  • EMEA has eight airports (32%).
  • North America and Latin America have just two airports each in this league.

The dominance of the Asia-Pacific region reflects the high level of LCC penetration in parts of Asia. South Asia, in particular, stands out, boasting the world’s highest share of capacity operated by LCCs, accounting for an impressive 63%. South East Asia closely follows with the second-highest LCC share, where 53% of the region’s total capacity is handled by these carriers.

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In the global ranking of Low-Cost Megahubs, Incheon International Airport (ICN) secures the second position, while Manila’s Ninoy Aquino International Airport (MNL) impressively lands in third place.

RankAirportCountryDominant CarrierShare of Flights
2ICNKorea Republic ofKorean Air22%
3MNLPhilippinesPhilippine Airlines32%
4SINSingaporeSingapore Airlines31%
5CGKIndonesiaBatik Air21%
7DXBUnited Arab EmiratesEmirates39%
8JFKUSADelta Air Lines34%
9BCNSpainVueling Airlines43%
10SAWTurkeyPegasus Airlines60%

Over in North America, New York’s JFK Airport takes the lead as the highest-ranked North American airport among the Top 25 Low-Cost Megahubs in 8th position.

Turning to Europe, Barcelona Airport (BCN) and Istanbul’s Sabiha Gokcen Airport (SAW) make their mark by claiming the top positions among European airports within the Top 25, securing the 9th and 10th spots, respectively.

Data Source: OAG