London Heathrow Top Connectivity Airport 2018 | OAG

Megahubs International Index 2018

London Heathrow is Once Again the World’s Most Internationally Connected Airport, According to OAG’s 2018 Megahubs Index 

Key Findings

  • London Heathrow Airport (LHR) ranks as the most internationally connected airport across the globe for the second straight year.
  • Chicago O’Hare (ORD) is the second most internationally connected airport in the world; increasing its Connectivity Index by 11 points over last year.
  • Singapore (SIN) is the most-connected Megahub in the Asia Pacific and the third most-connected among low-cost international Megahubs.
  • The Asia Pacific region secured ten of the top 25 positions in the Low-Cost International Megahub category.
  • Major European hubs Frankfurt (FRA) and Amsterdam (AMS) are the third and fourth most connected international airports in the world, respectively.

Luton, United Kingdom, 18 September 2018: According to the latest data from OAG, the leading provider of digital flight information, London Heathrow is the most internationally connected airport in the world for the second straight year, securing the number one spot in OAG’s Megahubs International Index 2018.

Released today, OAG’s annual report reveals the world’s top 50 most-connected airports for international services, as measured by the highest ratio of scheduled connections to the number of destinations served.

London Heathrow (LHR) scored a Connectivity Index (CI) of 333 – 27 points higher than the second most connected international airport, Chicago O’Hare (ORD; CI: 306). On its busiest day over the past year, there were over 66,000 possible international connections between flights arriving and departing London Heathrow within a six-hour window. British Airways was the dominant carrier at LHR – controlling 52 percent of flights at the airport over the past year.

Ross Baker, Chief Commercial Officer for Heathrow said; “We are delighted to play our part in connecting Britain to global growth, and be recognised as the world’s number 1 Megahub for a second consecutive year. We are continuing to grow connections and this year we celebrated our 10th direct route to China, with four additional Chinese airlines flying from Heathrow.

“Passenger numbers continue to reach new heights and with the green light for expansion this summer, we’re working hard to connect even more corners of the UK to the world and maximise the opportunities that Britain’s new runway will bring.”

“Heathrow is a key connection point for flights all over the world due to its proximity to key EMEA markets and North America,” said John Grant, senior analyst at OAG. “As OAG identified in a recent analysis on Heathrow’s plans to develop a third runway, expansion opportunities will eventually strengthen the airport’s position as the leader in global connectivity by increasing capacity and service to both emerging markets and key European destinations.”

The Asia Pacific region dominated in the Low-Cost International Megahub category, securing ten out of the top 25 positions. The top three spots for low-cost connections stayed the same from 2017 to 2018, with Kuala Lumpur Airport (KUL; CI: 135) ranking first, followed by Jakarta (CGK; CI: 92) and Singapore Changi airport (SIN; CI: 91). While Beijing Airport (PEK: CI: 148) is the largest airport in the world in terms of scheduled airline capacity (seats), the airport finished 32nd in International Connectivity.

“Megahubs are incredibly important for the global travel ecosystem. They increase efficiency, competition and choice, and most importantly, create a boundary-less world for travelers,” added Grant. “Looking ahead, all eyes will be on Beijing’s new Daxing airport. With eight runways serving 100 million passengers annually, we expect it to become one of the busiest and most internationally connected hubs in the world.”

Additional highlights from OAG’s Megabubs International Index include:

  • Singapore Changi Airport (SIN; CI: 253) ranks 8th overall on the list of Top 50 International Megahubs, followed by Jakarta Airport (CGK; CI: 249) in 10th place. Kuala Lumpur (KUL: CI: 233), Hong Kong (HKG; CI: 230), Bangkok (BKK; CI: 230) and Icheon (ICN; CI: 216) all made the top 15.
  • The Philippines’ Manila airport (MNL; CI: 146) jumped from 12th to fourth in the Low Cost International Megahub section. Cebu Pacific Airlines operates a third of the flights as the dominant carrier of this hub.
  • Seven out of the top 10 most connected airports had a single carrier operating 40 percent or more of the flights. Delta Air Lines operated 73 percent of flights at Hartsfield–Jackson Atlanta International Airport (7th overall) and Lufthansa operated 63 percent of flights at Frankfurt (3rd overall).

OAG’s Megahubs International Index goes beyond the size of an airport’s route network and measures the number of connections possible within a specific time frame and the relative attractiveness of each airport as a connecting point for scheduled domestic air passengers.

The index harnesses the world’s most comprehensive schedules database to dynamically build connections through a dedicated analytics platform, Connections Analyser, and is further enhanced by OAG’s Minimum Connection Time Exceptions Table. OAG has calculated the total number of all possible connections between inbound and outbound flights within a six-hour window, on the busiest day for global aviation for the 12 months through July 2018.

OAG’s full Megahubs International Index 2018 can be downloaded at:


Top 10 international megahubs for connectivity

  1. London Heathrow, UK
  2. Chicago, USA
  3. Frankfurt, Germany
  4. Amsterdam, Netherlands
  5. Toronto, Canada
  6. Los Angeles, USA
  7. Atlanta, USA
  8. Changi, Singapore
  9. Paris Charles de Gaulle, FranceSoekarno-Hatta, Indonesia

About OAG 
OAG is the leading provider of digital flight information and their customers span the entire global travel ecosystem from airlines, airports, government agencies and aircraft manufacturers to travel technology leaders and service providers. 

At the forefront of the travel market for years, they have the world’s largest network of air travel data including the definitive schedules database of more than 980 airlines and the most extensive flight status information database in the market, tracking 96% of commercial flights.

OAG helps their customers solve strategic, commercial and operational problems through wide variety of solutions from data APIs, dynamic multi-frequency data feeds to delivery of high value business insight through their analytics platform. 

Today, OAG’s customer network includes the world’s largest airlines and airports, online travel agents (OTAs), the largest booking engine in Europe and the top travel, technology and ecommerce leaders across China, India, Indonesia, Latin America and North America. 
Headquartered in the UK, OAG has global operations in the USA, Singapore, Japan, Lithuania and China.

For more information, visit: and follow us on Twitter @OAG Aviation.

For further press information:
Nicole Ngoon
Corporate Ink for OAG