Dubai International Airport (DXB) has retained its crown of being the world's busiest international airport in terms of passenger numbers. In 2014, it overtook London's Heathrow airport, which had been number one for more than a decade. DXB handled a record 78 million travellers in 2015. This is an average of one passenger flying in or out every 2.5 seconds. Heathrow handled 75 million passengers but did have more daily flights than DXB. In January 2015, there were over 8,000 weekly flights from DXB, operated by 140 airlines to over 270 destinations on six continents. Dubai's other airport, Al Maktoum International, has a projected annual capacity of up to 250 million passengers..