China Southern has launched three new domestic services from the nation's capital including its first service between Beijing and Shanghai (Hongqiao).

A plane, flying from London, made an emergency landing in Indian economic hub Mumbai Sunday afternoon without casualty, Indo-Asian News Service reported.

British travellers are facing a fourth day of delays on Sunday as up to a third of flights from Heathrow Airport are set to be cancelled.

The United States remains on high alert over terror threats even after the busting of a plot targeting inbound flights from Britain, a senior U.S. official said on Sunday.

Air traffic at UK airports recovered from last Thursday's security alert, with the number of cancellations already easing drastically by Friday.British Airways operated a "near normal" schedule, with 70% of its scheduled short-haul and domestic services to and from London Heathrow departing as well as all long-haul flights with the exception of six services to the US. Most of its London Gatwick services and nearly all of its regional flights under the BA Connect banner were completed, albeit with some delays.

US airports approached normalcy on Friday, which was "just like any other summer day," according to an Air Transport Assn. spokesperson, as UK Home Secretary John Reid said authorities now believe all the main players in the alleged plot to bomb aircraft flying transatlantic routes to the US have been arrested.Reid added that airport security will remain in a "critical" state to "err on the side of caution" in case some conspirators are still at large. UK authorities said they worked closely with Pakistan on the case, with the alleged plotters under surveillance for at least a month, and some reports suggested the counterterror operation had been ongoing for several months. Authorities in the US and UK said the attacks were possibly just days away from being carried out when the arrests were made Thursday.

China's General Administration of Civil Aviation (CAAC) ordered tight airport security across the nation on Friday after British police foiled a terrorist plot to blow up aircraft between the United Kingdom and the United States.

In South Australia, Adelaide Airport's new $260 million state-of-the-art terminal features no fewer than 98 Turbosound loudspeakers. The 75,000sq.m terminal will initially cater for more than five million passengers a year, but has been designed to cope with up to eight million users within 10 years. The terminal is equipped to handle up to 27 aircraft simultaneously, and process 3,000 passengers an hour during peak periods.