Asian airlines scrambled on Saturday to fix a software glitch on their Airbus 320 jets as a sweeping recall by the European planemaker grounded aircraft across the region after disrupting travel in the United States during the busiest weekend of the year.

The recall of 6,000 planes covers more than half of Airbus' global 320 family fleet, the backbone of Asian short-haul aviation, particularly in China and India where economic growth has brought millions of new travellers into the skies.

Regulators around the world followed the European Union Aviation Safety Agency in directing their carriers to remedy the A320 software problem before resuming flights.

Hong Kong budget carrier HK Express said it had upgraded more than half its affected aircraft and that flight operations were normal.

The Civil Aviation Authority of Macao said it had asked Air Macau to address the issue, including rescheduling flights to minimise any disruption to passengers.

ANA Holdings, Japan's biggest airline, cancelled 65 flights on Saturday and warned of more disruptions on Sunday.

ANA and its affiliates, such as Peach Aviation, operate the most Airbus A320 jets in Japan. Its chief rival, Japan Airlines , has a mostly Boeing fleet and does not fly the A320. Nationwide, 95 flights were cancelled, according to public broadcaster NHK.

Jetstar, the budget carrier of Australia's flag carrier Qantas, said some of its flights would be affected by the recall. The Australian Broadcasting Corp reported significant delays at Melbourne airport.

South Korea's Asiana Airlines said it does not expect any significant disruptions to its flight schedule, with only 17 of its aircraft affected by the recall. Its domestic rival, Korean Air, said it was working to get 10 of its jets back into service.

South Korea's Transport Ministry said upgrades to 42 aircraft there were expected to be completed by Sunday morning.

India's aviation regulator said 338 Airbus aircraft in the country were affected but said the software reset would be completed by Sunday. The country's largest airline, IndiGo, has completed the software reset on 143 out of 200 aircraft, the regulator said.

Air India, which has 113 impacted aircraft, has completed the reset on 42 aircraft. Both airlines warned of delays on Saturday. (Reuters)