Trip.com has unveiled its 5.5 May Autumn Mega Sale, offering Australian travellers some of the year’s most competitive fares and hotel deals in a single day of timed drops on May 5.

Highlights include $29 domestic fares connecting Sydney, Melbourne, Brisbane, Adelaide and the Gold Coast, international flights to Bali from $109 and Ho Chi Minh City from $149, and hotel coupons of up to 50 per cent off on minimum two-night stays.

The 12-hour schedule of offers runs throughout the day with drops at 6am, 11:30am, 12pm, 2pm and 6pm (AEST), covering airline coupons from Vietnam Airlines, Thai Airways and China Airlines, flight and hotel promo codes, eSIM deals, Buy 1 Get 1 Free attractions across Australia, New Zealand and Asia, and 50 per cent off car hire and package tours.

Travellers booking flights from eligible Australian cities to Singapore between midnight May 5 and 2am May 6 can enter a draw to win a two-night stay at Hotel Indigo Singapore Katong by IHG.

Running alongside the sale until May 29, the Seek Southeast Asia campaign in collaboration with Sydney Airport offers Sydney-based travellers flight vouchers of up to $100 off paired with five per cent discounts on hotel stays of three nights or more, covering Thailand, Vietnam, Singapore, Indonesia, Malaysia and the Philippines.

Travellers booking flights from Sydney to Thailand can also enter a draw for a two-night luxury stay at a five-star beach resort in Koh Samui.

For more information and to download the app visit au.trip.com.