Find HK Express(UO) flights from Hong Kong to Singapore

At the moment, you can catch a nonstop flight from Hong Kong to Singapore with the following airlines, including: Cathay Pacific Scoot Singapore Airlines HK Express AirAsia Berhad (Malaysia) Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

It takes about 4 hours 1 minute to fly from Hong Kong to Singapore.

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Hong Kong to Singapore is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

Based on Trip.com data in the past 4 weeks, there is 105 flight per week flying from Hong Kong to Singapore. You can check the weekly schedule for popular airlines on this route below: Cathay Pacific: S/M/T/W/T/F/S -- CX657 (16:23)

The cheapest months to fly from Hong Kong to Singapore is October, when demand for travel is lower.

After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Hong Kong to Singapore on December 18, 2025 with HK Express, with prices starting at SGD 148.

You can land at any one of the following hubs in Singapore, with Hong Kong International Airport to Singapore Changi Airport (HKG-SIN) is by far the most common option on this route: Singapore Changi Airport (SIN) Seletar Airport (XSP).

The time difference between Singapore and Hong Kong is 0h.

Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.