Cheap flights from Hong Kong to Southeast Asia from C$ 119

The cheapest month to fly to Southeast Asia from Hong Kong is in September. Flight prices, which tend to average around C$ 159, are often lower during this time because this is during the off-season. If you don’t want to visit Southeast Asia in September, then you should wait until August to fly from Hong Kong, when ticket prices are also cheap, with an average price of C$ 181.

The cheapest day to depart from Hong Kong to Southeast Asia is on a Friday when prices can be found for as low as C$ 253. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around C$ 466. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southeast Asia.

According to our data, the cheapest time of day to fly to Southeast Asia is in the afternoon. momondo users have found flights departing from Hong Kong to Southeast Asia in the afternoon for as low as C$ 207. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Southeast Asia are more costly at noon, with an average ticket price of C$ 869. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Hong Kong Intl to Bangkok Don Mueang Intl for the best Hong Kong Intl - Southeast Asia flight prices

You are more likely to see cheaper flights to Southeast Asia from Hong Kong when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around C$ 222 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from Hong Kong for as low as C$ 204 on momondo.

There are 4 cabin classes available to choose from on Hong Kong Intl to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

AirAsia, United Airlines, and Malaysia Airlines are the most popular carriers operating from Hong Kong Intl to Southeast Asia

HK Express, Cathay Pacific and Singapore Airlines are the top three most popular airlines that fly to Southeast Asia from Hong Kong according to our data. HK Express is the first choice among our users, with 58% of people opting to fly with this airline when travelling to Southeast Asia. Keep in mind that there are 9 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

As of March 2026, there are 179 flights per day flying from Hong Kong to Southeast Asia. The most common time of day flights depart is 4:00p.m., with 36% of flights taking off in the afternoon.

The number of flights available between Hong Kong and Southeast Asia is 1,256 per week as of March 2026. The most frequent departure day is Fri, with 17% of weekly flights leaving on this day.