Cheap flights from Incheon Intl Airport to Southeast Asia from $43

The month of September is, on average, the cheapest month to fly to Southeast Asia from Incheon Intl Airport, with most prices found around $156. If you don’t want to visit Southeast Asia in September, then you should wait until May to fly from Incheon Intl Airport, when ticket prices are also cheap, with an average price of $170.

The cheapest day to depart from Incheon Intl Airport to Southeast Asia is on a Tuesday when prices can be found for as low as $295. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $349. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southeast Asia.

At noon is the cheapest time of day to fly from Incheon Intl Airport to Southeast Asia when you can find flight prices for as low as $265. Flying to Southeast Asia at noon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $315. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Incheon Intl to Angeles City Clark Intl for the best Incheon Intl - Southeast Asia flight prices

You are more likely to see cheaper flights to Southeast Asia from Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around $227 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from Incheon Intl Airport for as low as $192 on momondo.

There are 3 cabin classes available to choose from on Incheon 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.

Jeju Air, Eastar Jet, and VietJet Air are the most popular carriers operating from Incheon Intl to Southeast Asia

Asiana Airlines, Korean Air and VietJet Air are the top three most popular airlines that fly to Southeast Asia from Incheon Intl Airport according to our data. Asiana Airlines is the first choice among our users, with 29% of people opting to fly with this airline when traveling to Southeast Asia. Keep in mind that there are 26 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

As of February 2026, there are 155 flights per day flying from Incheon Intl Airport to Southeast Asia. The most common time of day flights depart is 6:00PM, with 47% of flights taking off in the evening.

As of February 2026, there are 1,085 flights per week flying from Incheon Intl Airport to Southeast Asia. The most common day of the week flights depart is Wed, with 15% of flights taking off on this day.