Cheap flights from Incheon Intl Airport to Southeast Asia from C$ 100

The cheapest month to fly to Southeast Asia from Incheon Intl Airport is in June. Flight prices, which tend to average around C$ 214, are often lower during this time because this is during the off-season. If you don’t want to visit Southeast Asia in June, then you should wait until August to fly from Incheon Intl Airport, when ticket prices are also cheap, with an average price of C$ 246.

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 C$ 277. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around C$ 570. 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 morning. momondo users have found flights departing from Incheon Intl Airport to Southeast Asia in the morning for as low as C$ 358. 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$ 421. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Incheon Intl to Bangkok Suvarnabhumi 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 C$ 318 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 C$ 257 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, AIR PREMIA, and Shandong Airlines are the most popular carriers operating from Incheon Intl to Southeast Asia

Thai AirAsia X, VietJet Air and T'way Air are the top three most popular airlines that fly to Southeast Asia from Incheon Intl Airport according to our data. Thai AirAsia X is the first choice among our users, with 33% of people opting to fly with this airline when travelling to Southeast Asia. Keep in mind that there are 6 different airlines that fly to Southeast Asia on a routine basis, so you have a few additional options to choose from.

The number of flights available between Incheon Intl Airport and Southeast Asia is 41 per day as of March 2026. The most frequent departure time is 6:00p.m., with 44% of daily flights leaving in the evening.

As of March 2026, 289 flights take off from Incheon Intl Airport and land in Southeast Asia each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.