Cheap flights from Seoul to Southeast Asia from $132

The cheapest month to fly to Southeast Asia from Seoul is in September. Flight prices, which tend to average around $303, are often lower during this time because this is during the off-season. The month of March is another great option to travel to Southeast Asia, with average flight prices from Seoul averaging around $341.

In the afternoon is the cheapest time of day to fly from Seoul to Southeast Asia when you can find flight prices for as low as $821. Flying to Southeast Asia in the afternoon is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive, with an average ticket price of $906.

Fly from Incheon Intl to Kota Kinabalu for the best Seoul - Southeast Asia flight prices

You are more likely to see cheaper flights to Southeast Asia from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around $683 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from Seoul for as low as $600 on momondo.

There are 2 cabin classes available to choose from on Seoul to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Seoul to Southeast Asia.

43 flights are operational daily from Seoul to Southeast Asia as of September 2026. The most popular departure time for this route is 18:00, with 52% of flights per day taking off in the evening.

As of September 2026, there are 302 flights per week flying from Seoul to Southeast Asia. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.