Question 1

How far in advance should I book a flight to Southeast Asia?

Accepted Answer

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 $676 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 $566 on momondo.

Question 2

What is the cheapest day to depart on your flight to Southeast Asia?

Accepted Answer

Our data shows that Sunday is the least expensive day to fly to Southeast Asia. Tickets to fly out on this day can be as low as $832. On the other hand, Monday is the most expensive day to depart from Seoul because it is more convenient for both business and leisure travellers. As a result, prices tend to be around $1,091.

Question 3

How many flights depart from Seoul to Southeast Asia on average per week?

Accepted Answer

As of August 2025, there are 318 flights per week flying from Seoul to Southeast Asia. The most common day of the week flights depart is Tue, with 15% of flights taking off on this day.

Question 4

Can stopping save me money on Seoul to Southeast Asia flights?

Accepted Answer

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

Question 5

What is the cheapest month to fly to Southeast Asia?

Accepted Answer

The cheapest month to fly to Southeast Asia from Seoul is in May. Flight prices, which tend to average around $585, are often lower during this time because this is during the off-season. The month of July is another great option to travel to Southeast Asia, with average flight prices from Seoul averaging around $639.

Question 6

What is the cheapest Seoul to Southeast Asia flight route?

Accepted Answer

Fly from Incheon Intl to Chiang Mai for the best Seoul - Southeast Asia flight prices

Question 7

What is the cheapest time of day to depart on your flight to Southeast Asia?

Accepted Answer

At midday is the cheapest time of day to fly from Seoul to Southeast Asia when you can find flight prices for as low as $733. Flying to Southeast Asia at midday is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive, with an average ticket price of $848.

Question 8

How many flights depart from Seoul to Southeast Asia on average per day?

Accepted Answer

45 flights are operational daily from Seoul to Southeast Asia as of August 2025. The most popular departure time for this route is 18:00, with 52% of flights per day taking off in the evening.

Question 9

What cabin class options are available on Seoul to Southeast Asia flights?

Accepted Answer

There are 3 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.

Question 10

What is the cheapest airline that flies from Seoul to Southeast Asia?

Accepted Answer

T'way Air, Jin Air, and AIR PREMIA are the most popular carriers operating from Seoul to Southeast Asia

Question 11

When did momondo last update prices for flights from Seoul to Southeast Asia?

Accepted Answer

Prices for flights from Seoul to Southeast Asia refresh daily.

Question 12

How old do you have to be to fly from Seoul to Southeast Asia?

Accepted Answer

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Seoul to Southeast Asia.

Question 13

What documentation or ID do you need to fly to Southeast Asia?

Accepted Answer

The required travel and health documents for your Southeast Asia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Southeast Asia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Airline	Rating	Free cancellation	Price
Cebu Pacific	PriceFrom $234	Free cancellation	Rating 6.8 201 reviews		Search Cebu Pacific flights
Asiana Airlines	PriceFrom $443	Free cancellation	Rating 8.2 470 reviews		Search Asiana Airlines flights

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Vietnam Airlines flights from Seoul to Southeast Asia

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How to get the cheapest flight ticket from Seoul to Southeast Asia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Southeast Asia?

What is the cheapest day to depart on your flight to Southeast Asia?

What is the cheapest time of day to depart on your flight to Southeast Asia?

What is the cheapest Seoul to Southeast Asia flight route?

Fly from Incheon Intl to Chiang Mai for the best Seoul - Southeast Asia flight prices

How far in advance should I book a flight to Southeast Asia?

What cabin class options are available on Seoul to Southeast Asia flights?

There are 3 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.

Can stopping save me money on Seoul to Southeast Asia flights?

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

What is the cheapest airline that flies from Seoul to Southeast Asia?

T'way Air, Jin Air, and AIR PREMIA are the most popular carriers operating from Seoul to Southeast Asia

How many flights depart from Seoul to Southeast Asia on average per day?

45 flights are operational daily from Seoul to Southeast Asia as of August 2025. The most popular departure time for this route is 18:00, with 52% of flights per day taking off in the evening.

How many flights depart from Seoul to Southeast Asia on average per week?

As of August 2025, there are 318 flights per week flying from Seoul to Southeast Asia. The most common day of the week flights depart is Tue, with 15% of flights taking off on this day.

When did momondo last update prices for flights from Seoul to Southeast Asia?

How old do you have to be to fly from Seoul to Southeast Asia?

What documentation or ID do you need to fly to Southeast Asia?

What is the most popular plane model from Seoul to Southeast Asia?

Best airlines flying from Seoul to Southeast Asia

Compare and see reviews for airlines that fly from Seoul to Southeast Asia with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Seoul to Southeast Asia?

Can I find flights from Seoul to Southeast Asia with flexible booking policies on momondo?

How can momondo help me find flights from Seoul to Southeast Asia?

I’m not ready to book a flight from Seoul to Southeast Asia right now. Can momondo alert me if prices change?

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