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Cheap flights from South Korea to Southeast Asia from S$ 106

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7-3. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — BKK
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from South Korea to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest flights from South Korea to Southeast Asia
Explore the most affordable flight options available from South Korea to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 December 2025.

Thu 18-1207:35ICN - SIN
1 stop11h 25mMultiple Airlines
Sun 18-103:00SIN - ICN
Nonstop6h 15mMultiple Airlines
Deal found 11-12S$ 315
Sat 13-1209:55CJU - SIN
1 stop15h 15mMultiple Airlines
Fri 2-102:30SIN - CJU
Nonstop6h 00mMultiple Airlines
Deal found 11-12S$ 322
Wed 24-1208:55CJU - SIN
Nonstop6h 20mScoot
Sat 17-111:55SIN - CJU
Nonstop6h 00mScoot
Deal found 9-12S$ 326
Tue 16-1217:55ICN - SIN
1 stop18h 40mMultiple Airlines
Tue 6-123:00SIN - ICN
Nonstop6h 35mMultiple Airlines
Deal found 10-12S$ 332
Fri 19-1217:45PUS - SIN
Nonstop6h 40mJeju Air
Sat 27-1200:25SIN - PUS
Nonstop6h 40mJeju Air
Deal found 10-12S$ 332
Wed 17-1207:35ICN - SIN
1 stop13h 05mMultiple Airlines
Tue 30-1201:10SIN - ICN
Nonstop6h 30mMultiple Airlines
Deal found 11-12S$ 334
Wed 17-1207:35ICN - SIN
1 stop9h 35mMultiple Airlines
Wed 17-1222:35SIN - ICN
1 stop16h 25mMultiple Airlines
Deal found 10-12S$ 335
Sat 13-1207:25CJU - SIN
1 stop17h 45mJeju Air
Fri 2-100:25SIN - CJU
1 stop16h 55mJeju Air
Deal found 11-12S$ 337
Thu 18-1219:45CJU - SIN
Nonstop6h 45mT'way Air
Thu 1-102:30SIN - CJU
Nonstop6h 00mT'way Air
Deal found 10-12S$ 339
Fri 12-1207:35ICN - SIN
1 stop9h 35mMultiple Airlines
Mon 5-123:00SIN - ICN
Nonstop6h 35mMultiple Airlines
Deal found 10-12S$ 341
Thu 11-1214:20ICN - SIN
2 stops23h 35mChina Eastern
Tue 16-1202:40SIN - ICN
1 stop19h 05mChina Eastern
Deal found 9-12S$ 344
Wed 17-1207:35ICN - SIN
1 stop9h 35mMultiple Airlines
Thu 8-101:10SIN - ICN
Nonstop6h 30mMultiple Airlines
Deal found 11-12S$ 345

Find flight deals from South Korea to Southeast Asia

Keep the following information in mind while searching for South Korea to Southeast Asia flight deals. Data was last updated 12 December 2025.

Round-trip from

S$ 149

One-way from

S$ 106

Popular in

January

Cheapest in

September

Average price

S$ 361
Spring Airlines
  • Spring Airlines
  • 15-1-20-1
  • 1 total stop
  • 28h 20m total
  • South Korea to Southeast Asia
Search Deals
Scoot
  • Scoot
  • 7-3
  • Nonstop
  • 6h 15m total
  • South Korea to Southeast Asia
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (S$ 129 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (S$ 18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from South Korea to Southeast Asia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 200,618 searches. Data last updated 12 December 2025.
Use the filters below to find and compare flights from South Korea to Southeast Asia that are best for you.

Fly from

South Korea

Fly to

Southeast Asia

Route

Depart

Return

Price

Jeju CitySingapore

CJU - SIN

CJUSIN

Jeju City

Thu 22-1

19:55-01:10

Nonstop6h 15m

Singapore Changi

Sun 25-1

00:25-07:20

Nonstop5h 55m

S$ 269

Jeju CitySingapore

CJU - SIN

CJUSIN

Jeju City

Thu 5-2

19:45-01:30

Nonstop6h 45m

Singapore Changi

Sun 8-2

02:30-09:30

Nonstop6h 00m

S$ 269

Jeju CitySingapore

CJU - SIN

CJUSIN

Jeju City

Mon 2-3

08:55-14:15

Nonstop6h 20m

Singapore Changi

Thu 5-3

12:00-18:55

Nonstop5h 55m

S$ 270

Jeju CitySingapore

CJU - SIN

CJUSIN

Jeju City

Sun 8-2

19:45-01:30

Nonstop6h 45m

Singapore Changi

Tue 10-2

02:30-09:30

Nonstop6h 00m

S$ 284

Jeju CitySingapore

CJU - SIN

CJUSIN

Jeju City

Thu 22-1

19:45-01:30

Nonstop6h 45m

Singapore Changi

Mon 26-1

02:30-09:30

Nonstop6h 00m

S$ 284

Jeju CitySingapore

CJU - SIN

CJUSIN

Jeju City

Mon 26-1

19:45-01:30

Nonstop6h 45m

Singapore Changi

Thu 29-1

02:30-09:30

Nonstop6h 00m

S$ 284

Jeju CitySingapore

CJU - SIN

CJUSIN

Jeju City

Fri 30-1

19:45-01:30

Nonstop6h 45m

Singapore Changi

Sun 1-2

02:30-09:30

Nonstop6h 00m

S$ 284

Jeju CitySingapore

CJU - SIN

CJUSIN

Jeju City

Thu 29-1

19:45-01:30

Nonstop6h 45m

Singapore Changi

Sun 1-2

02:30-09:30

Nonstop6h 00m

S$ 284

Jeju CitySingapore

CJU - SIN

CJUSIN

Jeju City

Thu 29-1

19:45-01:30

Nonstop6h 45m

Singapore Changi

Fri 30-1

02:30-09:30

Nonstop6h 00m

S$ 284

IncheonSingapore

ICN - SIN

ICNSIN

Incheon Intl

Tue 10-3

18:20-00:10

Nonstop6h 50m

Singapore Changi

Mon 16-3

01:10-08:40

Nonstop6h 30m

S$ 326

Flights are sorted by cheapest return flights first.

Deals found on 11-12

Showing 1-10 of 60 results
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Best time to book a flight from South Korea to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from South Korea with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from South Korea to Southeast Asia

What is the cheapest month to book a flight from South Korea to Southeast Asia?

Currently, November is the cheapest month in which you can book a flight from South Korea to Southeast Asia (average of S$ 124). Flying from South Korea to Southeast Asia in January is currently the most expensive (average of S$ 226). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from KR to YJX?

Find hourly flight availability from South Korea to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 December 2025.

It’s typically best to fly out from South Korea to Southeast Asia at midday. Doing so could potentially save you 27% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from South Korea to Southeast Asia?

Use this chart to determine the cheapest time to fly return from South Korea to Southeast Asia. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their South Korea to Southeast Asia flight should consider departing on Thursday afternoons when fares are most often at their lowest. Tuesday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from South Korea to Southeast Asia

Explore weekly flight availability from South Korea to Southeast Asia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 12 December 2025.

The most flights from KR0 to zzYJX are scheduled on a Wednesday (46 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (42 on average).

Reviews of airlines servicing Southeast Asia

Get insights into the airlines that provide service to Southeast Asia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southeast Asia. Reviews last updated 12 December 2025.
Read through reviews of airlines operating flights from South Korea to Southeast Asia, such as Korean Air, Singapore Airlines, andJeju Air. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,184 reviews
Check prices

Boarding

8.5

Food

8.1

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very Good
1,184 reviews
Korean Air
8.4
Very Good
1,184 reviews
Check prices

Boarding

8.5

Food

8.1

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Singapore Airlines
8.1
Very Good
1,412 reviews
Korean Air
8.4
Very Good
1,184 reviews
Check prices

Boarding

8.5

Food

8.1

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Jeju Air
7.6
Good
36 reviews
Korean Air
8.4
Very Good
1,184 reviews
Check prices

Boarding

8.5

Food

8.1

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Scoot
6.7
Okay
311 reviews
Korean Air
8.4
Very Good
1,184 reviews
Check prices

Boarding

8.5

Food

8.1

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

Find useful and relevant information for your journey from South Korea to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from South Korea to Southeast Asia?

    For as low as S$ 269, Scoot can have you in Southeast Asia from South Korea in 6h 15m. There are 4273 km between South Korea and Southeast Asia. All flights are typically direct.

  • What are the cheapest airlines to fly from South Korea to Southeast Asia one-way?

    For one-way options, check prices for Jeju Air. According to our data, you can fly for as low as S$ 70. Users have also found prices from S$ 81 and S$ 83 on Cebu Pacific and T'way Air, respectively.

  • Can I find deals for flights from South Korea to Southeast Asia that include hotel bookings?

    Yes. In addition to deals on South Korea to Southeast Asia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from South Korea to Southeast Asia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from South Korea to Southeast Asia.

  • Can I find deals for business class flights from South Korea to Southeast Asia?

    Yes. Cheapflights offers flight deals from South Korea to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from South Korea to Southeast Asia?

    Currently, November is the cheapest month in which you can book a flight from South Korea to Southeast Asia (average of S$ 124). Flying from South Korea to Southeast Asia in January is currently the most expensive (average of S$ 226). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for South Korea to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from South Korea to Southeast Asia

Discover the top 6 airlines that operate flights from South Korea to Southeast Asia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 200,618 searches. Data last updated 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
ScootCheapestS$ 157AverageS$ 684FlexibilityNo cancel feeOn-timeN/A
Search Scoot flights
T'way AirCheapestS$ 239AverageS$ 334FlexibilityNo cancel feeOn-time88%
Search T'way Air flights
Jeju AirCheapestS$ 243AverageS$ 471FlexibilityNo cancel feeOn-timeN/A
Search Jeju Air flights
Singapore AirlinesCheapestS$ 380AverageS$ 540FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Asiana AirlinesCheapestS$ 383AverageS$ 472FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Korean AirCheapestS$ 400AverageS$ 909FlexibilityNo cancel feeOn-time81%
Search Korean Air flights

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How does Cheapflights help users find flights from South Korea to Southeast Asia?

Cheapflights makes it easy to find South Korea to Southeast Asia flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from South Korea to Southeast Asia?

Cheapflights helps you find that perfect flight to Southeast Asia from South Korea by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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