HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Southeast Asia

$66+ Cheap flights from Seoul (SEL) to Southeast Asia

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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — BKK
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seoul to Southeast Asia with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Seoul to Southeast Asia

Keep the following information in mind while searching for Seoul to Southeast Asia flight deals. Data was last updated September 15, 2025.

Round-trip from

$141
(Jetabroad)

One-way from

$66
(Mytrip)

Popular in

January

Cheapest in

June

Average price

$186
From Seoul (SEL) to Southeast Asia
Search Deals
One-way flight from Seoul (SEL) to Southeast Asia
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Seoul to Southeast Asia

Cheapest flights from Seoul to Southeast Asia
Explore the most affordable flight options available from Seoul to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/218:05 pmICN - BKK
Nonstop5h 50mJeju Air
Wed 9/241:00 amBKK - ICN
Nonstop5h 40mJeju Air
Deal found 9/15$107
This Jeju Air deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/208:05 pmICN - BKK
Nonstop5h 50mJeju Air
Thu 9/251:00 amBKK - ICN
Nonstop5h 40mJeju Air
Deal found 9/15$113
This Jeju Air deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/188:05 pmICN - BKK
Nonstop5h 50mJeju Air
Wed 9/241:00 amBKK - ICN
Nonstop5h 40mJeju Air
Deal found 9/15$136
This Jetabroad deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:00 amICN - MNL
Nonstop4h 30mCebu Pacific
Mon 12/17:35 pmMNL - ICN
Nonstop4h 10mCebu Pacific
Deal found 9/14$141
This Trip.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/141:15 amICN - MNL
Nonstop4h 20mMultiple Airlines
Wed 10/229:30 amMNL - ICN
1 stop7h 50mMultiple Airlines
Deal found 9/14$142
This Jeju Air deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/187:05 pmICN - MNL
Nonstop4h 15mJeju Air
Thu 10/211:20 pmMNL - ICN
Nonstop4h 10mJeju Air
Deal found 9/14$145
This CheapOair deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/262:15 amICN - MNL
Nonstop4h 25mCebu Pacific
Mon 12/17:35 pmMNL - ICN
Nonstop4h 10mCebu Pacific
Deal found 9/15$146
This AirAsia deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure AirAsia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2612:55 pmICN - MNL
Nonstop4h 15mPhilippines AirAsia
Mon 9/297:15 amMNL - ICN
Nonstop3h 55mPhilippines AirAsia
Deal found 9/15$147
This Jin Air deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jin Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/107:55 pmICN - BKK
Nonstop5h 50mJin Air
Thu 10/2312:55 amBKK - ICN
Nonstop5h 30mJin Air
Deal found 9/14$147
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/218:30 pmICN - MNL
Nonstop4h 15mPhilippine Airlines
Thu 9/252:10 pmMNL - ICN
Nonstop4h 10mPhilippine Airlines
Deal found 9/15$148
This Jeju Air deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jeju Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/227:05 pmICN - MNL
Nonstop4h 15mJeju Air
Thu 9/2511:20 pmMNL - ICN
Nonstop4h 10mJeju Air
Deal found 9/14$150
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2012:55 pmICN - MNL
Nonstop4h 15mPhilippines AirAsia
Sun 9/287:15 amMNL - ICN
Nonstop3h 55mPhilippines AirAsia
Deal found 9/15$151

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seoul 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 2,558,603 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Seoul to Southeast Asia that are best for you.

Fly from

Seoul

Fly to

Southeast Asia

Route

Depart

Return

Price

IncheonManila

ICN - MNL

ICNMNL

Incheon Intl

Fri 9/26

12:55 pm-4:10 pm

Nonstop4h 15m

Manila Ninoy Aquino Intl

Mon 9/29

7:15 am-12:10 pm

Nonstop3h 55m

$152

IncheonManila

ICN - MNL

ICNMNL

Incheon Intl

Mon 10/13

7:05 pm-10:20 pm

Nonstop4h 15m

Manila Ninoy Aquino Intl

Sat 11/8

11:20 pm-4:10 am

Nonstop3h 50m

$163

IncheonManila

ICN - MNL

ICNMNL

Incheon Intl

Sun 10/12

7:05 pm-10:20 pm

Nonstop4h 15m

Manila Ninoy Aquino Intl

Tue 10/21

11:20 pm-4:30 am

Nonstop4h 10m

$167

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Fri 10/10

8:05 pm-11:55 pm

Nonstop5h 50m

Bangkok Suvarnabhumi

Sat 10/18

1:00 am-8:40 am

Nonstop5h 40m

$170

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 10/9

8:05 pm-11:55 pm

Nonstop5h 50m

Bangkok Suvarnabhumi

Sat 10/18

1:00 am-8:40 am

Nonstop5h 40m

$170

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 10/9

7:55 pm-11:45 pm

Nonstop5h 50m

Bangkok Suvarnabhumi

Thu 10/16

12:55 am-8:25 am

Nonstop5h 30m

$173

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Mon 12/1

6:05 pm-2:45 pm

1 stop22h 40m

Bangkok Suvarnabhumi

Mon 12/8

3:55 pm-5:30 am

1 stop11h 35m

$174

IncheonManila

ICN - MNL

ICNMNL

Incheon Intl

Tue 10/21

7:05 pm-10:20 pm

Nonstop4h 15m

Manila Ninoy Aquino Intl

Thu 11/6

11:20 pm-4:10 am

Nonstop3h 50m

$174

IncheonManila

ICN - MNL

ICNMNL

Incheon Intl

Fri 12/5

1:00 pm-4:15 pm

Nonstop4h 15m

Manila Ninoy Aquino Intl

Mon 2/23

7:00 am-11:55 am

Nonstop3h 55m

$178

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Thu 10/9

4:50 pm-9:10 pm

Nonstop6h 20m

Bangkok Suvarnabhumi

Sun 10/19

10:45 pm-6:25 am

Nonstop5h 40m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Seoul to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from Seoul with our price prediction graph.
Estimated round-trip 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 Seoul to Southeast Asia

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

Currently, September is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $908). Flying from Seoul to Southeast Asia in December is currently the most expensive (average of $1,518). 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 SEL to YJX?

Find hourly flight availability from Seoul 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 September 15, 2025.

When flying from Seoul to Southeast Asia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Seoul to Southeast Asia

Explore weekly flight availability from Seoul 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 September 15, 2025.

The most flights from SEL to zzYJX are scheduled on a Saturday (34 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (29 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 September 15, 2025.
Get a feel of what it's like to fly with Korean Air, Asiana Airlines, and VietJet Air from Seoul to Southeast Asia by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,139 reviews

Food

8.1

Entertainment

8.2

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

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
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Food

8.1

Entertainment

8.2

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

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!!
Asiana Airlines
8.2
Very good
479 reviews
Korean Air
8.4
Very good
1,139 reviews

Food

8.1

Entertainment

8.2

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

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!!
VietJet Air
5.6
Fair
147 reviews
Korean Air
8.4
Very good
1,139 reviews

Food

8.1

Entertainment

8.2

Overall

8.4

Crew

8.7

Boarding

8.5

Comfort

8.3

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 Seoul 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 Seoul to Southeast Asia?

    Airlines like Philippines AirAsia, Jeju Air, and Jin Air fly from Seoul to Southeast Asia in about 4h 15m. The time it takes to get you to your destination is usually consistent. The distance from Seoul to Southeast Asia is about 1619 mi. All flights are typically nonstop.

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

    The cheapest airlines for a one-way flight from Seoul to Southeast Asia are Philippines AirAsia ($70), Jeju Air ($71), and T'way Air ($97).

  • What are the most popular routes from Seoul to Southeast Asia?

    The most popular flight routes from Seoul to Southeast Asia are Incheon Intl - Bangkok Suvarnabhumi, Seoul Gimpo Intl - Bangkok Suvarnabhumi and Incheon Intl - Ho Chi Minh City.

  • What are the most reliable airlines from Seoul to Southeast Asia?

    Consider EL AL (98%), Turkish Airlines (98%) or AIR PREMIA (98%) when booking your flight. These represent the most reliable airlines when flying from Seoul to Southeast Asia.

  • What are the cheapest flights from Seoul to Southeast Asia?

    Looking at all options, your cheapest flight can be booked for $69. While the most popular route (Incheon Intl - Bangkok Suvarnabhumi) can be booked for $140 on average, our data indicates $580 when flying from Seoul to Southeast Asia.

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

    Yes. In addition to deals on Seoul to Southeast Asia flights, Cheapflights offers vacation packages that include both flights and hotel.

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

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

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

    Yes. Cheapflights offers flight deals from Seoul 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 Seoul to Southeast Asia?

    Currently, September is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $908). Flying from Seoul to Southeast Asia in December is currently the most expensive (average of $1,518). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seoul to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to Suvarnabhumi flights
Incheon Intl to Haneda flights
Cheongju to Jeju City flights
Gimpo Intl to Haneda flights
Daegu to Jeju City flights
Gimpo Intl to Suvarnabhumi flights
Incheon Intl to Narita flights
Incheon Intl to Hongqiao Intl flights
Incheon Intl to Pu Dong flights
Incheon Intl to Jeju City flights
Incheon Intl to Ho Chi Minh City flights
Incheon Intl to Hong Kong flights
Incheon Intl to Taiwan Taoyuan Intl flights
Incheon Intl to Hanoi flights
Incheon Intl to Tashkent flights
Incheon Intl to Guangzhou flights
Gimpo Intl to Jeju City flights
Incheon Intl to Soekarno-Hatta Intl flights
Incheon Intl to Chiang Mai flights
Jeju City to Busan flights
Incheon Intl to Kathmandu flights
Gimpo Intl to Taiwan Taoyuan Intl flights
Gimpo Intl to Kansai Intl flights
Busan to Cebu City flights
Incheon Intl to Nha Trang flights
Incheon Intl to Chitose flights
Gimpo Intl to Hong Kong flights
Incheon Intl to Islamabad flights
Incheon Intl to Capital flights
Incheon Intl to Manila flights
Incheon Intl to Denpasar flights
Gimpo Intl to Manila flights
Gimpo Intl to Hongqiao Intl flights
Incheon Intl to Phuket City flights
Incheon Intl to Dalian flights

Top 10 airlines flying from Seoul to Southeast Asia

Discover the top 10 airlines that operate flights from Seoul 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 2,558,603 searches. Data last updated September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Eastar JetCheapest$60Average$249FlexibilityNo cancel feeOn-time86%
Thai Vietjet AirCheapest$62Average$243FlexibilityNo cancel feeOn-timeN/A
ScootCheapest$79Average$326FlexibilityNo cancel feeOn-timeN/A
AIR PREMIACheapest$109Average$270FlexibilityNo cancel feeOn-timeN/A
AirAsiaCheapest$115Average$246FlexibilityNo cancel feeOn-time66%
Air SeoulCheapest$125Average$163FlexibilityNo cancel feeOn-timeN/A
Cebu PacificCheapest$130Average$231FlexibilityNo cancel feeOn-time64%
Philippines AirAsiaCheapest$131Average$214FlexibilityNo cancel feeOn-time53%
Vietnam AirlinesCheapest$142Average$254FlexibilityNo cancel feeOn-time81%
Air BusanCheapest$162Average$217FlexibilityNo cancel feeOn-time94%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.