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Southeast Asia

$68+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — BKK
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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Cheap 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 March 23, 2026.

This Booking.com deal was found by Cheapflights users on 3/21. 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.
Wed 10/146:45 am
ICN
-
CXR
Nonstop4h 50m
VietJet Air
Sun 10/184:05 pm
CXR
-
ICN
1 stop25h 20m
VietJet Air
Deal found 3/21$159
This T'way Air deal was found by Cheapflights users on 3/20. 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 T'way Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:00 pm
ICN
-
BKK
Nonstop6h 05m
T'way Air
Thu 6/1112:05 am
BKK
-
ICN
Nonstop5h 35m
T'way Air
Deal found 3/20$160
This T'way Air deal was found by Cheapflights users on 3/18. 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 T'way Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/86:00 pm
ICN
-
BKK
Nonstop6h 05m
T'way Air
Tue 6/912:05 am
BKK
-
ICN
Nonstop5h 35m
T'way Air
Deal found 3/18$161
This Super.com deal was found by Cheapflights users on 3/19. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/116:05 pm
ICN
-
BKK
1 stop22h 40m
Vietnam Airlines
Tue 5/1910:15 pm
BKK
-
ICN
1 stop16h 20m
Vietnam Airlines
Deal found 3/19$166
This Super.com deal was found by Cheapflights users on 3/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/710:05 am
ICN
-
BKK
1 stop13h 00m
Vietnam Airlines
Sun 5/1710:15 pm
BKK
-
ICN
1 stop16h 20m
Vietnam Airlines
Deal found 3/18$167
This Super.com deal was found by Cheapflights users on 3/18. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:05 pm
ICN
-
BKK
1 stop22h 40m
Vietnam Airlines
Sun 5/1710:15 pm
BKK
-
ICN
1 stop16h 20m
Vietnam Airlines
Deal found 3/18$169
This T'way Air deal was found by Cheapflights users on 3/22. 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 T'way Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/186:00 pm
ICN
-
BKK
Nonstop6h 05m
T'way Air
Fri 10/2312:05 am
BKK
-
ICN
Nonstop5h 35m
T'way Air
Deal found 3/22$171
This T'way Air deal was found by Cheapflights users on 3/20. 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 T'way Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/296:00 pm
ICN
-
BKK
Nonstop6h 05m
T'way Air
Wed 7/112:05 am
BKK
-
ICN
Nonstop5h 35m
T'way Air
Deal found 3/20$172
This T'way Air deal was found by Cheapflights users on 3/18. 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 T'way Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/296:00 pm
ICN
-
BKK
Nonstop6h 05m
T'way Air
Fri 7/312:05 am
BKK
-
ICN
Nonstop5h 35m
T'way Air
Deal found 3/18$173
This Trip.com deal was found by Cheapflights users on 3/19. 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.
Sat 6/66:05 pm
ICN
-
BKK
1 stop22h 40m
Vietnam Airlines
Thu 6/1111:55 am
BKK
-
ICN
1 stop15h 55m
Vietnam Airlines
Deal found 3/19$175
This Booking.com deal was found by Cheapflights users on 3/22. 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.
Thu 10/811:40 am
ICN
-
CXR
1 stop29h 55m
VietJet Air
Thu 10/1510:35 am
CXR
-
ICN
1 stop17h 40m
VietJet Air
Deal found 3/22$176
This T'way Air deal was found by Cheapflights users on 3/18. 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 T'way Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/257:50 pm
ICN
-
BKK
Nonstop6h 20m
T'way Air
Fri 4/1712:05 am
BKK
-
ICN
Nonstop5h 35m
T'way Air
Deal found 3/18$176

Find 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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$160
(T'way Air)

One-way from

$68
(VietJet Air)

Popular in

October

Cheapest in

June

Average price

$211
Provider with most accurate pricing for Seoul (SEL)-Manila Ninoy Aquino Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seoul (SEL)-Manila Ninoy Aquino Intl flights.
Search Deals
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 ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 23, 2026.
Use the filters below to find and compare flights from Seoul to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonSingapore

ICN - SIN

ICNSIN

Incheon Intl

Tue 4/14

6:10 pm-11:40 pm

Nonstop6h 30m

Singapore Changi

Sat 4/18

12:50 am-8:40 am

Nonstop6h 50m

$186

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 6/6

6:00 pm-10:05 pm

Nonstop6h 05m

Bangkok Suvarnabhumi

Wed 6/10

12:05 am-7:40 am

Nonstop5h 35m

$194

IncheonHanoi

ICN - HAN

ICNHAN

Incheon Intl

Wed 5/13

8:40 pm-11:45 pm

Nonstop5h 05m

Hanoi Noibai

Sat 5/16

12:45 am-7:35 am

Nonstop4h 50m

$197

IncheonSingapore

ICN - SIN

ICNSIN

Incheon Intl

Wed 4/22

3:50 pm-9:30 pm

Nonstop6h 40m

Singapore Changi

Sun 4/26

11:00 pm-6:45 am

Nonstop6h 45m

$199

IncheonHanoi

ICN - HAN

ICNHAN

Incheon Intl

Fri 8/7

3:30 pm-1:50 am

1 stop12h 20m

Hanoi Noibai

Sun 8/23

2:50 am-2:30 pm

1 stop9h 40m

$201

IncheonSingapore

ICN - SIN

ICNSIN

Incheon Intl

Sat 5/16

6:10 pm-11:40 pm

Nonstop6h 30m

Singapore Changi

Mon 5/18

12:50 am-8:40 am

Nonstop6h 50m

$210

IncheonNha Trang

ICN - CXR

ICNCXR

Incheon Intl

Mon 6/29

9:25 pm-12:35 am

Nonstop5h 10m

Nha Trang Cam Ranh

Thu 7/2

1:35 am-8:45 am

Nonstop5h 10m

$210

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Fri 7/3

6:00 pm-10:05 pm

Nonstop6h 05m

Bangkok Suvarnabhumi

Tue 7/7

12:05 am-7:40 am

Nonstop5h 35m

$212

IncheonHanoi

ICN - HAN

ICNHAN

Incheon Intl

Tue 5/5

8:40 pm-11:45 pm

Nonstop5h 05m

Hanoi Noibai

Mon 5/11

12:45 am-7:35 am

Nonstop4h 50m

$212

IncheonNha Trang

ICN - CXR

ICNCXR

Incheon Intl

Mon 6/15

10:05 am-6:30 pm

1 stop10h 25m

Nha Trang Cam Ranh

Thu 6/18

7:05 pm-5:50 am

1 stop8h 45m

$214

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/21

Showing 1-10 of 60 resultsSorted by cheapest first
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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, October is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $81). Flying from Seoul to Southeast Asia in December is currently the most expensive (average of $129). 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 March 23, 2026.

It’s optimal to fly from Seoul to Southeast Asia in the afternoon. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Seoul to Southeast Asia?

Use this chart to determine the cheapest time to fly round-trip from Seoul to Southeast Asia. Price data was last updated on March 14, 2026.

Travelers seeking maximum savings on their Seoul to Southeast Asia flight should consider departing on Monday afternoons when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 March 23, 2026.

The most flights from SEL to zzYJX are scheduled on a Wednesday (46 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (43 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 March 23, 2026.
Get a feel of what it's like to fly with Jin Air,Korean Air, andAsiana Airlines 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.
Jin Air
8.6
Very good
23 reviews

Food

7.8

Entertainment

7.6

Overall

8.6

Crew

9.2

Comfort

8.0

Boarding

8.9
Jin Air
8.6
Very good
23 reviews
Jin Air
8.6
Very good
23 reviews

Food

7.8

Entertainment

7.6

Overall

8.6

Crew

9.2

Comfort

8.0

Boarding

8.9
Korean Air
8.4
Very good
1,202 reviews
Jin Air
8.6
Very good
23 reviews

Food

7.8

Entertainment

7.6

Overall

8.6

Crew

9.2

Comfort

8.0

Boarding

8.9
Asiana Airlines
8.1
Very good
506 reviews
Jin Air
8.6
Very good
23 reviews

Food

7.8

Entertainment

7.6

Overall

8.6

Crew

9.2

Comfort

8.0

Boarding

8.9
Jeju Air
7.6
Good
36 reviews
Jin Air
8.6
Very good
23 reviews

Food

7.8

Entertainment

7.6

Overall

8.6

Crew

9.2

Comfort

8.0

Boarding

8.9
VietJet Air
5.6
Fair
163 reviews
Jin Air
8.6
Very good
23 reviews

Food

7.8

Entertainment

7.6

Overall

8.6

Crew

9.2

Comfort

8.0

Boarding

8.9

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 Jeju Air, T'way Air, and Shandong Airlines fly from Seoul to Southeast Asia in about 6h 05m. The time it takes to get you to your destination can typically vary by up to 6h 15m. The distance from Seoul to Southeast Asia is about 2276 mi. This flight may include one or multiple stops.

  • 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 Air Seoul ($44), Jin Air ($49), and Eastar Jet ($53).

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

    The most popular flight routes from Seoul to Southeast Asia are Seoul Gimpo Intl - Bangkok Suvarnabhumi, Incheon Intl - Bangkok Suvarnabhumi and Incheon Intl - Hanoi Noibai.

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

    Consider AIR PREMIA (96%), Kuwait Airways (96%) or Air Busan (92%) 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 $56. While the most popular route (Seoul Gimpo Intl - Bangkok Suvarnabhumi) can be booked for $255 on average, our data indicates $669 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, October is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $81). Flying from Seoul to Southeast Asia in December is currently the most expensive (average of $129). 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.

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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Eastar JetCheapest$62Average$262FlexibilityNo cancel feeOn-time86%
Thai Lion AirCheapest$75Average$265FlexibilityNo cancel feeOn-timeN/A
ScootCheapest$79Average$307FlexibilityNo cancel feeOn-timeN/A
Thai AirAsia XCheapest$89Average$205FlexibilityNo cancel feeOn-timeN/A
AIR PREMIACheapest$92Average$269FlexibilityNo cancel feeOn-timeN/A
Thai Vietjet AirCheapest$116Average$252FlexibilityNo cancel feeOn-timeN/A
Parata AirCheapest$122Average$243FlexibilityNo cancel feeOn-timeN/A
Philippines AirAsiaCheapest$129Average$204FlexibilityNo cancel feeOn-time53%
Air SeoulCheapest$129Average$166FlexibilityNo cancel feeOn-timeN/A
Air BusanCheapest$136Average$217FlexibilityNo cancel feeOn-time94%

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