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Southeast Asia

$67+ 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — BKK
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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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 October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/227:50 pmICN - BKK
Nonstop6h 20mT'way Air
Wed 11/261:30 amBKK - ICN
Nonstop5h 30mT'way Air
Deal found 10/29$135
This Trip.com deal was found by Cheapflights users on 10/28. 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.
Sun 11/237:50 pmICN - BKK
Nonstop6h 20mT'way Air
Thu 11/271:30 amBKK - ICN
Nonstop5h 30mT'way Air
Deal found 10/28$141
This T'way Air deal was found by Cheapflights users on 10/29. 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.
Fri 11/287:50 pmICN - BKK
Nonstop6h 20mT'way Air
Tue 12/21:30 amBKK - ICN
Nonstop5h 30mT'way Air
Deal found 10/29$149
This T'way Air deal was found by Cheapflights users on 10/30. 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 11/247:50 pmICN - BKK
Nonstop6h 20mT'way Air
Thu 11/271:30 amBKK - ICN
Nonstop5h 30mT'way Air
Deal found 10/30$150
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 11/297:50 pmICN - BKK
Nonstop6h 20mT'way Air
Fri 12/51:30 amBKK - ICN
Nonstop5h 30mT'way Air
Deal found 10/30$151
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Thu 11/277:50 pmICN - BKK
Nonstop6h 20mT'way Air
Wed 12/31:30 amBKK - ICN
Nonstop5h 30mT'way Air
Deal found 10/30$152
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Wed 11/55:10 pmICN - BKK
Nonstop6h 00mJin Air
Sat 11/810:25 pmBKK - ICN
Nonstop5h 15mJin Air
Deal found 10/29$156
This Trip.com deal was found by Cheapflights users on 10/29. 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.
Wed 11/267:50 pmICN - BKK
Nonstop6h 20mT'way Air
Tue 12/21:30 amBKK - ICN
Nonstop5h 30mT'way Air
Deal found 10/29$158
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Thu 12/185:10 pmICN - BKK
Nonstop6h 00mJin Air
Mon 12/2210:25 pmBKK - ICN
Nonstop5h 15mJin Air
Deal found 10/30$159
This Booking.com deal was found by Cheapflights users on 10/30. 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 11/307:50 pmICN - BKK
Nonstop6h 20mT'way Air
Mon 12/81:30 amBKK - ICN
Nonstop5h 30mT'way Air
Deal found 10/30$161
This Jetabroad deal was found by Cheapflights users on 10/30. 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.
Sun 11/305:10 pmICN - BKK
Nonstop6h 00mJin Air
Mon 12/810:25 pmBKK - ICN
Nonstop5h 15mJin Air
Deal found 10/30$162
This Jetabroad deal was found by Cheapflights users on 10/29. 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.
Fri 11/145:10 pmICN - BKK
Nonstop6h 00mJin Air
Wed 11/1910:25 pmBKK - ICN
Nonstop5h 40mJin Air
Deal found 10/29$163

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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$134
(Kiwi.com)

One-way from

$67
(Kiwi.com)

Popular in

October

Cheapest in

June

Average price

$384
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. 12% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 30, 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

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Fri 11/28

7:50 pm-12:10 am

Nonstop6h 20m

Bangkok Suvarnabhumi

Wed 12/3

1:30 am-9:00 am

Nonstop5h 30m

$149

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Mon 11/24

7:50 pm-12:10 am

Nonstop6h 20m

Bangkok Suvarnabhumi

Thu 11/27

1:30 am-9:00 am

Nonstop5h 30m

$150

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 11/29

7:30 pm-11:45 pm

Nonstop6h 15m

Bangkok Suvarnabhumi

Sun 11/30

1:00 am-8:25 am

Nonstop5h 25m

$187

IncheonPhuket City

ICN - HKT

ICNHKT

Incheon Intl

Thu 12/4

7:35 am-3:10 pm

1 stop9h 35m

Phuket City

Mon 12/8

9:55 pm-10:05 am

1 stop10h 10m

$193

IncheonChiang Mai

ICN - CNX

ICNCNX

Incheon Intl

Mon 11/17

1:10 pm-9:50 pm

1 stop10h 40m

Chiang Mai

Mon 11/24

11:05 pm-11:40 am

1 stop10h 35m

$209

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Fri 11/28

5:10 pm-9:10 pm

Nonstop6h 00m

Bangkok Suvarnabhumi

Wed 12/3

10:25 pm-6:05 am

Nonstop5h 40m

$212

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Sat 12/6

5:15 pm-9:25 pm

Nonstop6h 10m

Bangkok Suvarnabhumi

Thu 12/11

10:55 pm-6:35 am

Nonstop5h 40m

$212

IncheonBangkok

ICN - BKK

ICNBKK

Incheon Intl

Fri 11/21

5:10 pm-9:10 pm

Nonstop6h 00m

Bangkok Suvarnabhumi

Tue 11/25

10:25 pm-6:05 am

Nonstop5h 40m

$212

SeoulBangkok

GMP - BKK

GMPBKK

Seoul Gimpo Intl

Tue 11/18

7:50 pm-11:40 pm

1 stop29h 50m

Bangkok Suvarnabhumi

Thu 11/27

12:40 am-8:25 am

1 stop29h 45m

$214

IncheonPhuket City

ICN - HKT

ICNHKT

Incheon Intl

Fri 11/28

11:20 am-8:10 pm

1 stop10h 50m

Phuket City

Tue 12/2

9:55 pm-11:30 am

1 stop11h 35m

$215

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 60 results
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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, June is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $102). Flying from Seoul to Southeast Asia in January is currently the most expensive (average of $161). 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 October 30, 2025.

It’s optimal to fly from Seoul to Southeast Asia in the morning. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight in the afternoon.

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 December 16, 2024.

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 afternoons 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 October 30, 2025.

The most flights from SEL to zzYJX are scheduled on a Wednesday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (37 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 October 30, 2025.
Get a feel of what it's like to fly with Korean Air, Asiana Airlines, and Jeju 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
1,155 reviews

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

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
1,155 reviews
Korean Air
8.4
Very good
1,155 reviews

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

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
484 reviews
Korean Air
8.4
Very good
1,155 reviews

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

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
7.7
Good
34 reviews
Korean Air
8.4
Very good
1,155 reviews

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

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!!
Philippine Airlines
7.3
Good
930 reviews
Korean Air
8.4
Very good
1,155 reviews

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

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
152 reviews
Korean Air
8.4
Very good
1,155 reviews

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

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 T'way Air, Jeju Air, and Air China fly from Seoul to Southeast Asia in about 6h 15m. The time it takes to get you to your destination can typically vary by up to 4h 25m. 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 T'way Air ($72), Jeju Air ($94), and China Eastern ($98).

  • 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 - Hanoi Noibai.

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

    Consider Oman Air (99%), T'way Air (97%) or Turkish Airlines (97%) 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 $58. While the most popular route (Incheon Intl - Bangkok Suvarnabhumi) can be booked for $163 on average, our data indicates $738 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, June is the cheapest month in which you can book a flight from Seoul to Southeast Asia (average of $102). Flying from Seoul to Southeast Asia in January is currently the most expensive (average of $161). 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

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Alternative routes for Seoul to Southeast Asia

See prices for flight routes from nearby airports that may be better suited for you.
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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Eastar JetCheapest$60Average$262FlexibilityNo cancel feeOn-time86%
ScootCheapest$79Average$307FlexibilityNo cancel feeOn-timeN/A
AIR PREMIACheapest$108Average$285FlexibilityNo cancel feeOn-timeN/A
AirAsiaCheapest$115Average$253FlexibilityNo cancel feeOn-time66%
Thai Vietjet AirCheapest$124Average$234FlexibilityNo cancel feeOn-timeN/A
Air SeoulCheapest$129Average$177FlexibilityNo cancel feeOn-timeN/A
Philippines AirAsiaCheapest$130Average$212FlexibilityNo cancel feeOn-time53%
Cebu PacificCheapest$130Average$270FlexibilityNo cancel feeOn-time64%
Vietnam AirlinesCheapest$142Average$256FlexibilityNo cancel feeOn-time81%
Thai AirAsia XCheapest$158Average$255FlexibilityNo cancel feeOn-timeN/A

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