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Cheap flights from Thailand to Seoul from ฿4,210

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 15/7. Fares are subject to change and may not be available on all flights or dates of travel.
BKK — SEL
20 Jun — 27 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Thailand to Seoul

Enter your travel dates to find the best prices.

Cheapest flights from Thailand to Seoul
Explore the most affordable flight options available from Thailand to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 May 2026.

Sun 12/723:00
CNX
-
ICN
Nonstop5h 30m
Jeju Air
Sat 18/718:10
ICN
-
CNX
Nonstop5h 50m
Jeju Air
Deal found 21/5฿8,029
Wed 15/723:00
CNX
-
ICN
Nonstop5h 30m
Jeju Air
Sun 19/718:10
ICN
-
CNX
Nonstop5h 50m
Jeju Air
Deal found 20/5฿8,062
Thu 28/523:00
CNX
-
ICN
Nonstop5h 30m
Jeju Air
Thu 4/618:10
ICN
-
CNX
Nonstop5h 50m
Jeju Air
Deal found 18/5฿8,780
Sun 31/523:00
CNX
-
ICN
Nonstop5h 30m
Jeju Air
Thu 4/618:10
ICN
-
CNX
Nonstop5h 50m
Jeju Air
Deal found 17/5฿8,812
Sun 24/523:00
CNX
-
ICN
Nonstop5h 30m
Jeju Air
Thu 28/518:10
ICN
-
CNX
Nonstop5h 50m
Jeju Air
Deal found 18/5฿8,910
Wed 15/723:00
CNX
-
ICN
Nonstop5h 30m
Jeju Air
Wed 22/718:10
ICN
-
CNX
Nonstop5h 50m
Jeju Air
Deal found 20/5฿9,041
Mon 20/723:00
CNX
-
ICN
Nonstop5h 30m
Jeju Air
Mon 27/718:10
ICN
-
CNX
Nonstop5h 50m
Jeju Air
Deal found 21/5฿9,106
Sat 30/523:55
CNX
-
ICN
Nonstop5h 15m
Multiple Airlines
Thu 4/618:10
ICN
-
CNX
Nonstop5h 50m
Multiple Airlines
Deal found 20/5฿9,726
Sat 23/502:25
BKK
-
ICN
Nonstop5h 35m
Multiple Airlines
Sat 30/523:40
ICN
-
BKK
1 stop27h 45m
Multiple Airlines
Deal found 21/5฿9,792
Wed 19/806:35
CNX
-
ICN
1 stop24h 20m
Multiple Airlines
Sun 23/818:10
ICN
-
CNX
Nonstop5h 50m
Multiple Airlines
Deal found 21/5฿9,955
Thu 25/616:50
BKK
-
ICN
2 stops20h 05m
Multiple Airlines
Sat 4/720:05
ICN
-
BKK
Nonstop6h 05m
Multiple Airlines
Deal found 21/5฿10,020
Sun 5/723:00
CNX
-
ICN
Nonstop5h 30m
Multiple Airlines
Sun 12/719:55
ICN
-
CNX
Nonstop5h 55m
Multiple Airlines
Deal found 21/5฿10,053

Find flight deals from Thailand to Seoul

Keep the following information in mind while searching for Thailand to Seoul flight deals. Data was last updated 21 May 2026.

Round-trip from

฿8,029

One-way from

฿4,210

Popular in

December

Cheapest in

September

Average price

฿10,412

Good round-trip deal

฿9,921 or less

Good one-way deal

฿5,066 or less
Jeju Air
  • Jeju Air
  • 12/7-18/7
  • Nonstop
  • 11h 20m total
  • Thailand to Seoul
Search Deals
Jeju Air
  • Jeju Air
  • 15/7
  • Nonstop
  • 5h 30m total
  • Thailand to Seoul
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (฿29,448 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿7,270 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Thailand to Seoul (SEL).
Search Deals
Price to beat on a one-way flight from Thailand to Seoul (SEL).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Thailand to Seoul 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 17,341 searches. Data last updated 21 May 2026.
Use the filters below to find and compare flights from Thailand to Seoul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Thu 4/6

16:50-14:55

2 stops20h 05m

Incheon Intl

Wed 1/7

13:30-00:50

1 stop13h 20m

฿10,412
Fastest return journey

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Mon 1/6

21:45-05:05

Nonstop5h 20m

Incheon Intl

Thu 4/6

17:20-20:45

Nonstop5h 25m

฿10,477

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Wed 3/6

00:05-07:40

Nonstop5h 35m

Incheon Intl

Wed 1/7

18:00-22:05

Nonstop6h 05m

฿10,771

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Thu 18/6

02:25-10:00

Nonstop5h 35m

Incheon Intl

Fri 26/6

12:15-01:50

1 stop15h 35m

฿11,456

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Mon 8/6

11:50-14:55

2 stops25h 05m

Incheon Intl

Sun 14/6

08:30-22:15

3 stops15h 45m

฿11,554

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Tue 30/6

21:45-05:05

Nonstop5h 20m

Incheon Intl

Tue 7/7

17:20-20:45

Nonstop5h 25m

฿11,750

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Fri 19/6

22:45-06:15

Nonstop5h 30m

Incheon Intl

Tue 30/6

17:15-21:10

Nonstop5h 55m

฿12,044

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Thu 11/6

15:55-10:55

2 stops17h 00m

Incheon Intl

Tue 16/6

07:45-14:55

1 stop9h 10m

฿12,272

Chiang MaiIncheon

CNX - ICN

CNXICN

Chiang Mai

Mon 20/7

23:00-06:30

Nonstop5h 30m

Incheon Intl

Mon 27/7

15:55-13:25

2 stops23h 30m

฿12,272

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Thu 2/7

02:10-13:30

1 stop9h 20m

Incheon Intl

Mon 6/7

07:45-01:25

1 stop19h 40m

฿12,435

Flights are sorted by cheapest return flights first.

Deals found on 21/5

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Thailand to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Thailand 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 Thailand to Seoul

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

Currently, September is the cheapest month in which you can book a flight from Thailand to Seoul (average of ฿1,632). Flying from Thailand to Seoul in November is currently the most expensive (average of ฿19,550). 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 TH to SEL?

Find hourly flight availability from Thailand to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 May 2026.

When flying from Thailand to Seoul, 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 Thailand to Seoul

Explore weekly flight availability from Thailand to Seoul. 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 21 May 2026.

The most flights from TH0 to SEL are scheduled on a Thursday (30 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (25 on average).

How far ahead should I book a flight from Thailand to Seoul?

The best time to book flights from Thailand to Seoul is 62 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated 21 May 2026.
Read reviews from past customers who have flown with Korean Air,AIR PREMIA, andThai Airways from Thailand to Seoul. 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
1,217 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very Good
1,217 reviews
Korean Air
8.4
Very Good
1,217 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
AIR PREMIA
8.0
Very Good
Korean Air
8.4
Very Good
1,217 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Thai Airways
7.9
Good
400 reviews
Korean Air
8.4
Very Good
1,217 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Thai Vietjet Air
6.6
Okay
124 reviews
Korean Air
8.4
Very Good
1,217 reviews
Check prices

Entertainment

8.2

Comfort

8.3

Overall

8.4

Crew

8.7

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Thailand to Seoul. 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 Thailand to Seoul?

    Departing from Thailand to Seoul will take you 5h 20m. There are 3378 km between Thailand and Seoul. Most flights are nonstop.

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

    ฿2,124 is the cheapest one-way deal found within the past few days, from Thai Vietjet Air. You may also be able to find cheap deals on Thai AirAsia X and T'way Air, with prices starting from ฿2,897 and ฿3,546, respectively.

  • What are the most popular routes from Thailand to Seoul?

    While some choose either Bangkok Don Mueang Intl - Incheon Intl or Bangkok Suvarnabhumi - Seoul Gimpo Intl, Bangkok Suvarnabhumi - Incheon Intl is the most popular route from Thailand to Seoul.

  • What are the most reliable airlines from Thailand to Seoul?

    No one likes to see their flight delayed. When booking a flight from Thailand to Seoul consider choosing EL AL(97%), ฮาวายเอี้ยนแอร์ไลน์(96%) or เคนย่าแอร์เวย์(95%), as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Thailand to Seoul?

    The cheapest flight price from Thailand to Seoul is ฿5,555. On average you can expect to pay ฿26,788. The most popular route, (Bangkok Suvarnabhumi - Incheon Intl), can usually be booked for ฿7,899.

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

    Yes. In addition to deals on Thailand to Seoul flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Thailand to Seoul?

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

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

    Yes. Cheapflights offers flight deals from Thailand to Seoul 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 Thailand to Seoul?

    Currently, September is the cheapest month in which you can book a flight from Thailand to Seoul (average of ฿1,632). Flying from Thailand to Seoul in November is currently the most expensive (average of ฿19,550). 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 Thailand to Seoul

See prices for flight routes from nearby airports that may be better suited for you.
Chiang Mai to Incheon Intl flights
Phuket City to Incheon Intl flights
Chiang Mai to Busan flights

Top 10 airlines flying from Thailand to Seoul

Discover the top 10 airlines that operate flights from Thailand to Seoul. 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 17,341 searches. Data last updated 21 May 2026.
AirlineCheapestAverageFlexibilityOn-time
T'way AirCheapest฿2,176Average฿8,149FlexibilityNo cancel feeOn-time88%
Search T'way Air flights
Vietnam AirlinesCheapest฿2,669Average฿9,144FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Jeju AirCheapest฿2,854Average฿8,817FlexibilityNo cancel feeOn-timeN/A
Search Jeju Air flights
Eastar JetCheapest฿3,268Average฿10,593FlexibilityNo cancel feeOn-time86%
Search Eastar Jet flights
Thai AirAsia XCheapest฿3,546Average฿7,452FlexibilityNo cancel feeOn-timeN/A
Search Thai AirAsia X flights
Thai Vietjet AirCheapest฿3,689Average฿7,715FlexibilityNo cancel feeOn-timeN/A
Search Thai Vietjet Air flights
AIR PREMIACheapest฿5,584Average฿11,492FlexibilityNo cancel feeOn-timeN/A
Search AIR PREMIA flights
Thai Lion AirCheapest฿5,588Average฿9,726FlexibilityNo cancel feeOn-timeN/A
Search Thai Lion Air flights
Asiana AirlinesCheapest฿6,112Average฿13,551FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Korean AirCheapest฿6,232Average฿17,393FlexibilityNo cancel feeOn-time81%
Search Korean Air flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Thailand to Seoul?

Cheapflights helps you search for flights from Thailand to Seoul via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Thailand to Seoul?

Cheapflights simply makes it quick and affordable to book flights from Thailand to Seoul by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Thailand to Seoul with no change fees?

Yes! Cheapflights helps users easily find flights from Thailand to Seoul with no change fees.

Can Cheapflights notify me if prices for flights from Thailand to Seoul become cheaper?

Not ready to book yet? You can track prices for flights from Thailand to Seoul on Cheapflights with our Price Alert feature and get notified when better prices are available.

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