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Cheap flights from Thailand to Seoul from ฿3,431

BKK — SEL
18 Oct — 25 Oct1
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

Thu 1/1023:00 -
Nonstop5h 30m
Wed 7/1018:10 -
Nonstop5h 50m
Deal found 17/9฿6,829
Thu 1/1023:55 -
Nonstop5h 15m
Wed 7/1018:10 -
Nonstop5h 50m
Deal found 17/9฿6,862
Wed 30/900:50 -
Nonstop5h 25m
Fri 9/1018:10 -
Nonstop5h 50m
Deal found 14/9฿7,162
Thu 1/1000:50 -
Nonstop5h 25m
Tue 6/1018:10 -
Nonstop5h 50m
Deal found 18/9฿7,362
Mon 21/902:25 -
Nonstop5h 35m
Tue 29/918:00 -
Nonstop6h 05m
Deal found 12/9฿7,462
Wed 30/900:45 -
Nonstop5h 40m
Fri 9/1019:55 -
Nonstop5h 50m
Deal found 15/9฿7,495
Thu 1/1023:00 -
Nonstop5h 30m
Mon 5/1018:10 -
Nonstop5h 50m
Deal found 17/9฿7,495
Sat 19/901:10 -
Nonstop5h 45m
Mon 5/1018:00 -
Nonstop6h 05m
Deal found 16/9฿7,528
Wed 30/902:25 -
Nonstop5h 35m
Sat 10/1020:05 -
Nonstop6h 05m
Deal found 14/9฿7,562
Wed 23/923:55 -
Nonstop5h 15m
Sun 27/918:30 -
Nonstop6h 00m
Deal found 16/9฿7,595
Wed 30/902:25 -
Nonstop5h 35m
Tue 6/1020:05 -
Nonstop6h 05m
Deal found 14/9฿7,628
Thu 1/1000:05 -
Nonstop5h 35m
Mon 5/1020:05 -
Nonstop6h 05m
Deal found 13/9฿7,662

Find flight deals from Thailand to Seoul

Round-trip from

฿6,829

One-way from

฿3,431

Popular in

May

Cheapest in

March

Average price

฿10,693

Good round-trip deal

฿8,616 or less

Good one-way deal

฿8,377 or less
Jeju Air
  • Jeju Air
  • 1/10-7/10
  • Nonstop
  • 11h 20m total
  • Thailand to Seoul
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Air Busan
  • Air Busan
  • 7/10-31/12
  • Nonstop
  • 5h 25m total
  • Thailand to Seoul
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (฿31,607 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (฿5,203 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
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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).
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Cheapflights Fare Finder

 
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

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Thu 24/9

23:55-07:10

Nonstop5h 15m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿3,864

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Fri 25/9

23:00-06:30

Nonstop5h 30m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿3,864

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Sat 3/10

23:55-07:10

Nonstop5h 15m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿3,964

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Wed 7/10

23:00-06:30

Nonstop5h 30m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,497

BangkokIncheon

BKK Bangkok Suvarnabhumi - ICN Incheon Intl

BKKICN

Bangkok Suvarnabhumi

Mon 5/10

00:05-07:40

Nonstop5h 35m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,697

BangkokIncheon

BKK Bangkok Suvarnabhumi - ICN Incheon Intl

BKKICN

Bangkok Suvarnabhumi

Fri 11/12

22:25-06:20

Nonstop5h 55m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,697

BangkokIncheon

BKK Bangkok Suvarnabhumi - ICN Incheon Intl

BKKICN

Bangkok Suvarnabhumi

Wed 30/9

14:35-06:05

1 stop13h 30m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,730

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Sun 8/11

22:15-05:30

Nonstop5h 15m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,830
Fastest return journey

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Tue 1/12

22:20-05:30

Nonstop5h 10m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,897

Chiang MaiIncheon

CNX Chiang Mai - ICN Incheon Intl

CNXICN

Chiang Mai

Sat 14/11

22:20-05:30

Nonstop5h 10m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,930

Flights are sorted by cheapest return flights first.

Deals found on 17/9

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

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, November is the cheapest month in which you can book a flight from Thailand to Seoul (average of ฿8,295). Flying from Thailand to Seoul in May is currently the most expensive (average of ฿11,925). 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?

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

The most flights from TH0 to SEL are scheduled on a Wednesday (45 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (35 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 74 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

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
1,218 reviews
Check prices

Boarding

8.5

Food

8.1

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

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
1,218 reviews
Korean Air
8.4
Very Good
1,218 reviews
Check prices

Boarding

8.5

Food

8.1

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

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
8.1
Very Good
Korean Air
8.4
Very Good
1,218 reviews
Check prices

Boarding

8.5

Food

8.1

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

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
420 reviews
Korean Air
8.4
Very Good
1,218 reviews
Check prices

Boarding

8.5

Food

8.1

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

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
6.7
Okay
134 reviews
Korean Air
8.4
Very Good
1,218 reviews
Check prices

Boarding

8.5

Food

8.1

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

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

  • How long is the flight from Thailand to Seoul?

    Departing from Thailand to Seoul will take you 6h 20m. There are 4316 km between Thailand and Seoul. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    ฿2,168 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 Trinity Airways, with prices starting from ฿3,081 and ฿3,619, 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 AIR PREMIA(89%), Thai Vietjet Air(88%) or เคนย่าแอร์เวย์(85%), 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 ฿5,127. On average you can expect to pay ฿27,186. The most popular route, (Bangkok Suvarnabhumi - Incheon Intl), can usually be booked for ฿8,028.

  • 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, November is the cheapest month in which you can book a flight from Thailand to Seoul (average of ฿8,295). Flying from Thailand to Seoul in May is currently the most expensive (average of ฿11,925). 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

Alternative routes for Thailand to Seoul

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

AirlineCheapestAverageFlexibilityOn-time
Jeju AirCheapest฿2,912Average฿8,791FlexibilityNo cancel feeOn-timeN/A
Search Jeju Air flights
Thai Vietjet AirCheapest฿4,590Average฿9,041FlexibilityNo cancel feeOn-timeN/A
Search Thai Vietjet Air flights
Thai AirAsiaCheapest฿4,885Average฿10,308FlexibilityNo cancel feeOn-time87%
Search Thai AirAsia flights
Thai AirAsia XCheapest฿5,060Average฿7,736FlexibilityNo cancel feeOn-timeN/A
Search Thai AirAsia X flights
Trinity AirwaysCheapest฿5,642Average฿11,154FlexibilityNo cancel feeOn-time88%
Search Trinity Airways flights
Thai Lion AirCheapest฿5,704Average฿10,139FlexibilityNo cancel feeOn-timeN/A
Search Thai Lion Air flights
Eastar JetCheapest฿5,842Average฿11,027FlexibilityNo cancel feeOn-time86%
Search Eastar Jet flights
Vietnam AirlinesCheapest฿6,020Average฿8,326FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
AIR PREMIACheapest฿7,156Average฿12,982FlexibilityNo cancel feeOn-timeN/A
Search AIR PREMIA flights
Air BusanCheapest฿7,550Average฿9,680FlexibilityNo cancel feeOn-time94%
Search Air Busan flights

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

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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.

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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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