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Cheap flights from Bangkok to Seoul

BKK — SEL
11 Nov — 18 Nov1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Bangkok to Seoul are usually found in March or February, booked 76 days in advance, depart on a Thursday or Friday and return on a Wednesday

Find flight deals from Bangkok to Seoul

Popular in

May

Cheapest in

March

Average price

฿11,346
Highest demand for flights based on searches. 6% potential increase in price (฿26,480 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (฿4,914 potential savings vs. average return price).
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Average for round-trip flights in October 2026
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Best time to book a flight from Bangkok to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Bangkok with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Bangkok to Seoul

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

The best time to book flights from Bangkok to Seoul is 80 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.

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

Currently, March is the cheapest month in which you can book a flight from Bangkok to Seoul (average of ฿8,066). Flying from Bangkok to Seoul in May is currently the most expensive (average of ฿12,183). 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 BKK to SEL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Bangkok to Seoul as you normally would.

Reviews of airlines servicing Seoul

Read reviews from past customers who have flown with Korean Air,AIR PREMIA, andThai Airways from Bangkok 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

Crew

8.7

Comfort

8.3

Food

8.1

Boarding

8.5

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
1,217 reviews
Korean Air
8.4
Very Good
1,217 reviews
Check prices

Crew

8.7

Comfort

8.3

Food

8.1

Boarding

8.5

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
1,217 reviews
Check prices

Crew

8.7

Comfort

8.3

Food

8.1

Boarding

8.5

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
427 reviews
Korean Air
8.4
Very Good
1,217 reviews
Check prices

Crew

8.7

Comfort

8.3

Food

8.1

Boarding

8.5

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
136 reviews
Korean Air
8.4
Very Good
1,217 reviews
Check prices

Crew

8.7

Comfort

8.3

Food

8.1

Boarding

8.5

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

  • What are the cheapest airlines flying from Bangkok to Seoul round-trip?

    Cheapflights users have booked flights from Bangkok to Seoul return from ฿4,612. Other airlines that can offer you cheap pricing are Thai AirAsia, from ฿4,908, and Thai AirAsia X, from ฿5,084. Thai Vietjet Air is currently priced 56% below the average price you’ll pay for this route.

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

    ฿2,178 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 (Formerly T'way Air), with prices starting from ฿3,096 and ฿3,636, respectively.

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

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

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Bangkok to Seoul on time: เคนย่าแอร์เวย์ (87%), Thai Vietjet Air (87%), คูเวตแอร์เวย์ (85%).

  • What are the cheapest flights from Bangkok to Seoul?

    Looking for the cheapest flight from Bangkok to Seoul? While on average our users pay ฿16,562, our data indicates the cheapest price to be ฿4,361. The most popular route (Bangkok Suvarnabhumi - Incheon Intl), is priced around ฿9,740.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Bangkok to Seoul (average of ฿8,066). Flying from Bangkok to Seoul in May is currently the most expensive (average of ฿12,183). 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 Bangkok to Seoul

Chiang Mai to Incheon Intl flights
Phuket City to Incheon Intl flights
Chiang Mai to Busan flights

Top 10 airlines flying from Bangkok to Seoul

AirlineCheapestAverageFlexibilityOn-time
Thai Vietjet AirCheapest฿4,612Average฿9,087FlexibilityNo cancel feeOn-timeN/A
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Thai AirAsiaCheapest฿4,908Average฿10,356FlexibilityNo cancel feeOn-time87%
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Thai AirAsia XCheapest฿5,084Average฿7,700FlexibilityNo cancel feeOn-timeN/A
Search Thai AirAsia X flights
Thai Lion AirCheapest฿5,731Average฿10,187FlexibilityNo cancel feeOn-timeN/A
Search Thai Lion Air flights
Vietnam AirlinesCheapest฿6,049Average฿8,365FlexibilityNo cancel feeOn-time81%
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Trinity Airways (Formerly T'way Air)Cheapest฿6,234Average฿11,305FlexibilityNo cancel feeOn-time88%
Search Trinity Airways (Formerly T'way Air) flights
AIR PREMIACheapest฿6,255Average฿12,851FlexibilityNo cancel feeOn-timeN/A
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Air BusanCheapest฿7,586Average฿9,966FlexibilityNo cancel feeOn-time94%
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Eastar JetCheapest฿7,715Average฿11,181FlexibilityNo cancel feeOn-time86%
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Jeju AirCheapest฿8,116Average฿10,755FlexibilityNo cancel feeOn-timeN/A
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