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Cheap flights from Seoul to Bangkok from ฿3,037

SEL — BKK
28 Sep — 5 Oct1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seoul to Bangkok are usually found in September or March, booked 47 days in advance, depart on a Thursday or Wednesday and return on a Friday

Cheap flight deals from Seoul to Bangkok

Enter your travel dates to find the best prices.

Cheapest flights from Seoul to Bangkok

Wed 2/918:00 -
Nonstop6h 05m
Tue 8/900:05 -
Nonstop5h 35m
Deal found 27/8฿6,371
Thu 3/920:05 -
Nonstop6h 05m
Tue 8/901:10 -
Nonstop5h 45m
Deal found 27/8฿6,404
Sat 26/920:05 -
Nonstop6h 05m
Mon 28/901:10 -
Nonstop5h 45m
Deal found 27/8฿6,437
Fri 4/918:00 -
Nonstop6h 05m
Fri 11/900:05 -
Nonstop5h 35m
Deal found 27/8฿6,470
Tue 15/918:00 -
Nonstop6h 05m
Sat 19/902:25 -
Nonstop5h 35m
Deal found 28/8฿6,503
Thu 10/917:15 -
Nonstop5h 55m
Thu 1/1022:45 -
Nonstop5h 30m
Deal found 28/8฿6,536
Sun 6/917:15 -
Nonstop5h 55m
Thu 10/922:45 -
Nonstop5h 30m
Deal found 28/8฿6,569
Thu 10/918:00 -
Nonstop6h 05m
Tue 15/900:05 -
Nonstop5h 35m
Deal found 27/8฿6,602
Sat 26/918:00 -
Nonstop6h 05m
Wed 30/900:05 -
Nonstop5h 35m
Deal found 28/8฿6,635
Thu 10/918:00 -
Nonstop6h 05m
Sat 12/900:05 -
Nonstop5h 35m
Deal found 26/8฿6,668
Sun 30/820:05 -
Nonstop6h 05m
Thu 17/901:10 -
Nonstop5h 45m
Deal found 27/8฿6,701
Fri 28/820:05 -
Nonstop6h 05m
Sat 5/901:10 -
Nonstop5h 45m
Deal found 27/8฿6,734

Find flight deals from Seoul to Bangkok

Round-trip from

฿6,404

One-way from

฿3,037

Popular in

July

Cheapest in

September

Average price

฿8,946
Thai Vietjet Air
  • Thai Vietjet Air
  • 10/9-19/9
  • Nonstop
  • 11h 40m total
  • Seoul to Bangkok
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Jeju Air
  • Jeju Air
  • 9/9
  • 1 total stop
  • 29h 55m total
  • Seoul to Bangkok
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (฿42,187 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (฿6,239 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seoul to Bangkok that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Sun 13/9

17:15-21:10

Nonstop5h 55m

Bangkok Suvarnabhumi

Thu 17/9

22:45-06:15

Nonstop5h 30m

฿6,536

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Mon 7/9

20:05-00:10

Nonstop6h 05m

Bangkok Suvarnabhumi

Thu 10/9

01:10-08:55

Nonstop5h 45m

฿6,899

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Fri 11/9

17:15-21:10

Nonstop5h 55m

Bangkok Suvarnabhumi

Tue 15/9

22:45-06:15

Nonstop5h 30m

฿6,899

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Thu 17/9

20:05-00:10

Nonstop6h 05m

Bangkok Suvarnabhumi

Sun 20/9

01:10-08:55

Nonstop5h 45m

฿6,932

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Wed 30/9

18:00-22:05

Nonstop6h 05m

Bangkok Suvarnabhumi

Tue 6/10

00:05-07:40

Nonstop5h 35m

฿6,998

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Tue 27/10

19:50-00:10

Nonstop6h 20m

Bangkok Suvarnabhumi

Fri 30/10

01:30-09:00

Nonstop5h 30m

฿7,130

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Sun 13/9

18:00-22:05

Nonstop6h 05m

Bangkok Suvarnabhumi

Wed 16/9

00:05-07:40

Nonstop5h 35m

฿7,427

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Sun 27/9

18:00-22:05

Nonstop6h 05m

Bangkok Suvarnabhumi

Mon 28/9

00:05-07:40

Nonstop5h 35m

฿7,460

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Sun 27/9

17:15-21:10

Nonstop5h 55m

Bangkok Suvarnabhumi

Mon 5/10

22:45-06:15

Nonstop5h 30m

฿8,219

IncheonBangkok

ICN Incheon Intl - BKK Bangkok Suvarnabhumi

ICNBKK

Incheon Intl

Thu 10/9

10:35-18:30

1 stop9h 55m

Bangkok Suvarnabhumi

Mon 14/9

19:30-16:25

1 stop18h 55m

฿9,210

Flights are sorted by cheapest return flights first.

Deals found on 28/8

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

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

Cheapflights Insights

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

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

Currently, September is the cheapest month in which you can book a flight from Seoul to Bangkok (average of ฿6,140). Flying from Seoul to Bangkok in July is currently the most expensive (average of ฿11,157). 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 BKK?

A simple way to save on the total cost of your ticket is to fly from Seoul to Bangkok at midday. If you’re flexible enough to do this you can expect to save up to 66% on your trip compared to booking a flight in the morning.

Weekly flight availability from Seoul to Bangkok

The most flights from SEL to TH1 are scheduled on a Friday (46 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (36 on average).

How much does it cost for a return flight from Seoul to Bangkok?

Airfare is typical for this route at the moment.
Seoul to Bangkok flights typically cost between ฿4,852 and ฿8,120 in September.
The cheapest return price found within the last 5 days was ฿6,404 on Multiple Airlines (10 Sep–19 Sep).

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

To ensure you get the cheapest price possible for a flight from Seoul to Bangkok, you should look to book at least 37 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Bangkok

Read through reviews of airlines operating flights from Seoul to Bangkok, such as Thai Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Thai Airways
7.9
Good
417 reviews
Check prices

Entertainment

6.9

Overall

7.9

Boarding

8.0

Food

7.5

Comfort

7.7

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing
Thai Airways
7.9
Good
417 reviews
Thai Airways
7.9
Good
417 reviews
Check prices

Entertainment

6.9

Overall

7.9

Boarding

8.0

Food

7.5

Comfort

7.7

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing

Related info for your journey

  • How long is the flight from Seoul to Bangkok?

    There are many flights that can get you from Seoul to Bangkok in 5h 55m. Fly via AIR PREMIA, Jeju Air, or T'way Air to get the fastest option. There are 3663 km between Seoul and Bangkok. Most flights are nonstop.

  • What is the cheapest airline to fly from Seoul to Bangkok round-trip?

    Flying on Thai Airways is currently your cheapest option to Bangkok, with prices starting at ฿11,241.

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

    The cheapet airlines for a one-way flight from Seoul to Bangkok are Jeju Air (฿1,775), T'way Air (฿2,005), and Thai AirAsia X (฿2,014).

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

    The most popular flight routes from Seoul to Bangkok are Incheon Intl - Bangkok Suvarnabhumi, Seoul Gimpo Intl - Bangkok Suvarnabhumi and Incheon Intl - Bangkok Don Mueang Intl.

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

    Consider AIR PREMIA (100%), คูเวตแอร์เวย์ (98%) or EL AL (95%) when booking your flight. These represent the most reliable airlines when flying from Seoul to Bangkok.

  • What are the cheapest flights from Seoul to Bangkok?

    Looking for the cheapest flight from Seoul to Bangkok? While on average our users pay ฿8,098, our data indicates the cheapest price to be ฿2,592. The most popular route (Incheon Intl - Bangkok Suvarnabhumi), is priced around ฿5,810.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Seoul to Bangkok (average of ฿6,140). Flying from Seoul to Bangkok in July is currently the most expensive (average of ฿11,157). 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 Seoul to Bangkok

Incheon Intl to Suvarnabhumi flights
Busan to Suvarnabhumi flights
Busan to Chiang Mai flights
Daegu to Suvarnabhumi flights
Busan to Krabi flights

Top airline flying from Seoul to Bangkok

AirlineCheapestAverageFlexibilityOn-time
Thai AirwaysCheapest฿11,241Average฿11,954FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

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Certainly. Search results for flights to Bangkok from Seoul shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Bangkok from Seoul today and book when prices fit your budget.

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