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฿4,635+ Cheap flights to Seoul

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 26/4. Fares are subject to change and may not be available on all flights or dates of travel.
— SEL
17 Mai — 24 Mai1
1 adult
1 adult, Economy, 0 bags

Flights to Seoul in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Seoul
Explore the most affordable flight options available to Seoul. Find the lowest fares based on data from user searches, with prices last updated on 17 April 2026.

Do 11/601:10
BKK
-
ICN
Nonstop5h 45m
Multiple Airlines
Fr 12/617:15
ICN
-
BKK
Nonstop5h 55m
Multiple Airlines
Deal found 13/4฿7,321
Do 4/601:10
BKK
-
ICN
Nonstop5h 45m
Multiple Airlines
So 14/608:15
ICN
-
BKK
2 stops14h 50m
Multiple Airlines
Deal found 12/4฿7,480
Do 11/601:10
BKK
-
ICN
Nonstop5h 45m
Multiple Airlines
So 28/617:15
ICN
-
BKK
Nonstop5h 55m
Multiple Airlines
Deal found 15/4฿7,704
Do 11/601:10
BKK
-
ICN
Nonstop5h 45m
Multiple Airlines
Di 16/617:15
ICN
-
BKK
Nonstop5h 55m
Multiple Airlines
Deal found 12/4฿7,736
Do 4/601:10
BKK
-
ICN
Nonstop5h 45m
Multiple Airlines
Do 11/616:45
ICN
-
BKK
1 stop11h 05m
Multiple Airlines
Deal found 14/4฿7,768
So 19/400:50
BKK
-
GMP
1 stop11h 55m
Multiple Airlines
Mi 6/514:20
GMP
-
BKK
1 stop9h 25m
Multiple Airlines
Deal found 15/4฿7,768
Do 2/701:10
BKK
-
ICN
Nonstop5h 45m
Multiple Airlines
Mo 13/719:55
ICN
-
BKK
Nonstop5h 50m
Multiple Airlines
Deal found 13/4฿7,896
Di 25/802:45
DMK
-
ICN
Nonstop5h 50m
Thai AirAsia
Sa 29/812:05
ICN
-
DMK
Nonstop5h 45m
Thai AirAsia
Deal found 13/4฿8,024
Do 11/601:10
BKK
-
ICN
Nonstop5h 45m
Multiple Airlines
Do 3/918:00
ICN
-
BKK
Nonstop6h 05m
Multiple Airlines
Deal found 15/4฿8,024
Mi 20/500:50
BKK
-
GMP
1 stop29h 25m
Multiple Airlines
Mi 17/606:15
GMP
-
BKK
2 stops18h 25m
Multiple Airlines
Deal found 14/4฿8,024
Di 25/802:45
DMK
-
ICN
Nonstop5h 50m
Thai AirAsia
Mo 31/812:05
ICN
-
DMK
Nonstop5h 45m
Thai AirAsia
Deal found 13/4฿8,088
So 31/500:50
BKK
-
ICN
2 stops14h 20m
Multiple Airlines
Mo 8/617:15
ICN
-
BKK
Nonstop5h 55m
Multiple Airlines
Deal found 16/4฿8,088

Find flight deals to Seoul

Find the latest flights to Seoul in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 17 April 2026.

Return from

฿7,321

One-way from

฿4,635

Popular in

December

Cheapest in

September

Average price

฿10,549
AIR PREMIA
  • AIR PREMIA
  • 11/6-12/6
  • Nonstop
  • 11h 40m total
  • Bangkok to Seoul
Search Deals
China Eastern
  • China Eastern
  • 26/4
  • 2 total stops
  • 13h 30m total
  • Bangkok to Seoul
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (฿1,086 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿238 potential savings vs. average return price).
Search Deals
Average for return flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Seoul that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 17,341 searches and data was last updated on 17 April 2026.
Use the filters below to find and compare flights to Seoul that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

So 10/5

22:45-06:15

Nonstop5h 30m

Incheon Intl

So 17/5

17:15-21:10

Nonstop5h 55m

฿10,038

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Mo 27/4

22:45-06:15

Nonstop5h 30m

Incheon Intl

So 10/5

17:15-21:10

Nonstop5h 55m

฿10,038

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Mo 8/6

19:30-16:25

1 stop18h 55m

Incheon Intl

Fr 19/6

10:35-20:05

1 stop11h 30m

฿10,613

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Fr 22/5

22:45-06:15

Nonstop5h 30m

Incheon Intl

Mo 25/5

17:15-21:10

Nonstop5h 55m

฿10,933

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Fr 2/10

19:05-05:50

1 stop8h 45m

Incheon Intl

Sa 10/10

11:05-17:05

1 stop8h 00m

฿10,997

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Mo 18/5

15:55-10:55

2 stops17h 00m

Incheon Intl

Mo 1/6

15:55-14:55

2 stops25h 00m

฿11,029

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Sa 30/5

20:50-22:45

1 stop23h 55m

Incheon Intl

Sa 6/6

07:45-14:55

1 stop9h 10m

฿11,093

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Mi 27/5

07:50-22:45

1 stop12h 55m

Incheon Intl

Fr 5/6

13:10-00:40

2 stops13h 30m

฿11,349

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Do 21/5

22:45-06:15

Nonstop5h 30m

Incheon Intl

Di 26/5

17:15-21:10

Nonstop5h 55m

฿11,413

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Do 4/6

14:25-06:40

1 stop14h 15m

Incheon Intl

Mo 8/6

10:35-13:10

1 stop28h 35m

฿11,476

Flights are sorted by cheapest return flights first.

Deals found on 14/4

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

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

When is the best time to book a flight to Seoul?

Use this chart to determine the optimal time to book a return flight from Bangkok to Seoul. Price data was last updated on 10 April 2026.

The price you pay for your flight to Seoul may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

How long is the flight to Seoul?

On average, a flight from Bangkok to Seoul takes 8 hours 15 minutes. Flights to Seoul from other popular cities in Thailand will vary in length. Below are a few examples of popular routes and their flight times.

Weekly flight availability to Seoul

The most flights from Bangkok to Seoul are scheduled on a Thursday (34 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (31 on average).

What are the most popular airlines that fly to Seoul?

The most popular airlines flying from Bangkok to Seoul are Thai AirAsia X, Thai Vietjet Air and Thai Airways.

Thai AirAsia X
Thai AirAsia X
From ฿3,473
Thai Vietjet Air
Thai Vietjet Air
From ฿3,613
Thai Airways
Thai Airways
From ฿8,187
Korean Air
Korean Air
From ฿6,104

What are the cheapest airlines that fly to Seoul?

The cheapest airlines flying from Bangkok to Seoul are T'way Air, Vietnam Airlines and Jeju Air.

Rainfall in Seoul by month

Plan your trip to Seoul by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seoul ranges from 27.0 - 253.0 mm per month. July is typically the wettest month, when rainfall can reach 253.0 mm. December is typically the driest time to visit Seoul when rainfall is around 27.0 mm.

Temperature in Seoul by month

Plan your trip to Seoul by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seoul, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

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 17 April 2026.
Check out reviews from past customers who have flown Korean Air,AIR PREMIA, andThai Airways to South Korea to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,208 reviews
Check prices

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Food

8.1

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
1,208 reviews
Korean Air
8.4
Very Good
1,208 reviews
Check prices

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Food

8.1

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
8.2
Very Good
Korean Air
8.4
Very Good
1,208 reviews
Check prices

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Food

8.1

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
7.8
Good
397 reviews
Korean Air
8.4
Very Good
1,208 reviews
Check prices

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Food

8.1

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
123 reviews
Korean Air
8.4
Very Good
1,208 reviews
Check prices

Overall

8.4

Crew

8.7

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Food

8.1

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.

FAQs about flying to Seoul

  • Can I find cheaper flights to Seoul if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Seoul on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Seoul?

    Based on reviews from Cheapflights users, T'way Air is rated the highest out of the airlines that fly to Seoul.

  • What is the cheapest airport to fly to in Seoul?

    Seoul Gimpo Intl is currently the cheapest airport to fly to in Seoul. One-way flights to Seoul Gimpo Intl typically cost ฿1,570, while return flights cost around ฿4,843.

  • How much is a return flight to Seoul?

    A return flight to Seoul will typically cost around ฿10,260, however they can be found for as little as ฿4,843.

  • Where does the fastest flight to Seoul depart from?

    For those looking to save time traveling to Seoul, Chiang Mai offers the quickest one-way flight (5 hours 15 minutes).

  • Does Incheon Intl have rental cars?

    Yes. Those touching down at Incheon Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Incheon Intl?

    Yes. Incheon Intl has hotels nearby for those requiring accommodations. Darakhyu Incheon Airport Terminal 2 Capsule Hotel by Walkerhill is the closest property to Incheon Intl (0.0 km away from Incheon Intl).

See more FAQs

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