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฿4,863+ 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
— SEL
7 Jun — 14 Jun1
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 8 May 2026.

Tue 26/519:10
BKK
-
ICN
2 stops17h 45m
China Eastern
Fri 5/614:30
ICN
-
BKK
1 stop8h 25m
China Eastern
Deal found 4/5฿9,629
Thu 11/602:25
BKK
-
ICN
Nonstop5h 35m
Multiple Airlines
Tue 16/616:55
ICN
-
BKK
1 stop24h 40m
Multiple Airlines
Deal found 4/5฿9,661
Wed 27/520:50
BKK
-
ICN
2 stops22h 15m
China Eastern
Sun 28/614:30
ICN
-
BKK
1 stop24h 00m
China Eastern
Deal found 4/5฿9,693
Tue 2/602:45
DMK
-
ICN
Nonstop5h 50m
Thai AirAsia
Sun 7/612:05
ICN
-
DMK
Nonstop5h 45m
Thai AirAsia
Deal found 4/5฿9,758
Wed 17/615:55
BKK
-
ICN
2 stops17h 00m
China Eastern
Wed 24/614:30
ICN
-
BKK
1 stop13h 25m
China Eastern
Deal found 3/5฿9,758
Mon 15/602:45
DMK
-
ICN
Nonstop5h 50m
Thai AirAsia
Tue 30/612:05
ICN
-
DMK
Nonstop5h 45m
Thai AirAsia
Deal found 5/5฿9,790
Fri 29/520:50
BKK
-
ICN
2 stops22h 15m
China Eastern
Sun 28/614:30
ICN
-
BKK
1 stop24h 00m
China Eastern
Deal found 4/5฿9,790
Wed 2/906:35
DMK
-
ICN
1 stop12h 00m
Multiple Airlines
Sat 5/912:05
ICN
-
DMK
Nonstop5h 45m
Multiple Airlines
Deal found 5/5฿9,822
Fri 22/520:50
BKK
-
ICN
2 stops22h 15m
Multiple Airlines
Tue 18/812:10
ICN
-
BKK
Nonstop5h 50m
Multiple Airlines
Deal found 4/5฿9,822
Thu 28/520:50
BKK
-
ICN
2 stops22h 15m
China Eastern
Sun 28/614:30
ICN
-
BKK
1 stop24h 00m
China Eastern
Deal found 4/5฿9,854
Tue 1/902:45
DMK
-
ICN
Nonstop5h 50m
Thai AirAsia
Thu 10/912:05
ICN
-
DMK
Nonstop5h 45m
Thai AirAsia
Deal found 5/5฿9,886
Fri 19/620:50
BKK
-
ICN
2 stops22h 15m
China Eastern
Fri 26/614:30
ICN
-
BKK
1 stop8h 25m
China Eastern
Deal found 4/5฿9,886

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 8 May 2026.

Return from

฿9,629

One-way from

฿4,863

Popular in

December

Cheapest in

September

Average price

฿9,403
China Eastern
  • China Eastern
  • 26/5-5/6
  • 3 total stops
  • 26h 10m total
  • Bangkok to Seoul
Search Deals
12/6
  • 12/6
  • 1 total stop
  • 21h 00m total
  • Bangkok to Seoul
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (฿997 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (฿231 potential savings vs. average return price).
Search Deals
Average for return flights in May 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 8 May 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

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Tue 16/6

02:10-21:05

2 stops16h 55m

Incheon Intl

Wed 24/6

14:30-14:55

3 stops26h 25m

฿10,949

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Fri 19/6

15:55-10:55

2 stops17h 00m

Incheon Intl

Thu 25/6

11:55-00:40

2 stops14h 45m

฿11,046

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Sat 30/5

02:10-18:30

1 stop14h 20m

Incheon Intl

Sun 7/6

07:45-04:05

2 stops22h 20m

฿11,271

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Sat 6/6

15:55-20:45

3 stops26h 50m

Incheon Intl

Sat 13/6

12:15-01:10

1 stop14h 55m

฿11,754

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Tue 2/6

02:10-18:30

1 stop14h 20m

Incheon Intl

Wed 10/6

13:10-04:05

2 stops16h 55m

฿11,819

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Wed 27/5

13:20-11:00

3 stops19h 40m

Incheon Intl

Thu 4/6

08:55-15:50

1 stop8h 55m

฿12,173

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Wed 3/6

21:55-11:55

1 stop12h 00m

Incheon Intl

Thu 4/6

16:15-00:40

1 stop10h 25m

฿12,302

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Sat 6/6

01:10-08:55

Nonstop5h 45m

Incheon Intl

Thu 11/6

20:05-00:10

Nonstop6h 05m

฿12,978

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Sat 22/8

18:05-06:00

1 stop9h 55m

Incheon Intl

Mon 31/8

10:05-18:05

1 stop10h 00m

฿13,107

BangkokIncheon

BKK - ICN

BKKICN

Bangkok Suvarnabhumi

Tue 6/10

15:55-05:50

1 stop11h 55m

Incheon Intl

Wed 21/10

18:05-10:50

1 stop18h 45m

฿13,139

Flights are sorted by cheapest return flights first.

Deals found on 3/5

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?

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 75 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 7 hours 26 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 Wednesday (33 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 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 Airways and Thai Vietjet Air.

Thai AirAsia X
Thai AirAsia X
From ฿3,499
Thai Airways
Thai Airways
From ฿8,248
Thai Vietjet Air
Thai Vietjet Air
From ฿3,640
Korean Air
Korean Air
From ฿6,149

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 8 May 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
1,217 reviews
Check prices

Boarding

8.5

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

Crew

8.7

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

Boarding

8.5

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

Crew

8.7

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

Boarding

8.5

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

Crew

8.7

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

Boarding

8.5

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

Crew

8.7

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

Boarding

8.5

Food

8.1

Overall

8.4

Entertainment

8.2

Comfort

8.3

Crew

8.7

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 ฿1,582, while return flights cost around ฿5,303.

  • How much is a return flight to Seoul?

    A return flight to Seoul will typically cost around ฿9,089, however they can be found for as little as ฿5,303.

  • 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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