฿3,430 Find Cheap Flights to Seoul – Compare and Save

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Everything you should know

Cheapest return flight
฿6,826
Typical prices: ฿7,752-฿13,084
Jeju Air
Mon 1/10Sun 7/10
CNX - ICN • Direct
Cheapest direct flights
฿6,826
Typical prices: ฿7,773-฿13,071
Jeju Air
Mon 1/10Tue 9/10
CNX - ICN • Direct
Direct flights
You can fly direct with Korean Air, Thai Airways, and others. Average duration is 5h 28m.
FAQs
FAQs
Top airlines
Most flights • 39 per week
Best reviews • 8.4 score
Airline reviews
+1
Airline reviews
+1
Top routes
Cheapest • 22% average savings
Most popular
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 18% price drop
Most popular
Good to know
+1
Good to know
+1
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We hope you enjoy your trip to Seoul!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to Seoul

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Seoul

Thu 1 Oct - Wed 7 Oct
Jeju Air Logo
23:00 - 06:30CNX  Chiang Mai-ICN Incheon Intl
5h 30mdirect
Jeju Air Logo
18:10 - 22:00ICN  Incheon Intl-CNX Chiang Mai
5h 50mdirect
฿6,826Jeju Air
Thu 1 Oct - Wed 7 Oct
Multiple Airlines Logo
23:55 - 07:10CNX  Chiang Mai-ICN Incheon Intl
5h 15mdirect
Multiple Airlines Logo
18:10 - 22:00ICN  Incheon Intl-CNX Chiang Mai
5h 50mdirect
฿6,860Multiple Airlines
Sat 3 Oct - Wed 7 Oct
Multiple Airlines Logo
23:00 - 06:30CNX  Chiang Mai-ICN Incheon Intl
5h 30mdirect
Multiple Airlines Logo
19:55 - 23:50ICN  Incheon Intl-CNX Chiang Mai
5h 55mdirect
฿6,893Multiple Airlines
Thu 1 Oct - Mon 5 Oct
Jeju Air Logo
23:00 - 06:30CNX  Chiang Mai-ICN Incheon Intl
5h 30mdirect
Jeju Air Logo
18:10 - 22:00ICN  Incheon Intl-CNX Chiang Mai
5h 50mdirect
฿7,492Jeju Air
Wed 30 Sep - Mon 5 Oct
Trinity Airways Logo
00:05 - 07:40BKK  Bangkok Suvarnabhumi-ICN Incheon Intl
5h 35mdirect
Trinity Airways Logo
18:00 - 22:05ICN  Incheon Intl-BKK Bangkok Suvarnabhumi
6h 05mdirect
฿7,692Trinity Airways
Thu 1 Oct - Thu 8 Oct
Trinity Airways Logo
00:05 - 07:40BKK  Bangkok Suvarnabhumi-ICN Incheon Intl
5h 35mdirect
Trinity Airways Logo
18:00 - 22:05ICN  Incheon Intl-BKK Bangkok Suvarnabhumi
6h 05mdirect
฿7,725Trinity Airways
Wed 30 Sep - Thu 8 Oct
Thai Vietjet Air Logo
02:25 - 10:00BKK  Bangkok Suvarnabhumi-ICN Incheon Intl
5h 35mdirect
Thai Vietjet Air Logo
12:10 - 16:00ICN  Incheon Intl-BKK Bangkok Suvarnabhumi
5h 50mdirect
฿8,225Thai Vietjet Air
Fri 2 Oct - Mon 12 Oct
Thai Vietjet Air Logo
02:25 - 10:00BKK  Bangkok Suvarnabhumi-ICN Incheon Intl
5h 35mdirect
Thai Vietjet Air Logo
12:10 - 16:00ICN  Incheon Intl-BKK Bangkok Suvarnabhumi
5h 50mdirect
฿8,225Thai Vietjet Air
Thu 3 Dec - Wed 9 Dec
Eastar Jet Logo
22:25 - 06:20BKK  Bangkok Suvarnabhumi-ICN Incheon Intl
5h 55mdirect
Eastar Jet Logo
17:05 - 21:25ICN  Incheon Intl-BKK Bangkok Suvarnabhumi
6h 20mdirect
฿8,525Eastar Jet
Tue 3 Nov - Mon 16 Nov
Eastar Jet Logo
22:25 - 06:20BKK  Bangkok Suvarnabhumi-ICN Incheon Intl
5h 55mdirect
Eastar Jet Logo
17:05 - 21:25ICN  Incheon Intl-BKK Bangkok Suvarnabhumi
6h 20mdirect
฿8,624Eastar Jet
Booking Insights

Price, demand, and travel trends for Thailand to Seoul flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Thailand to Seoul with more confidence.

What is the cheapest flight to Seoul?

Chiang Mai to Seoul is the cheapest route at ฿6,826 return, found in the past 5 days on KAYAK. Bangkok Suvarnabhumi Airport to Seoul is the most popular connection with return deals from ฿7,692.

How much is a flight to Seoul?

A return flight to Seoul costs ฿10,128 on average, based on data over the past 12 months on KAYAK. Return fares from Bangkok Suvarnabhumi Airport average ฿10,349, while Khon Kaen runs a bit higher at ฿12,547.

What is the cheapest day to fly to Seoul?

Tuesday is the cheapest day to fly to Seoul at ฿9,990 return on average over the past 12 months on KAYAK. Sunday is the most expensive at ฿10,989.

What is the cheapest month to fly to Seoul?

•September is the cheapest month to fly to Seoul with an average price of ฿8,258 return.
•December (฿11,621) and April (฿11,488) are the most expensive.
•Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Seoul?

Night flights to Seoul are the cheapest at ฿10,023 return on average. Afternoon flights are the most expensive at ฿12,587.

When are flights to Seoul the cheapest?

Flights to Seoul are cheapest 3 weeks before departure. Booking in this window typically costs about 17% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for flights to Seoul

Low season

July

Cheapest flight

฿3,430
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 15% lower on average.
Flights from Chiang Mai to Incheon Intl Airport

When to book flights to Seoul

Are your dates flexible? Find out the best times to travel to Seoul based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Flights to Seoul: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew to Seoul 
Verified travelerFlew with Asiana Airlines-Jun 2025
Do not check a suitcase take a carry on
ArthurFlew with เดลต้า-Jul 2024
Make sure to select an aisle seat. Korean Aur flight attendants are. very nice and try to help . My overhearing light was broken !

Your questions about flights to Seoul, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • What is the difference between the most popular and the most frequent airline at Seoul?

    Korean Air operates the most flights from Thailand to Seoul at 39 per week, while Thai Airways is the airline most often selected by KAYAK users searching for flights from Thailand to Seoul. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

  • Which airports serve Seoul?

    Flights to Seoul arrive at: Seoul Gimpo Intl (GMP) and Incheon Intl (ICN).

  • Which airports serve Seoul and the surrounding area?

    Flights to Seoul can arrive at several major airports serving the metro area, including Seoul Gimpo Intl (GMP) and Incheon Intl (ICN). Nearby alternatives within 80.5 km of Seoul include Seoul Gimpo Intl (GMP). This airport is not in Seoul itself but may be useful depending on your route, airline, and onward travel plans.

  • How long are direct flights to Seoul from different departure cities?

    Direct flight time to Seoul varies depending on your departure city:

    • from Bangkok Suvarnabhumi Airport: 5h 00m
    • from Phuket City: 5h 45m
    • from Chiang Mai: 4h 45m

  • Where can I fly from to get the cheapest fares to Seoul?

    Based on fares booked in the past 5 days, the cheapest flights to Seoul are from:
    • Bangkok, from ฿7,692 return

  • How many flights serve Seoul?

    Seoul receives 20 flights per day and 137 per week from across the world. Bangkok Suvarnabhumi Airport has the most flights to Seoul with 90 weekly flights.

  • How do I know if a flight to Seoul is a good deal?

    A good deal on a flight to Seoul is around ฿7,752 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • How expensive are last-minute flights to Seoul?

    Last-minute fares to Seoul – booked within 2 weeks of departure – run 6% above the average return fare of ฿10,128.

Your guide to booking Seoul flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For the best chance at a low fare to Seoul, aim to book around 3 weeks before you fly. That window historically saves about 17% versus last-minute pricing based on KAYAK booking data over the last 12 months.
  • For flights to Seoul, recent KAYAK data shows that stronger deals tend to be around ฿7,752 return. If you see a fare below that threshold, it's a good deal – book before the price climbs back up.
  • If you can choose when to go, aim to travel to Seoul in September. Return fares historically average ฿8,258 that month – typically the cheapest month to travel based on the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat selection costs on budget carriers.
    • Verify whether you need any travel documents beyond an ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to evening to save up to ฿2,564 per return. Evening flights to Seoul average ฿10,023 compared to ฿12,587 for midday flights. See the time-of-day chart above for the full breakdown.
  • Bag allowances vary by airline, fare type, cabin class, and route. On flights to Seoul, some airlines may include bags at no extra cost. For example, Jeju Air includes a cabin bag and a checked bag in Economy class, AIR PREMIA includes a cabin bag and a checked bag in Economy class, and Asiana Airlines includes a cabin bag and a checked bag in Economy class. Always check the fare details before booking, since bag policies can change by ticket type.
  • Once you arrive in Seoul, a great place to start is Gyeongbokgung Palace. It is popular with first-time visitors and can give you a good feel for the area.

Reviews of the top 5 airlines flying to Seoul

 
Need help choosing which airline to fly with to Seoul? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1218 reviews
8.1Food
8.5Boarding
8.7Crew
8.2Entertainment
8.3Comfort
Airline reviews

Excellent. All well and accommodating. Clean and very good food. Peaceful travel experience

10.0 ExcellentBernadette, Jun 2026
Read more Korean Air reviews

Excellent. All well and accommodating. Clean and very good food. Peaceful travel experience

The food wasn't to good but the crews were great, clean plan clean bathrooms always

Always on time and flight crew were great. Boarding in Manila was a bit chaotic and disorganized compared to Incheon.

Never had a flight delay issue with Korean Air, that's why I always go with this airline.

Flight crew were very attentive and made this trip a pleasure. Plus the fact that this our first time flying business class.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

Korean are so racist and when I ask question or directions they totally ignore me and say racist. Also they give me an rude attitude.

This was an amazing flight. The crew was great. The service was great. The food provided was great.

Flight delayed going to Korea. No free WiFi. Other than that everything else is were good. I would love to fly with Korea airline again

Comfortable seats but I had a hard time with the reclining pull.

Reasonable fair, good service, in sum, I am very happy!

Seating was good in the economy with plenty of leg room. The seat cushions were a little firm though, especially for such a long flight. All meals were Korean as would be expected. The food was typical airline quality. Edible, but not something you would recommend to friends. Inflight entertainment was also all Korean but Korean tv and movies are made well and you can find something to watch. Just be prepared to read subtitles. Overall it was a good flight, especially for the price.

The person in front of me was rude. He may came from some communism countries and don’t care of other people. No common manner and sense between human being.

Very nice staff, airplanes, and an excellent value in premium economy.

First time flying with them and was pleasantly surprised. I had a premium economy seat which is very similar to some other airlines regional business class product. Seat was large, pillow was provided, huge amount of leg room, entertainment was available (only Korean shows), and lunch meal was served between Narita and Seoul. Really enjoyable and affordable

The staff were very friendly, and the flight was comfortable. That said, there was no option to specify dietary restrictions before the flight, so you may need to bring your own food. Also, there was no wifi available for the flight, though there is an in-flight entertainment console with many Korean-language shows and movies.

The legroom was great for a 5’11” person. The 11 hour direct flight had two meal services included in the ticket price which was less than other airline’s cost without food service (Canada air)from sfo to incheon. The airline is focused towards Korean nationals with the onboard entertainment selection of Korean movies but English subtitles were available. Overall premia air is a great option to fly from the US to Korea.

Plane and service were great. The entertainment is only for Koreans. Wish there were vegetarian options for food. All in all pleasantly surprised. Economy premium was quite good.

Great airline, but there was no English entertainment (movies or shows)

Excellent service in business class. Well worth the slightly higher fare as it includes lounge access, additional luggage weight and a full hot meal on board.

HAVING ANNOUNCEMENTS FOR PEOPLE TO BOARD ACCORDING TO GROUP IS ESSENTIAL N ENSURING N CUTTING OF QUEUES, EXCEPT FOR PRIORITY CLASS PASSENGERS ON A SEPARATE Q

We still get drinks and a snack. Love the gift bags too.

business class is old but still done very well by the team.

Good experience although the boarding gate is at the terminal extension hence need to leave lounge to head over earlier.

Thai Royal First is very good. Easy check in , Private room in the first class lounge and escort from ticketing to the plane. Once on board crew was very polite, food was outstanding, and the ride was smooth as silk. Restrooms were especially clean. Great Experience

Need to improve on punctuality. My flight was delayed by 1 hour.

Seats were uncomfortable and the vegetarian meal was awful. Some of the entertainment didn't work.

Although booked meal of fruit only The crew had not received this special meal The same happened on my flight Bangkok / CAN The films are so old that best is to use own computer to watch downloads . Serve nuts but they do not warm up . Service is attentive , WC clean

They used Thai Smile plane, which is a smaller model and used to service only domestic flights; hence, the plane is small and quite compact. No entertainment on the flight. While boarding was delayed, it was done in a quick manner.

I rated the experience poor because I had to purchase new tickets to return to Phuket because the airline had no record of my flight.

i think allowing passenger to have personal handbags or bags in their lap is a safety issue. As for food there was not onbpard and had no other choice. We also waited for over 1hour 10 min for some reason and keep getting we will be departing soon.

Newer plane and comfortable. No wifi and thier website and App. are horrible. Tried to purchase luggage online and could not do it.

I don't like this airline. The website is not user friendly. I tried to check in multiple times and no joy. Then I googled why might this airline not let me check in and it said if you are checking baggage you can't check in. I really thought that I had purchased baggage. Because I have been traveling for 3 months and making sure that I pay for baggage on every flight. This flight they said that I had not purchased baggage but there is really no way to check on the passenger side.

I wasn't able to check in. The website could find my reservation but then an error occurred. I tried 4 times spread out through the day and got the error message every time.

well it was a short flight so there was no food but couldnt answer that question with a N/A There was no entertainment so N/A but the flight was great and staff was number #1

Never on time when I fly and Thai Vietjet App is too complicated. I had booked und paid for seat number 15A but when checked in, I got another seat number and row. I paid extra 50 bath for what??? They couldn’t change and I got no refund. No time to discuss with the ground crew to change it. I would never pay for seat anymore.

Excellent experience nothing could be improved with staff. Was hoping someday the airline will use tape recorded lfor languages that are not common to staff. Probably with AI it might be a good addition

We were packed in like sardines. They did not even serve water on the flight!

Everything was good just the part on the need to transfer via bus to plane

Good seats. Check in, baggager, etc ... all went smoothly. Those are the things that matter. Food could have been better. Also ok, you are a budget airline, but maybe you could offer us plain bottled water. That wouldn't cost much and it is difficult to bring ourselves and difficult to be without.

The flight on the 8.10was canceld so i had to by tickt on anather airline As the low say i will need a full refand of the mony i paid you for this flight! Thenk you Dan richental

No snacks meal or drinks for 9hr flight, no entertainment options. Crew appeared tired, irritable. It's apparently a budget airline, they make sure it feels that way.

Un peu déçu par le vol, c’est la première fois que je prend un vol de 6h ou les boissons et la nourriture sont payantes et pas inclus dans le vol. Peut être que c’est propre à la compagnie mais ça m’a surprise. Le fait qu’il n’y est pas d’écran pour pouvoir passer le temps était aussi un point négatif. Cependant le personnel était très agréable.

First time of flying with Air Asia and great choice

Don't even offer water on a 5 and half hours flight. Its laughable one have to rent a blanket.

No free water. Water cost money in a currency that I didn’t have.

Pay for food on an almost 6 hour flight. Very tight space, I had to show my boarding pass for the food I paid and the blanket set. I had an online boarding pass, that didn’t work, I had to take out the printed boarding pass out of the overhead locker whilst my neighbour was eating, as I was sitting in a Center seat. The staff was very friendly and got my bag out but it didn’t make sense. As the online boarding pass was enough for the blanket set. But not for the food. Just to make a check on the piece of paper. I had a warm free meal on an one hour flight from BKK to Samui with Bangkok airways. So airasia just tries to save money where they can.

More options for your flight to Seoul