ICN

฿3,715 Find Cheap Flights to Seoul Incheon Airport – Compare and Save

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Everything you should know

Cheapest return flight
฿6,708
Typical prices: ฿7,654-฿12,887
Jeju Air
Mon 1/10Wed 10/10
CNX - ICN • Direct
Cheapest one-way flight
฿3,715
Typical prices: ฿4,773-฿9,564
Jeju Air
Mon 1/10
CNX - ICN • Direct
Direct flights
You can fly direct with Korean Air, Thai Airways, and others. Average duration is 5h 29m.
FAQs
FAQs
Top airlines
Most flights • 35 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 Incheon Intl Airport!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to Incheon Intl

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

Recent return flight deals to Incheon Intl

Thu 1 Oct - Sat 10 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
฿6,708Jeju Air
Sat 3 Oct - Sat 10 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
฿6,839Jeju Air
Thu 1 Oct - Sat 10 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
฿7,036Multiple Airlines
Wed 23 Sep - Mon 28 Sep
Multiple Airlines Logo
00:50 - 08:15CNX  Chiang Mai-ICN Incheon Intl
5h 25mdirect
Multiple Airlines Logo
18:10 - 22:00ICN  Incheon Intl-CNX Chiang Mai
5h 50mdirect
฿7,201Multiple Airlines
Wed 30 Sep - Wed 7 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
฿7,431Thai Vietjet Air
Mon 21 Sep - Sat 26 Sep
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
฿7,727Trinity Airways
Wed 23 Sep - Wed 30 Sep
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
฿7,727Trinity Airways
Thu 1 Oct - Sat 10 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
฿7,793Thai Vietjet Air
Sun 1 Nov - Sat 14 Nov
Thai AirAsia Logo
02:30 - 10:05DMK  Bangkok Don Mueang Intl-ICN Incheon Intl
5h 35mdirect
Thai AirAsia Logo
11:20 - 15:30ICN  Incheon Intl-DMK Bangkok Don Mueang Intl
6h 10mdirect
฿8,319Thai AirAsia
Sat 31 Oct - Sat 7 Nov
Thai AirAsia Logo
02:30 - 10:05DMK  Bangkok Don Mueang Intl-ICN Incheon Intl
5h 35mdirect
Thai AirAsia Logo
11:20 - 15:30ICN  Incheon Intl-DMK Bangkok Don Mueang Intl
6h 10mdirect
฿8,450Thai AirAsia
Booking Insights

Price, demand, and travel trends for Thailand to Incheon Intl Airport flights

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

What is the cheapest flight to Incheon Intl Airport?

Chiang Mai to Incheon Intl Airport is the cheapest route at ฿6,708 return, found in the past 5 days on KAYAK. Bangkok Suvarnabhumi Airport to Incheon Intl Airport is the most popular connection with return deals from ฿7,431.

How much is a flight to Incheon Intl Airport?

A return flight to Incheon Intl Airport costs ฿9,992 on average, based on data over the past 12 months on KAYAK. Return fares from Bangkok Suvarnabhumi Airport average ฿10,218, while Khon Kaen runs a bit higher at ฿12,390.

What is the cheapest day to fly to Incheon Intl Airport?

Tuesday is the cheapest day to fly to Incheon Intl Airport at ฿9,831 return on average over the past 12 months on KAYAK. Sunday is the most expensive at ฿10,850.

What is the cheapest month to fly to Incheon Intl Airport?

  • September is the cheapest month to fly to Incheon Intl Airport with an average price of ฿8,154 return.
  • December (฿11,475) and April (฿11,344) are the most expensive.
  • Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Incheon Intl Airport?

Night flights to Incheon Intl Airport are the cheapest at ฿9,897 return on average. Afternoon flights are the most expensive at ฿12,429.

When are flights to Incheon Intl Airport the cheapest?

Flights to Incheon Intl Airport 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 Incheon Intl Airport

Low season

July

Cheapest flight

฿3,715
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 Incheon Intl

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

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

Insights shared by verified travellers who flew to Incheon Intl 
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 Incheon Intl Airport, 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 Incheon Intl Airport?

    Korean Air operates the most flights from Thailand to Incheon Intl Airport at 35 per week, while Thai Airways is the airline most often selected by KAYAK users searching for flights from Thailand to Incheon Intl Airport. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

  • 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 Incheon Intl Airport from different departure cities?

    Direct flight time to Incheon Intl Airport 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 Incheon Intl Airport?

    Based on fares booked in the past 5 days, the cheapest flights to Incheon Intl Airport are from:
    • Bangkok, from ฿7,431 return

  • How many flights serve Incheon Intl Airport?

    Incheon Intl Airport receives 19 flights per day and 134 per week from across the world. Bangkok Suvarnabhumi Airport has the most flights to Incheon Intl Airport with 90 weekly flights.

  • How do I know if a flight to Incheon Intl Airport is a good deal?

    A good deal on a flight to Incheon Intl Airport is around ฿7,654 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 Incheon Intl Airport?

    Last-minute fares to Incheon Intl Airport – booked within 2 weeks of departure – run 6% above the average return fare of ฿9,992.

  • Which airlines should I consider for flights to Incheon Intl Airport?

Your guide to booking Incheon Intl Airport 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 Incheon Intl Airport, 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 Incheon Intl Airport, recent KAYAK data shows that stronger deals tend to be around ฿7,654 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 Incheon Intl Airport in September. Return fares historically average ฿8,154 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 ฿2,532 per return. Evening flights to Incheon Intl Airport average ฿9,897 compared to ฿12,429 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 Incheon Intl Airport, 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 Thai Airways 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 Incheon Intl Airport, a great place to start is Songdo Convensia. 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 Incheon Intl

 
Need help choosing which airline to fly with to Incheon Intl? 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 1221 reviews
8.5Boarding
8.2Entertainment
8.3Comfort
8.7Crew
8.1Food
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.

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