Cheap flights from Chiang Mai to Seoul

Chiang Mai
CNX
Seoul
SEL

Flight deals from Chiang Mai to Seoul

Below you can see the best deals on flights Chiang Mai — Seoul for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

The lowest price for the next 2 months is on 24 September, from $126.

Top 10 cheap flights from Chiang Mai to Seoul

BX
$ 143

Chiang Mai — Seoul

00:50—08:15
11 Sep 2026
5 h 25 m
Direct flight
BX
$ 157

Chiang Mai — Seoul

00:50—08:15
6 Sep 2026
5 h 25 m
Direct flight
BX
$ 157

Chiang Mai — Seoul

00:50—08:15
3 Sep 2026
5 h 25 m
Direct flight
VZ
VZ
$ 158

Chiang Mai — Seoul

22:30—10:00
10 Sep 2026
9 h 30 m
1 stop
VZ
VZ
$ 158

Chiang Mai — Seoul

20:35—10:00
10 Sep 2026
11 h 25 m
1 stop
7C
$ 159

Chiang Mai — Seoul

23:00—06:30
5 Sep 2026
5 h 30 m
Direct flight
7C
$ 159

Chiang Mai — Seoul

23:00—06:30
12 Sep 2026
5 h 30 m
Direct flight
7C
$ 159

Chiang Mai — Seoul

23:00—06:30
9 Sep 2026
5 h 30 m
Direct flight
7C
$ 159

Chiang Mai — Seoul

23:00—06:30
10 Sep 2026
5 h 30 m
Direct flight
VZ
VZ
$ 162

Chiang Mai — Seoul

22:30—10:00
8 Sep 2026
9 h 30 m
1 stop

Prices were found in the last 72 hours and may change — check the exact price when you continue.

When is the best time to book a flight from Chiang Mai to Seoul?

The price of a flight from Chiang Mai to Seoul changes depending on how far ahead you book. For the best chance of a lower fare, book around 30 days before departure, when the average ticket costs about $660. Fares also tend to climb as the departure date gets closer.

About the Chiang Mai — Seoul flight

Looking for cheap flights from Chiang Mai to Seoul? Compare fares from different airlines, check the flight schedule and travel time — and book your Chiang Mai — Seoul ticket online at the best price.

The route has direct flights — around 43 flights per week, flights are operated by T'way Air, Jeju Air, Jin Air, Eastar Jet and 2 more airlines, a nonstop flight takes about 5 h 20 min, the distance between the cities is around 3,425 km.

Planning your trip? You may find our Seoul travel guide, how to get from the airport into town and Seoul weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

from $131Min. price
SeptemberCheapest
JunePeak season
YesDirect flights
3,425 kmDistance
5 h 20 minTravel time
6Airlines
43 / wkFlights

Flight schedule from Chiang Mai to Seoul

The table shows direct flights from Chiang Mai to Seoul on the selected date. The flight takes approximately 5 h 20 min. Regular flights are operated by T'way Air, Jeju Air, Jin Air and Eastar Jet. Departures from Chiang Mai International Airport airports, arrivals at Incheon International Airport and Gimpo International Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 14 Aug 2026

Flight ticket prices by day: Chiang Mai — Seoul

Below is a calendar of the lowest flight ticket prices for Chiang Mai — Seoul by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $131 in September, and the most expensive are around $306 in June. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Chiang Mai to Seoul by month. Tickets are usually cheapest in July (around $137) and priciest in October (about $277) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$187mediumMay$144lowSep$175medium
Feb$233highJun$139lowOct$277high
Mar$156mediumJul$137lowNov$212high
Apr$141lowAug$163mediumDec$161medium

Some values are estimated based on seasonality.

When to fly

Weather in Seoul: it is warmest in August (up to 29 °C on average) and coolest in January (around 2 °C). The driest month is January.

Tickets are usually cheapest in September and most expensive in June. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Seoul

Dry and wet days · Seoul

Wind speed and direction · Seoul

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How to get the best deal on a Chiang Mai — Seoul ticket

  • Book ahead: fares for Chiang Mai — Seoul are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • The cheapest month to fly to Seoul is usually September — plan your trip around it if your dates are flexible.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Chiang Mai — Seoul route are operated by 6 airlines; T'way Air runs the most flights (around 35% of all flights). Compare carriers, flight shares and schedules below.

  • T'way AirTW
    5x/week
    WebsiteFleet: 3810M pax/year
    • Direct flight CNX → ICN5x/week
    34.9%Open →
  • Jeju Air7C
    3x/week
    WebsiteFleet: 4213.4M pax/year
    • Direct flight CNX → ICN3x/week
      Duration
      5h 30m
      Days
      MTWTFSS
    18.6%Open →
  • Jin AirLJ
    3x/week
    WebsiteFleet: 3111M pax/year
    • Direct flight CNX → ICN3x/week
      Duration
      5h 20m
      Days
      MTWTFSS
    18.6%Open →
  • Eastar JetZE
    2x/week
    WebsiteFleet: 154.4M pax/year
    • Direct flight CNX → ICN2x/week
      Duration
      5h 15m
      Days
      MTWTFSS
    16.3%Open →
  • Air BusanBX
    1x/week
    WebsiteFleet: 225.8M pax/year
    • Direct flight CNX → ICN1x/week
      Duration
      5h 25m
      Days
      MTWTFSS
    9.3%Open →
  • Korean AirKE
    1x/week
    WebsiteFleet: 16025M pax/year
    • Direct flight CNX → ICN1x/week
    2.3%Open →

Cities and airports on the Chiang Mai — Seoul route

Flights Chiang Mai — Seoul depart from Chiang Mai International Airport and arrive at Incheon International Airport and Gimpo International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Chiang Mai

CNX
Thailand
About the cityHow to get thereWeatherAll about the country Thailand
Arrival

Seoul

SEL
Korea, Republic Of
About the cityHow to get thereWeatherAll about the country Korea, Republic Of
Departure airports
Arrival airports

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Frequently asked questions about the Chiang Mai — Seoul flight

How long is the flight from Chiang Mai to Seoul?

A nonstop Chiang Mai — Seoul flight takes about 5 h 20 min — the distance between the cities is around 3,425 km.

How far is it from Chiang Mai to Seoul?

The distance from Chiang Mai to Seoul is about 3,425 km, which a nonstop flight covers in around 5 h 20 min.

Are there direct flights from Chiang Mai to Seoul?

Yes, there are nonstop flights Chiang Mai — Seoul — around 43 flights per week.

Which airlines fly from Chiang Mai to Seoul?

Airlines operating Chiang Mai — Seoul include T'way Air, Jeju Air, Jin Air, Eastar Jet, Air Busan. See the full list with schedules in the "Airlines" section on this page.

Which airports do Chiang Mai — Seoul flights use?

Flights from Chiang Mai depart from Chiang Mai International Airport, and arrive at Incheon International Airport, Gimpo International Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Chiang Mai to Seoul?

The price of a Chiang Mai — Seoul ticket depends on your travel date, season and demand: it is usually cheapest to fly in September, and most expensive in June. Tickets typically cost between $131 and $306. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Chiang Mai — Seoul?

Flights Chiang Mai — Seoul are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is September. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Chiang Mai to Seoul?

To catch a low fare Chiang Mai — Seoul, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance: the most budget-friendly month to fly is usually September.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Chiang Mai

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BangkokPhuketTaipeiHong KongSingaporeKrabiKuala LumpurKunmingYangonGuangzhouShanghaiKhon KaenKoh SamuiHanoiUdon ThaniSurat ThaniAbu DhabiBeijingHat YaiManilaPattayaHua HinLuang PrabangOsakaBusanSapporoMandalay

Where else you can fly from Seoul

See all
Jeju CityTokyoOsakaShanghaiBusanHong KongFukuokaBangkokQingdaoTaipeiBeijingDa NangHo Chi Minh CitySingaporeHanoiNagoyaNha TrangUlaanbaatarManilaLos AngelesSapporoCebu CityPhu QuocKuala LumpurDenpasarOkinawaHagatnaGuangzhouDalianYanjiJakartaNew York CitySeattleShenzhenMacauYantaiTashkentShenyangSan FranciscoParis

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