Cheap flights from Seoul to Chiang Mai

Seoul
SEL
Chiang Mai
CNX

Flight deals from Seoul to Chiang Mai

Below you can see the best deals on flights Seoul — Chiang Mai 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 30 August, from $70.

Top 10 cheap flights from Seoul to Chiang Mai

ZE
$ 69

Seoul — Chiang Mai

18:30—22:10
12 Sep 2026
5 h 40 m
Direct flight
ZE
$ 69

Seoul — Chiang Mai

18:30—22:30
6 Sep 2026
6 h
Direct flight
ZE
$ 69

Seoul — Chiang Mai

18:30—22:15
16 Sep 2026
5 h 45 m
Direct flight
ZE
$ 69

Seoul — Chiang Mai

18:30—22:30
20 Sep 2026
6 h
Direct flight
ZE
$ 69

Seoul — Chiang Mai

18:30—22:30
10 Sep 2026
6 h
Direct flight
ZE
$ 71

Seoul — Chiang Mai

18:30—22:30
13 Sep 2026
6 h
Direct flight
ZE
$ 71

Seoul — Chiang Mai

18:30—22:40
30 Aug 2026
6 h 10 m
Direct flight
BX
$ 78

Seoul — Chiang Mai

19:55—23:50
5 Sep 2026
5 h 55 m
Direct flight
BX
$ 81

Seoul — Chiang Mai

19:55—23:50
30 Aug 2026
5 h 55 m
Direct flight
BX
$ 82

Seoul — Chiang Mai

19:55—23:50
13 Sep 2026
5 h 55 m
Direct flight

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

About the Seoul — Chiang Mai flight

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

The route has direct flights — around 44 flights per week, flights are operated by T'way Air, Jeju Air, Jin Air, Korean Air and 2 more airlines, a nonstop flight takes about 5 h 25 min, the distance between the cities is around 3,425 km.

Planning your trip? You may find our Chiang Mai travel guide, how to get from the airport into town and Chiang Mai 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 $70Min. price
AugustCheapest
MayPeak season
YesDirect flights
3,425 kmDistance
5 h 25 minTravel time
6Airlines
44 / wkFlights

Flight schedule from Seoul to Chiang Mai

The table shows direct flights from Seoul to Chiang Mai on the selected date. The flight takes approximately 5 h 25 min. Regular flights are operated by T'way Air, Jeju Air, Jin Air and Korean Air. Departures from Incheon International Airport and Gimpo International Airport airports, arrivals at Chiang Mai 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: 26 Aug 2026

Flight ticket prices by day: Seoul — Chiang Mai

Below is a calendar of the lowest flight ticket prices for Seoul — Chiang Mai by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $70 in August, and the most expensive are around $268 in May. 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 Seoul to Chiang Mai by month. Tickets are usually cheapest in October (around $114) and priciest in July (about $192) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$174highMay$126lowSep$132medium
Feb$132mediumJun$126lowOct$114low
Mar$120lowJul$192highNov$144medium
Apr$138mediumAug$174highDec$168high

Some values are estimated based on seasonality.

When to fly

Weather in Chiang Mai: it is warmest in April (up to 34 °C on average) and coolest in December (around 27 °C). The driest month is February.

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

Temperature · Chiang Mai

Dry and wet days · Chiang Mai

Wind speed and direction · Chiang Mai

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

  • Book ahead: fares for Seoul — Chiang Mai 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.
  • Seoul is served by more than one airport — compare fares and travel time to each before you book.
  • The cheapest month to fly to Chiang Mai is usually August — 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 Seoul — Chiang Mai route are operated by 6 airlines; T'way Air runs the most flights (around 34% of all flights). Compare carriers, flight shares and schedules below.

  • T'way AirTW
    5x/week
    WebsiteFleet: 3810M pax/year
    • Direct flight ICN → CNX5x/week
    34.1%Open →
  • Jeju Air7C
    3x/week
    WebsiteFleet: 4213.4M pax/year
    • Direct flight ICN → CNX3x/week
      Duration
      5h 50m
      Days
      MTWTFSS
    18.2%Open →
  • Jin AirLJ
    3x/week
    WebsiteFleet: 3111M pax/year
    • Direct flight ICN → CNX3x/week
      Duration
      5h 25m
      Days
      MTWTFSS
    18.2%Open →
  • Korean AirKE
    2x/week
    WebsiteFleet: 16025M pax/year
    • Direct flight ICN → CNX2x/week
      Duration
      5h 25m
      Days
      MTWTFSS
    11.4%Open →
  • Air BusanBX
    1x/week
    WebsiteFleet: 225.8M pax/year
    • Direct flight ICN → CNX1x/week
    9.1%Open →
  • Eastar JetZE
    1x/week
    WebsiteFleet: 154.4M pax/year
    • Direct flight ICN → CNX1x/week
      Duration
      5h 55m
      Days
      MTWTFSS
    9.1%Open →

Cities and airports on the Seoul — Chiang Mai route

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

Departure

Seoul

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

Chiang Mai

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

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Frequently asked questions about the Seoul — Chiang Mai flight

How long is the flight from Seoul to Chiang Mai?

A nonstop Seoul — Chiang Mai flight takes about 5 h 25 min — the distance between the cities is around 3,425 km.

How far is it from Seoul to Chiang Mai?

The distance from Seoul to Chiang Mai is about 3,425 km, which a nonstop flight covers in around 5 h 25 min.

Are there direct flights from Seoul to Chiang Mai?

Yes, there are nonstop flights Seoul — Chiang Mai — around 44 flights per week.

Which airlines fly from Seoul to Chiang Mai?

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

Which airports do Seoul — Chiang Mai flights use?

Flights from Seoul depart from Incheon International Airport, Gimpo International Airport, and arrive at Chiang Mai 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 Seoul to Chiang Mai?

The price of a Seoul — Chiang Mai ticket depends on your travel date, season and demand: it is usually cheapest to fly in August, and most expensive in May. Tickets typically cost between $70 and $268. Check the current lowest fare and low-price calendar on this page.

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

Flights Seoul — Chiang Mai 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 August. Compare prices by month in the price trend chart on this page.

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

To catch a low fare Seoul — Chiang Mai, 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 August.

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.

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