Cheap flights from Seoul to Chiang Mai (ICN–CNX)
South Korea
Thailand
Air Busan, Eastar Jet, Jeju Air and Jin Air fly Seoul to Chiang Mai (ICN–CNX) nonstop, a great-circle distance of 3,380 km (2,100 mi).
- From
- ICN
- Seoul
- To
- CNX
- Chiang Mai
- Nonstop
- Yes · 4 airlines
- Airlines
- BX · ZE · 7C · LJ
- Cheapest fare found
- ₩174,860 one-way
- Distance
- 3,380 km (2,100 mi)
- Time difference
- Chiang Mai 2 hours behind
- Most flights
- Jin Air
- Time in the air
- 4h 50m · 4h 49m back
- On time (Touchdown Index)
- 80.8%
- Flights a week
- BX ~2 · ZE ~3 · 7C ~4 · LJ ~6
- Aircraft seen
- Boeing 737 Max 8 · Boeing 737-800 · Airbus A321neo
Network data imported from airport and airline sources:· How we verify
Seoul to Chiang Mai fares by month
Cheapest one-way fare found: ₩174,860 for October 2026 on Jeju Air, nonstop. Nonstop from ₩174,860.
- Oct ’26₩174,860
- Nov ’26₩175,081
- Dec ’26₩255,813
- Feb ’27₩270,832nonstop ₩309,272
- Sept ’27₩222,743
Cheapest one-way fares per month of departure in the Aviasales price cache, found . Fares change by the hour: the live fare is shown when you search.
When to fly ICN–CNX
For Seoul Incheon (ICN) to Chiang Mai (CNX), October 2026 had the lowest fare found (₩174,860). Set your watch 2 hours back on landing at CNX.
Seoul to Chiang Mai: frequently asked questions
Fares: Aviasales price cache, 11 October 2026; tracked flights between 6 September and 3 October 2026, from public ADS-B data.
How much is a flight from Seoul Incheon (ICN) to Chiang Mai (CNX)?
From ₩174,860 one-way, the cheapest fare found for October 2026 on Jeju Air, nonstop; nonstop from ₩174,860 (found 11 October 2026).
How long is the ICN–CNX flight?
4h 50m wheels-up to wheels-down, the median of 61 tracked flights; CNX–ICN took 4h 49m.
Which airlines fly ICN–CNX direct?
Air Busan, Eastar Jet, Jeju Air and Jin Air.
What is the cheapest month to fly ICN–CNX?
October 2026, at ₩174,860; the dearest month found was ₩270,832.
What is the time difference between Seoul and Chiang Mai?
Chiang Mai is 2 hours behind Seoul: a ICN departure at noon is 10:00 local time in CNX.
Is ICN–CNX usually on time?
80.8% of 120 ICN–CNX flights landed within 15 minutes of their usual time; 5% were over an hour late.
How many ICN–CNX flights a week?
Air Busan 2, Eastar Jet 3, Jeju Air 4 and Jin Air 6 each way.
What aircraft fly ICN–CNX?
Boeing 737 Max 8, Boeing 737-800 and Airbus A321neo.
Chiang Mai to Seoul: the return flight (CNX–ICN)
Air Busan, Eastar Jet, Jeju Air, Jin Air and Korean Air fly CNX–ICN nonstop.
The return takes 4h 49m in the air (median of 63 tracked flights).
| Airline | ICN → CNX | CNX → ICN |
|---|---|---|
| Air Busan | Nonstop | Nonstop |
| Eastar Jet | Nonstop | Nonstop |
| Jeju Air | Nonstop | Nonstop |
| Jin Air | Nonstop | Nonstop |
| Korean Air | — | Nonstop |
Seoul to Chiang Mai: compare the whole itinerary
ICN–CNX identifies Seoul Incheon to Chiang Mai. Use the airport codes when searching to keep these results separate from Seoul to Bangkok flights.
If a connecting option goes through Bangkok, inspect both airport codes on the itinerary. Check baggage transfer and whether all flights are on one ticket before choosing a shorter layover.
How should I plan my Chiang Mai arrival?
Start with the local arrival date and time on the chosen itinerary. Then compare accommodation check-in and airport pickup arrangements, leaving room for delays before a prepaid onward activity.
See the ICN–CNX route map · Check schedules and booking options
Airlines flying ICN–CNX nonstop
| Airline | Usually takes off (ICN time) | Type | Alliance | Notes |
|---|---|---|---|---|
 Air Busan BX | 20:10–20:33 | full-service | Star Alliance | Seasonal |
 Eastar Jet ZE | 18:37–18:56 | full-service | — | — |
 Jeju Air 7C | 18:18–18:34 | low-cost | — | — |
| Jin Air LJ | 17:39–18:54 | low-cost | — | — |
One-stop alternatives to flying ICN–CNX nonstop
One airline on both legs; check it's sold as one ticket.
- Via Shenzhen (SZX) with China Southern Airlines: 3,650 km (2,270 mi) flown, 8% further than nonstop.
- Via Hong Kong (HKG) with
HK Express: 3,670 km (2,280 mi) flown, 9% further than nonstop. - Via Taipei (TPE) with
China Airlines and EVA Air: 3,860 km (2,400 mi) flown, 14% further than nonstop. - Via Yangon (RGN) with Myanmar Airways International: 4,110 km (2,550 mi) flown, 21% further than nonstop.
- Via Bangkok (DMK) with
Thai AirAsia: 4,230 km (2,630 mi) flown, 25% further than nonstop.
ICN–CNX route map
More from Seoul and Chiang Mai
Other arrivals in Thailand
Also nonstop from ICN, nearest to CNX first (straight-line distance):
- Bangkok (DMK) airport guide · 568 km (353 mi) from CNX
- ICN–BKK: Bangkok · 597 km (371 mi) from CNX
- ICN–HKT: Phuket · 1,190 km (737 mi) from CNX
Explore the airlines’ route maps
Departure
Incheon International Airport
Incheon (ICN), Seoul. In our data, 83 airlines fly nonstop from ICN to 157 destinations.
View ICN airport guide →Arrival
Chiang Mai International Airport
2 ways into Chiang Mai, fastest from 15 min:
- Airport taxi (fixed fare) 15–25 min
- Grab / Bolt 15–25 min
Check ICN–CNX schedules and fares
Choose your travel dates to confirm availability. Compare the operating airline, total journey time, baggage and change conditions before you book.
Airline links open the airline website; enter ICN and CNX and your dates. Some outbound links may earn us a commission, at no extra cost to you. How we earn.
Weather in Chiang Mai by month
Onward from Chiang Mai
Places you can't fly to nonstop from ICN, but can from CNX — for a stopover or a second leg.
Related routes
Sources
- en.wikipedia.org — airlines and destinations, checked 2026-10-01
- en.wikipedia.org — airlines and destinations, checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
Flight tracking: adsb.lol community ADS-B data (CC0), 6 September – 3 October 2026. Times are median wheels-up to wheels-down; add taxiing for gate-to-gate.
Report a change — seen something different at the airport or on the airline's site? We re-check and log corrections publicly.