Your next trip, last seen at €126
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
- Lowest observed
- €126, departing 20 Nov 2026 (Last checked: 10 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 44Check live prices for this route
- Airlines seen
- Korean Air, Air Busan, Air China, Eastar Jet, Jeju Air, Thai AirAsia
- Reported fastest flight
- 4h 45m
- Non-stop
- Yes
About this route
Explore the fares we observed from Chiang Mai to Seoul. Prices move often, so pick your dates to see the latest options.
- Route distance
- 3,426 km
- Reported fastest flight
- 4h 45m
- Airlines seen
- Korean Air, Air Busan, Air China, Eastar Jet, Jeju Air, Thai AirAsia
- Alternative airports
- GMP
Route-level information; individual journeys vary.
Published schedules report non-stop service with Korean Air. Check current timetables.
A clearer picture of your fare
Airport to city: straight-line distance
- Chiang Mai International Airport (CNX) → Chiang Mai, city gazetteer reference point (18.7953, 98.9620): ≈ 3 km.
- Seoul Gimpo International Airport (GMP) → Seoul, city gazetteer reference point (37.5665, 126.9780): ≈ 17 km.
- Incheon International Airport (ICN) → Seoul, city gazetteer reference point (37.5665, 126.9780): ≈ 48 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
Cheapest month from Chiang Mai to Seoul: November 2026, from €126 (checked 10 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| October 2026 | €157 | 13 |
| November 2026 | €126 | 20 |
| January 2027 | €192 | 11 |
Lowest fare by day of the week
Cheapest day of the week from Chiang Mai to Seoul: Friday, from €126 (checked 10 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €158 | 5 |
| Tuesday | €158 | 6 |
| Wednesday | €166 | 7 |
| Thursday | €151 | 7 |
| Friday | €126 | 7 |
| Saturday | €158 | 6 |
| Sunday | €132 | 6 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from Chiang Mai to Seoul by days until departure (31 to 60 days): €126 (checked 10 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 0 to 7 days | €166 | 8 |
| 8 to 30 days | €132 | 10 |
| 31 to 60 days | €126 | 15 |
| 61 days or more | €192 | 11 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Frequently asked
How much is a flight from Chiang Mai to Seoul?
The lowest fare we have observed is €126, found on 10 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Chiang Mai to Seoul?
Cheapest month from Chiang Mai to Seoul: November 2026, from €126 (checked 10 Oct 2026).
Are there direct flights from Chiang Mai to Seoul?
Yes. We have seen non-stop flights on this route, flown by Korean Air.
Which airlines fly from Chiang Mai to Seoul?
These are the carriers we have seen on the route: Korean Air, Air Busan, Air China, Eastar Jet, Jeju Air, Thai AirAsia.
How many of the observed Chiang Mai to Seoul fares were non-stop?
39 of the 47 fares we observed were non-stop; the rest included at least one stop. That describes our observations, not every flight that operates.
Which day of the week is cheapest from Chiang Mai to Seoul?
Cheapest day of the week from Chiang Mai to Seoul: Friday, from €126 (checked 10 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
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Recently observed fares. Prices may change.
Last checked: 10 Oct 2026