Your next trip, last seen at €124
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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
- €124, departing 14 Oct 2026 (Last checked: 6 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 21Check live prices for this route
- Airlines seen
- Air Busan, China Eastern, Eastar Jet, HK Express, Jeju Air, Jin Air +2 more
- Reported fastest flight
- 5h 25m
- Non-stop
- Yes
About this route
Explore the fares we observed from Seoul to Chiang Mai. Prices move often, so pick your dates to see the latest options.
- Route distance
- 3,426 km
- Reported fastest flight
- 5h 25m
- Airlines seen
- Air Busan, China Eastern, Eastar Jet, HK Express, Jeju Air, Jin Air +2 more
- 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
- 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.
- Chiang Mai International Airport (CNX) → Chiang Mai, city gazetteer reference point (18.7953, 98.9620): ≈ 3 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 Seoul to Chiang Mai: October 2026, from €124 (checked 6 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| October 2026 | €124 | 3 |
| November 2026 | €131 | 6 |
| December 2026 | €176 | 12 |
Lowest fare by day of the week
Cheapest day of the week from Seoul to Chiang Mai: Wednesday, from €124 (checked 6 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €218 | 3 |
| Tuesday | €131 | 4 |
| Wednesday | €124 | 4 |
| Saturday | €135 | 3 |
| Sunday | €137 | 3 |
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 Seoul to Chiang Mai by days until departure (8 to 30 days): €131 (checked 6 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 8 to 30 days | €131 | 4 |
| 31 to 60 days | €135 | 3 |
| 61 days or more | €176 | 12 |
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 Seoul to Chiang Mai?
The lowest fare we have observed is €124, found on 6 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Seoul to Chiang Mai?
Cheapest month from Seoul to Chiang Mai: October 2026, from €124 (checked 6 Oct 2026).
Are there direct flights from Seoul to Chiang Mai?
Yes. We have seen non-stop flights on this route, flown by Korean Air.
Which airlines fly from Seoul to Chiang Mai?
These are the carriers we have seen on the route: Air Busan, China Eastern, Eastar Jet, HK Express, Jeju Air, Jin Air +2 more.
How many of the observed Seoul to Chiang Mai fares were non-stop?
23 of the 26 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 Seoul to Chiang Mai?
Cheapest day of the week from Seoul to Chiang Mai: Wednesday, from €124 (checked 6 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: 6 Oct 2026