Flights from Seoul to Chiang Mai from $302

Compare All SEL to CNX Flights

Prices are per person for one-way travel. Click “Book” to complete your reservation on the partner site.

1 of 1 flight

Airline	Schedule	Stops	Duration	Price
BX BX · 7475	19:55 SEL 07:15 CNX	0 stop(s)	11h 20m	$302 Best	Book →

Airport Information

Key details about departure and arrival airports for this route

CNX

Chiang Mai International Airport

City: Chiang Mai
Country: TH
Type: Large Airport
Elevation: 1,036 ft

CNX Airport Guide →

Tips for Seoul to Chiang Mai Flights

Save money and travel smarter with these route-specific tips

📅 When to Book

Book SEL–CNX flights 6–8 weeks in advance for the best prices. Last-minute fares are typically 40–60% more expensive on this route.

💰 Price Trends

The average fare is $302, but prices as low as $302 are available.

✈ Direct vs Connecting

No direct flights currently listed. Consider flexible dates or nearby airports for better connections.

📍 Flexible Dates

Flying midweek (Tuesday–Thursday) on SEL–CNX is typically 15–30% cheaper. Use our price comparison to spot the best day to fly.

Top Hotels in Chiang Mai

Book accommodation at your destination — top-rated stays near CNX airport

บ้านมะเดื่อทอง Ban Maduea Thong

Chiang Mai, 4★

10.0 $24/night

Hahn Haven | Courtyard Pool Villa | Chiangmai

Chiang Mai

10.0 Check Price

KanVeLa Pool Villa • 15 mins City•4 Beds•Jacuzzi

Chiang Mai

10.0 Check Price

Sage&Wood Stay•3 mins Nimman•3 Beds

Chiang Mai

10.0 Check Price

Frequently Asked Questions

Everything you need to know about flying SEL to CNX

What is the cheapest flight from Seoul to Chiang Mai?

The cheapest flight from Seoul (SEL) to Chiang Mai (CNX) currently starts at $302 with BX. Prices are updated regularly and may vary by date and availability.

How many airlines fly from SEL to CNX?

We found 1 airline(s) operating on the SEL–CNX route, including BX.

Are there direct flights from Seoul to Chiang Mai?

No direct flights are currently listed on this route. All available options involve at least one stop. Consider flexible dates or nearby airports for better connection options.

What is the average flight price on this route?

The average flight price from Seoul to Chiang Mai is approximately $302. Prices range from $302 to $302 depending on airline, time, and class.

How long is the flight from SEL to CNX?

The average flight duration from Seoul to Chiang Mai is approximately 11 hours 20 minutes. Direct flights are typically shorter than connecting options.

What is the baggage allowance on SEL–CNX flights?

Baggage allowance varies by airline and fare class. Most economy fares on this route include 1 carry-on (7–8 kg) and 1 checked bag (20–23 kg). Always confirm baggage rules on the airline's site at booking — low-cost carriers may charge for checked bags.