฿3,716 Find Cheap Flights from Chiang Mai to Seoul – Compare and Save

5 airlines operate flights between Chiang Mai and Seoul. The airlines offering direct flights on this route include:

• Jin Air
• Jeju Air
• Eastar Jet
• Air Busan
• Korean Air

Flights from Chiang Mai to Seoul usually depart from Chiang Mai (CNX) and may arrive at several airports in Seoul area, including Seoul Gimpo Intl (GMP) and Incheon Intl (ICN).

Here are some options for this route, based on selected ticket types and cabin classes:

• Jeju Air: a cabin bag and a checked bag in Economy class
• Eastar Jet: a cabin bag and a checked bag in Economy class
• Jin Air: a cabin bag and a checked bag in Economy class

Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

Only Economy class is available on flights from Chiang Mai to Seoul.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average ฿6,246 return via Kuala Lumpur Intl (KUL), compared with ฿12,747 for direct.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge ฿743–฿3,288 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

One-stop flights from Chiang Mai to Seoul most commonly connect through:

• Bangkok Don Mueang Intl (DMK) – 56% of one-stop connections
• Bangkok Suvarnabhumi (BKK) – 22% of one-stop connections
• Guangzhou Baiyun (CAN) – 6% of one-stop connections
• Hong Kong Intl (HKG) – 3% of one-stop connections

Bangkok Don Mueang Intl (DMK) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 30% on the Chiang Mai to Seoul route. Thursday is the cheapest departure day at ฿10,063 return on average, while Friday is the most expensive at ฿14,239, a difference of ฿4,176. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Night is the busiest departure period on Chiang Mai to Seoul flights, with 100% leaving in that window. Morning departures account for 0%, Afternoon flights for 0%, and Evening flights for 0%.

Some of the most popular sights in Seoul are Hongdae Area, Dongdaemun History & Culture Park Subway Station (Line 2 & 4 & 5), and Myeong-dong Subway Station. These are among the most viewed places in Seoul on KAYAK.

These are the earliest and latest flight times available from Chiang Mai to Seoul:

• Earliest: departs at 00:10 and lands at 05:22
• Latest: departs at 23:55 and lands at 05:07.

The flight takes about 5h 12m.

Last-minute fares on this route (booked within 2 weeks of departure) run 32% above the route average of ฿12,592. Book 19 weeks before departure for the lowest fares.

A direct flight from Chiang Mai to Seoul takes 5h 12m, covering 5,512 km.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about ฿6,708 to ฿63,808. That means the highest observed fare was about 10x higher than the lowest one.

One-way fares from Chiang Mai to Seoul are currently lower than usual. Average one-way flight prices are about ฿3,861, which is 44% below the typical average for this route.

Flying via Bangkok Suvarnabhumi (BKK) gives the shortest average 1-stop total travel time of 8h 56m, compared to 9h 09m via Guangzhou Baiyun (CAN) and 9h 52m via Bangkok Don Mueang Intl (DMK).

Seoul is 2 hours ahead of Chiang Mai (Korean Time vs Indochina Time). Plan for the time shift when scheduling connections or first-day activities.

Since Seoul is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
Near Incheon Intl Airport (ICN) – daily rates from around ฿396:

· WECAR
· Wheego
· Yesaway
· Alamo
· Enterprise Rent-A-Car

Near Seoul Gimpo Intl Airport (GMP) – daily rates from around ฿380:

· Yesaway
· Hi Rent
· Wheego
· Europcar
· Bella Jeju

Return flights from Chiang Mai to Seoul range from ฿10,373 to ฿15,244, with an average of ฿12,592 over the past 12 months. Anything below ฿10,373 counts as a good deal.