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Cheap Flights from Chiang Mai to Seoul

Browse current best options from Chiang Mai. Become a member to unlock all deals and get alerts when new deals appear.

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Chiang Mai

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Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from Chiang Mai to Seoul

Explore current cheapest deals departing from Chiang Mai to Seoul

Round trip

Sort by: Cheapest

August 23 - August 30

Cheapest

CNX - Seoul

$254

$244

Round trip

August 23 - August 27

Cheapest

Best

CNX - Seoul

$266

$244

Round trip

August 23 - August 26

Cheapest

Best

CNX - Seoul

$266

$244

Round trip

August 23 - August 29

Cheapest

CNX - Seoul

$254

$244

Round trip

August 20 - August 30

Cheapest

Earliest

CNX - Seoul

$237

$244

Round trip

August 20 - August 27

Cheapest

Earliest

CNX - Seoul

$254

$244

Round trip

August 20 - August 26

Cheapest

Earliest

CNX - Seoul

$254

$244

Round trip

August 20 - August 22

Cheapest

Best

Earliest

CNX - Seoul

$268

$244

Round trip

August 20 - August 29

Cheapest

Earliest

CNX - Seoul

$244

Round trip

August 20 - August 23

Cheapest

Best

Earliest

CNX - Seoul

$266

$244

Round trip

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Route Intelligence — 486,190 Searches this Week

Insights for flights from Chiang Mai to Seoul

For travelers seeking cheap flights from Chiang Mai to Seoul, the data indicates that January is typically the most affordable month to fly, with a median fare of $229. Other budget-friendly options include October, with a median fare of $237, and August, where the median fare is $246. Planning your trip during these months can lead to more favorable prices.

Right now, fares from Chiang Mai to Seoul typically range from $244 to $401, with a median of $297. Current fares are above the typical level for this route. Currently, 0% of recent fares are classified as a good price, suggesting that finding exceptional deals may require flexibility or waiting for new price drops. New deals appear almost daily, so setting up a price alert could be beneficial.

When considering flights from Chiang Mai to Seoul, most itineraries connect at least once, with direct flights accounting for 23.1% of recent fares. For itineraries that include connections, the typical number of stopovers is 2. This means that while non-stop options exist, a significant portion of journeys will involve at least one transfer.

A typical journey from Chiang Mai to Seoul takes approximately 12h 15m, including connections. This duration reflects the common travel experience on this route, which often involves layovers given the prevalence of connecting flights. The overall travel time can vary based on the number and length of stopovers.

The distance between Chiang Mai and Seoul is 3382 kilometers, classifying this route as a medium-haul flight. This distance typically translates to a journey that is longer than short regional hops but shorter than intercontinental travel, often involving a single long flight or a combination of shorter segments.

How much is a round trip from Chiang Mai to Seoul

Regular price: $209 - $375

Prices for flights from Chiang Mai to Seoul are currently within the regular range.

The regular price range for this route is between $209 and $375. The current lowest deal is $244 with Arcus-Air Logistic, for travel from August 23 to August 30.

now $244

Low $209

High $375

The cheapest time to fly from Chiang Mai to Seoul

The cheapest month to fly from Chiang Mai to Seoul is January, with a median price of $229. The most expensive month is September, with a median price of $552. Prices are generally lower from January to December.

January

Cheapest

Flights from $229

September

Most Expensive

Flights from $552

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Chiang Mai to Seoul

Arcus-Air Logistic

Last-minute flights going from Chiang Mai to Seoul

Thu, Jul 2

⌛ Last-Minute

CNX - Seoul

Chiang Mai (CNX) - Seoul (ICN)

Coyne Aviation

$246

$341

One-way

Thu, Jul 2

⌛ Last-Minute

CNX - Seoul

Chiang Mai (CNX) - Seoul (ICN)

Coyne Aviation

$283

$378

One-way

Sun, Jul 5

⌛ Last-Minute

CNX - Seoul

Chiang Mai (CNX) - Seoul (ICN)

Coyne Aviation

$264

$323

One-way

Sun, Jul 5

⌛ Last-Minute

CNX - Seoul

Chiang Mai (CNX) - Seoul (ICN)

Coyne Aviation

$227

$323

One-way

Mon, Jul 6

⌛ Last-Minute

CNX - Seoul

Chiang Mai (CNX) - Seoul (ICN)

Air Busan

$309

$305

One-way

Wed, Jul 8

⌛ Last-Minute

CNX - Seoul

Chiang Mai (CNX) - Seoul (ICN)

Arcus-Air Logistic

$308

$328

One-way

Biggest price drops on these dates for flights from Chiang Mai to Seoul

1 night

Aug 19 - Aug 20

$269 → $244

2 nights

Aug 20 - Aug 22

$268 → $244

1 night

Aug 26 - Aug 27

$268 → $244

2 nights

Aug 27 - Aug 29

$268 → $244

Popular Airports to fly from Chiang Mai to Seoul

Chiang Mai - Seoul route insights

💸 Price insights

Recent fares are above the typical level.

Recent fares from Chiang Mai to Seoul are above the typical level at $244.

📅 Best time to fly

January is historically the cheapest month to fly.

Historically, January is the cheapest month to fly, with a median price of $229.

⏱️ Flight duration

The typical flight duration is 12h 15m.

Flights from Chiang Mai to Seoul typically take 12h 15m, including layovers.

✈️ Airlines & availability

Connecting flights are dominant on this route.

Connecting flights are dominant, with 23.1% of deals being direct flights.

🏆 Airline highlight

Arcus-Air Logistic offers direct flights.

Arcus-Air Logistic has offered direct flights from Chiang Mai to Seoul historically.

🎯 Booking tip

Deals appear frequently for this route.

Historically, deals for flights from Chiang Mai to Seoul appear frequently.

Chiang Mai main airports to depart from

Chiang Mai International (CNX)

Cheapest

Chiang Mai International Airport is a convenient and affordable option for flights to Seoul.

📍 ~5 km from city center (reachable by car)

💸 Flights from ~$244

Seoul main airports to arrive at

Incheon International (ICN)

Cheapest

Incheon International Airport is a good arrival option for flights from Chiang Mai to Seoul.

📍 ~40 km from city center (reachable by car, train, and bus)

💸 Flights from ~$244

Gimpo International (GMP)

Gimpo International Airport is an alternative arrival option for flights from Chiang Mai to Seoul.

📍 ~20 km from city center (reachable by car, train, and bus)

💸 Flights from ~$425

Airports nearby Seoul used as alternative

Cheongju International (CJJ)

Cheongju International is a practical alternative for Seoul, offering international flights and good transport links.

📍 ~110 km from Seoul (reachable by express bus and rail services)

💸 Flights from ~$418

Gimhae International (PUS)

Cheapest

Gimhae International is a major international gateway and a reliable alternative for flights to the region.

📍 ~320 km from Seoul (reachable by KTX high-speed rail)

💸 Flights from ~$292

Daegu International (TAE)

Daegu International offers a good selection of international regional flights and efficient terminal processing.

📍 ~240 km from Seoul (reachable by high-speed rail)

💸 Flights from ~$383

Wonju (WJU)

Wonju is geographically the closest candidate airport to Seoul, useful for specific domestic connections.

📍 ~90 km from Seoul

💸 Flights from ~$509

Gwangju (KWJ)

Gwangju is a major regional airport with KTX connectivity, an alternative for domestic travel.

📍 ~270 km from Seoul (reachable by KTX)

💸 Flights from ~$517

Business & First Class Flight Deals to Seoul

71% AI deal score

$1,514

From CNX

Elite

Jul 20

Seoul, South Korea

71% AI deal score

$1,522

$1,514

Save $8

From CNX

Elite

Jul 20

Seoul, South Korea

71% AI deal score

$1,514

From CNX

Elite

Jul 30

Seoul, South Korea

71% AI deal score

Seoul, South Korea

67% AI deal score

$2,525

Frequently Asked Questions About Flights to Seoul

Historically, the optimal booking window for flights from Chiang Mai to Seoul is typically 28-59 days before departure. During this period, the average price for a ticket is around $260. Prices tend to be higher for last-minute bookings, with flights purchased 0-6 days out averaging $453. Conversely, booking more than 60 days in advance also sees higher average prices, at approximately $490.

Across the trailing quarter, a good price for a flight from Chiang Mai to Seoul is considered to be $244 or less. The median price for this route was $297. Prices can range significantly, with 75% of tickets historically costing $401 or less. This threshold represents a competitive price point for travelers.

Historically, the cheapest months to fly from Chiang Mai to Seoul are January, October, and August. January typically sees a median price of $229, while October has a median of $237. August also offers competitive pricing, with a median of $246. The annual median price for this route is $297, indicating these months are notably more affordable.

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