Default HTG hotel image

Flights to Koptolgae, Yesan from NT$3,398

View NT$2,327 flight on Wed, 2026/7/22Opens in a new window

Popular airlines

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 45% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to Koptolgae?

Prices were available within the past 7 days and start at NT$2,327 for one-way flights and NT$3,398 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Peach
Tue, Sep 1 - Mon, Sep 7
HND
Tokyo
ICN
Seoul
NT$7,412 Roundtrip, found 1 day ago
NT$7,412
Roundtrip
found 1 day ago
Select Peach flight, departing Tue, Sep 1 from Tokyo to Seoul, returning Mon, Sep 7, priced at NT$7,412 found 1 day ago
Korean Air
Tue, Jul 21 - Fri, Jul 24
HND
Tokyo
ICN
Seoul
NT$9,905 Roundtrip, found 4 hours ago
NT$9,905
Roundtrip
found 4 hours ago
Select Korean Air flight, departing Tue, Jul 21 from Tokyo to Seoul, returning Fri, Jul 24, priced at NT$9,905 found 4 hours ago
Asiana Airlines
Thu, Jul 2 - Mon, Jul 6
HND
Tokyo
ICN
Seoul
NT$9,985 Roundtrip, found 1 hour ago
NT$9,985
Roundtrip
found 1 hour ago
Select Asiana Airlines flight, departing Thu, Jul 2 from Tokyo to Seoul, returning Mon, Jul 6, priced at NT$9,985 found 1 hour ago
Japan Airlines
Thu, Jul 2 - Mon, Jul 6
HND
Tokyo
GMP
Seoul
NT$12,922 Roundtrip, found 1 hour ago
NT$12,922
Roundtrip
found 1 hour ago
Select Japan Airlines flight, departing Thu, Jul 2 from Tokyo to Seoul, returning Mon, Jul 6, priced at NT$12,922 found 1 hour ago
All Nippon Airways
Tue, Jul 21 - Fri, Jul 24
HND
Tokyo
GMP
Seoul
NT$13,242 Roundtrip, found 4 hours ago
NT$13,242
Roundtrip
found 4 hours ago
Select All Nippon Airways flight, departing Tue, Jul 21 from Tokyo to Seoul, returning Fri, Jul 24, priced at NT$13,242 found 4 hours ago

Find the cheapest month to fly from Columbus (CMH) to Seoul (ICN)

September is typically the cheapest month to fly

From NT$37,362 - NT$53,065 per traveler.

Travel information

Destination airport
Incheon Intl.
Destination airport IATA code
ICN
Destination city name
Seoul
Roundtrip price
NT$3,397

Trending flights to Koptolgae

Prices were available within the past 7 days and start at NT$2,327 for one-way flights and NT$3,398 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tigerair Taiwan
Tue, Jul 28 - Wed, Aug 12
TPE
Taipei
ICN
Seoul
NT$3,398 Roundtrip, found 1 hour ago
NT$3,398
Roundtrip
found 1 hour ago
Select Tigerair Taiwan flight, departing Tue, Jul 28 from Taipei to Seoul, returning Wed, Aug 12, priced at NT$3,398 found 1 hour ago
*Available to Expedia members.