is by far the best month, wherein you can get cheapest flights for Cheju to Seoul. Meanwhile, is perceived as the expensive month due to the varying factors. That’s why it’s highly advised to make advanced online flight booking to save huge amounts of money.
Disclaimer - All the mentioned fares were found within last 48 hrs. The displayed fares are based on historical data and are subject to change. The fares cannot be guaranteed at the time of booking.

Seoul
20:35
Incheon International Airport [ICN]
Tue , 05 May 2026

Danang
23:25
Da Nang International Airport [DAD]
Tue, 05 May 2026

Seoul
18:30
Incheon International Airport [ICN]
Wed , 06 May 2026

Chiang Mai
22:40
Chiang Mai International Airport [CNX]
Wed, 06 May 2026

Seoul
09:20
Incheon International Airport [ICN]
Tue , 05 May 2026

Sapporo
11:50
New Chitose Airport [CTS]
Tue, 05 May 2026

Seoul
09:15
Incheon International Airport [ICN]
Wed , 06 May 2026

Osaka
11:10
Kansai International Airport [KIX]
Wed, 06 May 2026

Seoul
07:25
Incheon International Airport [ICN]
Tue , 05 May 2026

Tokyo
09:50
Narita International Airport [NRT]
Tue, 05 May 2026

Busan
13:30
Gimhae International Airport [PUS]
Tue , 05 May 2026

Osaka
15:00
Kansai International Airport [KIX]
Tue, 05 May 2026

Osaka
16:00
Kansai International Airport [KIX]
Tue , 05 May 2026

Busan
18:00
Gimhae International Airport [PUS]
Tue, 05 May 2026

Shanghai
00:30
Shanghai Pudong International Airport [PVG]
Wed , 06 May 2026

Seoul
03:30
Incheon International Airport [ICN]
Wed, 06 May 2026

Chiang Mai
23:55
Chiang Mai International Airport [CNX]
Wed , 06 May 2026

Seoul
07:10
Incheon International Airport [ICN]
Thu, 07 May 2026

Tokyo
10:50
Narita International Airport [NRT]
Tue , 05 May 2026

Seoul
13:30
Incheon International Airport [ICN]
Tue, 05 May 2026

Seoul
14:10
Incheon International Airport [ICN]
Tue , 05 May 2026

Tokyo
16:30
Narita International Airport [NRT]
Tue, 05 May 2026