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.

Tokyo
14:35
Narita International Airport [NRT]
Tue , 20 Jan 2026

Bangkok
00:10
Suvarnabhumi Airport [BKK]
Wed, 21 Jan 2026

Hong Kong
00:05
Hong Kong International Airport [HKG]
Tue , 20 Jan 2026

Tokyo
10:55
Narita International Airport [NRT]
Tue, 20 Jan 2026

Seoul
15:50
Incheon International Airport [ICN]
Tue , 20 Jan 2026

Osaka
17:50
Kansai International Airport [KIX]
Tue, 20 Jan 2026

Tokyo
18:55
Narita International Airport [NRT]
Tue , 20 Jan 2026

Osaka
09:55
Kansai International Airport [KIX]
Wed, 21 Jan 2026

Bangkok
01:30
Suvarnabhumi Airport [BKK]
Tue , 20 Jan 2026

Hong Kong
22:05
Hong Kong International Airport [HKG]
Tue, 20 Jan 2026

Singapore
23:00
Singapore Changi Airport [SIN]
Tue , 20 Jan 2026

Tokyo
10:55
Narita International Airport [NRT]
Wed, 21 Jan 2026

Sydney
12:15
Sydney Kingsford Smith International Airport [SYD]
Tue , 20 Jan 2026

Bangkok
00:10
Suvarnabhumi Airport [BKK]
Thu, 22 Jan 2026

Bangkok
01:30
Suvarnabhumi Airport [BKK]
Tue , 20 Jan 2026

Seoul
09:00
Incheon International Airport [ICN]
Tue, 20 Jan 2026

Hong Kong
00:05
Hong Kong International Airport [HKG]
Tue , 20 Jan 2026

Singapore
21:25
Singapore Changi Airport [SIN]
Tue, 20 Jan 2026

Fiumicino
19:00
Fiumicino Leonardo Da Vinci International Airport [FCO]
Tue , 20 Jan 2026

Bangkok
00:10
Suvarnabhumi Airport [BKK]
Thu, 22 Jan 2026

Sydney
12:15
Sydney Kingsford Smith International Airport [SYD]
Tue , 20 Jan 2026

Tokyo
17:55
Narita International Airport [NRT]
Wed, 21 Jan 2026