Airline: Eastar Jet
- Bangkok - Seoul
- Busan - Seoul
- Busan - Taipei
- Busan - Yanji
- Cheongju - Dayong
- Cheongju - Harbin
- Cheongju - Jeju
- Cheongju - Phu Quoc
- Cheongju - Shanghai
- Cheongju - Shenyang
- Cheongju - Yanji
- Chiang Mai - Seoul
- Da Nang - Seoul
- Dayong - Cheongju
- Fukuoka - Seoul
- Gunsan - Jeju
- Harbin - Cheongju
- Hong Kong - Seoul
- Jeju - Busan
- Jeju - Cheongju
- Jeju - Gunsan
- Jeju - Seoul
- Jeju - Taipei
- Jinan - Seoul
- Kota Kinabalu - Seoul
- Nha Trang - Seoul
- Okinawa - Seoul
- Osaka - Seoul
- Phu Quoc - Cheongju
- Phu Quoc - Seoul
- Sapporo - Seoul
- Seoul - Bangkok
- Seoul - Busan
- Seoul - Chiang Mai
- Seoul - Da Nang
- Seoul - Fukuoka
- Seoul - Hong Kong
- Seoul - Jeju
- Seoul - Jinan
- Seoul - Kota Kinabalu
- Seoul - Nha Trang
- Seoul - Okinawa
- Seoul - Osaka
- Seoul - Phu Quoc
- Seoul - Sapporo
- Seoul - Shanghai
- Seoul - Taipei
- Seoul - Tokyo
- Seoul - Zhengzhou
- Shanghai - Cheongju
- Shanghai - Seoul
- Shenyang - Cheongju
- Taipei - Busan
- Taipei - Jeju
- Taipei - Seoul
- Tokyo - Seoul
- Yanji - Busan
- Yanji - Cheongju
- Zhengzhou - Seoul