SUM Air
SUM Air is a South Korean regional airline based in Gangseo District, Seoul, South Korea.
In February 2025 the airline received a air carrier licence from Ministry of Land, Infrastructure and Transport. The airline will operate ATR 72-600
Destinations
SUM Air currently operates services to and from China and Japan.| Country | City | Airport | Notes | Refs |
| China | Qingdao | Qingdao Jiaodong International Airport | ||
| China | Weihai | Weihai Dashuipo International Airport | ||
| China | Yantai | Yantai Penglai International Airport |