# SUM Air Co.

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/sum-air-co

- Industry: Transportation Services
- Headquarters: Seoul, South Korea
- Website: www.sumair.kr/
- Latest round: Series A (Oct 22, 2025)
- Investors on record: 1

## About

Founded in 2022, and based in Seoul, South Korea, SUM Air Co., Ltd. operates as a transportation services that is into airlines and travel. As of June 2025, Yongduck Choi operates as a Chief Executive Officer (CEO) of the firm. In Ocotober 2025, SUM Air Co., Ltd. raised an undisclosed amount of venture funding from new investor Muirwoods Ventures.

SUM Air is a South Korean aviation company and a subsidiary of MAAF, focused on connecting travelers to Korea’s remote and scenic islands such as Ulleungdo, Heuksando, and Baengnyeongdo. The company operates using turboprop aircraft capable of landing on short runways, enabling quick and efficient travel to these destinations often within just one hour.

The investment in October 2025 will allow the company to bring its business to the island regions of the country by acquiring an air operator's certification and the introducing a second aircraft.

## Funding rounds

- Series A, Oct 22, 2025 — Muirwoods Ventures

## Investors

- Muirwoods Ventures (https://capitalatlas.ai/funds/muirwoods-ventures) — Series A