# SUM Air: Airlines/aviation, South Korea

> SUM Air: SUM Air is a South Korean regional airline based in Seoul, established in 2022 as a subsidiary of MAAF. Based in South Korea.

Source: https://millionrounds.com/startup/sum-air (Millionrounds; every figure on the page links to its filing or article)

South Korea · [Airlines/aviation startup](https://millionrounds.com/companies)

# SUM Air

SUM Air is a South Korean regional airline based in Seoul, established in 2022 as a subsidiary of MAAF.

Funding reported Last round: Venture (Round not Specified)

Airlines/aviation South Korea

Company summary

- **Founded:** - not reported
- **Team:** 13 11 to 50 people
- **Funding reported:** - none reported
- **Last round:** Venture (Round not Specified) Jun 2025

How sure we are

- ✓ **Listed** We know it exists and what it does
- 2 **Funding reported** A company dataset reports a raise
- 3 **Observed** A filing or a dated announcement confirms a round

No round for SUM Air has been confirmed by a filing or an announcement yet, so nothing here counts toward an investor's record. [How we decide](https://millionrounds.com/methodology)

## About SUM Air

SUM Air is a South Korean regional airline based in Seoul, established in 2022 as a subsidiary of MAAF.

The airline focuses on connecting underserved islands, remote regions, and regional destinations using turboprop aircraft. It received its air carrier license in February 2025 and began commercial operations in March 2026 with a leased ATR 72-600 aircraft. The airline operates a fleet of one ATR 72-600 turboprop, with plans to expand its fleet through a purchase agreement for eight additional aircraft. SUM Air aims to enhance regional mobility and provide domestic connectivity through a hub-and-spoke model. Planned routes include services from Gimpo to Sacheon and Gimpo to Ulsan, with further expansion to additional regional destinations across South Korea.

## What company datasets say SUM Air raised

Funding, as reported

The last round reported **Venture (Round not Specified)** Jun 2025

Last round date **Jun 2025**

## The company, in detail

What they build

Known for

aerospace collaboration aoc certification aircraft safety certification manufacturing airlines/aviation aircraft leasing regional air transport aircraft grooving technology airlines & aviation aircraft final assembly aircraft assembly displaced threshold landing sustainable aviation b2c aviation fuel operational efficiency

Built with from their website

Amazon CloudFront NAVER HREF Lang PWA Google Workspace Viewport Meta AppsFlyer Emotion Element UI Varnish

+8 more

webpack Amazon S3 Google Meet React Google Font API Mobile Friendly Multilingual Open Graph

- **Sector:** Airlines/aviation
- **Industry code:** NAICS 481111, SIC 4512

## Airlines/aviation in South Korea

Startups like it

- [**Doosan Mobility Innovation** Yongin-si · founded 2018](https://millionrounds.com/startup/doosan-mobility-innovation)
- [**Aero K Airlines** Cheongju-si · founded 2016](https://millionrounds.com/startup/aero-k-airlines)
- [**HazelAero** Seoul · founded 2023](https://millionrounds.com/startup/hazelaero)
- [**VONAER by Moviation Inc** Seoul · founded 2021](https://millionrounds.com/startup/vonaer-by-moviation-inc)

## Is this your company?

Add your raise, your deck and your story, and put SUM Air in front of investors. Or tell us what we have wrong.

[List your startup](https://millionrounds.com/list-your-startup)[Send a correction](https://millionrounds.com/corrections)