- URL: Shonai (SYO)
- Time zone: GMT 9
- Service telephone: +81 234 92 4181
- Address: Shonai Airport, 30-3 Hamanaka, Aza, Mura Higashi, Sakata City, Yamagata Prefecture, 998-0112 Japan
- Operating company: Shonai Airport Building Co.,Ltd.
- Parking: Yes, free parking for approximately 650 vehicles.
- Nearby cities: Sakata (13 km), Yamagata (79 km)
- Directions by car: The airport is located about 2 km or less than a mile south of Hamaka and approximately 13 km or 8 miles southwest of Shonai.
- Flight distribution on the days of the week: Monday (14.22%), Tuesday (13.98%), Wednesday (13.98%), Thursday (14.22%), Friday (14.45%), Saturday (14.45%), Sunday (14.69%)
- Alternative spelling: Shōnai, Сьонай, Сёнай, 쇼나이, 庄内町, 庄內町, 莊內町
The airport first opened in 1991 and is located approximately 14 km or 8 miles southwest of Shonai and about 12 km or 8 miles south of Sakata in the town of Hamanaka. It is accessible from either the Yamagata Expressway toll road or the highway 112.