Big Flats is a town in Chemung County, New York, United States.

The Warren E. Eaton Motorless Flight Facility was listed on the National Register of Historic Places.

The geography consists of a broad expanse of relatively flat land, the axis of which lies generally northeast to southwest.

Diligent searching will result in the finding of fossil seashells indicating the land was an ancient sea bottom.

The Southern Tier Expressway (Interstate 86/New York State Route 17) passes through Big Flats, with access from exits 49, 50, and 51.

17.1% of all households were made up of individuals, and 6.6% had someone living alone who was 65 years of age or older.

[7] Horseheads Central School District covers much of Big Flats Town.

[8] This climatic region is typified by large seasonal temperature differences, with warm to hot (and often humid) summers and cold (sometimes severely cold) winters.