| Delaware to Yonkers (New York) | 484.81 mi (780.23 km) |
| Delaware to Yorba Linda (California) | 1,949.58 mi (3,137.55 km) |
| Delaware to York (Pennsylvania) | 335.75 mi (540.33 km) |
| Delaware to Yorktown (Indiana) | 128.80 mi (207.28 km) |
| Delaware to Yorkville (Illinois) | 296.00 mi (476.36 km) |
| Delaware to Youngstown (Ohio) | 139.07 mi (223.81 km) |
| Delaware to Youngsville (Louisiana) | 864.63 mi (1,391.49 km) |
| Delaware to Ypsilanti (Michigan) | 138.29 mi (222.56 km) |
| Delaware to Yuba City (California) | 2,035.03 mi (3,275.07 km) |
| Delaware to Yucaipa (California) | 1,907.27 mi (3,069.46 km) |
| Delaware to Yucca Valley (California) | 1,872.13 mi (3,012.89 km) |
| Delaware to Yukon (Oklahoma) | 864.53 mi (1,391.32 km) |
| Delaware to Yulee (Florida) | 672.09 mi (1,081.63 km) |
| Delaware to Yuma (Arizona) | 1,817.38 mi (2,924.79 km) |
| Delaware to Zachary (Louisiana) | 804.80 mi (1,295.20 km) |
