| Delaware to Arcata (California) | 2,132.22 mi (3,431.48 km) |
| Delaware to Archdale (North Carolina) | 346.86 mi (558.22 km) |
| Delaware to Arden-Arcade (California) | 2,031.50 mi (3,269.39 km) |
| Delaware to Ardmore (Oklahoma) | 878.53 mi (1,413.86 km) |
| Delaware to Ardmore (Pennsylvania) | 411.21 mi (661.78 km) |
| Delaware to Arecibo (Puerto Rico) | 1,794.20 mi (2,887.48 km) |
| Delaware to Arkadelphia (Arkansas) | 694.86 mi (1,118.27 km) |
| Delaware to Arkansas City (Kansas) | 784.26 mi (1,262.15 km) |
| Delaware to Arlington (Tennessee) | 499.98 mi (804.64 km) |
| Delaware to Arlington (Texas) | 938.29 mi (1,510.03 km) |
| Delaware to Arlington (Virginia) | 332.50 mi (535.12 km) |
| Delaware to Arlington (Washington) | 1,986.03 mi (3,196.20 km) |
| Delaware to Arlington Heights (Illinois) | 284.16 mi (457.31 km) |
| Delaware to Arnold (Maryland) | 360.07 mi (579.47 km) |
| Delaware to Arnold (Missouri) | 410.33 mi (660.36 km) |
