| SeaTac to Duluth (Minnesota) | 1,410.06 mi (2,269.27 km) |
| SeaTac to Dumas (Texas) | 1,313.28 mi (2,113.52 km) |
| SeaTac to Dumont (New Jersey) | 2,394.93 mi (3,854.27 km) |
| SeaTac to Duncan (Oklahoma) | 1,542.11 mi (2,481.79 km) |
| SeaTac to Duncanville (Texas) | 1,674.73 mi (2,695.21 km) |
| SeaTac to Dundalk (Maryland) | 2,333.42 mi (3,755.28 km) |
| SeaTac to Dunedin (Florida) | 2,502.63 mi (4,027.60 km) |
| SeaTac to Dunkirk (New York) | 2,100.91 mi (3,381.09 km) |
| SeaTac to Dunmore (Pennsylvania) | 2,305.36 mi (3,710.12 km) |
| SeaTac to Dunwoody (Georgia) | 2,169.91 mi (3,492.13 km) |
| SeaTac to Durango (Colorado) | 1,015.10 mi (1,633.64 km) |
| SeaTac to Durant (Oklahoma) | 1,631.93 mi (2,626.33 km) |
| SeaTac to Durham (North Carolina) | 2,339.32 mi (3,764.77 km) |
| SeaTac to Dyer (Indiana) | 1,748.12 mi (2,813.33 km) |
| SeaTac to Dyersburg (Tennessee) | 1,852.71 mi (2,981.65 km) |
