| SeaTac to Cadillac (Michigan) | 1,771.89 mi (2,851.57 km) |
| SeaTac to Caguas (Puerto Rico) | 3,733.69 mi (6,008.79 km) |
| SeaTac to Cahokia (Illinois) | 1,720.10 mi (2,768.24 km) |
| SeaTac to Calabasas (California) | 938.54 mi (1,510.43 km) |
| SeaTac to Caldwell (Idaho) | 378.45 mi (609.05 km) |
| SeaTac to Caledonia (Wisconsin) | 1,694.14 mi (2,726.45 km) |
| SeaTac to Calera (Alabama) | 2,093.95 mi (3,369.88 km) |
| SeaTac to Calexico (California) | 1,080.32 mi (1,738.61 km) |
| SeaTac to Calhoun (Georgia) | 2,118.53 mi (3,409.45 km) |
| SeaTac to California (Maryland) | 2,366.92 mi (3,809.20 km) |
| SeaTac to California City (California) | 879.08 mi (1,414.74 km) |
| SeaTac to Callaway (Florida) | 2,281.21 mi (3,671.25 km) |
| SeaTac to Calumet City (Illinois) | 1,742.76 mi (2,804.70 km) |
| SeaTac to Calverton (Maryland) | 2,319.42 mi (3,732.74 km) |
| SeaTac to Camano (Washington) | 51.89 mi (83.51 km) |
