| SeaTac to Blue Island (Illinois) | 1,735.35 mi (2,792.78 km) |
| SeaTac to Blue Springs (Missouri) | 1,516.01 mi (2,439.78 km) |
| SeaTac to Bluffdale (Utah) | 704.16 mi (1,133.24 km) |
| SeaTac to Bluffton (Indiana) | 1,880.26 mi (3,025.99 km) |
| SeaTac to Bluffton (South Carolina) | 2,397.80 mi (3,858.89 km) |
| SeaTac to Blythe (California) | 1,035.42 mi (1,666.34 km) |
| SeaTac to Blytheville (Arkansas) | 1,833.34 mi (2,950.48 km) |
| SeaTac to Boca Raton (Florida) | 2,700.80 mi (4,346.51 km) |
| SeaTac to Boerne (Texas) | 1,749.67 mi (2,815.83 km) |
| SeaTac to Bogalusa (Louisiana) | 2,062.17 mi (3,318.75 km) |
| SeaTac to Boiling Springs (South Carolina) | 2,232.64 mi (3,593.09 km) |
| SeaTac to Boise (Idaho) | 395.78 mi (636.95 km) |
| SeaTac to Bolingbrook (Illinois) | 1,714.73 mi (2,759.60 km) |
| SeaTac to Bolivar (Missouri) | 1,607.79 mi (2,587.49 km) |
| SeaTac to Bon Air (Virginia) | 2,344.33 mi (3,772.84 km) |
