| SeaTac to Kalispell (Montana) | 373.38 mi (600.90 km) |
| SeaTac to Kaneohe (Hawaii) | 2,667.06 mi (4,292.22 km) |
| SeaTac to Kankakee (Illinois) | 1,743.44 mi (2,805.79 km) |
| SeaTac to Kannapolis (North Carolina) | 2,277.73 mi (3,665.65 km) |
| SeaTac to Kansas City (Kansas) | 1,490.43 mi (2,398.61 km) |
| SeaTac to Kansas City (Missouri) | 1,499.09 mi (2,412.56 km) |
| SeaTac to Kapaa (Hawaii) | 2,694.64 mi (4,336.61 km) |
| SeaTac to Kapolei (Hawaii) | 2,681.86 mi (4,316.03 km) |
| SeaTac to Katy (Texas) | 1,862.02 mi (2,996.63 km) |
| SeaTac to Kaukauna (Wisconsin) | 1,638.84 mi (2,637.47 km) |
| SeaTac to Kaysville (Utah) | 676.56 mi (1,088.82 km) |
| SeaTac to Kearney (Missouri) | 1,499.67 mi (2,413.48 km) |
| SeaTac to Kearney (Nebraska) | 1,237.12 mi (1,990.95 km) |
| SeaTac to Kearns (Utah) | 692.71 mi (1,114.80 km) |
| SeaTac to Kearny (New Jersey) | 2,395.14 mi (3,854.61 km) |
