| SeaTac to Imola | 5,506.16 mi (8,861.30 km) |
| SeaTac to Impruneta | 5,534.89 mi (8,907.55 km) |
| SeaTac to Induno Olona | 5,345.68 mi (8,603.05 km) |
| SeaTac to Inverigo | 5,362.18 mi (8,629.59 km) |
| SeaTac to Inveruno | 5,365.75 mi (8,635.34 km) |
| SeaTac to Inzago | 5,380.67 mi (8,659.35 km) |
| SeaTac to Iseo | 5,387.39 mi (8,670.17 km) |
| SeaTac to Isernia | 5,734.14 mi (9,228.20 km) |
| SeaTac to Isola Capo Rizzuto | 5,965.26 mi (9,600.16 km) |
| SeaTac to Isola del Liri | 5,713.23 mi (9,194.55 km) |
| SeaTac to Isola della Scala | 5,434.08 mi (8,745.31 km) |
| SeaTac to Isola Vicentina | 5,422.95 mi (8,727.40 km) |
| SeaTac to Ispica | 6,045.50 mi (9,729.29 km) |
| SeaTac to Istrana | 5,435.51 mi (8,747.61 km) |
| SeaTac to Itri | 5,736.34 mi (9,231.75 km) |
