| SeaTac to Indianapolis (Indiana) | 1,865.78 mi (3,002.68 km) |
| SeaTac to Indianola (Iowa) | 1,469.74 mi (2,365.31 km) |
| SeaTac to Indio (California) | 998.47 mi (1,606.87 km) |
| SeaTac to Inglewood (California) | 954.32 mi (1,535.83 km) |
| SeaTac to Inkster (Michigan) | 1,920.94 mi (3,091.45 km) |
| SeaTac to Inver Grove Heights (Minnesota) | 1,403.17 mi (2,258.18 km) |
| SeaTac to Inwood (New York) | 2,416.49 mi (3,888.97 km) |
| SeaTac to Iona (Florida) | 2,611.83 mi (4,203.33 km) |
| SeaTac to Ionia (Michigan) | 1,820.16 mi (2,929.26 km) |
| SeaTac to Iowa City (Iowa) | 1,555.67 mi (2,503.60 km) |
| SeaTac to Irmo (South Carolina) | 2,306.76 mi (3,712.36 km) |
| SeaTac to Irondale (Alabama) | 2,079.75 mi (3,347.03 km) |
| SeaTac to Ironton (Ohio) | 2,069.86 mi (3,331.12 km) |
| SeaTac to Irvine (California) | 979.97 mi (1,577.12 km) |
| SeaTac to Irving (Texas) | 1,662.00 mi (2,674.73 km) |
