| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| ISAACSON | airport | United States | 47.66 | -117.68 | 2410 | 0 | |
| ISABEL MUNI | airport | United States | 45.39 | -101.44 | 2398 | 0 | |
| ISBELL | airport | United States | 36.19 | -76.28 | 12 | 0 | |
| ISBELL FLD | airport | United States | 34.47 | -85.72 | 877 | 0 | |
| ISBELL RANCH | airport | United States | 30.81 | -97.27 | 430 | 0 | |
| ISEDOR IVERSON | airport | United States | 46.62 | -93.31 | 1228 | 0 | |
| ISLAND | airport | United States | 38.22 | -81.53 | 600 | 0 | |
| ISLAND AIR SERVICE | airport | United States | 41.77 | -70.87 | 53 | 0 | |
| ISLAND HEALTH CLINIC | airport | United States | 36.45 | -93.72 | 1547 | 0 | |
| ISLAND LAKE | airport | United States | 60.70 | -151.31 | 140 | 0 | |
| ISLAND LAKE | airport | United States | 61.63 | -149.62 | 370 | 0 | |
| ISLAND VIEW | airport | United States | 45.61 | -89.02 | 1640 | 0 | |
| ISLE PRIVATE | airport | United States | 46.16 | -93.46 | 1271 | 0 | |
| ISLE-A-PORT | airport | United States | 35.10 | -90.11 | 215 | 0 | |
| ISLESBORO | airport | United States | 44.30 | -68.91 | 92 | 0 | |
| ISLEY FIELD | airport | United States | 42.52 | -92.52 | 982 | 0 | |
| ISN (SLOULIN FLD INTL) | airport | United States | 48.18 | -103.64 | 1982 | 0 | |
| ISO (KINSTON RGNL JETPORT AT STALLINGS FLD) | airport | United States | 35.33 | -77.61 | 93 | 0 | |
| ISP (LONG ISLAND MAC ARTHUR) | airport | United States | 40.80 | -73.10 | 99 | 0 | |
| ISRAEL'S FARM | airport | United States | 48.51 | -122.09 | 65 | 0 | |
| ISS (WISCASSET) | airport | United States | 43.96 | -69.71 | 70 | 0 | |
| ISW (ALEXANDER FLD SOUTH WOOD CO) | airport | United States | 44.36 | -89.84 | 1021 | 0 |