| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| SIE (Sines Airport) | airport | 37.94 | -8.82 | 0 | |||
| SIEA (Fazenda Ibiporã Airport) | airport | -21.46 | -50.80 | 1181 | 0 | ||
| SIEB (Fazenda Carrapicho Airport) | airport | -20.75 | -55.36 | 932 | 0 | ||
| SIEC (Fazenda Anhumas II Airport) | airport | -22.04 | -52.29 | 955 | 0 | ||
| SIED (Colonial Airport) | airport | -15.45 | -43.41 | 1621 | 0 | ||
| SIEE (Meliá Confort São Paulo Heliport) | airport | -23.63 | -46.71 | 2502 | 0 | ||
| SIEF (Fazenda São José Airport) | airport | -20.57 | -54.72 | 1722 | 0 | ||
| SIEFERT | airport | United States | 39.44 | -85.77 | 750 | 0 | |
| SIEG (Fazenda Santa Edwiges Airport) | airport | -22.65 | -53.39 | 951 | 0 | ||
| SIEG'S FARM | airport | United States | 43.89 | -94.49 | 1060 | 0 | |
| SIEGERLAND | airport | Germany | 50.71 | 8.08 | 1966 | 0 | |
| SIEGFRIED POINT | airport | United States | 36.49 | -94.99 | 740 | 0 | |
| SIEH (Lazzuli Heliport) | airport | -8.03 | -34.87 | 69 | 0 | ||
| SIEI (8º Batalhão da Polícia Militar Heliport) | airport | -26.31 | -48.86 | 98 | 0 | ||
| SIEJ (Monte Verde Airport) | airport | -9.95 | -57.50 | 821 | 0 | ||
| SIEK (Eurípedes Mineiro de Mello Heliport) | airport | -20.82 | -49.39 | 1838 | 0 | ||
| SIEL (Fazenda Várzea Funda Airport) | airport | -16.58 | -57.73 | 709 | 0 | ||
| SIEM (BASF Imigrantes Heliport) | airport | -23.72 | -46.60 | 2625 | 0 | ||
| SIEM REAP | airport | Cambodia | 13.41 | 103.81 | 60 | 0 | |
| SIEN (Fazenda São Marcos Airport) | airport | -15.40 | -53.34 | 1503 | 0 | ||
| SIEO (Ambev Jaguaríuna Heliport) | airport | -22.71 | -47.00 | 2192 | 0 | ||
| SIEP (Riachuelo - Matriz Heliport) | airport | -23.50 | -46.65 | 2595 | 0 | ||
| SIEPSERS EYE PORT | airport | United States | 39.97 | -75.66 | 350 | 0 | |
| SIER (Cosan Heliport) | airport | -22.63 | -47.69 | 1667 | 0 | ||
| SIERRA AIRPARK | airport | United States | 28.88 | -82.43 | 115 | 0 | |
| SIERRA BLANCA | airport | United States | 31.17 | -105.36 | 4512 | 0 | |
| SIERRA BLANCA RGNL | airport | United States | 33.46 | -105.53 | 6814 | 0 | |
| SIERRA MAESTRA | airport | Cuba | 20.29 | -77.09 | 112 | 0 | |
| SIERRA MEDICAL CENTER | airport | United States | 31.78 | -106.48 | 3905 | 0 | |
| SIERRA NEVADA MEMORIAL HOSPITAL | airport | United States | 39.23 | -121.05 | 2450 | 0 | |
| SIERRA PROVIDENCE HOSPITAL | airport | United States | 31.79 | -106.26 | 4002 | 0 | |
| SIERRA SKY PARK | airport | United States | 36.84 | -119.87 | 321 | 0 | |
| SIERRA VISTA COMMUNITY HOSPITAL | airport | United States | 31.55 | -110.27 | 4548 | 0 | |
| SIERRA VISTA HOSPITAL | airport | United States | 33.14 | -107.24 | 4250 | 0 | |
| SIERRA VISTA MUNI LIBBY AAF | airport | United States | 31.59 | -110.34 | 4719 | 0 | |
| SIERRAVILLE DEARWATER | airport | United States | 39.58 | -120.35 | 4984 | 0 | |
| SIET (Estância Tara Airport) | airport | -20.09 | -56.72 | 607 | 0 | ||
| SIEU (Diamante Heliport) | airport | -22.37 | -48.69 | 1444 | 0 | ||
| SIEV (Fazenda Boca da Onça Airport) | airport | -20.77 | -56.71 | 1050 | 0 | ||
| SIEY (Palácio das Mangabeiras Heliport) | airport | -19.95 | -43.91 | 3825 | 0 | ||
| SIEZ (Fazenda Pedra Branca Airport) | airport | -24.62 | -50.46 | 2953 | 0 |