| 城市名称 | 机场三字代码 | 机场四字代码 | 机场名称 | 英文名称 |
| STCORIX | STX | STCORIX | ||
| 萨尔托 | STY | SALTO | ||
| CRISTOBALCAS | STZ | CRISTOBALCASAS | ||
| STUART | SUA | STUART | ||
| SUNDANCESCHL | SUC | SUNDANCESCHLOREDT | ||
| STROUD | SUD | STROUD | ||
| STURGEONBAY | SUE | STURGEONBAY | ||
| LAMEZIA-TERM | SUF | LAMEZIA-TERME | ||
| SURIGAO | SUG | SURIGAO | ||
| SUR | SUH | SUR | ||
| SUKHUMI | SUI | SUKHUMI | ||
| 萨图马雷 | SUJ | SATUMARE | ||
| SAMCHOK | SUK | SAMCHOK | ||
| SUI | SUL | SUI | ||
| SUMTER | SUM | SUMTER | ||
| SUNVALLEY | SUN | SUNVALLEY | ||
| SUMENEPTRUNO | SUP | SUMENEPTRUNOJOYO | ||
| SUCUA | SUQ | SUCUA | ||
| ST.LOUISSPIR | SUS | ST.LOUISSPIRIT | ||
| 松巴万加 | SUT | SUMBAWANGA | ||
| DULUTHMN/SUP | SUW | DULUTHMN/SUPERIORBON | ||
| 苏城 | SUX | SIOUXCITY | ||
| SUDUREYRI | SUY | SUDUREYRI | ||
| SURIA | SUZ | SURIA | ||
| SAVOONGA | SVA | SAVOONGA | ||
| SAMBAVA | SVB | SAMBAVA | ||
| SILVERCITY | SVC | SILVERCITY | ||
| STVINCENT | SVD | STVINCENT | ||
| SUSANVILLE | SVE | SUSANVILLE | ||
| SAVE | SVF | SAVE | ||
| 斯塔万格 | SVG | STAVANGER | ||
| STATESVILLE | SVH | STATESVILLE | ||
| SANVINCENTED | SVI | SANVINCENTEDELCAGUAN | ||
| SVOLVAER | SVJ | SVOLVAER | ||
| SILVERCREEK | SVK | SILVERCREEK | ||
| SAVONLINNA | SVL | SAVONLINNA | ||
| ST.PAULSMISS | SVM | ST.PAULSMISSION | ||
| SAVANNAHHUNT | SVN | SAVANNAHHUNTERAAF | ||
| KUITOCUITO | SVP | KUITOCUITO | ||
| 塞维利亚 | SVQ | SEVILLE | ||
| SVAYRIENG | SVR | SVAYRIENG | ||
| STEVENSVILLA | SVS | STEVENSVILLAGE | ||
| SAVUSAVU | SVU | SAVUSAVU | ||
| SANSALVADORD | SVV | SANSALVADORDEPAUL | ||
| SPARREVOHN | SVW | SPARREVOHN | ||
| SAVO | SVY | SAVO | ||
| 圣安东尼奥 | SVZ | SANANTONIO | ||
| SHAWRIVER | SWB | SHAWRIVER | ||
| STAWELL | SWC | STAWELL | ||
| SEWARD | SWD | SEWARD | ||
| SIWEA | SWE | SIWEA | ||
| NEWBURGH | SWF | NEWBURGH | ||
| SATWAG | SWG | SATWAG | ||
| 斯旺希尔 | SWH | SWANHILL | ||
| SWINDON | SWI | SWINDON | ||
| SOUTHWESTBAY | SWJ | SOUTHWESTBAY | ||
| MILANSEGRATE | SWK | MILANSEGRATE | ||
| SUIA-MISSU | SWM | SUIA-MISSU | ||
| SAHIWAL | SWN | SAHIWAL | ||
| STILLWATER | SWO | STILLWATER |
机场三字代码简称“三字代码”，由国际航空运输协会（IATA ,International Air Transport Association）制定。国际航空运输协会（IATA）对世界上的国家、城市、机场、加入国际航空运输协会的航空公司制定了统一的编码。在空运中以三个英文字母简写航空机场名，称“机场三字代码”或“三字代码”。
世界上每一个民航机场都有自己唯一的三字码，部分空军机场也有三字码。机场三字代码查询支持国际机场三字代码查询，国内机场3字代码查询，全球机场三字代码查询，国内机场三字代码，始发机场三字代码，机场三字代码表，国际机场三字代码表查询。