机场三字码查询
按城市、机场名或三字码查 IATA 机场代码，订票、看机票不再懵。
IATA 三字码是国际航空运输协会给机场的编码，机票、行李牌、行程单上都用它标识机场。
中文介绍
机票上「PEK→PVG」不是乱码，是机场的 IATA 三字码。订票、看行程单、机场值机都靠它。这个工具收录中国与全球主要机场的三字码，可按城市、机场名或代码双向查询。
常见问题
IATA 三字码和四字码（ICAO）有什么区别？
三字码（IATA）用于机票与旅客服务，如 PEK；四字码（ICAO）用于航空管制与飞行计划，如 ZBAA。旅客日常看三字码即可。
一个城市可能有好几个机场吗？
会。如北京有首都（PEK）和大兴（PKX）、上海有浦东（PVG）和虹桥（SHA）。订票时看清是哪个机场。
代码会变吗？
极少变。个别机场因迁址换代码（如青岛流亭 TAO 迁胶东后沿用 TAO），以航司出票为准。
English
"PEK→PVG" on a ticket isn't random — it's the IATA airport code. Booking, itineraries and check-in all rely on it. This tool covers major Chinese and world airports, searchable by city, airport name or code.
FAQ
What is the difference between IATA and ICAO codes?
The 3-letter IATA code is for tickets and passenger service (e.g. PEK); the 4-letter ICAO code is for air-traffic control and flight plans (e.g. ZBAA). Travelers just need the IATA code.
Can one city have several airports?
Yes. Beijing has Capital (PEK) and Daxing (PKX); Shanghai has Pudong (PVG) and Hongqiao (SHA). Check which airport when booking.
Do codes ever change?
Rarely. A few change with relocation — always follow what the airline issues on your ticket.