联程票行李直挂¶
What is a connecting ticket? What is through baggage check-in? A guide to connecting and non-connecting through baggage check-in.
If through baggage check-in is not available for the first segment, unless your second transit station allows checked baggage entry or agrees to handle the baggage, you may not be able to bring your baggage on board the aircraft, which poses a significant risk.
This must be clarified in advance with the airline of the first segment. Generally, if the second segment has only one connection, the first segment may not accept through check-in for two connections. Different subsequent airlines have different requirements and operations, depending on how the first segment airline handles the situation.
Recently, countless netizens have asked me the same question about through baggage check-in and the related issues of connecting and non-connecting flights. In fact, I have briefly mentioned this question in previous Weibo posts, but perhaps not in great detail. Therefore, Ten Cats has decided to write a separate article specifically addressing this issue of connecting and non-connecting flights, as well as through baggage check-in.
Ten Cats reminds you: This article is for reference only. Please refer to the official information provided by the airlines and airports at that time.
Guide to Connecting and Non-Connecting Flights and Through Baggage Check-In
First, let's talk about what a connecting flight is.
It refers to a ticket that includes a transit flight, and it must be purchased together, not separately. This means that you must directly purchase a ticket from location A to location C with a transit at location B from a certain ticket office. Location B is the transit area, and generally, it is a non-stop overnight transit (some airports have a time limit of within 24 hours, depending on the specific situation, subject to the airline and airport regulations). In other words, when you have a ticket that includes the A-B-C journey on a single itinerary, it is called a connecting ticket. It can also involve multiple transit locations, and in such cases, you can inquire with the airline about through baggage check-in.
A connecting ticket can be from the same airline, an alliance airline, or one that has signed a BIA (Behind and Beyond Interline Agreement) (more on what BIA is later). But it must be purchased together, and usually, all the segments of the journey will be on a single itinerary. You can also have all the boarding passes for the subsequent segments printed at the first segment (Ten Cats reminds you: Some international transit areas at airports do not have transfer counters or similar facilities, so it may not be possible to print boarding passes for subsequent segments, and some transit airports may not assist with rechecking baggage).
What is a non-connecting ticket?
A non-connecting ticket refers to individual tickets purchased separately. For example, if you first purchase a ticket from London to Paris and then another ticket from Paris to Shanghai, or if you purchase the first segment first and then the tickets for the subsequent segments separately, it means that the tickets were not purchased together but as separate segments. These individual tickets purchased separately are known as non-connecting tickets.
What is through baggage check-in?
Most airlines worldwide have a baggage interline agreement (BIA), which allows for through baggage check-in. This means that when you have a connecting ticket, you can check your baggage directly to your final destination. For example, on a London-Paris-Shanghai itinerary, you can check your baggage in London and not have to retrieve it in Paris. You can then collect your baggage upon arrival in Shanghai.
Here is a list of domestic airlines in China that have signed the BIA for through baggage check-in:
The two-letter codes used to abbreviate airline names are IATA codes, which are standardized codes developed by the International Air Transport Association (IATA) for airlines, cities, and airports worldwide. IATA stands for the International Air Transport Association. Each airline is represented by a two-letter code. For example, the two-letter code for Air China is "CA."
Please note that the following image represents airline codes. For example, "CA" represents Air China, and "AA" represents the IATA code for American Airlines.
The image below shows the other global airlines that have a baggage interline agreement with Air China, and the letters represent the two-letter codes for each airline
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如下图，字母是各个航司的二字代码
十升喵提醒：
1、没有行李直挂协议的航司，是不可以直挂行李的。大多数的航空都会有这个BIA协议，但还是有一部分航司是没有的，其中基本上廉价航空是没有行李直挂的。
2、一般来说行李直挂是需要在第一段行程时就要进行行李直挂的，并且拿到一张行李票，上面有所有的航司代码，这个行李票非常重要，一定千万不要丢，保存好，因为行李不管发生什么问题，都需要这张重要的行李票。
3、联程机票的意思指的是可以托运行李直挂，前提不过境不过夜。但是即使这些航司之间有行李直挂协议，行李也不一定能直挂，全看当天值机的时候柜台的航司工作人员是否愿意帮您进行托运行李直挂，也就是说航司也是可以拒绝帮您直挂行李的，但是一般情况下联程的机票是可以进行行李直挂的。而非联程的机票，一般来说是不会行李直挂的，但是也不一定的，看您的运气，航司愿意帮您进行行李直挂就会帮助您，但是航司如果不愿意帮助您，也是没有办法的。
4、不管买什么机票，都要问清楚转机相关规定等，以避免无法转机而导致滞留。
5、买非联程机票，要提前做好各种准备，包括但不限于行李不许直挂，那么怎么处理行李，第一段柜台不打印全部行程的登机牌的话，怎么办？如果到了中转机场，也不能打印后面的登机牌，那么该怎么办？中转机场是否可以过境，需不需要签证，转机时间，是否会协助再次托运行李，是否有其他规定等等。
6、不管是联程还是非联程，一定要在第一段行程时，就要问清楚自己的行李情况，包括中转的时候是否需要取行李，怎么重新再次托运，中转取行李是否需要过境等。还有问清楚是不是行李直挂，行李到达的最后目的地是哪里，一定过要仔细再仔细的看托运行李票上的目的地代码。
以上这些是随时都可能发生变动的，所以请大家一切都以当时的航司及机场官方为准。
全球机场目的地三字代码
机场3字代码简称“三字代码”，是国际航空运输协会IATA对全球所有国家、城市、机场和加入了国际航空运输协会IATA的所有航空公司制定的统一代码。IATA英文全称是International AirTransport Association。其中，在空运中以3个英文字母简写的航空机场名字，称为“三字代码”或“机场三字代码”。而国际航空公司一般是“二字代码”，例如国航二字代码就是CA。
国内航司间转机的行李直挂方式，也通用这个指南，请大家灵活运用这个指南。
例如，从下图中可以看出下面IATA代码字母：
如上面图中的十升喵标的数字序号和蓝色线条，解释如下面：
（1）、YYZ，指的是行李直挂票是在6月20日于多伦多皮尔逊国际机场打印的，也就是第一段，这个第一段就要将所有的后续行程的三字代码都打印到一张行李票上，才是成功的从第一段开始就进行的行李直挂。
（2）、YUL，指的是转机在蒙特利尔特鲁多国际机场。
（3）、CDG，指的是转机在巴黎夏尔·戴高乐机场。
（4）、PVG，指的是最后目的地机场上海浦东国际机场，也就是您最后要落地取行李的地方。
（5）、最顶端会写上海浦东SHANGHAI PUDONG的这个拼音，也就是您的行程要到达的目的地。
（6）看图中，十升喵画的第一条蓝色线后面指的是：航班号
（7）第二条蓝色线后面指的是：时间
（8）托运行李票的编号
也就是说，大家如果转机回国，行李直挂的话，行李票上必须要有每段行程的机场IATA三字代码，每一个都要认真检查仔细，特别是最后一个您要到达的地方。这个行李票很重要，请保存收好。
全球机场三字代码表格图，如下：
国内机场三字代码表格图，如下：
