线上值机、线下值机、有托运行李和没有托运行李值机方式的选择。

线上值机线下值机的区别，值机和选座的区别，有托运行李和没有托运行李值机方式的选择。 什么是值机？

值机意思是为旅客办理乘机手续：

换登机牌、收运旅客的托运行李、安排旅客的座位。通过网上办理登机手续提前预订座位并将登机牌打印出来，就可以直接通过安检登机，还有一种是不用打印登机牌的，当你线上值机选座之后手机上会出现登机二维码，您就可以直接拿二维码登机。无需到机场服务柜台排队办理登机牌，这样可以节省时间。 线上值机和线下值机的区别 图片为电子登机牌（不同情况显示方式不同）

 线上值机：

一般前1~2天即可网上办理，到飞机起飞前2小时关闭。旅客只需通过登录购票软件——点击我的——点击我的订单——值机。便能自行完成身份证件验证和选择确定座位，飞机起飞前到机场自助打印机，打印登机牌（或直接获取电子登机牌也可以登机）等一系列操作。 

线下值机：

只能坐飞机那天到机场办理，一般是飞机起飞前4个小时到起飞前45分钟关闭。旅客需要在飞机起飞前2小时到达机场，前往指定的航空公司柜台或自助值机设备办理登机手续。 

有行李情况下值机 

托运行李也能线上值机的，但是您得拿着线上值机后的电子登机牌，到值机柜台办理行李托运手续。最快速的方法还是直接提前到达机场，到值机柜台办理托运行李和登机牌。

 值机和选座位有啥区别？

 我们先来说说啥时候能选择，其实只要大家买了飞机票，多数航空公司，在机票出票后和起飞前60分钟，都是能够线上选座的。 另外，还要看你坐的航班支不支持值机前选座，不支持的话，那就值机的时候再选了。一般来说，选座可以在值机前进行，也可以在值机过程中进行。

 值机选座怎么选 

1、登机牌换取时：可以在航空公司提供的柜台进行座位选择。（直接和工作人员说你要坐的座位）

 2、网上值机：在飞行的前两个小时进行网上值机，然后在网站上选择座位。（所购票的小程序——我的——订单——值机选座）

 3、电话联系航空公司客服：提供个人信息和座位偏好，客服会协助完成值机手续。 请注意，不同的航空公司可能有不同的规定和要求，因此在选择座位时应先了解航空公司的相关规定。

The difference between online and offline check-in, the difference between check-in and seat selection, and choice of check-in methods with and without luggage. What is check-in? 

Check-in refers to the process of handling boarding procedures for passengers: 

Issuing boarding passes collecting checked luggage from passengers, and arranging passenger seats. By booking seats in advance online and printing out the boarding pass, you can go directly through security and board plane. There is also a type that does not require printing a boarding pass. After online check-in and seat selection, a boarding QR code will appear on your, and you can directly use the QR code to board the plane. This saves the time of queuing at the airport service counter to get a boarding pass. between online and offline check-in The picture is an electronic boarding pass (displayed differently in different situations) 

Online check-in:

 You can usually check in online -2 days in advance, and it closes 2 hours before the plane takes off. Passengers only need to log in to the ticket booking software - click mine - click on my orders - check-in. You can then complete the ID verification and select your seat. Before the plane takes off, go to the airport self-service printer to print the boarding pass (or directly get an electronic boarding pass to board the plane). 

Offline check-in:

 You can only check in at the on the day of the flight, usually from 4 hours before the plane takes off to 45 minutes before the plane takes off. Passengers need to at the airport 2 hours before the plane takes off and go to the designated airline counter or self-service check-in device to handle the boarding procedures. 

Check-in luggage: 

You can also check in online with luggage, but you need to take the electronic boarding pass obtained from online check-in to the check-in counter to handle luggage check-in procedures. The fastest method is still to arrive at the airport in advance and go to the check-in counter to handle both luggage check-in and boarding. What is the difference between check-in and seat selection?

 Once you have purchased your plane ticket, most airlines allow you to select your seat online between the time ticket is issued and 60 minutes before the flight takes off. Additionally, it depends on whether the flight you are on supports seat selection before check-in. not, you will have to select your seat during check-in. In general, you can select your seat before or during check-in.

 How to select a seat check-in: 1. When exchanging the boarding pass: You can choose your seat at the airline's counter (just tell the staff which seat you want). 

2. check-in: Perform online check-in two hours before the flight and select your seat on the website (the applet where you bought the ticket - mine - orders check-in and seat selection). 

3. Contact the airline's customer service by phone: Provide your personal information and seat preference, and the customer service will assist you complete the check-in procedures. Please note that different airlines may have different rules and requirements, so you should understand the relevant regulations of the airline before selecting your.