線上值機線下值機的區別，值機和選座的區別，有托運行李和沒有托運行李值機方式的選擇。 什么是值機？
值機意思是為旅客辦理乘機手續：
換登機牌、收運旅客的托運行李、安排旅客的座位。通過網上辦理登機手續提前預訂座位并將登機牌打印出來，就可以直接通過安檢登機，還有一種是不用打印登機牌的，當你線上值機選座之后手機上會出現登機二維碼，您就可以直接拿二維碼登機。無需到機場服務柜臺排隊辦理登機牌，這樣可以節省時間。 線上值機和線下值機的區別 圖片為電子登機牌（不同情況顯示方式不同）
線上值機：
一般前1~2天即可網上辦理，到飛機起飛前2小時關閉。旅客只需通過登錄購票軟件——點擊我的——點擊我的訂單——值機。便能自行完成身份證件驗證和選擇確定座位，飛機起飛前到機場自助打印機，打印登機牌（或直接獲取電子登機牌也可以登機）等一系列操作。
線下值機：
只能坐飛機那天到機場辦理，一般是飛機起飛前4個小時到起飛前45分鐘關閉。旅客需要在飛機起飛前2小時到達機場，前往指定的航空公司柜臺或自助值機設備辦理登機手續。
有行李情況下值機
托運行李也能線上值機的，但是您得拿著線上值機后的電子登機牌，到值機柜臺辦理行李托運手續。最快速的方法還是直接提前到達機場，到值機柜臺辦理托運行李和登機牌。
值機和選座位有啥區別？
我們先來說說啥時候能選擇，其實只要大家買了飛機票，多數航空公司，在機票出票后和起飛前60分鐘，都是能夠線上選座的。 另外，還要看你坐的航班支不支持值機前選座，不支持的話，那就值機的時候再選了。一般來說，選座可以在值機前進行，也可以在值機過程中進行。
值機選座怎么選
1、登機牌換取時：可以在航空公司提供的柜臺進行座位選擇。（直接和工作人員說你要坐的座位）
2、網上值機：在飛行的前兩個小時進行網上值機，然后在網站上選擇座位。（所購票的小程序——我的——訂單——值機選座）
3、電話聯系航空公司客服：提供個人信息和座位偏好，客服會協助完成值機手續。 請注意，不同的航空公司可能有不同的規定和要求，因此在選擇座位時應先了解航空公司的相關規定。
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.
