在線值機之后，還能改簽或者退票嗎？是可以改簽和 退票的。

各位旅客朋友們，在如今便捷的航空出行中，很多人會選擇在線值機。但你是否清楚在線值機后如果需要改簽或者退票該如何操作呢？今天就來為大家詳細講解。

1、在飛機起飛前的一到三天，你可以進行在線值機，提前選好自己心儀的座位，為出行做好準備。如果此時你想退票或者改簽，就需要提前取消值機，然后進行退票或者改簽的后續操作。（可以在網上取消值機）

2、當飛機起飛前的最后兩小時，你要進行退票或者改時間就無法再進行任何網上操作了。直接到機場辦理相關手續。到機場后，可以前往航空公司的值機柜臺或者客服中心，向工作人員說明情況，他們會為你提供專業的幫助和指導。

希望以上內容能為大家的出行提供一些幫助，讓你的旅途更加順暢和愉快。

Can I change or refund my ticket after I check in online? It can be changed and refunded. 

Dear passengers, in today's convenient air travel, many people will choose online check-in. But do you know how to change or refund your ticket if you need to check in online? Today we will explain it in detail. The first thing to be clear is that the online check-in machine can still change or refund. However, there is an important premise, that is to cancel the online check-in machine. 1. You can check in online one to three days before your flight takes off, pick your seat in advance, and get ready for travel. If you want to refund or change at this time, you need to cancel the check-in machine in advance, and then carry out a refund or change the subsequent operation. (you can cancel your check-in online.) When the last two hours before the flight, you have to refund or change the time you can no longer do any online operations. Go directly to the airport for formalities. After arriving at the airport, you can go to the check-in counter or customer service center of the airline to explain the situation to the staff, they will provide you with professional help and guidance. Hope the above content can provide some help for your trip, so that your journey more smooth and pleasant.