我刚刚预定瑞安航空，应该是提前30天可以进行网上check in.这个是我刚收到的确认信里面的内容All customers are required to check-in online and either print their boarding pass or download it from our mobile app. If you don't check-in online before your flight you can do so at the airport for a fee, click here.Customers who have checked in online but don't present their boarding pass at the airport, can have it reissued for a fee, click here.Online check-in opens from 30 days up to 2 hours before each flight. Check in via our mobile app or web online check-in. Business Plus customers can check-in at the airport free of charge.