✅ Trip Verified
| As of June 2020 you can simply add 55 EUR to the price of a one-way flight of you itinerary that is operated by Ryanair. If you don't check-in online, you have to pay for the check-in in the airport. It is there in the conditions, so no surprise. But if you google something like "ryanair error check in" there are quite many people complaining about not being able to check-in online. Though there are useless advice like trying other browser and clearing browser cookies. I had seats purchased, so theoretically I was able to check-in 60 days in advance. I tried it a week in advance, several days in advance, less that 2 days but more than 24 hours in advance. Never worked. You just fill all the check-in data in the account/booking, click next and nothing happens. In the browser console network tab you can see a 500 HTTP status return for the request made when you click "next". It usually means that the web service encountered an unexpected error, but of course only people that have access to the system can figure out why the error happened. User interface of Ryanair web application doesn't report any problem whatsoever, just does nothing. After not being able to check-in online, had to pay 55 EUR in the airport. Filed a complaint online on Ryanair site, no answer for more than a month, and I don't expect any.