Checking in for a flight? Do it before 9.00pm tonight!

Ryanair says its online check-in service will not be available, as its website and mobile app will close for five hours for an upgrade.

It will shut from 9.00pm Irish time on Tuesday August 11th, until 2.00am on Wednesday August 12th.

Ryanair is advising all customers travelling on Tuesday and Wednesday to check-in online for their flight before the closure takes place.

New bookings or changes to existing flights will also not be possible during this time.

Ryanair is contacting all intending customers travelling on Tuesday 11th and Wednesday 12th by e-mail and text to advise them.

The carrier has apologised for any inconvenience caused.