Low-cost airline Ryanair is expecting the "worst summer ever for delays", blaming planned Europe-wide air-traffic control strikes and staff shortage for the inconvenience.

Last summer was already the worst summer for delays because of strikes by air-traffic controllers, head of sales and marketing Chiara Ravara said on Thursday. But this is set to become worse and the airline is calling on governments to help deal with the issue.

One solution for potential strikes in countries like the UK and Germany would be to have neighbouring countries help by taking over air traffic control, she said.

Last summer saw a number of delays caused by strikes in countries such as Italy, UK and Germany as controllers demanded better working conditions.

Read: Ryanair flights cancelled following strikes in Italy

Ms Ravara was speaking at a press conference where the airline launched 15 new routes to countries including Amman and Santiago.

Turning to concerns on the controversial Boeing Max 8 aircraft, Ms Ravara said the airline still had plans to eventually operate the aircraft but it would first await the outcome of investigations before making further comments.

Flights of the Boeing Max 8 aircraft, have been banned after it crashed in Ethopia last week.

Ryanair has ordered 135 737 MAX 200s, a modified version of the MAX 8, and has options on 75 more. It is due to take delivery of the first in April, two in May, two in June and then 50 more before the 2020 summer season.