Ryanair has moved to assure customers that they will provide options "including refunds" for cancelled flights during the coronavirus pandemic.

Many customers were concerned and took to social media to complain after receiving an email from the airline which stated that Covid-19 restrictions "prevent us from processing refunds as quickly as we would like to," while offering travel vouchers instead.

The company said the vouchers can be used for the "purchase of Ryanair flights and other services" in the coming year.

In a statement, Ryanair said, "For any cancelled flight, Ryanair is giving customers all of the options set out under EU regulations, including refunds".

Under European Union law, passengers whose flight have been cancelled must be offered the choice of a refund, rerouting at the earliest opportunity, or rerouting at a later date.

Minister for Business, Enterprise and Innovation Heather Humphreys has said she plans to contact the Competition and Consumer Protection Commission about the issue.