The UK could be left without any flights to and from Europe after Brexit, Ryanair has warned.

The low-cost airline said aviation should be treated as a matter of urgency in Brexit negotiations, as summer schedules for 2019 must be finalised by March next year.

Without a bilateral agreement being struck with the EU, Britain will have to revert to historic WTO regulations that do not cover aviation, Ryanair said.

The airline added that there was a “distinct possibility of no flights between Europe and the UK” for a period from March 2019.