The new service means customers experiencing flight delays of two or more hours with access to 650 lounges in more than 300 airports.

It is free to those who purchase Premier and Premier Plus cover but to qualify customers must register their flight details at least 24 hours before departure.

Rob Clarkson, managing director at Post Office Money Insurance, said: “Over the past 12 months we have been reviewing our existing travel insurance products to ensure they evolve to meet the changing needs of our customers.

“As a result of this we have introduced flight delay assistance, giving customers complimentary access to more than 650 airport lounges across the world if their flight is delayed by more than two hours.

“Whether on a short trip, or flying further afield, a delay can prove frustrating – and far from the relaxing start many of us envisage.

“By providing customers with access to a lounge where they can wait, we hope to make the travelling experience as stress free as possible.”