The Post Office claims to be the first major high street provider to offer flight delay assistance cover as part of its travel insurance offering.
Customers who suffer flight delays of two hours or more will be provided with access to 650 lounges in more than 300 airports.
The service is free to customers who purchase the Post Office’s Premier and Premier Plus cover.
To qualify, travellers need to register their flight details at least 24 hours before departure.
Flight delay assistance has been introduced following feedback from customers who felt they needed extra cover should their flight be delayed.
More than three million people travelling in and out of the UK are estimated to have been impacted as a result of delayed flights last year.
Post Office Money Insurance managing director Rob Clarkson 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.”