AER Lingus is cancelling one of its flights from Shannon Airport to Heathrow every day this week because of a temporary cap on passenger numbers at the London airport.
It means that the daily 7.20pm service, the last flight between the two airports, will not operate this week.
With a daily limit of 100,000 passengers from July 12 to September 11, management at Heathrow has ordered airlines to “stop selling summer tickets to limit the impact.
A spokesperson for Aer Lingus said that flights to Heathrow, both one-way and return, will continue to be cancelled every day until Sunday.
“Aer Lingus deeply regrets the impact these mandated flight cancellations, which are entirely out of our control, are having on our customers.
“We will look to minimise disruption to passengers by reallocating them to one of our other flights out of Heathrow where possible,” the spokesperson added.