Airlines are cancelling flights on September 11 because of low bookings.
British Airways has cancelled 26 flights to and from the US, and one return flight to Barbados. Most of the cancellations effect cities with multiple services, ie out of 3 services to Boston, 2 will be cancelled.
A spokesperson said: "Bookings are low on several US routes. Understandably, some people are choosing not to fly on the anniversary of the tragic attacks in the United States."
Despite those cancellations, BA will be operating 368 flights out of Heathrow and Gatwick on September 11, flying thousands of people across the world.
Customers booked on the cancelled flights will be accommodated on other flights to the same destination that day.
American Airlines and United Airlines in the US are also making unspecified cancellations to their flights on September 11 due to weak bookings. Delta is also trimming flights between September 9 and 13.
Air France said it has also decided to cancel two flights on September 11, one Paris-New York return flight and one Paris-Washington return flight, due to lack of reservations for that date. SAS also said it has cancelled two out of its three flights to New York on September 11.