The tour operator will be giving priority boarding passes to all customers that have booked a package holiday. However, flight-only customers will not benefit from the fast track procedure at Zaventem Airport, near Brussels.
Previously, the airport's "fast lane" was the preserve of business class passengers. For a fee Ryanair also offers its passengers the chance to board via the "fast lane".
Thomas Cook's spokesman Baptiste Van Outryve told the daily 'Het Nieuwsblad' that "Waiting times are a major source of stress for our customers".
The company that runs Zaventem, Brussels Airport, has confirmed that it has a deal with Thomas Cook to reduce the tour operator’s customers' waiting times. "The company is paying for it, just as other companies pay for their business passengers."