Around 10,000 seats will be lost on flight routes to and from the Isle of Man over the summer period.
That's according to TravelWatch which says 350 seats each day - between Ronaldsway and the South East - will be scrapped between June and September:
It says the reduction in capacity comes as airlines look to cash in on more profitable routes.
It's now urging people to book well in advance to secure the seats and best rates available - Terry Liddiard is from the passenger watchdog:
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