Passengers flying to Florida (or anywhere) from London Heathrow (LHR) Terminal 3 can now pre-book security slots ahead of time, free of charge. London Heathrow Airport are currently running a trial that allows passengers to book a time slot for security to save time at the airport. You can make your Heathrow time slot booking up to three days before your departure date. The latest time slot you'll be able to book is 90 minutes before long-haul flights and 60 minutes before short-haul flights. Instructions on how to book can be found on the London Heathrow Airport website.
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