What To Do In Heathrow Airport For 5 Hours:- You have a lot of alternatives for how to spend your five hours at Heathrow Airport. Start by perusing the duty-free stores in the airport, where you may discover speciality presents and expensive goods. Take advantage of the various restaurants that provide a wide range of cuisines and treat yourself to a delectable lunch. Consider getting a massage or having a sleep in an airport lounge if you're feeling worn out. Use the free Wi-Fi to stay connected, or visit the business centres to finish off some tasks. Last but not least, if you have time, stop by the Heathrow Express station to take a short excursion to adjacent sights like Windsor Castle or London's downtown.