Two F-15 fighters were scrambled to escort flight 787 with 179 passengers and nine crew on board, after a woman handed a flight attended a note saying that she had a bomb surgically implanted in her.
Passengers were not aware of the two fighter jets because they were advised to keep their shades down during a film, said Stuart Frankel, from Baltimore.
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Philip Hammond has dismissed concerns that abolishing stamp duty for first-time buyers will push up house prices.
Elsewhere it will be largely sunny, though with gusty winds at times, and a few showers likely in places.
Heavy rain has caused widespread flooding and travel disruption across north west England and North Wales.