Iin the same outfit she departed London in, the young star still managed to look effortlessly fresh despite the eight-hour flight.
Relaxed and smiling, the 21-year-old actress was dressed in a pair of black skinny jeans a brown trench coat, a black trilby hat and her favourite Zadig et Voltaire 'Ailes Strass' ballerinas.
Taking the magic across the Pond: Emma Watson arrives at JFK airport in New York City for the Harry Potter and The Deathly Hallows: Part 2 premiere
Emma will also meet up with Rupert Grint, who landed in 'The Big Apple' hours before her, and the pair will then watch boy wizard co-star Daniel Radcliffe performing on Broadway.
How does she do it? Emma looked fresh-faced and ready for work after her long-haul flight
Senior bosses at Warner Bros are reportedly angry that Radcliffe has been unable to promote the final film fully despite being the leading man for the last ten years.
Rupert Grint is mobbed by Harry Potter fans as he arrives in New York
This was particularly embarrassing for ‘incandescent’ studio bosses, since everyone else from the film, including co-stars Emma Watson and Rupert Grint, plus Ralph Fiennes, Michael Gambon and Robbie Coltrane, was present.
Emma, who couldn’t help but break down in tears as she and her co-stars attended the premiere in Leicester Square, wore a pair of black Ray Ban Wayfarers, perhaps hiding the effects of the Potter after-party at Old Billingsgate Market in London.
Best friends forever: Rupert Grint, Emma Watson and Daniel Radcliffe attend the World Premiere of Harry Potter and The Deathly Hallows - Part 2
It had certainly been a night of mixed emotions for the starlet who was seen crying and laughing throughout the evening.
As she joined her co-stars on stage to speak to the huge crowds that had gathered in Trafalgar Square to see the gang together for the final time, Emma broke down in tears as she said her thanks. The actress, who brought the character of Hermione Granger to life on screen said: ‘It’s overwhelming to try to find the words to say what I want to say, but I have been so privileged to play this role and be a part of these films.'
Leaving London: After a short stay in the U.K. Emma headed to Heathrow after leaving her hotel earlier today
And after jetting into London for a few days to conduct interviews and to attend the premiere itself, Emma hadn’t planned to stay in the U.K. for long heading straight to Heathrow airport.
As the cast made their final premiere call at walking the red carpet from Trafalgar Square to the cinema in Leicester Square on Thursday Emma wowed the crowds in a floor-length ice blue Oscar De La Renta Gown.
Glittering girl: The actress had decided to wear a stunning Elie Saab gown to the Harry Potter after-party change out of the dramatic Oscar De La Renta gown she had donned for the premiere on Thursday night
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