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Hi,
I have a return flight from JFK to London Heathrow airport. I am flying with Delta airlines and was just wondering what the maximum time before my flight i can check in? Also after i have checked in my luggage am i allowed to leave the airport? I am staying in Michigan but will only be returning to New York on the day of my flight; therefore i was hoping to arrive early and check-in my bags so i could have a couple hours to explore the city.
Thanks for the help