For London-Chicago flights, you can use City Airport, Gatwick Airport, Heathrow Airport, Luton Airport, Stansted Airport, Windsor and Eton Central Railway Railway Station, Euston Railway Station, King's Cross Railway Station, Paddington Railway Station, St Pancras Railway Station, Tottenham Hale station Railway Station, Victoria station Railway Station, Waterloo International Railway Station as departure airport, and Chicago Nas Airport, Chicago Rockford Intl. Airport, DuPage Airport, Gary International Airport, Merrill C Meigs Airport, Chicago Midway Intl. Airport, O'Hare Intl. Airport, Chicago Executive - Palwaukee Municipal Airport for arrival.