Name one international passenger airport located in the north of England.

Newcastle International Airport is the correct choice because it is a major international passenger airport located in the north of England, serving the city of Newcastle upon Tyne and the surrounding regions. It plays a vital role in connecting passengers to various domestic and international destinations.

Heathrow Airport, Gatwick Airport, and Stansted Airport are all situated in the south of England, with Heathrow being one of the busiest airports in the UK, located to the west of London, Gatwick being south of London, and Stansted to the northeast of the city. Therefore, when specifically looking for an airport in the northern region, Newcastle International Airport is the only option that fits this criterion.