Climate change is doing more than just making the world hotter. It affects weather patterns such as the Northern Polar Jetstream, which is used by trans-Atlantic flights to increase efficiency. It is my project to research the possible effect of the seasonal changes of the Northern Polar Jetstream on the flight efficiency of flights from the JFK airport in New York to the London Heathrow airport in London. I hypothesize that data may show a seasonal shift between speeds at which the airplane approaches the Northern Polar Jetstream, which is important, as that shows that climate change will have a massive impact on the overall efficiency of transatlantic flights.