Hello, and I hope I can help you today. First of all, I want to reassure you that air and car/train travel is safe during all trimesters of pregnancy. Flight attendants are even allowed to work until the third trimester. So there is no reason you need to worry about your granddaughter flying while pregnant. However, pregnant women are more prone to getting blood clots in the legs when sitting for prolonged periods of time. So your granddaughter needs to just make sure she stretches and gets up to walk around at least every few hours if she is on a long flight. The only places pregnant women are encouraged not to fly are areas that are at risk for Zika virus infection. This includes most tropical islands and parts of central and south America. You can look at the following website for the complete list- http://www.cdc.gov/zika/geo/index.html But travel to New York, and even a ride in a helicopter, will not pose a risk for the pregnancy. I hope I was able to adequately answer your question today and that my advice was helpful. Best wishes, Dr. Brown