Travel during pregnancy is generally considered safe until about 36 weeks for a single pregnancy, with many airlines not allowing travel beyond that point without medical clearance. The best and safest time to travel is usually mid- pregnancy, between 14 and 28 weeks, when energy is higher and the risk of complications is lower. After 28 weeks, the risk of going into labor increases, and comfort and mobility can become issues. For multiple pregnancies (twins, triplets), travel is generally not recommended beyond 32 weeks. It is important to consult with a healthcare provider before traveling, especially if there are any pregnancy complications, and to follow airline policies which often require a 'fit to fly' letter after 28 weeks. Additionally, precautions such as staying hydrated, moving regularly to reduce the risk of blood clots, and knowing the medical facilities at the destination are advised when traveling late in pregnancy. After 36 weeks, most airlines prohibit travel due to the higher chance of labor onset and associated risks.