Abstract: Introduction: whether they are occasional, frequent travelers, or are part of the flight crew, is no longer uncommon to meet pregnant women on flights, because air travel has become very common and accessible. Objective: study the different risks that pregnant women are exposed to during commercial flights, because traveling during pregnancy raises the question of safety for the fetus and the pregnant woman.Methods: Using the PUBMED database, a review of the literature was carried out, including articles from the 2000s to the present, with a search using four keyword combinations, which allowed us to collect 35 articles only in English. Results: Four main risks were identified. The ionizing risk due to cosmic radiation that exposes the risk of cancer and injury to DNA. The thromboembolic risk which is multifactorial and depends on the duration of flight, physiological changes in pregnancy and physical constraints related to flights.The risk of complicating pregnancy outcomes: premature birth, malformation, low birth weight, metrorrhagia. Finally, the physical risks associated with flights do not expose to particular complications. Conclusion: Until 36 SA, Flight do not pose any particular problem. Care should be taken not to exceed a certain number of flying hours in order not to overexpose the fetus to ionizing radiations. Simple physical measures are sufficient to prevent the thromboembolic risk except in pregnant women with comorbidities, an anticoagulation will be discussed.