In our practice, the question arises as to whether a pregnant woman with one of these problems may travel.
With a placenta previa, since a major hemorrhage can occur any time the cervix starts to dilate, we usually advise that the patient never travel far from a medical center where emergency c-section and blood transfusion are immediately available. No one wants a massive bleed to happen in a moving vehicle, whether by land or air. An exception to our rule might be a pregnant woman who is living in a place remote from medical care. It would be wiser for her to travel early in pregnancy to a place where these modalities are available.
Although a placenta accreta is less apt to bleed prior to delivery, the same precautions apply. Also, since the placenta is attached abnormally, it may start to become detached from the uterus prior to or early in labor (placental abruption), again requiring emergency intervention.
In these conditions, taking the appropriate precautions will go a long ways to ensure a healthy outcome.
Safe travels… until next time.