Iberia allows you to travel while pregnant, although like all other airlines belonging to IATA (International Air Transport Association) we advise against flying if you are more than 28 weeks pregnant and up to 7 days after giving birth. IATA advises against flying after the 36th week of pregnancy (32nd week in the case of a multiple pregnancy without complications). If you still need to fly, you must show a certificate from your doctor at the boarding gate. You can find all the information you need under Travelling while pregnant.