Pregnancies last on average 40 weeks. For uncomplicated pregnancies, THAI has imposed certain guidelines for travelling expectant mothers, as follows:
• After the 28th week of pregnancy, passengers must obtain a medical certificate of fitness to travel issued by their attending obstetrician, stating the number of weeks of pregnancy and estimated date of delivery. The medical certificate issued by the doctor must be issued no later than 7 days prior to departure, which must be carried with the expectant passenger when boarding the flight.
• For safety reasons, THAI reserves the right to deny boarding under certain circumstances if expecting passengers choose not to carry a medical certificate.
• Expectant mothers may be permitted to travel up to the end of the 36th week of pregnancy on flights less than 4 hours (the estimated date of delivery being 4 weeks or more).
• On flights more than 4 hours, expectant mothers may be permitted to travel up to the end of 34th week (for pregnancies with the date of delivery estimated at being 6 weeks or more).
• Expectant mothers whose pregnancy has entered beyond the 36th week of pregnancy will not be permitted to travel due to safety reasons.