They usually allow up to 32 weeks with fit to travel certificate. I think they will not let you fly once you have reached 36 weeks as you may go on labor anytime (even if you have a scheduled cs). You have to inform your OB of your plans. Contact the airline about their restrictions for pregnant passengers. The airline will have you sign a waiver that they will not be held liable for anything and if anything happens to you while on flight, you will reimburse all expenses to them.
basta may note yata form tour doctor na safe for travel ka ok lang po