We recently returned to Bonaire and back with one month on our passports. I wouldn't chance it though. We were lucky that both in Atlanta and Bonaire they just reminded us that our passports were expiring in April. So upon our return to the States we did send for new ones. Customs were great and again just reminded us that the passports were due to expire. Just don't chance it. You may get some grumpy ole power entitled individual along the way that will cause you some delay. Not worth that hassle.