CoziGo is designed to fit most airline bassinets. There are a number of old aircraft that carry bassinets that are not appropriate to use with CoziGo. If you are unlucky enough to get a bassinet that CoziGo doesn't fit, take a photo of it and return the unit in unused condition and we will offer a full refund. This is a rare instance and we must be provided with a photo and the item must be unused and in original condition as per our Returns policy.