Bringing a diaper bag on a plane is allowed, but some items are not permitted in the diaper bag. These items include formula, breast milk, ice packs, food, and bottles. In addition, the diaper bag must be able to fit under the seat in front of you. You may also bring a stroller and car seat on the plane. When flying with a baby, know the restrictions for bringing a diaper … [Read more...] about What is Allowed In a Diaper Bag On a Plane?