I think I'm going to give it a try. I'm flying Business with an infant. Recently we sent our childrens' golf bags (which could and have fit into a suitcase) separately as sporting equipment and they didn't make a fuss. So hopefully they won't give me a hard time. If they do I could probably combine my diaper bag with it and carry it on (my husband carried on tennis bags without an issue may times) or gate check it with the stroller.