Thank you!
I did fly American Airlines and they were AMAZING! They just LOVED Lillie--the agents were sooo sweet! We bought Lillie a Sherpa bag (pricey but worth it---I think she likes that thing more than her kennel

)
She did GREAT! She never fussed in the airports, she never gave us any indication she was uncomfortable, and she slept the whole time on the plane. I swear I LOVE my dog---she is just a little angel!
I will bring her with me from now on---where every my little feet go, hers go too! =) Thanks everyone!