I should clarify also then:) My car seat manual says to never rear face on a plane because of FAA regulations. Perhaps it's just that seat- a Graco something or other convertible type.
I have also been told on a flight not to rear face and to turn the seat around front facing because it blocks the aisle- I think that was on a British Airways flight so maybe they have different rules but it does make sense to me. It sounds like the other poster knows her facts and those were just my personal experiences so who knows? I would call the airline.
I also wanted to add that if it were me I wouldn't pay for a seat this time even though she will be two on the return, but I would next time, of course. Happy travels!
I've never had to show id for my kids and we have traveled extensively (except passport for international flights). I guess it would make sense to bring a birth certificate or something in case, but I never have.
I traveled with my kids on my lap for as long as I could. I carried them in a sling and then kept them in it on the flight for security- though they will sometimes ask you to take them out of it for takeoff and landing which doesn't make a lot of sense to me.
I do know that if you take a seat on board you are not supposed to put them rear facing as it blocks the exit path and the seats are not FAA approved for rear facing use on the plane. If you read your car seat's manual it may discuss how to use it on plane, mine says front facing only.
My only other piece of advice is if you bring a stroller and carseat, check them when you check in. They do not count towards your luggage allowance and it is a huge pain in the butt to take the stroller and car seat through security and drag it down the jetway.