We took our DD on a trip to New Zealand when she was 8 months and she had a whale of a time! You will usually have to put your stroller in as oversize baggage but it's usually included free as part of an infant's luggage allowance. It's a great age to travel cause they tend to fall asleep in the plane, they're not running around everywhere, they fit in the bassinette and they're not too big for the change tables. Remember to ask for a bassinette seat if available. If you're hiring a car you can get a car with a baby seat but you might find you have to adjust it, they tend to be installed pretty dodgily IME.
that's all I can think of atm but if I think of more I'll be back... have fun