Best Chihuahua pet carrier I’ve ever seen!

I'm lucky enough to be going to London, Ontario next year for a couple of months to perform in a theatre play and Farfl's coming too! I'll be travelling between London and Toronto mostly using the train so I've been searching high and low for a good bag to carry Farlf in. Her hard-sided carrying crate is a bit unwieldy to shlep around with a suitcase! All the carriers I've looked at have been too...