I know people suggest bike boxes, but it’ll get transferred between flights half way, so will be handled a lot more than normal, and I’m going to have a lot of bags and a 2 year old to deal with so a bag thats easier to carry around the airport than a box would be nice.
The assumption that a bike bag is easier to handle around the airport is a total misnomer. From experience of mine & friends who use them, they are a total pain in the arse. It’s far easier to get a standard box, upend it and stick it on a trolley with everything else, rather than a rucksack, hold bag & a bike bag.
I have an Evoc bag, which I use because I have it already. To be fair it’s lasted well & it’s been used a lot. But it’s a pain to fit a reasonable sized bike in (with 29″ wheels) & it ends up on a trolley, sideways because of the above. It fits through even less gaps as it’s a 5ft wide roadblock, and despite being massive & red, everyone walks into still.
If it breaks, or goes missing, i’ll be replacing it with a cardboard box.