我同個女travel within canada 時,坐aircanada graco 嘅stroller and car seat 都冇問題,check in 時car seat 比佢當行李check in, 佢地着provide 個plastic bag 比你張carseat 放入去. 個stroller 就同佢講check in at the gate就ok, 佢地會put a tag or sticker on your stroller.
同個女飛international 時就唔係aircanada, 但係基本都一樣.
Combi stroller 就更加冇問題