AIR CANADA 0 s1 b1 ^! i* u; a ' h* r* t: w; _5 X& NEffective April 10, 2013, check-in and baggage acceptance for flights within Canada will close 45 minutes prior to departure – with the exception of flights leaving from Toronto’s city airport (YTZ), where check-in and bag drop-off will remain available until 20 minutes before departure. 3 [$ v+ Y5 J3 w$ Z1 F3 S 8 b$ r* o) s1 ~2 M" IWe invite you to check in online or with your mobile device at any time within 24 hours of flight departure, and to familiarize yourself with our check-in and boarding gate deadlines to allow for a smooth travel experience. ; @" I( A4 p, E1 T; b这封信是什么意思,我英语不好,所以有英语好的大侠帮看一下。