Originally Posted by
sophia1
can someone tell me why there is a difference in actual flight times.
AirCanada London UK to Calgary AB - flight time is 8:30
AirTransat London to Calgary - flight time 9:35
Both are direct flights, doesn't make sense to me.
AC and BA block YYC-LHR at 8:35. TS does it in 8:45. Westbound BA is 8:45, AC is 8:50 and TS is 9:25 (all times based on 15 OCT departure).
The 35-40 minute longer block time westbound is likely attributable to the departure time (TS in the morning when LGW is busier so longer taxi times) and the fact that the TS A330/B767 flies slightly slower than the AC & BA 787s/777s on average. The impact of this is magnified westbound with headwinds.
Actual flight times westbound on TS in the past week ranged from 8:30 to 9:23. On AC the range was 8:05-8:49 and BA was 7:58-8:57.