FlyerTalk Forums - View Single Post - Why does BA take an hour longer than Thomas Cook?

Aug 12, 2008 | 7:19 pm

#10

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Quote:

Originally Posted by KenJohn

Its how much buffer time each airline builds into the time table.
Just ran a quick check on expertflyer on the LHR-JFK route
AA115 Dep 8:30 Arr 11:00
DL4 Dep 8:30 Arr 11:30
BA117 Dep 8:55 Arr 11:20
VS3 Dep 9:30 Arr 12:10

DL gives the longest flight time and BA the shortest with a 35 min differential

The a/c have different cruise speeds which could play a part in those numbers: DL also uses the slowest a/c, a 763 cruises at Mach 0.80 while the 772 AA uses cruises at 0.84. The 744 BA uses cruises at 0.85. Don't have the number for the 346 but it's about the speed of a 772.

Note that BA 173 (772) has a 5-15 minute longer block time than the other BA 744 flights.

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