Is Southwest padding Schedules for OTP?

UPNAWAY

Veteran
Aug 17, 2005
2,192
685
DALLAS
Looking at April's D0 and A14 stats, I noticed the following deference between the D0 and the A14.
AA +12%, DL +16%, UA +17% SW + 25%

So it would appear that Southwest is adding some serious cushion to their schedules. Are there other factors that could account for this that I am missing?
 
OP
UPNAWAY

UPNAWAY

Veteran
Aug 17, 2005
2,192
685
DALLAS
This would not show turn times. This would only show the flight times. They are gaining 25 point in A14 after taking off.