How does density altitude affect Taxi-Out Time?

Question

To keep things brief, for a data exploration project, I calculated density altitude for a couple airports and used flight statistics from https://www.transtats.bts.gov/ONTIME/Departures.aspx.

I was under the assumption that a higher density altitude is bad for performance and would involve things like longer takeoff time which can prolong taxi out time(from gate to runway) since a plane in line would have to wait longer for earlier planes to takeoff. Is this true?

Or is there pretty much such a minuscule difference that density altitude shouldn't matter in the context of taxi out time?

Answer 1

The time between takeoffs on a given runway is a function of wake turbulence separation from the preceding aircraft, though wake turbulence avoidance times can often be waived by the pilot in command (depending on operating procedures). Takeoff separation time is calculated based on aircraft type/weight.

An increase in density altitude could determine whether or not the aircraft can do an intersection takeoff, which in some cases could increase taxi time.