[s-phi-nl]

To add some data to this discussion, in 2015 FiveThirtyEight found that Delta flights typically took 4 minutes less compared to other airlines, whereas Southwest flights typically took 1 minute more. This takes delays and cancellations into account.

You can see the analysis at http://projects.fivethirtyeight.com/flights/. The explanation, linked to at the top of that page, is at http://fivethirtyeight.com/features/how-we-found-the-fastest....