The graphs talking about flight speed are pretty nonsensical. The distance is fixed, and they already graphed time, so the only difference here that wouldn't be

The graphs talking about flight speed are pretty nonsensical. The distance is fixed, and they already graphed time, so the only difference here that wouldn't be measured on the previous graph is route differences (assuming they're actually using flown distance and not just straight line distance). The comment: "he metrics from JFK indicate there’s about a 20% drop in flight speed potentially due to wind resistance, which makes sense. " Also shows a lot of ignorance. Air speed doesn't change based on direction, but flying opposite directions sitting in the jet stream definitely does.