HPAEAA wrote:jagraham wrote:How are you defining focus city? Sfo only sees hub flying these days and BOS might be considered with the couple of eagle routes and Saturday non hub flying, but compared to the “focus city” definition used at DL, UA it’s a stretch... putting that aside though I am curious what data you used to get to the 80 & 90% of trip numbers, I can’t quite rationalize that 90% of trips in the US originate or end at one of the top 10 MSA/CSA, the population is too spread out.HPAEAA wrote:It is CSA. SFO and BOS are focus cities. IAH is the missing CSA.Not to start anything, But what data do you have to support the 90% assertion and 80% assertion? Also, how are you defining metros? I count 7 of 10 by MSA/CSA definitions and less by pure city populations. Gaps on the csa front are SFO, HOU, BOS.
SJC was a hub then focus city for AA. I can't find any current non-hub flying from the Bay are on AA. I was surprised AA no longer even flies SJC-SNA or SJC-AUS.
According to Wikipedia, SFO is not in the top ten MSA estimates for last year but ATL and HOU are.
https://en.m.wikipedia.org/wiki/List_of ... ical_areas
It's possible he's conflating O&D trips with segment trips and/or estimating 90 percent, where the latter is mostly irrelevant for a network carrier from a revenue perspective. If he is estimating O&D trips, I think he is way off. LAS and MCO are two of the largest destination markets in the US and are not in the top ten MSAs. It's hard to imagine less than 10 percent of air travel doesn't include these and other large to medium sized MSAs to or from other MSAs outside his top ten list.