Uh, yes they are.eolesen said:Uh, no.
First, WN is a low fare airline, not low cost.
Second, there's no way you can claim they're the smallest when they're the #1 carrier in domestic enplanements.
We can argue the semantics of it but I can find dozens of examples (including the DOT) where WN is considered a Low Cost Carrier.
WN's costs have risen over the past decade and the legacies have lowered costs, so some may claim they are no longer low cost.
I am curious as to when you consider WN ceased to be a Low Cost Airline (year), what metrics are you using and who in the government or business community agrees with your analysis?
Second, Southwest is smaller than the other 3 in every other meaningful category except the one you mention.
I am having trouble posting the links today.
http://www.rita.dot.gov/bts/press_releases/bts044_14
http://en.wikipedia.org/wiki/World%27s_largest_airlines
https://www.rita.dot.gov/bts/sites/rita.dot.gov.bts/files/bts43_14.pdf
http://en.wikipedia.org/wiki/Low-cost_carrier
http://www.icao.int/sustainability/Pages/Low-Cost-Carriers.aspx