JetBlue, Southwest and Alaska shifted most toward bigger planes over the past decade and a half, while several carriers went the other way.
Conditions and method
Data run through 2024.
Carrier upgauging index
US
Carrier upgauging index
Available seat-miles per block hour as an index of each carrier's own first year in the data; carriers in descending order of fleet size in 2024, and a blank cell is a year with no usable value for that carrier
Data through 2024
View data table
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