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Integration and Operations Overview

A young, fuel-efficient fleet also supports a lower cost structure Mainline Fuel Efficiency Average Fleet Age Years ASMs per gallon, Trailing 12 Months 86.5 81.0 75.5 74.1 72.9 70.6 70.2 68.3 66.2 Spirit Alaska Southwest Allegiant Hawaiian JetBlue United American Delta Data as of 3/31/18 5.1 11.4 10.7 10.1 9.2 7.9 14.3 -19 16.7 Spirit Alaska Jetblue American Southwest Hawaiian United Delta Allegiant Data as of 12/31/17 35

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