Extreme temperature pushes airlines to shed fuel, limit passengers

High temperatures pounding parts of the US are forcing airlines to adjust operations in the hardest-hit cities, reducing fuel or baggage — and in some cases shedding passengers — to help aircraft operate.

Allegiant Airlines, a unit of Allegiant Travel, said it will delay flights if there’s a threat to passenger safety or comfort as temperatures in the US Southwest continue to hit records. In Las Vegas, where Allegiant is based, excessive heat advisories have been extended through Sunday, and temperatures have been above 100F (38C) since June 30, according to National Weather Service data.