(AP) -- CHEEKTOWAGA, N.Y. (AP) - Delta Air Lines is adding service between New York's LaGuardia Airport and the upstate cities of Buffalo, Syracuse and Rochester.

The new flights begin Sunday. They're part of a major expansion by the Atlanta-based airline at LaGuardia.

Delta's adding six daily flights to Buffalo Niagara International Airport, five daily flights between LaGuardia and Syracuse's Hancock International and four daily flights between Greater Rochester International and LaGuardia.

They'll operate on regional jets that offer first class as well as economy and in-flight Wi-Fi.

Delta didn't fly between LaGuardia and the upstate cities last year.

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