Delta loyalists are in luck as the flights are affiliated with SkyTeam.

Guadalajara is the countrys third largest metro area, and the capital of the western state of Jalisco.

The only route with no competition is Monterey-New York.

Guadalajara Cathedral in Mexico

Guadalajara Cathedral at dusk in downtown Guadalajara in Jalisco, Mexico.Credit:traveler1116/Getty Images

The iconic tequila brand Jose Cuervorunsan all-you-can-drink tequila train from the city to nearby Tequila.