first jetblue mint flight between jfk and lax
It was to begin on June 15, 2014.
JetBlue Mint
 The first Mint flight, from New York–JFK to Los Angeles, was to begin on June 15, 2014.
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JetBlue Mint [SEP] History
JetBlue's all seven daily round-trip flights between New York and Los Angeles were to feature the service by the fourth quarter of 2014, and all five daily round-trip flights between New York and San Francisco by early 2015. The first Mint flight, from New York–JFK to Los Angeles, was to begin on June 15, 2014. On March 15, 2015, JetBlue announced seasonal expansion of its Mint service to Caribbean routes, with service from JFK Airport to Aruba and Barbados. The service was to operate once daily per destination during the winter holiday season, and once weekly per destination for the rest of the winter season.