Harvey Weinstein took a trip from L.A. to New York after his conviction on the West Coast ... and he was flown out in first class on the D.A.'s dime.
Sources connected to the case tell TMZ ... Weinstein flew on a commercial airline Wednesday ... with investigators and medical personnel aboard. We're told he was seated in first, and the L.A. County D.A. is picking up the tab.
The D.A.'s Office tells us, "[Weinstein] was returned to New York via a method we typically use pursuant to our extradition agreement with New York."
For context -- the NY Department of Corrections and Community Supervision tells us he's been assigned to the Mohawk Correctional Facility to continue serving his sentence. He was originally at Wende Correctional, but after a review of his treatment needs, they made the switch.
According to its website, Mohawk specializes in sex offender treatment ... among other things.
As for having medical personnel on his flight, HW’s rep Juda Engelmayer tells us he received treatment prior to getting on the flight for medical issues he's had over the years.
You'll recall, Weinstein was sentenced to 16 years in February in his L.A. sexual assault case -- on top of his previous 23-year sentence for a rape conviction out of New York.