I’m confused. Last week went to pick up passenger at Jetblue in terminal 1 as indicated on approaching sign. Seems Jetblue is also in Terminal 3. I need to go again in two weeks so which is it 1 or 3.

At the time of this writing, JetBlue is in Terminal 3, but it's uncertain how long they will stay there. It's possible that a particular flight could have been routed to a different terminal - for a variety of reasons - and in such cases the passenger, airline website/agent, or flight tracking website may have more current information regarding departures or arrivals.

A few hrs before the flight, you can also try Googling the flight number for gate information.

You always have to call and check with JetBlue.

It does change ,the best thing is to call Fll the day of the flight and check with flight operations

I saw it in terminal 3....

Could be both

You need to check it out really dear and send message to the UBer telling where are you,I mean the gate number..