JetBlue JUST released its next batch of fares (through Jan. 6) last week, so it will probably be at least another month or two before we see another schedule extension.
We flew JetBlue this past February. I was looking through my old emails, and it looks like I booked our tickets in July, and if I remember correctly, the fares had been out for a few weeks when I booked. So I think last year's February fares were released some time in June.
This is all guesswork for me, I don't remember the exact dates, so don't quote me on this.
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