Revisiting this issue because the article from June about Tradewind's new service was reprised yesterday (https://www.caribjournal.com/2023/0...m_term=0_ea4e1e4090-2a33a2d1ab-190149032), so just for fun, I did a search on both Cape Air and Tradewind's sites for a round trip fare from SJU to VIJ leaving on Monday, November 27 and returning on Monday, December 4; neither airline is "giving it away" as they say, but the fare comparisons showed Tradewind's to be much better for travelers.

I'll try to upload screenshots, but Cape Air's fares were ~ $600 each way (for the non-refundable) whereas Tradewind's were ~ $400 each way, with one outbound fare from SJU to VIJ being $442.