Babylon 5 is one of a host of WB shows that will be streaming on Verizon's Go90 app starting April 4th according to this article.
I just signed up for the service. I watched an episode of Schitt's Creek. It was free on Wifi and commercial free. Nothing comes up yet when you search B5. The two negatives for me were that two years later they only have one season of Schitt's Creek, so that makes me question how much of B5 they'll be showing despite the fact the article indicates "All Seasons". I am hoping it is true and they have "All Seasons." Also there was a little graphic you couldn't get rid of in the lower right hand corner of the screen. Still the show is on a streaming service once again, so if you love B5 spread the word and start watching tomorrow.
Correction: Babylon 5 is once again on a streaming service that you don't have to pay-per-episode.