I thought the first season was good - not great, but good Entertainment. The second season is weaker, but still worth watching. In the second season, this episode is one of the better, although it actually has little to do with time travel: the young JFK has to be brought into the present, but can escape. The team is looking for him while JFK meets today's world. It's funny and exciting at the same time.
In addition, it is a change from the other episodes, which are mostly very similar and therefore sometimes become a bit boring. The illogical plot holes are still annoying anyway.
Flynn's appearance at the end is short but great. A good figure!