A crash course in how to fly from the US to Europe for under $200

Hey, blog-o-pals! I thought I would make a nice user-friendly basic guide on how to fly between Europe and the US for under $200 each way, so here it is:

Reliable, dirt cheap, FANCY flights between the US and UK!

Hey all, I just discovered this site that has suuuper cheap flights between NYC/Boston and the UK (as well as other areas of Europe), and it seems to just have these fares all the time (I don't think it's a sale today...?)