Miami / Orlando to Brussels $330 r/t

For departures in September and October, you can book the charter air carrier “Jetairfly” for $165 one-way, or $330 round-trip.

http://loyaltytraveler.boardingarea.com/2016/07/01/jetairfly-165-each-way-miamiorlando-to-brussels-sep-oct/

I don’t have any personal knowledge of Jetairfly, but I assume that the seats are pretty close together to put as many passengers as possible aboard the aircraft.