Star Alliance airlines have Miami to Paris, France on sale priced at $431 to $460 for travel on a few dates in April and May 2017, then many dates beginning mid-August through January 2018. These are primarily United and Air Canada flights.
United Airlines ticket Miami MIA – Toronto YYZ – Paris CDG (Air Canada) – Newark EWR – Miami MIA (United)
$434.86 round trip Wed Sep 6 – Wed Sep 13
United Airlines ticket Miami MIA – Chicago ORD – Paris CDG (United) – Brussels BRU – Toronto YYZ – Miami MIA (Brussels Airlines)
$430.86 round trip Tue August 15 – Tue August 22