I usually book flights to France and Brazil once or twice a year. Usually comes at around $800 per head. This year, i cant find anything at less than $1400 for Brazil and $1200 for Paris (out of Chicago). I searched for flights in July/August/Sept even November and even March of 2018. No major events in Rio this year, gas is cheaper than 2016 and dollar still strong so no reason for the 100% increase. What am i missing?