I insist for them to take the BRU flight from JFK.

Actual available is 2 in Biz and 28 in coach on the 17th.

For the 18th there are 2 in Biz and 15 in coach.

IMHO, you picked up very difficult days to travel on buddy passes. I DO NOT recommend to travel on weekends on those type of tickets and moreover that the summer is around the corner. Keep in mind is PEAK season.

Flower