Mr. ISTFlyer is proud to book a reservation on hold for the first ever scheduled TK 787-9 to Antalya on 8 Jul.
I would ( %95 ) be flying TK 2410 on 8 Jul 2019 in Biz and TK 2439 back to IST, the same day ( currently on Biz but could change to Eco ).
Of course this is subject to change so I would book changeable tickets.
Thanks to Airlineroute which indicated that 787-9's would be used for the Antalya route during the summer.