Published at 1100GMT 10FEB25

Turkish Airlines in recent schedule update filed preliminary changes to its long-haul operations for Northern winter 2025/26 season, effective 26OCT25. Latest service adjustment as of 09FEB25 includes the following.

Istanbul – Atlanta
eff 26OCT25 10 weekly flights in NS25 will be maintained in NW25, 8 weekly 787-9 and 2 weekly 777-300ER
01FEB26 – 02MAR26 Reduce from 10 to 7 weekly

Istanbul – Bangkok Suvarnabhumi eff 26OCT25 TK064/065 787-9 replaces initially filed A330-300 (Overall 2 daily 787-9 and 1 daily A330-300)
Istanbul – Boston 03FEB26 – 02MAR26 Seasonal reduction from 7 to 5 weekly, A350-900
Istanbul – Chicago O'Hare 03FEB26 – 02MAR26 Seasonal service reduction from 14 to 12 weekly (777-300ER/787-9)
Istanbul – Dallas/Ft. Worth
eff 30OCT25 TK191/192 2 of 7 weekly 777-300ER replaces 787-9 (Overall 8 weekly 787-9 and 2 weekly 777-300ER)
01FEB26 – 01MAR26 Reduce from 10 to 7 weekly

Istanbul – Denver Following periods scheduled as 4 weekly instead of 5 weekly, 787-9 operating: 26OCT25 – 04DEC25, 06FEB26 – 05MAR26
Istanbul – Detroit
eff 08DEC25 A350-900 replaces 787-9, 1 daily
03FEB26 – 02MAR26 Reduce from 7 to 5 weekly

Istanbul – Hanoi eff 27OCT25 Increase from 7 to 10 weekly, A350-900 (11 weekly from 07JAN26)
TK164 IST0235 – 1525HAN 359 D
TK252 IST1740 – 0635+1HAN 359 x257

TK253 HAN0815 – 1535IST 359 x136
TK165 HAN2230 – 0540+1IST 359 D

Istanbul – Havana – Caracas – Istanbul eff 10DEC25 Increase from 4 to 5 weekly, 787-9 (Overall Caracas service increases from 7 to 8 weekly)
Istanbul – Ho Chi Minh City eff 26OCT25 Increase from 7 to 10 weekly (11 weekly from 08JAN26)
TK162 IST0250 – 1630SGN 789 D
TK250 IST1710 – 0655+1SGN 359 x136

TK251 SGN0835 – 1600IST 359 x247
TK163 SGN2215 – 0530+1IST 789 D

Istanbul – Houston
eff 29OCT25 TK033/034 2 of 7 weekly 777-300ER replaces 787-9 (Overall 8 weekly 787-9 and 2 weekly 777-300ER)
02FEB26 – 03MAR26 Reduce from 10 to 7 weekly

Istanbul – Kuala Lumpur – Sydney eff 27OCT25 Increase from 5 to 6 weekly, A350-900 (7 weekly from 11JAN26; Overall Kuala Lumpur service increases to 20 weekly, 21 from 11JAN26)
Istanbul – Los Angeles
eff 26OCT25 TK179/180 A350-900 replaces initially filed 787-9 (Overall 1 daily each A350/777-300ER)
03FEB26 – 02MAR26 Reduce from 14 to 12 weekly

Istanbul – Mahe Island (Seychelles) eff 04FEB26 A350-900 replaces A330-300
Istanbul – Manila – Cebu As of 09FEB25, schedules remain unavailable. Cebu is tentatively suspended on long-term basis, based on current listing
Istanbul – Mauritius eff 27OCT25 A350-900 replaces 787-9, 4 weekly
Istanbul – Mauritius – Antananarivo eff 28OCT25 A350-900 replaces 787-9, 3 weekly
Istanbul – Miami eff 26OCT25 Increase from 10 to 11 weekly (4 weekly 787-9 and 1 daily 777-300ER)
Istanbul – Montreal eff 26OCT25 A350-900 replaces 787-9, 3 weekly
Istanbul – Newark 03FEB26 – 02MAR26 Seasonal reduction from 7 to 5 weekly, A350-900
Istanbul – New York JFK 03FEB26 – 02MAR26 Seasonal reduction from 21 to 18 weekly, 777-300ER
Istanbul – San Francisco TK289/290 service changes
eff 26OCT25 A350-900 replaces 777-300ER (Overall 2 daily A350)
03FEB26 – 02MAR26 Reduce from 7 to 5 weekly (Overall reduces from 14 to 12 weekly)

Istanbul – Sao Paulo Guarulhos – Santiago de Chile eff 09JAN26 Increase from 4 to 6 weekly, A350-900 (Sao Paulo service overall increases from 11 to 13 weekly)
Istanbul – Seattle Service operates 5 weekly instead of 7 weekly during following periods, A350-900: 26OCT25 – 01DEC25, 03FEB26 – 02MAR26
Istanbul – Taipei Taoyuan eff 26OCT25 Increase from initially filed 10 weekly to 11 weekly for NW25, 9 weekly 787-9 and 2 weekly 777-300ER (Previous: 7 weekly 787-9, 3 weekly 777-300ER)
Istanbul – Washington Dulles 04FEB26 – 03MAR26 Seasonal reduction from 14 to 12 weekly (777-300ER/787-9)