Turkish Airlines finalized an agreement to purchase up to 150 Boeing 737 MAX aircraft.
The deal includes a firm order for 100 737-8 jets.
The airline holds options for an additional 50 aircraft.
This agreement marks the carrier's largest-ever single-aisle order with Boeing.
Turkish Airlines selected the American manufacturer over European rival Airbus.
The decision concludes negotiations that began in 2025.
The airline previously considered Airbus models amid disputes over engine pricing.
This order represents a significant competitive win for Boeing.
The deal secures a key regional customer for Boeing's best-selling aircraft family.
The fleet expansion supports Turkish Airlines' growth strategy at its Istanbul hub.