Two-character marketing code used before passenger flight numbers, for example TK1983.
TK
Turkish Airlines code: TK, THY
and 235 ticket stock.
Marketing carrier, operating carrier and through-ticket checks. Use the identifier map to separate the marketing code on a flight, the operational ICAO designator and the carrier that issued the passenger ticket.
TK is the IATA flight designator.
THY is the ICAO operational designator.
235 is the passenger ticket-stock prefix.
Evidence reviewed 31 August 2026 · source linked belowTurkish Airlines: TK, THY and 235 are not interchangeable.
Each code answers a different question. The document context is part of the answer.
Three-letter operational designator. The associated callsign shown in operational contexts is “TURKISH”.
The first three digits of a 13-digit passenger ticket issued on Turkish Airlines stock.
The same digits can appear in cargo context; document shape decides the layer.
SOURCE CHECK Ticket-stock guidance is linked to an airline or IATA source. Identifiers can be reassigned; verify an unfamiliar document before relying on it. Turkish Airlines ticket guidance ↗
02 / EVIDENCE STACK
Read the offer in the correct order.
- 01MARKETING CARRIER
The code printed first.
A TK-coded flight can still be operated by another airline. Treat the flight number as the commercial label, not final proof of the aircraft operator.
- 02OPERATING CARRIER
The airline after “operated by”.
This line is the decisive clue for the physical flight, onboard product and many day-of-travel processes.
- 03TICKETING CARRIER
The contract issuer.
The ticket number prefix and receipt identify the commercial record that changes and refunds may need to follow.
- 04FARE FAMILY
The rule set—not the cabin name.
Two economy offers can carry different baggage, seat, change and refund conditions. Compare the named fare family on the final payment screen.
03 / CHECKOUT CONTROL
Seven lines to capture before payment.
Save a screenshot or confirmation PDF that visibly includes each item. The record is useful if a seller later presents the itinerary differently.
01Full flight number and date□
02Exact “operated by” wording□
03Origin and destination airport codes□
04Fare family name□
05Checked and cabin baggage wording□
06Change and refund summary□
07Single-ticket or self-transfer disclosure□