257 — AUSTRIAN
257 is the 3-digit airline accounting code (ticket prefix) of Austrian. Any 13-digit e-ticket number starting with 257 was issued by, or on behalf of, this airline (e.g. 257-1234567890).
| 3-digit code | 257 |
|---|---|
| Airline | Austrian |
| IATA designator | OS |
| ICAO code | AUA |
| Country | Austria |
Austrian airline profile → · All airline codes →
Source: IATA Current Airline Members (public list). Last verified 2026-10-15.