657 — AIR BALTIC
657 is the 3-digit airline accounting code (ticket prefix) of Air Baltic. Any 13-digit e-ticket number starting with 657 was issued by, or on behalf of, this airline (e.g. 657-1234567890).
| 3-digit code | 657 |
|---|---|
| Airline | Air Baltic |
| IATA designator | BT |
| ICAO code | BTI |
| Country | Latvia |
Air Baltic airline profile → · All airline codes →
Source: IATA Current Airline Members (public list). Last verified 2026-10-15.