Austrian Airlines (OS) airline code, fares and API for travel agents
- IATA OS
- ICAO AUA
- Star Alliance
- Full-service
Search Austrian Airlines (OS) fares
Austrian Airlines airline codes
- IATA code
- OS
- ICAO code
- AUA
- Main hub
- Vienna (VIE)
- Alliance
- Star Alliance
- Airline type
- Full-service
- Country
- Austria
About Austrian Airlines
Austrian Airlines is Austria's flag carrier, with nearly all of its flying centred on Vienna. Its position makes it a common choice for connections into Central, Eastern and South-Eastern Europe, and it also flies to Western Europe, the Middle East, North America and parts of Asia. The airline belongs to the Lufthansa Group and to Star Alliance. Long-haul flights are sold in Business, Premium Economy and Economy, and European flights in Business and Economy.
When a client needs Vienna or a connection beyond it, you can check Austrian Airlines on IATA.co. Search live fares in the booking portal, or use the flights API to bring them into your own system. Austrian Airlines fares appear in your search results whenever our flight suppliers offer them for your route and dates. Tickets are paid from a prepaid balance, and the fare rules are there to read before you commit to the booking.
Austrian Airlines airline codes explained
Austrian Airlines uses the two-letter IATA airline code OS and the three-letter ICAO code AUA. The IATA code OS is the one shown on tickets, fare displays and booking screens, while the ICAO code AUA is used in air traffic control and flight planning.
Austrian Airlines is a full-service carrier, based in Austria, operating mainly from Vienna (VIE). It is a member of Star Alliance.
Booking Austrian Airlines fares as a travel agent
Travel agents book Austrian Airlines fares on IATA.co without their own IATA accreditation. Activate an agency account, top up a prepaid balance, then search live OS fares in the booking portal: the price, baggage and fare rules are shown with each offer before you confirm, and the amount is deducted from your balance. Austrian Airlines results appear whenever our flight suppliers return them for your route and dates, so what you can book follows live supplier content rather than a direct airline deal.
Search Austrian Airlines (OS) through the flights API
Developers and agencies can run the same Austrian Airlines search from their own site, app or back office through the IATA.co flights API. Filter a search by the carrier code OS and read the fares back as JSON, then book from the same prepaid balance. See the flights API and the API docs for the full reference.
GET /api/v1/flights/search?origin=VIE&destination=DXB&date=2026-12-14&carrier=OS
Host: iata.co
Authorization: Bearer YOUR_API_KEY
HTTP/1.1 200 OK
{
"carrier": "OS",
"flights": [
{ "airline": "OS", "from": "VIE", "to": "DXB", "price": 148.20 }
]
}Example request and response. Carrier codes filter the search; the full reference is unlocked with your API key.
Austrian Airlines at a glance
- Flag carrier of Austria
- Star Alliance member within the Lufthansa Group
- Hub at Vienna International Airport (VIE)
- Many connections to Central and Eastern Europe
Austrian Airlines (OS) questions
Austrian Airlines' two-letter IATA airline code is OS, and its three-letter ICAO code is AUA. The IATA code is the one you see on tickets, timetables and booking screens.
Austrian Airlines' ICAO code is AUA. ICAO codes are three letters and are used in air traffic control and flight planning, while the two-letter IATA code OS is used in ticketing and reservations.
Yes. On IATA.co you book Austrian Airlines fares through the platform from a prepaid balance, so you do not need your own IATA accreditation. Austrian Airlines fares appear in your results whenever our flight suppliers offer them for your route and dates.
It depends on what our flight suppliers return. Whenever Austrian Airlines content — including NDC fares — is offered by a connected supplier for your route and dates, it appears in your OS search results and can be booked from your balance or through the flights API.
Austrian Airlines fares appear in your search results whenever our flight suppliers offer them for your route and dates. You can search in the portal or through the flights API.
It depends on the fare you book. The baggage terms are shown with the fare rules before you confirm.
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