Finnair (AY) airline code, fares and API for travel agents
- IATA AY
- ICAO FIN
- oneworld
- Full-service
Search Finnair (AY) fares
Finnair airline codes
- IATA code
- AY
- ICAO code
- FIN
- Main hub
- Helsinki (HEL)
- Alliance
- oneworld
- Airline type
- Full-service
- Country
- Finland
About Finnair
Finnair is the flag carrier of Finland and operates from a single hub at Helsinki. Helsinki's northern position has long shaped its strategy, with European passengers connecting there onto flights to Asia, and it also flies to North America and the Middle East. Closer to home it serves Finnish domestic airports, the Nordic and Baltic countries and the rest of Europe. Finnair is a oneworld member. Long-haul flights are sold in Business, Premium Economy and Economy.
IATA.co lists Finnair alongside other airlines when you search a route. Run the search in the booking portal or through the flights API to get live fares, and pay from your prepaid balance when you book. Finnair fares appear in your search results whenever our flight suppliers offer them for your route and dates. The fare rules are displayed before confirmation, which matters here because lighter fares do not include the same services as flexible ones.
Finnair airline codes explained
Finnair uses the two-letter IATA airline code AY and the three-letter ICAO code FIN. The IATA code AY is the one shown on tickets, fare displays and booking screens, while the ICAO code FIN is used in air traffic control and flight planning.
Finnair is a full-service carrier, based in Finland, operating mainly from Helsinki (HEL). It is a member of oneworld.
Booking Finnair fares as a travel agent
Travel agents book Finnair fares on IATA.co without their own IATA accreditation. Activate an agency account, top up a prepaid balance, then search live AY 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. Finnair 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 Finnair (AY) through the flights API
Developers and agencies can run the same Finnair search from their own site, app or back office through the IATA.co flights API. Filter a search by the carrier code AY 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=HEL&destination=DXB&date=2026-12-14&carrier=AY
Host: iata.co
Authorization: Bearer YOUR_API_KEY
HTTP/1.1 200 OK
{
"carrier": "AY",
"flights": [
{ "airline": "AY", "from": "HEL", "to": "DXB", "price": 148.20 }
]
}Example request and response. Carrier codes filter the search; the full reference is unlocked with your API key.
Finnair at a glance
- Flag carrier of Finland
- oneworld member
- Single hub at Helsinki (HEL)
- Business, Premium Economy and Economy on long-haul
Finnair (AY) questions
Finnair's two-letter IATA airline code is AY, and its three-letter ICAO code is FIN. The IATA code is the one you see on tickets, timetables and booking screens.
Finnair's ICAO code is FIN. ICAO codes are three letters and are used in air traffic control and flight planning, while the two-letter IATA code AY is used in ticketing and reservations.
Yes. On IATA.co you book Finnair fares through the platform from a prepaid balance, so you do not need your own IATA accreditation. Finnair 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 Finnair content — including NDC fares — is offered by a connected supplier for your route and dates, it appears in your AY search results and can be booked from your balance or through the flights API.
Yes, when available. Finnair fares appear in your search results whenever our flight suppliers offer them for your route and dates.
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