AY
Abbreviation with 3 meanings
| Stands for | Finnair |
|---|---|
| Meanings | 3 |
| Categories | Transportation & Travel, Business & Finance, Education & Academia |
AY has three meanings. The most common are Finnair (airline code) and Assessment year (tax); it can also stand for Academic year.
Meanings of AY at a glance
| # | AY stands for | Context |
|---|---|---|
| 1 | Finnair | Transportation & Travel › Airline Code |
| 2 | Assessment year | Business & Finance › Tax |
| 3 | Academic year | Education & Academia › Academic |
1. Finnair
Transportation & Travel · Airline Code Abbreviations
Finland's national airline, based at Helsinki Airport and a member of oneworld. Its network was built on short great-circle routes between Europe and East Asia over the Arctic.
Example: AY 5 from Helsinki to Singapore had to reroute south after Russian airspace closed.
ICAO code FIN; callsign "Finnair." The IATA code AY comes from Aero O/Y, the company's original name when it was founded in 1923. The closure of Russian airspace to EU airlines in 2022 forced Finnair to restructure its Asian network around longer routings.
2. Assessment year
Business & Finance · Tax Abbreviations
In Indian income tax, the 12-month period starting April 1 in which income earned during the previous financial year is assessed and taxed. Income for the financial year April 2025 to March 2026, for example, is reported in assessment year 2026-27.
Example: Make sure you select AY 2026-27 when filing for income earned in FY 2025-26.
Choosing the wrong assessment year is a common filing error. India's Income-tax Act, 2025, effective April 2026, replaces the separate "previous year" and "assessment year" with a single "tax year."
3. Academic year
Education & Academia · Academic Abbreviations
School year used in university calendars, catalogs and budgets, usually running from late August or September to May or June and written with both calendar years, as in AY 2026–27. Financial aid award years run from July 1 to June 30.
Example: Tuition rates for AY 2026–27 will be announced in February.
Some institutions align their fiscal year with the academic year, while others do not. In the UK, the academic year typically starts in September or October. Writers should state the convention when they abbreviate a two-year span.
Related abbreviations
More airline code abbreviations
- AI – Air India
- AM – Aeroméxico
- AS – Alaska Airlines
- AV – Avianca
- AZ – ITA Airways
- B6 – JetBlue
- BA – British Airways
- BR – EVA Air
See all 60 airline code abbreviations →