Helsinki-Vantaa Airport (Finnish: Helsinki-Vantaan lentoasema, Swedish: Helsingfors-Vanda flygplats) (IATA: HEL, ICAO: EFHK), or simply Helsinki Airport, is the main international airport serving Helsinki, the capital of Finland, as well as its surrounding metropolitan area, and the Uusimaa region in Finland. The airport is located in the neighbouring city of Vantaa, about 5 kilometres (3 mi) west of Tikkurila, the administrative centre of Vantaa and 9.2 NM (17.0 km; 10.6 mi) north of Helsinki's city centre. The airport is operated by state-owned Finavia. The facility covers a total of 1,800 hectares (4,448 acres) of land and contains three runways.

The airport is by far the busiest in Finland (with 20 times the traffic of the next-busiest, Rovaniemi) and the fourth busiest in the Nordic countries in terms of passenger numbers. About 90% of Finland's international air traffic passes through Helsinki Airport. In 2023, Helsinki Airport had a total of 15.3 million passengers, 88% of whom were international passengers and 12% domestic passengers. On average, the airport handles around 350 departures a day.

The airport is the main hub for Finnair, the flag carrier of Finland, and its subsidiary Nordic Regional Airlines. It is also a hub for CityJet (on behalf of SAS) and an operating base for Jettime, Norwegian Air Shuttle, Sunclass Airlines and TUI fly Nordic.