The cheapest way in. Nothing listed is quicker.
P train and tram 5
P5 · VR for HSL, then HSL, on one HSL ticketPickup, hours & luggage
Boards at. Lentoasema station beneath the terminal, platform 1
The same ABC single as the train alone: EUR 4.50 on the HSL app, EUR 4.80 at a machine or by contactless, valid 90 minutes across every HSL mode. Train and tram together take about 43 minutes, well inside that window.
Luggage. A commuter train, then an ordinary street tram; no racks on either.
Hours. Tram 5 stops for the night well before midnight, at about 22:53, and starts again about 05:36 — hours short of the trains, which run to about 01:22 and from 04:52. Outside tram 5's hours, a taxi is the only way to Katajanokka.
