Kerava is served by Helsinki commuter trains, with 3 faster R,H and Z trains/h (20 min from Helsinki) and 5 K trains/hour (35 mins from Helsinki). The railway station is right next to the town center. The Finnish Rail commuter traffic section  has route maps and timetables online.
All international and domestic flights to Helsinki land at the Helsinki-Vantaa International Airport  (IATA: HEL), 15 kilometers to the south-west of the town. From airport to Kerava, take the line 61 bus to Tikkurila and change for a Kerava-bound commuter train. Travel time to Kerava from the airport is about 45 min.
There are no hotels in Kerava. The nearest ones are at: