The cheapest way to the airport. Nothing listed is quicker.
S-Bahn S5
S5 · S-Bahn Hannover (Transdev), ÜSTRA tariffPickup, hours & luggage
Boards at. Hannover Hauptbahnhof, the S-Bahn platforms — the S5 toward Hannover Flughafen
A two-zone (AB) single is EUR 4.70, valid two hours in one direction; children 6–14 pay EUR 1.40, under-6s ride free. The Tageskarte Gruppe for two zones is EUR 17.00 for up to five people until 05:00 next morning.
Luggage. A commuter train with standing room by the doors.