The cheapest way to the airport. The Trøndertaxi, fixed price to Midtbyen is 11 minutes quicker for NOK 640 more, which is not worth it at this party size.
Local train to Trondheim S
Regional · SJ NORD, on AtB's zone A farePickup, hours & luggage
Boards at. Trondheim S, the central station, usually platform 1 — check the board
AtB's zone A single, NOK 50 in the AtB or Entur app, by SMS or at AtB's outlets; children 6–17 and seniors over 67 pay NOK 25, under-6s free. It is valid 90 minutes on SJ NORD's trains, AtB's buses and the tram inside zone A. Bought from the conductor it costs more, by card only. AtB's weekend family discount does not apply on the train.
Hours. Weekdays: 05:09, 06:15, 07:14, 07:49, then hourly at :16 to 23:16, with extras at 14:41, 15:41 and 16:00. Saturday: 07:14 to 15:16 hourly, then 17:16, 19:16 and a last at 21:17. Sunday: 07:49, 09:16, 11:17, then hourly from 13:16 to 23:16.