The cheapest way in. The Slovak Lines shuttle to Nivy is 12 minutes quicker for €0.70 more, which is not worth it at this party size.
Bus 61
61 · DPB, on an IDS BK ticketPickup, hours & luggage
Boards at. The bus stop outside the terminal
EUR 1.20 for a 30-minute two-zone ticket, EUR 1.80 for 60 minutes. Luggage over 60 x 45 x 25 cm needs its own EUR 0.60 "dovozné" ticket, which covers most checked bags, so EUR 1.80 total is the realistic fare. The ticket must be valid before you board.
Luggage. Free only up to 60 x 45 x 25 cm. A checked suitcase needs a EUR 0.60 luggage ticket.
Hours. 142 departures on a weekday and 94 at weekends, with the commonest gaps at five, six and ten minutes. After 23:29 the N61 takes over within half an hour, so there is effectively no break.