ZSSK is operating night trains between Bratislava and eastern Slovakia on the following lines:
R 614 Zemplín (Humenné – Žilina – Bratislava hl. st.)
R 615 Zemplín (Bratislava hl. st. – Žilina – Humenné)
R 800 Poľana (Prešov – Zvolen – Bratislava hl. st. – Bratislava-N. Mesto)*
R 801 Poľana (Bratislava-N. Mesto – Bratislava hl. st. – Zvolen – Prešov)*
*R 800, 801 are not operating on Saturdays and Sundays and the following days: 10./11., 12./13.IV., 1./2., 8./9.V.
direct car EN 442 Slovakia/RR 704 Polom (Košice – Žilina – Bratislava hl. st.)
direct car RR 717 Dubeň/EN 443 Slovakia (Bratislava hl. st. – Žilina – Košice)
You can get a more convenient price with SLOVAK EXPRES ticket.