Is an upgrade possible on the train? Yes, if there are spaces available, you can request a switch to a higher comfort class (e.g. from seating carriage to couchette) against a surcharge from our on-board train team.

Yes, you can technically upgrade your ÖBB Nightjet ticket, but the process is more of a "re-booking" than a simple seat-side upgrade. Nightjet trains (Europe’s extensive sleeper network) are divided into three main categories: Seating Carriage, Couchette, and Sleeper Cabin. If you have already booked a seat and wish to move to a couchette or a private sleeper, you must do so before the train departs, as these specialized compartments are almost always sold out in advance. You can check for availability via the ÖBB website or app and pay the price difference. On the train itself, if a cabin happens to be empty due to a late cancellation, the "Train Manager" may allow you to upgrade for a cash fee, but this is increasingly rare given the high demand for sleeper travel in 2026. If you hold a Eurail or Interrail pass, you can "upgrade" by paying the specific reservation fee for a sleeper or couchette rather than just the seat reservation. Note that if you have a "Sparschiene" (discounted non-refundable) ticket, upgrades are generally not permitted unless you buy a completely new ticket.