Roma / Rome to Wien / Vienna by train

OBB is the national rail operator and its booking service offers journeys by express trains within Austria, as well as international journeys which don't involve making a connection outside of Austria.

It pays off to book online, as the discounted 'Sparscheine' tickets are only ever made available on the website, and when making international journeys to and from Austria, these Sparscheine tickets tend to be cheaper.
OBB can offer particularly good value for money when travelling with children on international rail journeys, but something to watch out for when travelling between Austria and Germany on daytime trains, is that reservations are an optional extra; but if you book 1st class tickets with the Germany railways website DB, the reservations are complimentary.

OBB often takes a unique approach to its booking path, but a key thing to keep in mind is that the first price you will see for any journey is that of a Second Class seat.
The costs of upgrading to first class, a reservation, or a sleeping cabin etc, is then added to this price.

Trenitlalia is the national rail operator in Italy and in addition to its cheaper types of ticket; it also typically offers other discounts available to non-Italians, which include:

• Group Offers, provides for a discount of up to 50% when 3-5 Adults travel together.
• Family Offer for when groups of 2 - 5 people are travelling together and at least one of the party is a aged 11 and under.
• The Children Free Offer is available for journeys by Frecce trains, when groups of 2 - 5 people are travelling together and at least one of the party is a aged 15 and under.
  Those aged 15 and under travel for free, but the Adults will need to purchase full price 'Base' tickets.