I've gone to the online website that was recommended here. I'm trying to buy 2 2nd class tickets on the 639am train from Prague to Vienna on 4/4 When I get to seat selection and look on train confirguration,seats look available but nomatter what seat I pick, they say it is unavailable. Do I need to book each ticket individually. It looks like I can get one but I'm afraid I won't be able to book the next ticket on a separate transaction.Any help would be appreciated.

You'll need to give a link to the train site since there are many train sites mentioned or recommended here. There is no way anyone can know which site you mean unless you tell us.

If you can't get the info you need here have a look at this site which I've used to plan a forthcoming trip to Europe:

http://europetrainsguide.com/forum/index.php

They seem to know just about everything to do with trains in Europe and I have found them very helpful.

Since the train is from Prague to Vienna, I would assume dac was directed to the Czech railways website, www.cd.cz.

You can navigate through that site to the Prague-Vienna section https://eshop.cd.cz/international/search_cd-obb.aspx

I'm also seeing that no seats are available on the 6:39 train. It is possible that it's sold out, given that it's Easter Sunday. There are tickets for the 8:39 departure, cost is 502 Kč (Czech crowns) or 19 euro each.

My recommendation is to buy the 8:39 train tickets, then see if you can switch your tickets for the 6:39 when you get to Prague.

When I go to the seat selection page I see only a few 2nd class seats already taken. My guess is there's some bug in the system that's preventing you from booking the 6:39 train.

You can email them at Czech Railways Contact Centre [email protected].