Originally Posted by
Bakpapier
You can buy an InterRail train pass, for example, and just train all around europe.
Those aren't the deal they used to be. Often cheaper to buy individual trips. OK, usually.
Originally Posted by
Romelle
There even are trains specifically scheduled to work well as an overnight bed. Thus saving the cost of a hotel, and getting your body moved while you sleep.
And don't forget the bus systems. Lots of other good lines, but Flixbus can have some amazing rates. And the buses can have the same advantages as the trains.
Buses tend to be the cheapest form, though not as comfortable as train, but about equal to crammed planes. But two by two seating, so no middle seats on buses ^
And as per European Rail Forum, a lot of overnight trains have been taken off schedule, possibly due to competition from LCCs.