There are 2 train companies operating 4 routes - ICE10, CNL 1258, SE10, ICE50. The cheapest train costs $39 and is 4h 33min.
Faretrotter is a travel aggregation resource that gathers travel company amenities and statistics and compares modes of transportation between cities. Use Faretrotter to plan your next trip, or purchase a ticket your next city.
There are 3 ways to travel from Koblenz to Erfurt. 2 trains, 4 buses and 1 by car are possible between the two areas. The by car from Koblenz to Erfurt is the cheapestand most convenient. The by car from Koblenz to Erfurt is the fastest.
It's important to check each mode when booking your ticket so that you can find the best method for you. The cost of each type varies differently, so be sure to use Faretrotter to keep an eye out!