Quickest 1h 6min
There are 2 buses2 train companies operating 9 routes - RE9, RE4, ICE43, RE1, RE5, RB33, ICE10, RB27, ICE 79 from Aachen to Bonn. The cheapest train costs $18 and is 1h 30min.
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There are 3 ways to travel from Aachen to Bonn. 2 buses, 3 trains and 1 by car are possible between the two areas. The by car from Aachen to Bonn is the cheapest. The by car from Aachen to Bonn is the fastest. The train operated by running from Aachen to Bonn is the most convenient.
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!