Quickest 3h 2min
There are 4 buses2 train companies operating 2 routes - Cross Country, MML from Cardiff to Luton. The cheapest train costs $74 and is 5h 30min.
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There are 3 ways to travel from Cardiff to Luton. 4 buses, 3 trains and 1 by car are possible between the two areas. The by car from Cardiff to Luton is the cheapest. The by car from Cardiff to Luton is the fastest. The train operated by running from Weston-super-Mare to Luton 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!