Frankfurt am Main Airport (FRA) to Karlsruhe Hbf bus with FlixBus

FlixBus is one of Europe's leading low-cost bus companies, founded in Germany and offering long-distance bus services in Europe and the U. S. FlixBus also operates overnight buses on select routes throughout Europe. Standard amenities on FlixBus include free Wi-Fi, power outlets to charge your phone, tablet or laptop during long bus journeys, extra legroom, luggage space and toilets. You can even purchase snacks and drinks onboard. FlixBus offers only the Standard ticket for all its routes, which allows you to bring one carry-on luggage and one checked bag per person. Additional fees apply for extra luggage and specific seat reservations, such as if you want to book an Extra Seat, Table Seat or the Panorama Seat.

BlaBlaCar Bus (formerly known as Ouibus or iDBUS) is a popular French bus company from France operating long-distance services in 10 countries in Europe and connecting over 300 destinations. It is a subsidiary of the French carpooling service, BlaBlaCar. Standard amenities on BlaBlaCar Bus include toilets, air conditioning, USB and power outlets for charging phones, tablets and laptops during long bus journeys, extra legroom and adjustable seats. There is also free Wi-Fi available on select routes. The only ticket type from BlaBlaCar Bus is the Standard ticket, which allows each traveler to bring one carry-on bag and up to two checked bags.