Prague to Karlovy Vary

By the Viamo editorial team · Editor Terje Moy · Last updated July 2026 · 5 min read

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Karlovy Vary, the grand 19th-century spa town tucked into a river valley near Czechia's border with Germany, is an easy day trip or overnight from Prague — but unusually for this list, the bus genuinely beats the train on time, while the train wins handily on scenery. Here's how each stacks up.

The fast way: the direct bus

FlixBus and Czech operator RegioJet both run frequent direct coaches from Prague's Florenc bus station to Karlovy Vary, taking around 2 hours to 2 hours 15 minutes on the motorway. Departures run roughly every hour or two throughout the day, RegioJet's coaches in particular offering a comfortable, well-equipped ride with onboard refreshments included in some fare classes. For most visitors prioritising time and simplicity, the bus is the more practical choice, and it drops you close to the centre of Karlovy Vary rather than at an out-of-town station. See our guide to Prague airport to the city if you're arriving from abroad and connecting straight on to Florenc.

The scenic way: the train

České dráhy trains run from Prague to Karlovy Vary too, but the route is slower and more roundabout than the motorway the bus takes, typically taking around 3.5 to 4 hours including a change at Chomutov or Cheb depending on the exact service. What the train lacks in speed it makes up in scenery, winding through wooded hill country in the western part of Bohemia that the bus's motorway route largely bypasses. Reservations aren't generally required on these regional and fast trains, so tickets can be bought on the day — see our guide to regional trains explained for how turn-up-and-go tickets generally work in Central Europe.

Driving

Karlovy Vary is about 130 km from Prague, roughly a 1 hour 45 minute to 2 hour drive via the D6 motorway, similar in time to the bus. Driving suits visitors who want to continue on toward Germany afterwards, since Karlovy Vary sits not far from the border, or who want to explore the surrounding spa towns of the region at their own pace. Parking within the town itself is limited and the historic spa colonnade area is largely pedestrianised, so a car is more useful for the approach than for getting around once you've arrived. See our guide to driving in Czechia for the motorway vignette requirement.

Organised day tours

Day tours from Prague to Karlovy Vary are common, usually by coach and often bundled with a stop at a glassworks or the nearby spa town of Mariánské Lázně. These suit visitors who want added context — Karlovy Vary's spa culture and its famous mineral springs benefit from some explanation — and who'd rather not manage the bus or train independently, though given how straightforward the direct bus already is, a tour is more about the guiding than the transport itself.

What to see in the spa town

Karlovy Vary's centre is built around a series of ornate 19th-century colonnades sheltering hot mineral springs that visitors traditionally sip from small spouted cups, sold everywhere in the town, while strolling between the pastel-coloured spa buildings along the river. The hills above the town are threaded with walking trails and lookout towers, including the Diana observation tower reachable by funicular, offering wide views back over the colonnades and rooftops. Given the relaxed, unhurried nature of a spa town, Karlovy Vary rewards at least a full day, and many visitors choose to stay overnight to properly slow down and take the waters as intended.

Tickets and booking

FlixBus and RegioJet tickets are both bought online or via their respective apps, with fares that rise as a departure fills, so booking a day or two ahead generally secures a lower price than buying at the station. RegioJet in particular is known for offering different fare tiers with varying levels of comfort and included extras, and its distinctive yellow buses run a reliably frequent schedule on this popular route. Train tickets, being unreserved on most services, don't carry the same dynamic pricing and can be bought at the station without much planning.

Crossing onward into Germany

Karlovy Vary's position near the German border means it's sometimes used as a staging point for onward travel rather than purely a round trip from Prague, with bus and rail connections continuing toward Bavarian towns such as Marktredwitz. Travellers planning a wider Central European loop taking in both Czechia and Germany may find it more efficient to treat Karlovy Vary as a stop along a longer route rather than a there-and-back day trip, picking up a connection onward rather than returning the same way to Prague. For other short hops from the Czech capital, see our guide to Prague to Kutná Hora, a very different but equally popular day trip in the opposite direction.

Which should you choose?

For most travellers, the direct bus is the sensible default — faster, frequent and dropping you centrally, with RegioJet in particular offering a comfortable ride. Choose the train if you specifically want the scenic route through Bohemia's wooded hills and don't mind the extra time and a change of train. Drivers gain flexibility for combining the trip with the wider spa region or a crossing into Germany. Whatever you choose, if your schedule allows it, staying overnight suits Karlovy Vary's slow, restorative character better than a rushed day trip.

Frequently asked questions

Is the bus or train faster from Prague to Karlovy Vary?

The bus, generally taking around 2 to 2 hours 15 minutes against roughly 3.5 to 4 hours by train, which takes a longer, more roundabout route with a change involved.

Do I need to book in advance?

Booking a bus seat a day or two ahead is sensible, especially with RegioJet, though seats are usually available; train tickets on this route are typically unreserved and can be bought on the day.

Is Karlovy Vary worth an overnight stay?

Very much so if your schedule allows — the spa-town atmosphere is meant to be experienced slowly, and many visitors find a rushed day trip doesn't do it justice.

Can I combine Karlovy Vary with other spa towns?

Yes — Mariánské Lázně, another well-known Bohemian spa town, is a further onward journey by bus or train and is often paired with Karlovy Vary on organised tours or a longer independent trip.