ÖBB Railjet vs RegioJet Train:
The Best Option for Your Next Train Journey
Railjet is the stronger all-round choice for the Vienna to Prague route: nine daily departures, a proper restaurant car, and a quieter, more premium atmosphere. RegioJet is the better pick if you're booking close to departure, traveling on a budget, or want RegioJet's four-seat Business compartments and included seat reservation without paying extra.
Railjet vs RegioJet at a Glance

Price: Advance Fares vs Buying Tickets Last-Minute

Railjet typically has higher base fares than RegioJet, but the cheapest advance-purchase tickets on both operators start from the same headline price: €14.90 in second class on Railjet, and €14.90 in Low Cost class on RegioJet. The difference shows up as your travel date gets closer. ÖBB's Sparschiene fares climb quickly once the cheap allocation sells out, and a full-price, fully flexible ÖBB ticket costs €88.40 — though the identical Railjet journey can cost as little as €59 if bought through Czech Railways instead. RegioJet's prices increase only slightly as departure approaches, which makes it the more forgiving option if you're buying tickets a day or two before you travel rather than months in advance. If you already know your exact travel plans, book Railjet early and lock in the €14.90–29.90 range. If your plans are still loose, RegioJet's flatter pricing curve protects you from Railjet's last-minute price spikes.

Speed and Frequency: How Many Direct Trains Run Each Day

Both operators run direct trains between Vienna and Prague with no changes, covering the 254 km distance in about four hours — competitive with flying once you factor in airport transfers, and considerably more comfortable than a long-distance bus. Railjet is the faster of the two on paper, with a maximum speed of 230 km/h against RegioJet's top speed of 200 km/h, though in practice the journey times are close. Frequency is where Railjet pulls ahead: it operates approximately 9 trains daily on this route, departing roughly every two hours, while RegioJet runs up to 4 daily departures. If you need flexibility around your schedule, or you're chasing the first train out of Vienna in the morning or the last train back from Prague at night, Railjet's timetable gives you far more options to work with.

Economy, First Class, and Business Class on Railjet

Railjet's Economy Class seats are arranged 2+2 across the car width — a standard, comfortable second-class layout with power sockets at every seat. First Class steps up to individually adjustable leather seats in a 2+1 layout, with more legroom and power outlets throughout, plus at-seat food ordering from the restaurant car menu. Business Class is where the mixed fleet on this route matters: Czech-operated Railjets, common between Prague and Vienna, have only six luxurious leather cradle seats arranged 1+1 in a small dedicated area, while Austrian-operated Railjets offer a more spacious 16-seat business cabin split across semi-enclosed compartments. Either way, Railjet's atmosphere overall — thanks to designated quiet cars and a children's play area tucked away from the main seating — tends to feel calmer and more premium than RegioJet's cabin, especially in First and Business.

Low Cost, Standard, Relax, and Business on RegioJet

Railjet Train
Railjet's restaurant car is the clearer of the two catering setups: a full dining car open to all passengers, serving hot dishes and draught beer on tap, with a steward taking orders from the restaurant car menu and delivering food to First and Business Class seats. RegioJet skips the dedicated restaurant car in favor of at-seat service — a trolley works through the train offering hot and cold drinks and snacks, with free tea, coffee, or water included in Standard, Relax, and Business (not in Low Cost). If you want to actually order food and sit down properly, Railjet wins outright. If you just want a complimentary drink brought to your seat without leaving it, RegioJet's onboard service covers that just as well, and often for less money if you do want to order more.
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Regiojet Train
RegioJet's day service between Vienna and Prague runs, per Rail Ninja's own route page, "six travel classes" — though Rail Ninja names only two of them explicitly, Low Cost and Business, with a "Relax Class" mentioned separately as having "at-seat catering." This conflicts with the four-class structure (Low Cost, Standard, Relax, Business) used elsewhere on this same site and confirmed by RegioJet's own published fare names for this route — Rail Ninja doesn't reconcile the discrepancy or list all six classes by name. On pricing, Rail Ninja states fares run "from €14.90 in Low Cost to €23.90 in Business," which matches the low and high ends of the four-class fare table, but Rail Ninja gives no figures for Standard or Relax, and no seat configuration, catering, or amenity details for any class (no mention of 2+2 vs 2+1 layouts, power sockets, drinks selection, or the private four-seat Business compartments described elsewhere on the site). Since Rail Ninja's page doesn't specify which classes apply to this route versus RegioJet's network-wide sleeper/long-distance services, that clarification can't be sourced from Rail Ninja and would need to come from RegioJet directly if you want it included.
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Czech Railways, Austrian Railjets, and the

Mixed Fleet on This Route

Unlike most routes on the Austrian rail network, Vienna to Prague isn't purely an ÖBB service. Railjet departures here are run jointly by ÖBB and Czech Railways, so the train you board might be an Austrian railjet or a Czech railjet — the interiors, and specifically the size of the Business Class cabin, differ between the two as covered above. RegioJet, meanwhile, is a fully private Czech operator with no state ownership, and is popular across Central Europe for its budget-friendly pricing and competitive service. Both use Vienna Hauptbahnhof and Prague's main station (Praha hlavní nádraží) in the city center, so wherever you book, you're not dealing with a peripheral or inconvenient station on either end.
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Booking Windows and Seat Reservations
Railjet tickets open roughly six months before departure through ÖBB's journey planner, which suits travelers who like to lock in dates and prices early. RegioJet's booking window is shorter, but in practice there's rarely a need to book far ahead — seats are usually available at reasonable prices even a day or two before travel, and the RegioJet app makes last-minute booking straightforward. Seat reservations differ too: Railjet's are optional, at roughly €3, unless you've bought a Business Class fare where one's included; RegioJet builds a free seat reservation into every single ticket, regardless of class, so there's no add-on fee and no risk of standing. RegioJet also allows free cancellation up to 15 minutes before departure on standard fares, giving it an edge in flexibility that Railjet's cheaper Sparschiene tickets don't match.
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Verdict: Railjet or RegioJet?
There's no single right answer here, and the split in traveler opinion reflects real trade-offs rather than a close call either way.
  • Choose Railjet if: you're booking well in advance, frequency and schedule flexibility matter, you want the newest available rolling stock and a quieter cabin, or a proper hot meal in a restaurant car is part of the trip for you.
  • Choose RegioJet if: you're booking close to your travel date, price is the deciding factor, you want RegioJet's private four-seat Business compartments, or you'd rather have a free seat reservation and flexible cancellation built into every ticket.
Reliability-conscious travelers who want dining and a calmer atmosphere should book Railjet even at the higher price. Budget-focused travelers happy with older carriages and at-seat service, in exchange for flexibility and lower fares, will be well served by RegioJet.
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FAQ: Vienna - Prague by Train

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