Bucharest (OTP) to Vienna (VIE): 516 miles (830 km) great-circle, about 1h 30m nonstop by our estimate. Cheapest fare observed: $81 round-trip on Ryanair, nonstop, departing May 5, 2026.
$81 round-trip, Ryanair FR678, departing 2026-05-05 at 21:00, returning 2026-05-08. The recorded itinerary left on a Tuesday, returning on a Friday 3 nights later; the fare was observed 10 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $81, it ranked 8th of the 30 round-trip fares we recorded from OTP (median $112). That is 15.7 cents per great-circle mile (round-trip price over one-way distance), above the OTP median of 13.6 cents across 30 round-trip routes.
Routes from OTP of similar length: Athens (472 mi) at $101 and Warsaw (575 mi) at $114.
Ryanair had the cheapest fare on 5 of 30 OTP routes. It is the 26th longest of the 30 routes we track from OTP.
Of 19 departure airports with a fare to Vienna, Bucharest (OTP) ranked 4th at $81. Lowest: $52 from Venice (VCE); highest: $839 from Tampa (TPA); 13 nonstop. Cheapest-fare airlines (routes): Ryanair (10), airline WX (2), Air France (1), Air Serbia (1), Austrian (1) and Frontier (1), plus 3 more.
That depends on your passport and trip, so check the official source for Austria: European Commission: Schengen visa policy. Connecting elsewhere? Check that country's transit rules too.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones Europe/Bucharest, Europe/Vienna; flight time is our estimate.