1 867 km (approx. 24 hours).
Probably a couple of hours, maybe more. I went there once and it took us about an hour to reach Ploiesti from Bucharest. It depends on the traffic really. (but Ploieștiori is even farther away from Bucharest than Ploiești)
1 654 miles
Bucharest (BUH) to London (LON) Shortest Flight Duration: 3 hours 25 mins
Non stop drive (change of drivers, not the car) will take 12 to 14 hours depending on the traffic
Roma-Bucharest: 2 hours
With TAROM: 2 h 50 min
New York - Bucharest: min. 12 hours
Pittsburgh - Bucharest: ca. 17 hours
From Bucharest to New Delhi: 10-11 h.
1 h 30 min with Aerosvit Airlines (Bucharest-Kiev)
With Air Berlin, via Vienna: 4 h 10 min.