Sofia (SOF)Vienna (VIE)
- non-stop flights:
- 1–4 per day
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $38number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 3–4 2–4 3–4 3–4 3–4 1–4 3–4 2 1–2 1–2 1–3 2 2 1–2