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ONO to SOF: distance & flight time
Ontario (Ontario Municipal Airport) → Sofia (Sofia Airport)
5,965 mi
9,600 km · 5,184 nm
12h 10m
estimated nonstop flight time
+9h
time difference · heading northeast
See live ONO→SOF fares Phone-only fares on this route — call free
Flight time details
5,965 miles nonstop takes roughly 12h 10m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time gain when reading arrival times on your ticket.
The two airports
- ONO — Ontario Municipal Airport · Ontario, United States
- SOF — Sofia Airport · Sofia, Bulgaria
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near ONO
- BOI · Boise Air Terminal/Gowen Field50 mi away
- BKE · Baker City Municipal Airport69 mi away
- MYL · McCall Municipal Airport75 mi away
- MUO · Mountain Home Air Force Base88 mi away
Near SOF
- PDV · Plovdiv International Airport85 mi away
- INI · Nis Airport90 mi away
- SKP · Skopje Alexander the Great Airport105 mi away
- CRA · Craiova Airport115 mi away
Frequently asked questions
How far is ONO from SOF?
The flight distance from Ontario (ONO) to Sofia (SOF) is 5,965 miles (9,600 km, 5,184 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONO to SOF?
A nonstop flight takes about 12h 10m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Ontario and Sofia?
Sofia is 9 hours ahead of Ontario.
What is the cheapest way to fly from ONO to SOF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONO–SOF that never appear on search engines, with no booking fees.