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RFD to SOF: distance & flight time
Rockford (Chicago Rockford International Airport) → Sofia (Sofia Airport)
5,230 mi
8,417 km · 4,545 nm
10h 43m
estimated nonstop flight time
+8h
time difference · heading northeast
See live RFD→SOF fares Phone-only fares on this route — call free
Flight time details
5,230 miles nonstop takes roughly 10h 43m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- RFD — Chicago Rockford International Airport · Rockford, 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 RFD
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 RFD from SOF?
The flight distance from Rockford (RFD) to Sofia (SOF) is 5,230 miles (8,417 km, 4,545 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RFD to SOF?
A nonstop flight takes about 10h 43m 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 Rockford and Sofia?
Sofia is 8 hours ahead of Rockford.
What is the cheapest way to fly from RFD to SOF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RFD–SOF that never appear on search engines, with no booking fees.