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UGN to SOF: distance & flight time
Chicago (Waukegan National Airport) → Sofia (Sofia Airport)
5,175 mi
8,328 km · 4,497 nm
10h 37m
estimated nonstop flight time
+8h
time difference · heading northeast
See live UGN→SOF fares Phone-only fares on this route — call free
Flight time details
5,175 miles nonstop takes roughly 10h 37m 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
- UGN — Waukegan National Airport · Chicago, 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 UGN
- ORD · Chicago O'Hare International Airport31 mi away
- ENW · Kenosha Regional Airport12 mi away
- PWK · Chicago Executive Airport21 mi away
- RAC · John H Batten Airport24 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 UGN from SOF?
The flight distance from Chicago (UGN) to Sofia (SOF) is 5,175 miles (8,328 km, 4,497 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from UGN to SOF?
A nonstop flight takes about 10h 37m 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 Chicago and Sofia?
Sofia is 8 hours ahead of Chicago.
What is the cheapest way to fly from UGN to SOF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on UGN–SOF that never appear on search engines, with no booking fees.