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SOF to SPF: distance & flight time
Sofia (Sofia Airport) → Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field)
5,590 mi
8,996 km · 4,857 nm
11h 26m
estimated nonstop flight time
-9h
time difference · heading northwest
See live SOF→SPF fares Phone-only fares on this route — call free
Flight time details
5,590 miles nonstop takes roughly 11h 26m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time set-back when reading arrival times on your ticket.
The two airports
- SOF — Sofia Airport · Sofia, Bulgaria
- SPF — Black Hills Airport-Clyde Ice Field · Spearfish-South Dakota, United States
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 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
Near SPF
- RCA · Ellsworth Air Force Base41 mi away
- RAP · Rapid City Regional Airport47 mi away
- GCC · Gillette Campbell County Airport87 mi away
- CDR · Chadron Municipal Airport119 mi away
Frequently asked questions
How far is SOF from SPF?
The flight distance from Sofia (SOF) to Spearfish-South Dakota (SPF) is 5,590 miles (8,996 km, 4,857 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SOF to SPF?
A nonstop flight takes about 11h 26m 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 Sofia and Spearfish-South Dakota?
Spearfish-South Dakota is 9 hours behind Sofia.
What is the cheapest way to fly from SOF to SPF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SOF–SPF that never appear on search engines, with no booking fees.