Need help booking?
Unpublished phone-only deals available
SPF to POW: distance & flight time
Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field) → Portoroz (Portoroz Airport)
5,139 mi
8,270 km · 4,466 nm
10h 33m
estimated nonstop flight time
+8h
time difference · heading northeast
See live SPF→POW fares Phone-only fares on this route — call free
Flight time details
5,139 miles nonstop takes roughly 10h 33m 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
- SPF — Black Hills Airport-Clyde Ice Field · Spearfish-South Dakota, United States
- POW — Portoroz Airport · Portoroz, Slovenia
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 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
Near POW
- TRS · Trieste–Friuli Venezia Giulia Airport25 mi away
- PUY · Pula Airport43 mi away
- RJK · Rijeka Airport50 mi away
- VCE · Venice Marco Polo Airport61 mi away
Frequently asked questions
How far is SPF from POW?
The flight distance from Spearfish-South Dakota (SPF) to Portoroz (POW) is 5,139 miles (8,270 km, 4,466 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SPF to POW?
A nonstop flight takes about 10h 33m 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 Spearfish-South Dakota and Portoroz?
Portoroz is 8 hours ahead of Spearfish-South Dakota.
What is the cheapest way to fly from SPF to POW?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SPF–POW that never appear on search engines, with no booking fees.