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SPF to PRM: distance & flight time
Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field) → Portimao (Portimão Airport)
4,711 mi
7,582 km · 4,094 nm
9h 42m
estimated nonstop flight time
+7h
time difference · heading northeast
See live SPF→PRM fares Phone-only fares on this route — call free
Flight time details
4,711 miles nonstop takes roughly 9h 42m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-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
- PRM — Portimão Airport · Portimao, Portugal
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 PRM
- FAO · Faro Airport35 mi away
- BYJ · Beja Airport / Airbase73 mi away
- CAT · Cascais Airport117 mi away
- LIS · Humberto Delgado Airport (Lisbon Portela Airport)117 mi away
Frequently asked questions
How far is SPF from PRM?
The flight distance from Spearfish-South Dakota (SPF) to Portimao (PRM) is 4,711 miles (7,582 km, 4,094 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SPF to PRM?
A nonstop flight takes about 9h 42m 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 Portimao?
Portimao is 7 hours ahead of Spearfish-South Dakota.
What is the cheapest way to fly from SPF to PRM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SPF–PRM that never appear on search engines, with no booking fees.