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PRH to SPF: distance & flight time
Phrae (Phrae Airport) → Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field)
7,855 mi
12,641 km · 6,825 nm
15h 52m
estimated nonstop flight time
-13h
time difference · heading north
See live PRH→SPF fares Phone-only fares on this route — call free
Flight time details
7,855 miles nonstop takes roughly 15h 52m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time set-back when reading arrival times on your ticket.
The two airports
- PRH — Phrae Airport · Phrae, Thailand
- 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 PRH
- LPT · Lampang Airport44 mi away
- NNT · Nan Airport62 mi away
- THS · Sukhothai Airport66 mi away
- CNX · Chiang Mai International Airport90 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 PRH from SPF?
The flight distance from Phrae (PRH) to Spearfish-South Dakota (SPF) is 7,855 miles (12,641 km, 6,825 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PRH to SPF?
A nonstop flight takes about 15h 52m 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 Phrae and Spearfish-South Dakota?
Spearfish-South Dakota is 13 hours behind Phrae.
What is the cheapest way to fly from PRH to SPF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PRH–SPF that never appear on search engines, with no booking fees.