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IAD to SPF: distance & flight time
Washington (Washington Dulles International Airport) → Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field)
1,404 mi
2,259 km · 1,220 nm
3h 31m
estimated nonstop flight time
-2h
time difference · heading northwest
See live IAD→SPF fares Phone-only fares on this route — call free
Flight time details
1,404 miles nonstop takes roughly 3h 31m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time set-back when reading arrival times on your ticket.
The two airports
- IAD — Washington Dulles International Airport · Washington, United States
- 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 IAD
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 IAD from SPF?
The flight distance from Washington (IAD) to Spearfish-South Dakota (SPF) is 1,404 miles (2,259 km, 1,220 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAD to SPF?
A nonstop flight takes about 3h 31m 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 Washington and Spearfish-South Dakota?
Spearfish-South Dakota is 2 hours behind Washington.
What is the cheapest way to fly from IAD to SPF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAD–SPF that never appear on search engines, with no booking fees.