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SPF to IAG: distance & flight time
Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field) → Niagara Falls (Niagara Falls International Airport)
1,238 mi
1,992 km · 1,075 nm
3h 9m
estimated nonstop flight time
+2h
time difference · heading east
See live SPF→IAG fares Phone-only fares on this route — call free
Flight time details
1,238 miles nonstop takes roughly 3h 9m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-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
- IAG — Niagara Falls International Airport · Niagara Falls, 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 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 IAG
- YYZ · Lester B. Pearson International Airport52 mi away
- YCM · Niagara District Airport13 mi away
- BUF · Buffalo Niagara International Airport16 mi away
- DU9 · Dunnville Airport37 mi away
Frequently asked questions
How far is SPF from IAG?
The flight distance from Spearfish-South Dakota (SPF) to Niagara Falls (IAG) is 1,238 miles (1,992 km, 1,075 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SPF to IAG?
A nonstop flight takes about 3h 9m 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 Niagara Falls?
Niagara Falls is 2 hours ahead of Spearfish-South Dakota.
What is the cheapest way to fly from SPF to IAG?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SPF–IAG that never appear on search engines, with no booking fees.