Need help booking?
Unpublished phone-only deals available
SPF to CMI: distance & flight time
Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field) → Champaign (University of Illinois Willard Airport)
849 mi
1,366 km · 737 nm
2h 19m
estimated nonstop flight time
+1h
time difference · heading east
See live SPF→CMI fares Phone-only fares on this route — call free
Flight time details
849 miles nonstop takes roughly 2h 19m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-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
- CMI — University of Illinois Willard Airport · Champaign, 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 CMI
Frequently asked questions
How far is SPF from CMI?
The flight distance from Spearfish-South Dakota (SPF) to Champaign (CMI) is 849 miles (1,366 km, 737 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SPF to CMI?
A nonstop flight takes about 2h 19m 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 Champaign?
Champaign is 1 hour ahead of Spearfish-South Dakota.
What is the cheapest way to fly from SPF to CMI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SPF–CMI that never appear on search engines, with no booking fees.