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YST to SPF: distance & flight time
St. Theresa Point (St. Theresa Point Airport) → Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field)
761 mi
1,225 km · 662 nm
2h 7m
estimated nonstop flight time
-1h
time difference · heading southwest
See live YST→SPF fares Phone-only fares on this route — call free
Flight time details
761 miles nonstop takes roughly 2h 7m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- YST — St. Theresa Point Airport · St. Theresa Point, Canada
- 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 YST
- YIV · Island Lake Airport8 mi away
- YGO · Gods Lake Narrows Airport51 mi away
- YRS · Red Sucker Lake Airport57 mi away
- ZGI · Gods River Airport75 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 YST from SPF?
The flight distance from St. Theresa Point (YST) to Spearfish-South Dakota (SPF) is 761 miles (1,225 km, 662 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YST to SPF?
A nonstop flight takes about 2h 7m 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 St. Theresa Point and Spearfish-South Dakota?
Spearfish-South Dakota is 1 hour behind St. Theresa Point.
What is the cheapest way to fly from YST to SPF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YST–SPF that never appear on search engines, with no booking fees.