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SPF to YST: distance & flight time
Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field) → St. Theresa Point (St. Theresa Point Airport)
761 mi
1,225 km · 662 nm
2h 7m
estimated nonstop flight time
+1h
time difference · heading northeast
See live SPF→YST fares Phone-only fares on this route — call free
Flight time details
761 miles nonstop takes roughly 2h 7m gate to gate, flying northeast. 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
- YST — St. Theresa Point Airport · St. Theresa Point, Canada
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 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
Frequently asked questions
How far is SPF from YST?
The flight distance from Spearfish-South Dakota (SPF) to St. Theresa Point (YST) is 761 miles (1,225 km, 662 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SPF to YST?
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 Spearfish-South Dakota and St. Theresa Point?
St. Theresa Point is 1 hour ahead of Spearfish-South Dakota.
What is the cheapest way to fly from SPF to YST?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SPF–YST that never appear on search engines, with no booking fees.