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YST to CYS: distance & flight time
St. Theresa Point (St. Theresa Point Airport) → Cheyenne (Cheyenne Regional Jerry Olson Field)
990 mi
1,594 km · 860 nm
2h 37m
estimated nonstop flight time
-1h
time difference · heading southwest
See live YST→CYS fares Phone-only fares on this route — call free
Flight time details
990 miles nonstop takes roughly 2h 37m 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
- CYS — Cheyenne Regional Jerry Olson Field · Cheyenne, 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 CYS
- LAR · Laramie Regional Airport46 mi away
- DEN · Denver International Airport90 mi away
- FNL · Northern Colorado Regional Airport50 mi away
- GXY · Greeley–Weld County Airport51 mi away
Frequently asked questions
How far is YST from CYS?
The flight distance from St. Theresa Point (YST) to Cheyenne (CYS) is 990 miles (1,594 km, 860 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YST to CYS?
A nonstop flight takes about 2h 37m 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 Cheyenne?
Cheyenne is 1 hour behind St. Theresa Point.
What is the cheapest way to fly from YST to CYS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YST–CYS that never appear on search engines, with no booking fees.