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YST to SDY: distance & flight time
St. Theresa Point (St. Theresa Point Airport) → Sidney (Sidney - Richland Regional Airport)
588 mi
946 km · 511 nm
1h 45m
estimated nonstop flight time
-1h
time difference · heading southwest
See live YST→SDY fares Phone-only fares on this route — call free
Flight time details
588 miles nonstop takes roughly 1h 45m 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
- SDY — Sidney - Richland Regional Airport · Sidney, 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 SDY
- ISN · Sloulin Field International Airport41 mi away
- GDV · Dawson Community Airport49 mi away
- OLF · L M Clayton Airport69 mi away
- DIK · Dickinson Theodore Roosevelt Regional Airport91 mi away
Frequently asked questions
How far is YST from SDY?
The flight distance from St. Theresa Point (YST) to Sidney (SDY) is 588 miles (946 km, 511 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YST to SDY?
A nonstop flight takes about 1h 45m 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 Sidney?
Sidney is 1 hour behind St. Theresa Point.
What is the cheapest way to fly from YST to SDY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YST–SDY that never appear on search engines, with no booking fees.