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HLN to YST: distance & flight time
Helena (Helena Regional Airport) → St. Theresa Point (St. Theresa Point Airport)
904 mi
1,455 km · 785 nm
2h 26m
estimated nonstop flight time
+1h
time difference · heading northeast
See live HLN→YST fares Phone-only fares on this route — call free
Flight time details
904 miles nonstop takes roughly 2h 26m 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
- HLN — Helena Regional Airport · Helena, 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 HLN
- BTM · Bert Mooney Airport51 mi away
- GTF · Great Falls International Airport67 mi away
- BZN · Gallatin Field70 mi away
- LVM · Mission Field97 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 HLN from YST?
The flight distance from Helena (HLN) to St. Theresa Point (YST) is 904 miles (1,455 km, 785 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HLN to YST?
A nonstop flight takes about 2h 26m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from HLN to YST?
Nonstop service on HLN–YST depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 2h 26m nonstop estimate.
What is the time difference between Helena and St. Theresa Point?
St. Theresa Point is 1 hour ahead of Helena.
What is the cheapest way to fly from HLN to YST?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HLN–YST that never appear on search engines, with no booking fees.
Why are some HLN to YST fares phone-only?
Consolidator contracts let us sell certain HLN–YST tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.