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XSI to GTF: distance & flight time
South Indian Lake (South Indian Lake Airport) → Great Falls (Great Falls International Airport)
830 mi
1,336 km · 721 nm
2h 16m
estimated nonstop flight time
-1h
time difference · heading southwest
See live XSI→GTF fares Phone-only fares on this route — call free
Flight time details
830 miles nonstop takes roughly 2h 16m 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
- XSI — South Indian Lake Airport · South Indian Lake, Canada
- GTF — Great Falls International Airport · Great Falls, 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 XSI
- YLR · Leaf Rapids Airport45 mi away
- YTH · Thompson Airport79 mi away
- YYL · Lynn Lake Airport82 mi away
- KES · Kelsey Airport105 mi away
Near GTF
- HLN · Helena Regional Airport67 mi away
- CTB · Cut Bank International Airport91 mi away
- LWT · Lewistown Municipal Airport94 mi away
- HVR · Havre City County Airport104 mi away
Frequently asked questions
How far is XSI from GTF?
The flight distance from South Indian Lake (XSI) to Great Falls (GTF) is 830 miles (1,336 km, 721 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from XSI to GTF?
A nonstop flight takes about 2h 16m 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 XSI to GTF?
Nonstop service on XSI–GTF 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 16m nonstop estimate.
What is the time difference between South Indian Lake and Great Falls?
Great Falls is 1 hour behind South Indian Lake.
What is the cheapest way to fly from XSI to GTF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on XSI–GTF that never appear on search engines, with no booking fees.
Why are some XSI to GTF fares phone-only?
Consolidator contracts let us sell certain XSI–GTF 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.