Cheap flights from Ontario to Great Falls (ONT - GTF)

Jun 6 — Jun 131

How to find the cheapest flight from Ontario (ONT) to Great Falls (GTF)

All the information you need to plan the best ONT to GTF flight in 2023: compare Ontario to Great Falls flight prices with the expected peak season, weather and rainfall in Great Falls.

Popular in


Cheapest in


Average price


Round-trip from

High demand for flights, 52% potential price rise
Best time to find cheap flights, 69% potential price drop
Average for round-trip flights in June 2023
From Ontario to Great Falls



$411 - $1,036



24.8 - 68 °F



0.5 - 2.5 inches

Related info for your journey

Useful info, stats and facts about Ontario to Great Falls flights.

Alternative routes for Ontario to Great Falls

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Ontario to Great Falls

The chart below displays the airlines Cheapflights users traveling from Ontario to Great Falls choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
DeltaCheapest$259Average$427FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
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