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

Oct 7 — Oct 141

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 October 2023
From Ontario to Great Falls



$411 - $788



24.8 - 68 °F



0.5 - 2.5 inches

What is the cheapest day to fly round-trip from Ontario to Great Falls?

Tuesday flights are found to be more expensive to fly from Ontario to Great Falls. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Great Falls.

What is the cheapest month to fly from Ontario to Great Falls?

The best pricing can be found in the month of January. Prices to Great Falls from Ontario average $544. You can even find prices in January for less than $544, as users have found deals to Great Falls from as low as $194. The month of September appears to be one of the more expensive times to travel to Great Falls from Ontario. Flying in the targeted month can save you up to 64%.

When is the cheapest time to fly from Ontario to Great Falls (ONT - GTF)?

When flying from Ontario to Great Falls, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

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

What does ONT to GTF mean?

ONT stands for Ontario Airport, while GTF stands for Great Falls Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

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.
DeltaCheapest$290Average$427FlexibilityNo cancel feeOn-timeN/A
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How does Cheapflights help users find flights from Ontario to Great Falls?

When you search for this flight from Ontario to Great Falls, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ontario to Great Falls.

Can Cheapflights find flights from Ontario to Great Falls with no change fees?

Need flexible booking options for your flight to Great Falls from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to Great Falls become cheaper?

Yes, and it’s super simple to set up. Perform a flight search above and use a valid email address to enable the Price Alert feature. That’s it!

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