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$250+ Cheap flights from Ontario to Great Falls (GTF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — GTF
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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Cheap flight deals from Ontario to Great Falls

Keep the following information in mind while searching for Ontario to Great Falls flight deals. Data was last updated septiembre 15, 2025.

Round-trip from

$636
(United Airlines)

One-way from

$250
(Kiwi.com)
From Ontario to Great Falls
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One-way flight from Ontario to Great Falls
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Find flight deals from Ontario to Great Falls

Cheapest flights from Ontario to Great Falls
Explore the most affordable flight options available from Ontario to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/17:10 pmYUL - GTF
2 stops28h 01mUnited Airlines
mié. 10/87:00 amGTF - YUL
2 stops21h 53mUnited Airlines
Deal found 9/15$636

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Great Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 15, 2025.
Use the filters below to find and compare flights from Ontario to Great Falls that are best for you.

Fly from

Ontario

Fly to

Great Falls

Route

Depart

Return

Price

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

mié. 10/1

7:10 pm-9:11 pm

2 stops28h 01m

Great Falls

mié. 10/8

7:00 am-6:53 am

2 stops21h 53m

$636

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

mié. 2/25

4:00 pm-9:15 pm

1 stop7h 15m

Great Falls

jue. 2/26

7:00 am-9:33 pm

2 stops12h 33m

$653

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

dom. 9/21

10:20 pm-4:05 pm

2 stops19h 45m

$250

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

lun. 10/20

6:45 pm-1:26 pm

2 stops20h 41m

$345

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

sáb. 10/18

6:15 am-9:11 pm

2 stops16h 56m

$365

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

dom. 10/19

6:45 pm-1:26 pm

2 stops20h 41m

$382

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

lun. 10/20

6:45 am-5:35 pm

3 stops36h 50m

$384

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

dom. 9/21

8:40 am-9:28 pm

1 stop14h 48m

$476

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

dom. 10/19

6:45 am-5:35 pm

3 stops36h 50m

$488

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Best time to book a flight from Ontario to Great Falls

Have a flexible travel schedule? Discover the best time to fly to Great Falls from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Great Falls
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Great Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Great Falls from Ontario?

    Great Falls (GTF), located 3.5 mi from the city center, is the airport you fly into when you book flights from Ontario to Great Falls.

  • How long is the flight from Region of Ontario to Great Falls?

    A quick flight from Region of Ontario to Great Falls can take about 28h 01m. United Airlines provides one of the quickest options available for as low as $636. Airlines will cover a distance of 1777 mi.

  • Can I find deals for flights from Ontario to Great Falls that include hotel bookings?

    Yes. In addition to deals on Ontario to Great Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Great Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Great Falls.

  • Can I find deals for business class flights from Ontario to Great Falls?

    Yes. Cheapflights offers flight deals from Ontario to Great Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Region of Ontario to Great Falls?

    Currently, January is the cheapest month in which you can book a flight from Region of Ontario to Great Falls (average of $367). Flying from Region of Ontario to Great Falls in July is currently the most expensive (average of $574). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Great Falls?

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