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$423+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — GTF
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find flight deals from Ontario to Great Falls

Best flights from Ontario to Great Falls
Discover carefully curated flight deals from Ontario to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2025.

This United Airlines deal was found by Cheapflights users on 10/28. 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.
Wed 2/254:10 pmYYZ - GTF
1 stop7h 37mUnited Airlines
Thu 2/266:25 amGTF - YYZ
2 stops12h 59mUnited Airlines
Deal found 10/28$660
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:00 amYUL - GTF
2 stops12h 44mDelta
Fri 4/106:15 pmGTF - YUL
2 stops27h 39mDelta
Deal found 10/28$676

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 October 30, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$659
(United Airlines)

One-way from

$423
(Delta)
Provider with most accurate pricing for Toronto (YTO)-Great Falls flight deals.
Search Deals
Provider most trusted by Cheapflights users for Toronto (YTO)-Great Falls flights.
Search Deals
From Ontario to Great Falls
Search Deals
One-way flight from Ontario to Great Falls
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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 October 30, 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

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

Wed 2/25

4:10 pm-9:47 pm

1 stop7h 37m

Great Falls

Thu 2/26

6:25 am-9:24 pm

2 stops12h 59m

$660

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Wed 4/8

7:00 am-5:44 pm

2 stops12h 44m

Great Falls

Fri 4/10

6:15 pm-11:54 pm

2 stops27h 39m

$676

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Mon 4/20

6:00 am-10:44 pm

2 stops18h 44m

$423

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Mon 4/20

12:45 pm-3:20 pm

3 stops28h 35m

$687

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

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 7h 37m. United Airlines provides one of the quickest options available for as low as $660. Airlines will cover a distance of 1546 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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.

See more FAQs

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