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Cheap flights from Ontario to Great Falls from C$ 346

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — GTF
15 Oct — 22 Oct1
1 adult
1 adult, Economy

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 15 September 2025.

Round-trip from

C$ 904

One-way from

C$ 346
United Airlines
  • United Airlines
  • 25/2-26/2
  • 4 total stops
  • 26h 59m total
  • Ontario to Great Falls
Search Deals
21/9
  • 21/9
  • 2 total stops
  • 19h 45m total
  • Ontario to Great Falls
Search Deals

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 15 September 2025.

Wed 25/24:00 p.m.YYZ - GTF
1 stop7h 15mUnited Airlines
Thu 26/27:00 a.m.GTF - YYZ
2 stops12h 29mUnited Airlines
Deal found 12/9C$ 904

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 629,999 searches. Data last updated 15 September 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 25/2

4:00 p.m.-9:15 p.m.

1 stop7h 15m

Great Falls

Thu 26/2

7:00 a.m.-9:29 p.m.

2 stops12h 29m

C$ 904

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

Sun 21/9

10:20 p.m.-4:05 p.m.

2 stops19h 45m

C$ 346

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Mon 20/10

6:45 p.m.-1:26 p.m.

2 stops20h 41m

C$ 478

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Sat 18/10

6:15 a.m.-9:11 p.m.

2 stops16h 56m

C$ 505

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Sun 19/10

6:45 p.m.-1:26 p.m.

2 stops20h 41m

C$ 529

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Mon 20/10

6:45 a.m.-5:35 p.m.

3 stops36h 50m

C$ 532

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

Sun 21/9

8:40 a.m.-9:28 p.m.

1 stop14h 48m

C$ 659

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Sun 19/10

6:45 a.m.-5:35 p.m.

3 stops36h 50m

C$ 675

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/9

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 5.7 km from the city centre, 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?

    For as low as C$ 904, United Airlines can have you in Great Falls from Region of Ontario in 7h 15m. There are 2488 km between Region of Ontario and Great Falls.

  • 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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Alternative routes for Ontario to Great Falls

See prices for flight routes from nearby airports that may be better suited for you.
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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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Can Cheapflights find flights from Ontario to Great Falls with no change fees?

Yes! Cheapflights helps users easily find flights from Ontario to Great Falls with no change fees.

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

Yes! Start tracking prices for Ontario to Great Falls flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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