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Cheap flights from Ontario to Great Falls from C$ 591

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 20/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — GTF
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Ontario to Great Falls

Enter your travel dates to find the best prices.

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 30 October 2025.

Wed 25/24:10 p.m.YYZ - GTF
1 stop7h 37mUnited Airlines
Thu 26/26:25 a.m.GTF - YYZ
2 stops12h 59mUnited Airlines
Deal found 27/10C$ 920
Wed 8/47:00 a.m.YUL - GTF
2 stops12h 44mDelta
Fri 10/46:15 p.m.GTF - YUL
2 stops27h 39mDelta
Deal found 28/10C$ 944

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 30 October 2025.

Round-trip from

C$ 944

One-way from

C$ 591
Delta
  • Delta
  • 8/4-10/4
  • 4 total stops
  • 40h 23m total
  • Ontario to Great Falls
Search Deals
Delta
  • Delta
  • 20/4
  • 2 total stops
  • 18h 44m total
  • Ontario to Great Falls
Search Deals

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 30 October 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

4:10 p.m.-9:47 p.m.

1 stop7h 37m

Great Falls

Thu 26/2

6:25 a.m.-9:24 p.m.

2 stops12h 59m

C$ 920

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Wed 8/4

7:00 a.m.-5:44 p.m.

2 stops12h 44m

Great Falls

Fri 10/4

6:15 p.m.-11:54 p.m.

2 stops27h 39m

C$ 944

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Mon 20/4

6:00 a.m.-10:44 p.m.

2 stops18h 44m

C$ 591

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Mon 20/4

12:45 p.m.-3:20 p.m.

3 stops28h 35m

C$ 959

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/10

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$ 920, United Airlines can have you in Great Falls from Region of Ontario in 7h 37m. There are 2488 km between Region of Ontario and Great Falls. Both multi-stop and direct flights can be found to your destination and back.

  • 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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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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