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Cheap flights from Ontario to Great Falls from C$ 294

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Great Falls departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Ontario to Great Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:00 a.m. - 10:29 p.m.
YUL
-
GTF
18h 29m
2 stops
Delta Logo
5:30 a.m. - 11:26 p.m.
GTF
-
YUL
15h 56m
2 stops
C$ 769Delta
Wed, 29 Apr - Sat, 2 May
United Airlines Logo
8:25 a.m. - 9:17 p.m.
YUL
-
GTF
14h 52m
2 stops
United Airlines Logo
2:35 p.m. - 10:40 a.m.
GTF
-
YUL
18h 05m
2 stops
C$ 773United Airlines
Wed, 29 Apr - Sat, 2 May
United Airlines Logo
9:45 a.m. - 9:17 p.m.
YUL
-
GTF
13h 32m
2 stops
United Airlines Logo
6:15 a.m. - 9:26 p.m.
GTF
-
YUL
13h 11m
2 stops
C$ 782United Airlines
Wed, 29 Apr - Sat, 2 May
Delta Logo
7:00 a.m. - 10:44 p.m.
YUL
-
GTF
17h 44m
2 stops
Delta Logo
5:30 a.m. - 11:56 p.m.
GTF
-
YUL
16h 26m
2 stops
C$ 825Delta
Fri, 26 Jun - Mon, 6 Jul
United Airlines Logo
9:45 a.m. - 9:17 p.m.
YUL
-
GTF
13h 32m
2 stops
United Airlines Logo
6:15 a.m. - 3:28 p.m.
GTF
-
YUL
7h 13m
1 stop
C$ 855United Airlines
Wed, 29 Apr - Sat, 2 May
United Airlines Logo
11:23 a.m. - 9:17 p.m.
YUL
-
GTF
11h 54m
2 stops
United Airlines Logo
6:15 a.m. - 3:28 p.m.
GTF
-
YUL
7h 13m
1 stop
C$ 856United Airlines
Wed, 29 Apr - Sat, 2 May
United Airlines Logo
4:30 p.m. - 9:34 p.m.
YUL
-
GTF
31h 04m
2 stops
United Airlines Logo
6:15 a.m. - 3:29 p.m.
GTF
-
YUL
7h 14m
1 stop
C$ 940United Airlines
Fri, 26 Jun - Mon, 6 Jul
United Airlines Logo
8:15 a.m. - 9:34 p.m.
YUL
-
GTF
15h 19m
1 stop
United Airlines Logo
6:15 a.m. - 3:29 p.m.
GTF
-
YUL
7h 14m
1 stop
C$ 1,265United Airlines
Fri, 26 Jun - Mon, 6 Jul

United Airlines flights from Region of Ontario to Great Falls

Our best United Airlines deals on Region of Ontario to Great Falls flight tickets
United Airlines
29 Apr
YUL8:25 a.m.Montreal Pierre Elliott Trudeau Intl
14h 52m
2 stops
GTF9:17 p.m.Great Falls
2 May
GTF2:35 p.m.Great Falls
18h 05m
2 stops
YUL10:40 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 773
United Airlines
29 Apr
YUL9:45 a.m.Montreal Pierre Elliott Trudeau Intl
13h 32m
2 stops
GTF9:17 p.m.Great Falls
2 May
GTF6:15 a.m.Great Falls
13h 11m
2 stops
YUL9:26 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 782
United Airlines
29 Apr
YUL9:45 a.m.Montreal Pierre Elliott Trudeau Intl
13h 32m
2 stops
GTF9:17 p.m.Great Falls
2 May
GTF6:15 a.m.Great Falls
15h 58m
2 stops
YUL12:13 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 784

momondo Fare Finder

 
Customize your flight search to find flights from Region of 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, momondo users made 96,600 searches. Data last updated 23 February 2026.
Use the filters below to find and compare flights from Ontario to Great Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Wed 29/4

6:00 a.m.-10:29 p.m.

2 stops18h 29m

Great Falls

Sat 2/5

5:30 a.m.-11:26 p.m.

2 stops15h 56m

C$ 769

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Wed 29/4

8:25 a.m.-9:17 p.m.

2 stops14h 52m

Great Falls

Sat 2/5

2:35 p.m.-10:40 a.m.

2 stops18h 05m

C$ 773

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Wed 29/4

9:45 a.m.-9:17 p.m.

2 stops13h 32m

Great Falls

Sat 2/5

6:15 a.m.-9:26 p.m.

2 stops13h 11m

C$ 782

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Fri 26/6

7:00 a.m.-10:44 p.m.

2 stops17h 44m

Great Falls

Mon 6/7

5:30 a.m.-11:56 p.m.

2 stops16h 26m

C$ 825

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Wed 29/4

9:45 a.m.-9:17 p.m.

2 stops13h 32m

Great Falls

Sat 2/5

6:15 a.m.-3:28 p.m.

1 stop7h 13m

C$ 855

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Wed 29/4

11:23 a.m.-9:17 p.m.

2 stops11h 54m

Great Falls

Sat 2/5

6:15 a.m.-3:28 p.m.

1 stop7h 13m

C$ 856

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Fri 26/6

4:30 p.m.-9:34 p.m.

2 stops31h 04m

Great Falls

Mon 6/7

6:15 a.m.-3:29 p.m.

1 stop7h 14m

C$ 940

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Fri 26/6

8:15 a.m.-9:34 p.m.

1 stop15h 19m

Great Falls

Mon 6/7

6:15 a.m.-3:29 p.m.

1 stop7h 14m

C$ 1,265

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

Wed 8/4

6:40 p.m.-10:52 a.m.

2 stops42h 12m

C$ 294

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

Wed 8/4

10:50 p.m.-10:52 a.m.

3 stops38h 02m

C$ 302

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Great Falls from

How to get the cheapest flight ticket from Region of Ontario to Great Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ontario to Great Falls?

United Airlines and Delta are the most popular carriers operating from Ontario to Great Falls

Cheap Region of Ontario to Great Falls flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Great Falls

Fastest flight time

13h 32m

Direct flights

None
The fastest flight from Region of Ontario to Great Falls takes 13h 32m
There are no direct flights from Region of Ontario to Great Falls. There are no popular flight routes from Region of Ontario to Great Falls.
Search flight deals

  • When did momondo last update prices for flights from Ontario to Great Falls Airport?

    Prices for flights from Ontario to Great Falls Airport are updated daily.

  • How old do you have to be to fly from Ontario to Great Falls Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Great Falls Airport.

  • What documentation or ID do you need to fly to Great Falls Airport?

    The necessary travel and health documents for your Great Falls Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Great Falls?

Book flights to Great Falls if you plan to visit one of these locations
Shelby

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Great Falls?

Finding the right flight to Great Falls from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Great Falls quick and easy, saving you time and money.

Can I find flights from Ontario to Great Falls with flexible booking policies on momondo?

momondo does allow users to show only those flights to Great Falls from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Great Falls?

momondo provides multiple filters to help you find the best flight to Great Falls from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Ontario to Great Falls right now. Can momondo alert me if prices change?

Price alerts on flights to Great Falls from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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