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Cheap flights from Ontario to Great Falls from $203

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 2/25. 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
0 bags

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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.
Alaska Airlines Logo
4:45 pm - 4:17 pm
YYZ
-
GTF
25h 32m1 stop
Alaska Airlines Logo
4:57 pm - 3:35 pm
GTF
-
YYZ
20h 38m1 stop
$401Alaska Airlines
Thu, Feb 26 - Mon, Mar 2
Alaska Airlines Logo
1:10 pm - 4:17 pm
YYZ
-
GTF
29h 07m2 stops
Alaska Airlines Logo
4:57 pm - 3:35 pm
GTF
-
YYZ
20h 38m1 stop
$495Alaska Airlines
Thu, Feb 26 - Mon, Mar 2
Alaska Airlines Logo
1:10 pm - 4:17 pm
YYZ
-
GTF
29h 07m2 stops
Alaska Airlines Logo
4:57 pm - 3:35 pm
GTF
-
YYZ
20h 38m1 stop
$496Alaska Airlines
Thu, Feb 26 - Mon, Mar 2
Delta Logo
12:50 pm - 12:32 pm
YUL
-
GTF
25h 42m2 stops
Delta Logo
1:12 pm - 11:45 am
GTF
-
YUL
20h 33m2 stops
$563Delta
Wed, Jan 28 - Sun, Feb 1
Delta Logo
7:45 am - 5:33 pm
YYZ
-
GTF
11h 48m2 stops
Delta Logo
6:20 pm - 11:07 am
GTF
-
YYZ
14h 47m2 stops
$563Delta
Thu, Feb 26 - Mon, Mar 2
Delta Logo
7:45 am - 5:33 pm
YYZ
-
GTF
11h 48m2 stops
Delta Logo
6:20 pm - 11:07 am
GTF
-
YYZ
14h 47m2 stops
$564Delta
Thu, Feb 26 - Mon, Mar 2
Delta Logo
6:10 am - 5:33 pm
YYZ
-
GTF
13h 23m2 stops
Delta Logo
6:20 pm - 11:07 am
GTF
-
YYZ
14h 47m2 stops
$578Delta
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
5:25 pm - 9:53 pm
YUL
-
GTF
30h 28m1 stop
United Airlines Logo
2:29 pm - 3:16 pm
GTF
-
YUL
22h 47m2 stops
$731United Airlines
Wed, Jan 28 - Sun, Feb 1
United Airlines Logo
8:05 am - 9:53 pm
YUL
-
GTF
15h 48m2 stops
United Airlines Logo
2:29 pm - 4:58 pm
GTF
-
YUL
24h 29m1 stop
$754United Airlines
Wed, Jan 28 - Sun, Feb 1
Multiple Airlines Logo
6:45 am - 5:48 pm
YUL
-
GTF
13h 03m3 stops
Multiple Airlines Logo
6:28 pm - 3:57 pm
GTF
-
YUL
19h 29m2 stops
$962Multiple Airlines
Wed, Feb 25 - Wed, Mar 4

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
Jan 28
YUL5:25 pmMontreal Pierre Elliott Trudeau Intl
30h 28m
1 stop
GTF9:53 pmGreat Falls
Feb 1
GTF2:29 pmGreat Falls
22h 47m
2 stops
YUL3:16 pmMontreal Pierre Elliott Trudeau Intl
$731
United Airlines
Jan 28
YUL8:05 amMontreal Pierre Elliott Trudeau Intl
15h 48m
2 stops
GTF9:53 pmGreat Falls
Feb 1
GTF2:29 pmGreat Falls
24h 29m
1 stop
YUL4:58 pmMontreal Pierre Elliott Trudeau Intl
$754
United Airlines
Feb 25
YUL7:00 pmMontreal Pierre Elliott Trudeau Intl
20h 43m
2 stops
GTF1:43 pmGreat Falls
Mar 4
GTF2:25 pmGreat Falls
24h 33m
1 stop
YUL4:58 pmMontreal Pierre Elliott Trudeau Intl
$781

Delta flights from Region of Ontario to Great Falls

Our best Delta deals on Region of Ontario to Great Falls flight tickets
Delta
Jan 28
YUL12:50 pmMontreal Pierre Elliott Trudeau Intl
25h 42m
2 stops
GTF12:32 pmGreat Falls
Feb 1
GTF1:12 pmGreat Falls
20h 33m
2 stops
YUL11:45 amMontreal Pierre Elliott Trudeau Intl
$563
Delta
Feb 26
YYZ7:45 amToronto Pearson Intl
11h 48m
2 stops
GTF5:33 pmGreat Falls
Mar 2
GTF6:20 pmGreat Falls
14h 47m
2 stops
YYZ11:07 amToronto Pearson Intl
$564
Delta
Feb 26
YYZ6:10 amToronto Pearson Intl
13h 23m
2 stops
GTF5:33 pmGreat Falls
Mar 2
GTF6:20 pmGreat Falls
14h 47m
2 stops
YYZ11:07 amToronto Pearson Intl
$578

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 832,500 searches. Data last updated January 12, 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

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

Thu 2/26

4:45 pm-4:17 pm

1 stop25h 32m

Great Falls

Mon 3/2

4:57 pm-3:35 pm

1 stop20h 38m

$401

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

Thu 2/26

1:10 pm-4:17 pm

2 stops29h 07m

Great Falls

Mon 3/2

4:57 pm-3:35 pm

1 stop20h 38m

$495

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

Thu 2/26

1:10 pm-4:17 pm

2 stops29h 07m

Great Falls

Mon 3/2

4:57 pm-3:35 pm

1 stop20h 38m

$496

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Wed 1/28

12:50 pm-12:32 pm

2 stops25h 42m

Great Falls

Sun 2/1

1:12 pm-11:45 am

2 stops20h 33m

$563

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

Thu 2/26

7:45 am-5:33 pm

2 stops11h 48m

Great Falls

Mon 3/2

6:20 pm-11:07 am

2 stops14h 47m

$563

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

Thu 2/26

7:45 am-5:33 pm

2 stops11h 48m

Great Falls

Mon 3/2

6:20 pm-11:07 am

2 stops14h 47m

$564

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

Thu 2/26

6:10 am-5:33 pm

2 stops13h 23m

Great Falls

Mon 3/2

6:20 pm-11:07 am

2 stops14h 47m

$578

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Wed 1/28

5:25 pm-9:53 pm

1 stop30h 28m

Great Falls

Sun 2/1

2:29 pm-3:16 pm

2 stops22h 47m

$731

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Wed 1/28

8:05 am-9:53 pm

2 stops15h 48m

Great Falls

Sun 2/1

2:29 pm-4:58 pm

1 stop24h 29m

$754

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

Wed 2/25

6:45 am-5:48 pm

3 stops13h 03m

Great Falls

Wed 3/4

6:28 pm-3:57 pm

2 stops19h 29m

$962

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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 is the most popular carrier 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

11h 37m

Direct flights

None
The fastest flight from Region of Ontario to Great Falls takes 11h 37m
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 refreshed on a daily basis.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario to Great Falls Airport.

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

    The travel and health documents you'll need for your trip to Great Falls Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Great Falls Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling 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?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Great Falls. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Ontario to Great Falls flights to just show those with flexible booking policies.

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

Once you have performed a search for Ontario to Great Falls flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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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