Latest deals
Insights
FAQs
Price Alerts

Cheap flights from Ontario to Great Falls from $433

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 1/3. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ontario to Great Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:35 am - 9:35 pmYYZ-GTF
14h 00m1 stop
Multiple Airlines Logo
10:25 pm - 7:55 pmGTF-YYZ
19h 30m1 stop
$506Multiple Airlines
Find Deal
lun., dic. 15 - lun., dic. 22
Delta Logo
12:50 pm - 5:30 pmYUL-GTF
30h 40m2 stops
Delta Logo
5:30 am - 3:56 pmGTF-YUL
32h 26m2 stops
$529Delta
Find Deal
mié., ene. 21 - dom., ene. 25
Delta Logo
12:50 pm - 12:33 pmYUL-GTF
25h 43m2 stops
Delta Logo
6:10 pm - 3:56 pmGTF-YUL
19h 46m2 stops
$530Delta
Find Deal
mié., ene. 21 - dom., ene. 25
Alaska Airlines Logo
4:45 pm - 6:55 pmYYZ-GTF
28h 10m1 stop
Alaska Airlines Logo
7:35 pm - 3:35 pmGTF-YYZ
18h 00m1 stop
$618Alaska Airlines
Find Deal
vie., dic. 5 - mar., dic. 9
United Airlines Logo
6:50 am - 9:32 pmYYZ-GTF
16h 42m2 stops
United Airlines Logo
2:35 pm - 6:34 pmGTF-YYZ
25h 59m2 stops
$619United Airlines
Find Deal
vie., dic. 5 - mar., dic. 9
United Airlines Logo
6:00 am - 9:53 pmYUL-GTF
17h 53m2 stops
United Airlines Logo
6:10 am - 4:58 pmGTF-YUL
8h 48m1 stop
$629United Airlines
Find Deal
mié., ene. 21 - dom., ene. 25
United Airlines Logo
6:00 am - 9:53 pmYUL-GTF
17h 53m2 stops
United Airlines Logo
6:10 am - 4:58 pmGTF-YUL
8h 48m1 stop
$650United Airlines
Find Deal
mié., ene. 21 - dom., ene. 25
Alaska Airlines Logo
6:00 am - 6:55 pmYYZ-GTF
14h 55m2 stops
Alaska Airlines Logo
7:35 pm - 3:35 pmGTF-YYZ
18h 00m1 stop
$660Alaska Airlines
Find Deal
vie., dic. 5 - mar., dic. 9
United Airlines Logo
6:50 am - 9:32 pmYYZ-GTF
16h 42m2 stops
United Airlines Logo
2:35 pm - 9:58 amGTF-YYZ
17h 23m2 stops
$668United Airlines
Find Deal
vie., dic. 5 - mar., dic. 9
United Airlines Logo
4:10 pm - 9:32 pmYYZ-GTF
7h 22m1 stop
United Airlines Logo
2:35 pm - 2:14 pmGTF-YYZ
21h 39m2 stops
$732United Airlines
Find Deal
lun., dic. 15 - lun., dic. 22

Delta flights from Region of Ontario to Great Falls

Our best Delta deals on Region of Ontario to Great Falls flight tickets
Delta
Jan 21
YUL12:50 pmMontreal Pierre Elliott Trudeau Intl
30h 40m
2 stops
GTF5:30 pmGreat Falls
Jan 25
GTF5:30 amGreat Falls
32h 26m
2 stops
YUL3:56 pmMontreal Pierre Elliott Trudeau Intl
$529
Find similar
Delta
Jan 21
YUL12:50 pmMontreal Pierre Elliott Trudeau Intl
25h 43m
2 stops
GTF12:33 pmGreat Falls
Jan 25
GTF6:10 pmGreat Falls
19h 46m
2 stops
YUL3:56 pmMontreal Pierre Elliott Trudeau Intl
$530
Find similar

Alaska Airlines flights from Region of Ontario to Great Falls

Our best Alaska Airlines deals on Region of Ontario to Great Falls flight tickets
Alaska Airlines
Dec 5
YYZ4:45 pmToronto Pearson Intl
28h 10m
1 stop
GTF6:55 pmGreat Falls
Dec 9
GTF7:35 pmGreat Falls
18h 00m
1 stop
YYZ3:35 pmToronto Pearson Intl
$618
Find similar
Alaska Airlines
Dec 5
YYZ6:00 amToronto Pearson Intl
14h 55m
2 stops
GTF6:55 pmGreat Falls
Dec 9
GTF7:35 pmGreat Falls
18h 00m
1 stop
YYZ3:35 pmToronto Pearson Intl
$660
Find similar
Alaska Airlines
Dec 15
YYZ4:45 pmToronto Pearson Intl
28h 10m
1 stop
GTF6:55 pmGreat Falls
Dec 22
GTF7:21 pmGreat Falls
18h 14m
1 stop
YYZ3:35 pmToronto Pearson Intl
$858
Find similar

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 noviembre 19, 2025.
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

lun. 12/15

9:35 am-9:35 pm

1 stop14h 00m

Great Falls

lun. 12/22

10:25 pm-7:55 pm

1 stop19h 30m

$506

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

mié. 1/21

12:50 pm-5:30 pm

2 stops30h 40m

Great Falls

dom. 1/25

5:30 am-3:56 pm

2 stops32h 26m

$529

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

mié. 1/21

12:50 pm-12:33 pm

2 stops25h 43m

Great Falls

dom. 1/25

6:10 pm-3:56 pm

2 stops19h 46m

$530

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

vie. 12/5

4:45 pm-6:55 pm

1 stop28h 10m

Great Falls

mar. 12/9

7:35 pm-3:35 pm

1 stop18h 00m

$618

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

vie. 12/5

6:50 am-9:32 pm

2 stops16h 42m

Great Falls

mar. 12/9

2:35 pm-6:34 pm

2 stops25h 59m

$619

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

mié. 1/21

6:00 am-9:53 pm

2 stops17h 53m

Great Falls

dom. 1/25

6:10 am-4:58 pm

1 stop8h 48m

$629

MontrealGreat Falls

YUL - GTF

YULGTF

Montreal Pierre Elliott Trudeau Intl

mié. 1/21

6:00 am-9:53 pm

2 stops17h 53m

Great Falls

dom. 1/25

6:10 am-4:58 pm

1 stop8h 48m

$650

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

vie. 12/5

6:00 am-6:55 pm

2 stops14h 55m

Great Falls

mar. 12/9

7:35 pm-3:35 pm

1 stop18h 00m

$660

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

vie. 12/5

6:50 am-9:32 pm

2 stops16h 42m

Great Falls

mar. 12/9

2:35 pm-9:58 am

2 stops17h 23m

$668

TorontoGreat Falls

YYZ - GTF

YYZGTF

Toronto Pearson Intl

lun. 12/15

4:10 pm-9:32 pm

1 stop7h 22m

Great Falls

lun. 12/22

2:35 pm-2:14 pm

2 stops21h 39m

$732

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

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

Direct flights

None
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.

An easier way to manage your Great Falls trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
vie. 12/19
vie. 12/26
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States