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Cheap flights from Great Falls to Los Angeles from $412

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to Los Angeles departing on 11/3. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Great Falls to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
4:57 pm - 11:18 am
GTF
-
ONT
19h 21m
1 stop
Alaska Airlines Logo
12:00 pm - 4:17 pm
ONT
-
GTF
27h 17m
1 stop
$412Alaska Airlines
Tue, Nov 3 - Sat, Nov 7
Alaska Airlines Logo
4:57 pm - 5:51 pm
GTF
-
ONT
25h 54m
2 stops
Alaska Airlines Logo
12:00 pm - 4:17 pm
ONT
-
GTF
27h 17m
1 stop
$418Alaska Airlines
Tue, Nov 3 - Sat, Nov 7
Alaska Airlines Logo
4:57 pm - 10:54 pm
GTF
-
ONT
6h 57m
1 stop
Alaska Airlines Logo
12:00 pm - 4:17 pm
ONT
-
GTF
27h 17m
1 stop
$422Alaska Airlines
Tue, Nov 3 - Sat, Nov 7
Alaska Airlines Logo
4:57 pm - 5:51 pm
GTF
-
ONT
25h 54m
2 stops
Alaska Airlines Logo
10:37 am - 4:17 pm
ONT
-
GTF
28h 40m
2 stops
$423Alaska Airlines
Tue, Nov 3 - Sat, Nov 7
Alaska Airlines Logo
4:57 pm - 5:51 pm
GTF
-
ONT
25h 54m
2 stops
Alaska Airlines Logo
12:00 pm - 4:17 pm
ONT
-
GTF
27h 17m
1 stop
$428Alaska Airlines
Tue, Nov 3 - Sat, Nov 7
Alaska Airlines Logo
5:19 pm - 11:16 am
GTF
-
ONT
18h 57m
1 stop
Alaska Airlines Logo
12:10 pm - 4:39 pm
ONT
-
GTF
27h 29m
1 stop
$432Alaska Airlines
Fri, Sep 25 - Mon, Sep 28
Alaska Airlines Logo
4:57 pm - 5:51 pm
GTF
-
ONT
25h 54m
2 stops
Alaska Airlines Logo
5:52 pm - 4:17 pm
ONT
-
GTF
21h 25m
2 stops
$433Alaska Airlines
Tue, Nov 3 - Sat, Nov 7
Alaska Airlines Logo
5:19 pm - 2:16 pm
GTF
-
ONT
21h 57m
1 stop
Alaska Airlines Logo
6:14 pm - 4:39 pm
ONT
-
GTF
21h 25m
2 stops
$438Alaska Airlines
Fri, Sep 25 - Mon, Sep 28
Alaska Airlines Logo
5:19 pm - 4:10 pm
GTF
-
ONT
23h 51m
2 stops
Alaska Airlines Logo
6:14 pm - 4:39 pm
ONT
-
GTF
21h 25m
2 stops
$443Alaska Airlines
Fri, Sep 25 - Mon, Sep 28
Alaska Airlines Logo
5:19 pm - 11:24 pm
GTF
-
ONT
7h 05m
1 stop
Alaska Airlines Logo
6:02 am - 4:39 pm
ONT
-
GTF
9h 37m
1 stop
$483Alaska Airlines
Thu, Sep 17 - Sun, Sep 20

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Delta flights from Great Falls to Ontario

Our best Delta deals on Great Falls to Ontario flight tickets
Delta
Nov 27
GTF1:10 pmGreat Falls
4h 02m
1 stop
ONT4:12 pmOntario
Nov 30
ONT5:05 pmOntario
4h 48m
1 stop
GTF10:53 pmGreat Falls
$504
Delta
Nov 27
GTF6:20 pmGreat Falls
6h 28m
1 stop
ONT11:48 pmOntario
Nov 30
ONT5:05 pmOntario
4h 48m
1 stop
GTF10:53 pmGreat Falls
$514
Delta
Nov 27
GTF6:20 pmGreat Falls
6h 28m
1 stop
ONT11:48 pmOntario
Nov 30
ONT5:05 pmOntario
4h 48m
1 stop
GTF10:53 pmGreat Falls
$524

Alaska Airlines flights from Great Falls to Ontario

Our best Alaska Airlines deals on Great Falls to Ontario flight tickets
Alaska Airlines
Nov 3
GTF4:57 pmGreat Falls
19h 21m
1 stop
ONT11:18 amOntario
Nov 7
ONT12:00 pmOntario
27h 17m
1 stop
GTF4:17 pmGreat Falls
$412
Alaska Airlines
Nov 3
GTF4:57 pmGreat Falls
25h 54m
2 stops
ONT5:51 pmOntario
Nov 7
ONT12:00 pmOntario
27h 17m
1 stop
GTF4:17 pmGreat Falls
$418
Alaska Airlines
Nov 3
GTF4:57 pmGreat Falls
6h 57m
1 stop
ONT10:54 pmOntario
Nov 7
ONT12:00 pmOntario
27h 17m
1 stop
GTF4:17 pmGreat Falls
$422

momondo Fare Finder

 
Customize your flight search to find flights from Great Falls to Ontario 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 July 25, 2026.
Use the filters below to find and compare flights from Great Falls to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Tue 11/3

4:57 pm-11:18 am

1 stop19h 21m

Ontario

Sat 11/7

12:00 pm-4:17 pm

1 stop27h 17m

$412

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Tue 11/3

4:57 pm-5:51 pm

2 stops25h 54m

Ontario

Sat 11/7

12:00 pm-4:17 pm

1 stop27h 17m

$418

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Tue 11/3

4:57 pm-10:54 pm

1 stop6h 57m

Ontario

Sat 11/7

12:00 pm-4:17 pm

1 stop27h 17m

$422

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Tue 11/3

4:57 pm-5:51 pm

2 stops25h 54m

Ontario

Sat 11/7

10:37 am-4:17 pm

2 stops28h 40m

$423

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Tue 11/3

4:57 pm-5:51 pm

2 stops25h 54m

Ontario

Sat 11/7

12:00 pm-4:17 pm

1 stop27h 17m

$428

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Fri 9/25

5:19 pm-11:16 am

1 stop18h 57m

Ontario

Mon 9/28

12:10 pm-4:39 pm

1 stop27h 29m

$432

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Tue 11/3

4:57 pm-5:51 pm

2 stops25h 54m

Ontario

Sat 11/7

5:52 pm-4:17 pm

2 stops21h 25m

$433

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Fri 9/25

5:19 pm-2:16 pm

1 stop21h 57m

Ontario

Mon 9/28

6:14 pm-4:39 pm

2 stops21h 25m

$438

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Fri 9/25

5:19 pm-4:10 pm

2 stops23h 51m

Ontario

Mon 9/28

6:14 pm-4:39 pm

2 stops21h 25m

$443
Quickest round-trip

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Thu 9/17

5:19 pm-11:24 pm

1 stop7h 05m

Ontario

Sun 9/20

6:02 am-4:39 pm

1 stop9h 37m

$483

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Great Falls to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Great Falls to Ontario according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Great Falls to Ontario (GTF to ONT) flight deals and tips

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

Fastest flight time

5h 05m

Direct flights

None
The fastest flight from Great Falls to Ontario takes 5h 05m
There are no direct flights from Great Falls to Ontario. There are no popular flight routes from Great Falls to Ontario.
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Frequently asked questions about flying from Great Falls to Ontario

  • How far is Great Falls to Ontario by plane?

    A flight from Great Falls to Ontario will travel around 984.5 mi. Flights usually cover this in 5h 05m, depending on flying conditions and air traffic around both airports.

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

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

  • How many operators does momondo search for flights from Great Falls Airport to Ontario Airport?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Great Falls Airport to Ontario Airport.

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

    The necessary travel and health documents for your Ontario 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.

  • What is the most popular airline from Great Falls to Ontario?

Best airlines flying from Great Falls to Ontario

Compare and see reviews for airlines that fly from Great Falls to Ontario with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $206Free CancellationRating
7.8
8,486 reviews
Search Delta flights

Frequently asked questions about flying from Great Falls to Ontario

  • How do I get Price Alerts for flights from Great Falls to Ontario?

    Search flight deals from Great Falls to Ontario. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Great Falls to Ontario with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ontario from Great Falls.

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

Flights from Great Falls to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Great Falls.

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

Yes momondo offers price alerts on flights to Ontario from Great Falls. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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