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Cheap flights from Great Falls to Los Angeles from $194

This is the cheapest one-way 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 6/22. 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 Great Falls to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
5:09 pm - 11:11 pm
GTF
-
ONT
7h 02m
1 stop
Alaska Airlines Logo
12:00 pm - 4:38 pm
ONT
-
GTF
27h 38m
1 stop
$376Alaska Airlines
Wed, Jul 22 - Mon, Aug 31
Alaska Airlines Logo
5:09 pm - 11:11 pm
GTF
-
ONT
7h 02m
1 stop
Alaska Airlines Logo
7:12 am - 4:38 pm
ONT
-
GTF
8h 26m
2 stops
$392Alaska Airlines
Wed, Jul 22 - Mon, Aug 31
Alaska Airlines Logo
5:09 pm - 11:11 pm
GTF
-
ONT
7h 02m
1 stop
Alaska Airlines Logo
12:04 pm - 4:29 pm
ONT
-
GTF
27h 25m
1 stop
$417Alaska Airlines
Sat, Jul 11 - Mon, Jul 13
Alaska Airlines Logo
5:19 pm - 2:16 pm
GTF
-
ONT
21h 57m
1 stop
Alaska Airlines Logo
6:02 am - 4:39 pm
ONT
-
GTF
9h 37m
1 stop
$422Alaska Airlines
Wed, Sep 23 - Sat, Sep 26
Alaska Airlines Logo
5:19 pm - 5:18 pm
GTF
-
ONT
24h 59m
2 stops
Alaska Airlines Logo
6:02 am - 4:39 pm
ONT
-
GTF
9h 37m
1 stop
$428Alaska Airlines
Wed, Sep 23 - Sat, Sep 26
Alaska Airlines Logo
5:09 pm - 11:14 am
GTF
-
ONT
19h 05m
1 stop
Alaska Airlines Logo
9:20 pm - 4:29 pm
ONT
-
GTF
18h 09m
1 stop
$457Alaska Airlines
Fri, Jun 26 - Fri, Jul 3
Alaska Airlines Logo
5:19 pm - 8:24 pm
GTF
-
ONT
28h 05m
2 stops
Alaska Airlines Logo
7:12 am - 4:39 pm
ONT
-
GTF
8h 27m
2 stops
$463Alaska Airlines
Wed, Sep 23 - Sat, Sep 26
Alaska Airlines Logo
5:09 pm - 3:38 pm
GTF
-
ONT
23h 29m
2 stops
Alaska Airlines Logo
9:20 pm - 4:29 pm
ONT
-
GTF
18h 09m
1 stop
$517Alaska Airlines
Fri, Jun 26 - Fri, Jul 3
Alaska Airlines Logo
5:09 pm - 11:11 pm
GTF
-
ONT
7h 02m
1 stop
Alaska Airlines Logo
10:54 am - 4:29 pm
ONT
-
GTF
28h 35m
2 stops
$531Alaska Airlines
Sat, Jul 11 - Mon, Jul 13
United Airlines Logo
6:15 am - 12:47 pm
GTF
-
ONT
7h 32m
1 stop
United Airlines Logo
1:18 pm - 9:34 pm
ONT
-
GTF
7h 16m
1 stop
$558United Airlines
Wed, Jun 10 - Fri, Jun 19

United Airlines flights from Great Falls to Ontario

Our best United Airlines deals on Great Falls to Ontario flight tickets
United Airlines
Jun 10
GTF6:15 amGreat Falls
7h 32m
1 stop
ONT12:47 pmOntario
Jun 19
ONT1:18 pmOntario
7h 16m
1 stop
GTF9:34 pmGreat Falls
$558
United Airlines
May 30
GTF6:15 amGreat Falls
7h 23m
1 stop
ONT12:38 pmOntario
Jun 4
ONT5:00 amOntario
7h 41m
1 stop
GTF1:41 pmGreat Falls
$600
United Airlines
Jun 16
GTF6:15 amGreat Falls
7h 32m
1 stop
ONT12:47 pmOntario
Jun 19
ONT1:18 pmOntario
7h 16m
1 stop
GTF9:34 pmGreat Falls
$616

Alaska Airlines flights from Great Falls to Ontario

Our best Alaska Airlines deals on Great Falls to Ontario flight tickets
Alaska Airlines
Jul 22
GTF5:09 pmGreat Falls
7h 02m
1 stop
ONT11:11 pmOntario
Aug 31
ONT12:00 pmOntario
27h 38m
1 stop
GTF4:38 pmGreat Falls
$376
Alaska Airlines
Jul 22
GTF5:09 pmGreat Falls
7h 02m
1 stop
ONT11:11 pmOntario
Aug 31
ONT7:12 amOntario
8h 26m
2 stops
GTF4:38 pmGreat Falls
$392
Alaska Airlines
Jul 11
GTF5:09 pmGreat Falls
7h 02m
1 stop
ONT11:11 pmOntario
Jul 13
ONT12:04 pmOntario
27h 25m
1 stop
GTF4:29 pmGreat Falls
$417

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 May 29, 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

Wed 7/22

5:09 pm-11:11 pm

1 stop7h 02m

Ontario

Mon 8/31

12:00 pm-4:38 pm

1 stop27h 38m

$376

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Wed 7/22

5:09 pm-11:11 pm

1 stop7h 02m

Ontario

Mon 8/31

7:12 am-4:38 pm

2 stops8h 26m

$392

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Sat 7/11

5:09 pm-11:11 pm

1 stop7h 02m

Ontario

Mon 7/13

12:04 pm-4:29 pm

1 stop27h 25m

$417

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Wed 9/23

5:19 pm-2:16 pm

1 stop21h 57m

Ontario

Sat 9/26

6:02 am-4:39 pm

1 stop9h 37m

$422

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Wed 9/23

5:19 pm-5:18 pm

2 stops24h 59m

Ontario

Sat 9/26

6:02 am-4:39 pm

1 stop9h 37m

$428

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Fri 6/26

5:09 pm-11:14 am

1 stop19h 05m

Ontario

Fri 7/3

9:20 pm-4:29 pm

1 stop18h 09m

$457

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Wed 9/23

5:19 pm-8:24 pm

2 stops28h 05m

Ontario

Sat 9/26

7:12 am-4:39 pm

2 stops8h 27m

$463

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Fri 6/26

5:09 pm-3:38 pm

2 stops23h 29m

Ontario

Fri 7/3

9:20 pm-4:29 pm

1 stop18h 09m

$517

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Sat 7/11

5:09 pm-11:11 pm

1 stop7h 02m

Ontario

Mon 7/13

10:54 am-4:29 pm

2 stops28h 35m

$531
Quickest round-trip

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

Wed 6/10

6:15 am-12:47 pm

1 stop7h 32m

Ontario

Fri 6/19

1:18 pm-9:34 pm

1 stop7h 16m

$558

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Los Angeles from

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

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 Great Falls to Ontario?

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

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

4h 07m

Direct flights

None
The fastest flight from Great Falls to Ontario takes 4h 07m
There are no direct flights from Great Falls to Ontario. There are no popular flight routes from Great Falls to Ontario.
Search flight deals

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 4h 07m, 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
7.9
8,419 reviews
Search Delta flights

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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