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Cheap flights from Great Falls to Los Angeles from $160

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 8/15. 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.
Delta Logo
5:40 am - 8:53 am
GTF
-
ONT
4h 13m
1 stop
Delta Logo
6:00 am - 12:27 pm
ONT
-
GTF
5h 27m
1 stop
$318Delta
út, květen 26 - st, červen 3
Delta Logo
6:19 pm - 10:45 pm
GTF
-
ONT
5h 26m
1 stop
Delta Logo
9:50 am - 5:39 pm
ONT
-
GTF
6h 49m
1 stop
$319Delta
so, květen 23 - čt, červen 4
Delta Logo
6:19 pm - 10:45 pm
GTF
-
ONT
5h 26m
1 stop
Delta Logo
4:57 pm - 10:26 pm
ONT
-
GTF
4h 29m
1 stop
$320Delta
ne, květen 24 - po, červen 1
Delta Logo
6:20 pm - 10:43 pm
GTF
-
ONT
5h 23m
1 stop
Delta Logo
7:00 am - 5:40 pm
ONT
-
GTF
9h 40m
2 stops
$324Delta
so, květen 2 - út, květen 5
Delta Logo
6:19 pm - 10:45 pm
GTF
-
ONT
5h 26m
1 stop
Delta Logo
6:45 am - 5:39 pm
ONT
-
GTF
9h 54m
2 stops
$325Delta
ne, květen 24 - út, červen 2
Delta Logo
6:20 pm - 10:43 pm
GTF
-
ONT
5h 23m
1 stop
Delta Logo
6:00 am - 12:27 pm
ONT
-
GTF
5h 27m
1 stop
$343Delta
so, květen 2 - út, květen 5
Delta Logo
6:19 pm - 10:45 pm
GTF
-
ONT
5h 26m
1 stop
Delta Logo
9:50 am - 5:39 pm
ONT
-
GTF
6h 49m
1 stop
$344Delta
ne, květen 24 - ne, květen 31
Multiple Airlines Logo
6:15 pm - 11:59 pm
GTF
-
ONT
6h 44m
1 stop
Multiple Airlines Logo
12:59 am - 8:41 pm
ONT
-
GTF
18h 42m
2 stops
$352Multiple Airlines
čt, duben 30 - so, květen 2
Alaska Airlines Logo
6:52 pm - 11:58 pm
GTF
-
ONT
6h 06m
1 stop
Alaska Airlines Logo
12:04 pm - 6:12 pm
ONT
-
GTF
5h 08m
1 stop
$358Alaska Airlines
st, květen 27 - so, květen 30
Alaska Airlines Logo
6:52 pm - 11:58 pm
GTF
-
ONT
6h 06m
1 stop
Alaska Airlines Logo
12:04 pm - 6:12 pm
ONT
-
GTF
5h 08m
1 stop
$359Alaska Airlines
ne, květen 24 - so, květen 30

United Airlines flights from Great Falls to Ontario

Our best United Airlines deals on Great Falls to Ontario flight tickets
United Airlines
May 23
GTF2:37 pmGreat Falls
7h 05m
1 stop
ONT8:42 pmOntario
May 30
ONT5:00 amOntario
7h 41m
1 stop
GTF1:41 pmGreat Falls
$398
United Airlines
May 31
GTF6:15 amGreat Falls
7h 32m
1 stop
ONT12:47 pmOntario
Jun 4
ONT1:18 pmOntario
7h 16m
1 stop
GTF9:34 pmGreat Falls
$405
United Airlines
May 25
GTF6:15 amGreat Falls
7h 32m
1 stop
ONT12:47 pmOntario
May 30
ONT5:00 amOntario
7h 41m
1 stop
GTF1:41 pmGreat Falls
$409

Alaska Airlines flights from Great Falls to Ontario

Our best Alaska Airlines deals on Great Falls to Ontario flight tickets
Alaska Airlines
May 27
GTF6:52 pmGreat Falls
6h 06m
1 stop
ONT11:58 pmOntario
Jun 2
ONT12:04 pmOntario
5h 08m
1 stop
GTF6:12 pmGreat Falls
$358
Alaska Airlines
May 24
GTF6:52 pmGreat Falls
6h 06m
1 stop
ONT11:58 pmOntario
May 30
ONT12:04 pmOntario
5h 08m
1 stop
GTF6:12 pmGreat Falls
$359
Alaska Airlines
May 24
GTF6:52 pmGreat Falls
6h 06m
1 stop
ONT11:58 pmOntario
Jun 4
ONT12:04 pmOntario
5h 08m
1 stop
GTF6:12 pmGreat Falls
$360

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 duben 15, 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
Quickest round-trip

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

út 5/26

5:40 am-8:53 am

1 stop4h 13m

Ontario

st 6/3

6:00 am-12:27 pm

1 stop5h 27m

$318

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

so 5/23

6:19 pm-10:45 pm

1 stop5h 26m

Ontario

čt 6/4

9:50 am-5:39 pm

1 stop6h 49m

$319

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

ne 5/24

6:19 pm-10:45 pm

1 stop5h 26m

Ontario

po 6/1

4:57 pm-10:26 pm

1 stop4h 29m

$320

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

so 5/2

6:20 pm-10:43 pm

1 stop5h 23m

Ontario

út 5/5

7:00 am-5:40 pm

2 stops9h 40m

$324

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

ne 5/24

6:19 pm-10:45 pm

1 stop5h 26m

Ontario

út 6/2

6:45 am-5:39 pm

2 stops9h 54m

$325

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

so 5/2

6:20 pm-10:43 pm

1 stop5h 23m

Ontario

út 5/5

6:00 am-12:27 pm

1 stop5h 27m

$343

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

ne 5/24

6:19 pm-10:45 pm

1 stop5h 26m

Ontario

ne 5/31

9:50 am-5:39 pm

1 stop6h 49m

$344

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

čt 4/30

6:15 pm-11:59 pm

1 stop6h 44m

Ontario

so 5/2

12:59 am-8:41 pm

2 stops18h 42m

$352

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

st 5/27

6:52 pm-11:58 pm

1 stop6h 06m

Ontario

so 5/30

12:04 pm-6:12 pm

1 stop5h 08m

$358

Great FallsOntario

GTF - ONT

GTFONT

Great Falls

ne 5/24

6:52 pm-11:58 pm

1 stop6h 06m

Ontario

so 5/30

12:04 pm-6:12 pm

1 stop5h 08m

$359

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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?

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

What airlines fly to Ontario?

Delta, Alaska Airlines and United Airlines are the top three most popular airlines that fly to Ontario from Great Falls according to our data. Delta is the first choice among our users, with 86% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 3 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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 23m

Direct flights

None
The fastest flight from Great Falls to Ontario takes 5h 23m
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 5h 23m, 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 $203Free CancellationRating
7.9
8,404 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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