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Cheap flights from Montana to Los Angeles from $95

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montana to Los Angeles departing on 6/29. 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 Montana to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:24 am - 3:07 pm
MSO
-
ONT
5h 43m
1 stop
Multiple Airlines Logo
3:40 pm - 9:34 am
ONT
-
MSO
16h 54m
1 stop
$254Multiple Airlines
Thu, Jul 23 - Wed, Jul 29
Delta Logo
5:15 am - 8:47 am
BZN
-
ONT
4h 32m
1 stop
Delta Logo
5:06 pm - 10:39 pm
ONT
-
BZN
4h 33m
1 stop
$271Delta
Fri, Jul 24 - Sat, Aug 8
Alaska Airlines Logo
7:45 pm - 11:42 pm
FCA
-
ONT
4h 57m
1 stop
Alaska Airlines Logo
2:14 pm - 10:59 pm
ONT
-
FCA
7h 45m
1 stop
$277Alaska Airlines
Tue, Oct 6 - Tue, Oct 13
Multiple Airlines Logo
8:20 pm - 3:08 pm
BZN
-
ONT
19h 48m
2 stops
Multiple Airlines Logo
3:34 pm - 3:57 pm
ONT
-
BZN
23h 23m
1 stop
$279Multiple Airlines
Wed, Jun 10 - Wed, Jun 17
Multiple Airlines Logo
10:24 am - 10:57 am
MSO
-
ONT
25h 33m
2 stops
Multiple Airlines Logo
3:40 pm - 9:34 am
ONT
-
MSO
16h 54m
1 stop
$293Multiple Airlines
Thu, Jul 23 - Wed, Jul 29
Alaska Airlines Logo
3:35 pm - 11:53 pm
BZN
-
ONT
9h 18m
1 stop
Alaska Airlines Logo
7:23 am - 1:22 pm
ONT
-
BZN
4h 59m
1 stop
$294Alaska Airlines
Fri, Oct 9 - Sun, Oct 11
Southwest Logo
7:15 pm - 11:30 pm
BZN
-
ONT
5h 15m
1 stop
Southwest Logo
4:35 pm - 12:10 am
ONT
-
BZN
6h 35m
1 stop
$305Southwest
Fri, Jun 12 - Sun, Jun 14
United Airlines Logo
4:19 pm - 10:37 pm
MSO
-
ONT
7h 18m
1 stop
United Airlines Logo
5:00 am - 1:24 pm
ONT
-
MSO
7h 24m
1 stop
$326United Airlines
Wed, Jun 3 - Wed, Jun 10
Southwest Logo
7:15 pm - 11:30 pm
BZN
-
ONT
5h 15m
1 stop
Southwest Logo
4:35 pm - 12:10 am
ONT
-
BZN
6h 35m
1 stop
$328Southwest
Fri, Jun 12 - Sun, Jun 14
United Airlines Logo
6:20 am - 12:47 pm
FCA
-
ONT
7h 27m
1 stop
United Airlines Logo
1:18 pm - 9:47 pm
ONT
-
FCA
7h 29m
1 stop
$429United Airlines
Fri, May 29 - Tue, Jun 2

Delta flights from Montana to Ontario

Our best Delta deals on Montana to Ontario flight tickets
Delta
Jul 24
BZN5:15 amBozeman Gallatin Field
4h 32m
1 stop
ONT8:47 amOntario
Aug 8
ONT5:06 pmOntario
4h 33m
1 stop
BZN10:39 pmBozeman Gallatin Field
$271
Delta
Jul 27
BZN5:15 amBozeman Gallatin Field
4h 32m
1 stop
ONT8:47 amOntario
Aug 4
ONT5:06 pmOntario
5h 58m
1 stop
BZN12:04 amBozeman Gallatin Field
$295
Delta
May 21
BZN5:35 amBozeman Gallatin Field
4h 18m
1 stop
ONT8:53 amOntario
May 25
ONT6:45 amOntario
7h 32m
1 stop
BZN3:17 pmBozeman Gallatin Field
$305

Southwest flights from Montana to Ontario

Our best Southwest deals on Montana to Ontario flight tickets
Southwest
Jun 12
BZN7:15 pmBozeman Gallatin Field
5h 15m
1 stop
ONT11:30 pmOntario
Jun 14
ONT4:35 pmOntario
6h 35m
1 stop
BZN12:10 amBozeman Gallatin Field
$305
Southwest
Jun 12
BZN7:15 pmBozeman Gallatin Field
5h 15m
1 stop
ONT11:30 pmOntario
Jun 14
ONT4:35 pmOntario
6h 35m
1 stop
BZN12:10 amBozeman Gallatin Field
$328
Southwest
May 30
BZN2:55 pmBozeman Gallatin Field
7h 25m
1 stop
ONT9:20 pmOntario
Jun 3
ONT4:30 pmOntario
6h 45m
1 stop
BZN12:15 amBozeman Gallatin Field
$335

momondo Fare Finder

 
Customize your flight search to find flights from Montana 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 15, 2026.
Use the filters below to find and compare flights from Montana to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Thu 7/23

10:24 am-3:07 pm

1 stop5h 43m

Ontario

Wed 7/29

3:40 pm-9:34 am

1 stop16h 54m

$254
Quickest round-trip

BozemanOntario

BZN - ONT

BZNONT

Bozeman Gallatin Field

Fri 7/24

5:15 am-8:47 am

1 stop4h 32m

Ontario

Sat 8/8

5:06 pm-10:39 pm

1 stop4h 33m

$271

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Tue 10/6

7:45 pm-11:42 pm

1 stop4h 57m

Ontario

Tue 10/13

2:14 pm-10:59 pm

1 stop7h 45m

$277

BozemanOntario

BZN - ONT

BZNONT

Bozeman Gallatin Field

Wed 6/10

8:20 pm-3:08 pm

2 stops19h 48m

Ontario

Wed 6/17

3:34 pm-3:57 pm

1 stop23h 23m

$279

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Thu 7/23

10:24 am-10:57 am

2 stops25h 33m

Ontario

Wed 7/29

3:40 pm-9:34 am

1 stop16h 54m

$293

BozemanOntario

BZN - ONT

BZNONT

Bozeman Gallatin Field

Fri 10/9

3:35 pm-11:53 pm

1 stop9h 18m

Ontario

Sun 10/11

7:23 am-1:22 pm

1 stop4h 59m

$294

BozemanOntario

BZN - ONT

BZNONT

Bozeman Gallatin Field

Fri 6/12

7:15 pm-11:30 pm

1 stop5h 15m

Ontario

Sun 6/14

4:35 pm-12:10 am

1 stop6h 35m

$305

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Wed 6/3

4:19 pm-10:37 pm

1 stop7h 18m

Ontario

Wed 6/10

5:00 am-1:24 pm

1 stop7h 24m

$326

BozemanOntario

BZN - ONT

BZNONT

Bozeman Gallatin Field

Fri 6/12

7:15 pm-11:30 pm

1 stop5h 15m

Ontario

Sun 6/14

4:35 pm-12:10 am

1 stop6h 35m

$328

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Fri 5/29

6:20 am-12:47 pm

1 stop7h 27m

Ontario

Tue 6/2

1:18 pm-9:47 pm

1 stop7h 29m

$429

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Montana 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 month to fly to Ontario?

In general, April is the cheapest month to fly from Montana to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $108. If you aren’t able to travel during the month of April, then book flights to Ontario from Montana during November instead. Flights to Ontario in November, while not as cheap as those in April, still average around $120.

Cheap Montana to Ontario flight deals and tips

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

Fastest flight time

3h 48m

Direct flights

None
The fastest flight from Montana to Ontario takes 3h 48m
There are no direct flights from Montana to Ontario. There are no popular flight routes from Montana to Ontario.
Search flight deals

Frequently asked questions about flying from Montana to Ontario

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

    Prices for flights from Montana to Ontario Airport are updated daily.

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

  • How old do you have to be to fly from Montana to Ontario 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 Montana to Ontario Airport.

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

    The travel and health documents you'll need for your trip to Ontario 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 Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Montana to Ontario

Compare and see reviews for airlines that fly from Montana to Ontario with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $108Free CancellationRating
7.9
8,456 reviews
Search Delta flights
Alaska AirlinesPriceFrom $163Free CancellationRating
7.9
12,366 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $164Free CancellationRating
7.4
9,720 reviews
Search United Airlines flights
SouthwestPriceFrom $223Free CancellationRating
8.0
4,299 reviews
Search Southwest flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Montana to Ontario. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Ontario from Montana which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Montana to Ontario?

Once all potential Montana to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Ontario from Montana 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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