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Cheap flights from Missoula to Los Angeles from $131

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missoula to Los Angeles departing on 3/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Missoula to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:38 pm - 8:36 pm
MSO
-
ONT
6h 58m
1 stop
United Airlines Logo
1:34 pm - 9:35 pm
ONT
-
MSO
7h 01m
1 stop
$217United Airlines
Sat, Apr 18 - Sat, Apr 25
Alaska Airlines Logo
4:20 pm - 10:44 pm
MSO
-
ONT
7h 24m
1 stop
Alaska Airlines Logo
6:00 am - 12:31 pm
ONT
-
MSO
5h 31m
1 stop
$239Alaska Airlines
Tue, Mar 17 - Wed, Apr 1
Delta Logo
6:04 pm - 10:48 pm
MSO
-
ONT
5h 44m
1 stop
Delta Logo
6:00 am - 12:16 pm
ONT
-
MSO
5h 16m
1 stop
$249Delta
Sat, Mar 21 - Wed, Apr 1
Delta Logo
1:07 pm - 10:34 pm
MSO
-
ONT
10h 27m
2 stops
Delta Logo
5:09 pm - 12:24 am
ONT
-
MSO
6h 15m
1 stop
$254Delta
Wed, Mar 18 - Wed, Mar 25
Delta Logo
6:04 pm - 11:51 pm
MSO
-
ONT
6h 47m
1 stop
Delta Logo
5:09 pm - 12:24 am
ONT
-
MSO
6h 15m
1 stop
$261Delta
Thu, Mar 19 - Wed, Mar 25
Delta Logo
6:18 pm - 10:43 pm
MSO
-
ONT
5h 25m
1 stop
Delta Logo
2:20 pm - 11:11 pm
ONT
-
MSO
7h 51m
2 stops
$263Delta
Sat, Apr 18 - Sat, Apr 25
Delta Logo
6:04 pm - 11:51 pm
MSO
-
ONT
6h 47m
1 stop
Delta Logo
11:59 am - 12:24 am
ONT
-
MSO
11h 25m
2 stops
$266Delta
Thu, Mar 19 - Wed, Mar 25
Alaska Airlines Logo
1:53 pm - 6:13 pm
MSO
-
ONT
5h 20m
1 stop
Alaska Airlines Logo
6:00 am - 12:31 pm
ONT
-
MSO
5h 31m
1 stop
$268Alaska Airlines
Wed, Mar 18 - Wed, Apr 1
Delta Logo
6:04 pm - 10:48 pm
MSO
-
ONT
5h 44m
1 stop
Delta Logo
5:09 pm - 12:24 am
ONT
-
MSO
6h 15m
1 stop
$269Delta
Sat, Mar 21 - Wed, Mar 25
Delta Logo
6:04 pm - 11:51 pm
MSO
-
ONT
6h 47m
1 stop
Delta Logo
6:00 am - 12:16 pm
ONT
-
MSO
5h 16m
1 stop
$271Delta
Thu, Mar 19 - Wed, Apr 1

Delta flights from Missoula to Ontario

Our best Delta deals on Missoula to Ontario flight tickets
Delta
Mar 21
MSO6:04 pmMissoula Johnson-Bell Field
5h 44m
1 stop
ONT10:48 pmOntario
Apr 1
ONT6:00 amOntario
5h 16m
1 stop
MSO12:16 pmMissoula Johnson-Bell Field
$249
Delta
Mar 18
MSO1:07 pmMissoula Johnson-Bell Field
10h 27m
2 stops
ONT10:34 pmOntario
Mar 25
ONT5:09 pmOntario
6h 15m
1 stop
MSO12:24 amMissoula Johnson-Bell Field
$254
Delta
Mar 19
MSO6:04 pmMissoula Johnson-Bell Field
6h 47m
1 stop
ONT11:51 pmOntario
Mar 25
ONT5:09 pmOntario
6h 15m
1 stop
MSO12:24 amMissoula Johnson-Bell Field
$261

Alaska Airlines flights from Missoula to Ontario

Our best Alaska Airlines deals on Missoula to Ontario flight tickets
Alaska Airlines
Mar 17
MSO4:20 pmMissoula Johnson-Bell Field
7h 24m
1 stop
ONT10:44 pmOntario
Apr 1
ONT6:00 amOntario
5h 31m
1 stop
MSO12:31 pmMissoula Johnson-Bell Field
$239
Alaska Airlines
Mar 18
MSO1:53 pmMissoula Johnson-Bell Field
5h 20m
1 stop
ONT6:13 pmOntario
Apr 1
ONT6:00 amOntario
5h 31m
1 stop
MSO12:31 pmMissoula Johnson-Bell Field
$268
Alaska Airlines
Mar 16
MSO6:23 amMissoula Johnson-Bell Field
5h 45m
1 stop
ONT11:08 amOntario
Mar 19
ONT10:33 amOntario
12h 24m
1 stop
MSO11:57 pmMissoula Johnson-Bell Field
$290

momondo Fare Finder

 
Customize your flight search to find flights from Missoula 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 February 14, 2026.
Use the filters below to find and compare flights from Missoula to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Sat 4/18

2:38 pm-8:36 pm

1 stop6h 58m

Ontario

Sat 4/25

1:34 pm-9:35 pm

1 stop7h 01m

$217

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Tue 3/17

4:20 pm-10:44 pm

1 stop7h 24m

Ontario

Wed 4/1

6:00 am-12:31 pm

1 stop5h 31m

$239

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Sat 3/21

6:04 pm-10:48 pm

1 stop5h 44m

Ontario

Wed 4/1

6:00 am-12:16 pm

1 stop5h 16m

$249

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Wed 3/18

1:07 pm-10:34 pm

2 stops10h 27m

Ontario

Wed 3/25

5:09 pm-12:24 am

1 stop6h 15m

$254

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Thu 3/19

6:04 pm-11:51 pm

1 stop6h 47m

Ontario

Wed 3/25

5:09 pm-12:24 am

1 stop6h 15m

$261

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Sat 4/18

6:18 pm-10:43 pm

1 stop5h 25m

Ontario

Sat 4/25

2:20 pm-11:11 pm

2 stops7h 51m

$263

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Thu 3/19

6:04 pm-11:51 pm

1 stop6h 47m

Ontario

Wed 3/25

11:59 am-12:24 am

2 stops11h 25m

$266

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Wed 3/18

1:53 pm-6:13 pm

1 stop5h 20m

Ontario

Wed 4/1

6:00 am-12:31 pm

1 stop5h 31m

$268

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Sat 3/21

6:04 pm-10:48 pm

1 stop5h 44m

Ontario

Wed 3/25

5:09 pm-12:24 am

1 stop6h 15m

$269

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Thu 3/19

6:04 pm-11:51 pm

1 stop6h 47m

Ontario

Wed 4/1

6:00 am-12:16 pm

1 stop5h 16m

$271

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 Missoula 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, January is the cheapest month to fly from Missoula to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $236. If you aren’t able to travel during the month of January, then book flights to Ontario from Missoula during February instead. Flights to Ontario in February, while not as cheap as those in January, still average around $273.

When to book flights from Missoula to Ontario

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

Cheap Missoula to Ontario (MSO to ONT) flight deals and tips

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

Fastest flight time

4h 16m

Direct flights

None
The fastest flight from Missoula to Ontario takes 4h 16m
There are no direct flights from Missoula to Ontario. There are no popular flight routes from Missoula to Ontario.
Search flight deals

  • How far is Missoula Johnson-Bell Field to Ontario by plane?

    There are 904.7 mi between Missoula Johnson-Bell Field and Ontario. In terms of flight time, this usually takes a little over 4h 16m.

  • When did momondo last update prices for flights from Missoula Johnson-Bell Field Airport to Ontario Airport?

    Prices for flights from Missoula Johnson-Bell Field Airport to Ontario Airport are updated daily.

  • How many operators does momondo search for flights from Missoula Johnson-Bell Field Airport to Ontario Airport?

  • How old do you have to be to fly from Missoula Johnson-Bell Field Airport to Ontario Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missoula Johnson-Bell Field Airport to Ontario Airport.

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

    The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Missoula to Ontario?

Best airlines flying from Missoula to Ontario

Compare and see reviews for airlines that fly from Missoula to Ontario with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $160Free CancellationRating
7.9
8,203 reviews
Search Delta flights
United AirlinesPriceFrom $273Free CancellationRating
7.4
9,289 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $276Free CancellationRating
8.0
11,882 reviews
Search Alaska Airlines flights

Why use momondo?

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

It is quick and easy to find Missoula to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

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

Yes. All flights to Ontario from Missoula on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Missoula 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 Missoula.

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

Price alerts on flights to Ontario from Missoula 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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