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Cheap flights from Ontario to Missoula from $161

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Missoula departing on 1/11. 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 Ontario to Missoula

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:22 pm - 3:15 pm
ONT
-
MSO
18h 53m1 stop
Multiple Airlines Logo
4:05 pm - 1:11 pm
MSO
-
ONT
22h 06m1 stop
$225Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Alaska Airlines Logo
7:00 am - 12:59 pm
ONT
-
MSO
4h 59m1 stop
Alaska Airlines Logo
6:23 am - 11:08 am
MSO
-
ONT
5h 45m1 stop
$243Alaska Airlines
Tue, Feb 24 - Tue, Mar 3
Alaska Airlines Logo
4:02 pm - 11:59 pm
ONT
-
MSO
6h 57m1 stop
Alaska Airlines Logo
6:23 am - 11:08 am
MSO
-
ONT
5h 45m1 stop
$244Alaska Airlines
Wed, Feb 25 - Tue, Mar 3
Delta Logo
7:30 am - 5:23 pm
ONT
-
MSO
8h 53m2 stops
Delta Logo
1:16 pm - 10:37 pm
MSO
-
ONT
10h 21m2 stops
$246Delta
Tue, Feb 24 - Tue, Mar 3
Delta Logo
6:00 am - 12:26 pm
ONT
-
MSO
5h 26m1 stop
Delta Logo
1:16 pm - 10:37 pm
MSO
-
ONT
10h 21m2 stops
$253Delta
Wed, Feb 25 - Tue, Mar 3
Alaska Airlines Logo
4:03 pm - 3:31 pm
ONT
-
MSO
22h 28m1 stop
Alaska Airlines Logo
6:23 am - 10:59 am
MSO
-
ONT
5h 36m1 stop
$254Alaska Airlines
Fri, Feb 6 - Mon, Feb 9
Multiple Airlines Logo
7:22 pm - 3:15 pm
ONT
-
MSO
18h 53m1 stop
Multiple Airlines Logo
4:05 pm - 9:34 pm
MSO
-
ONT
30h 29m2 stops
$257Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Alaska Airlines Logo
7:00 am - 12:59 pm
ONT
-
MSO
4h 59m1 stop
Alaska Airlines Logo
6:23 am - 11:08 am
MSO
-
ONT
5h 45m1 stop
$260Alaska Airlines
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
1:45 pm - 9:57 pm
ONT
-
MSO
7h 12m1 stop
United Airlines Logo
2:34 pm - 8:50 pm
MSO
-
ONT
7h 16m1 stop
$261United Airlines
Thu, Feb 26 - Mon, Mar 2
Alaska Airlines Logo
4:02 pm - 11:59 pm
ONT
-
MSO
6h 57m1 stop
Alaska Airlines Logo
6:23 am - 11:08 am
MSO
-
ONT
5h 45m1 stop
$263Alaska Airlines
Sat, Feb 28 - Tue, Mar 3

Delta flights from Ontario to Missoula

Our best Delta deals on Ontario to Missoula flight tickets
Delta
Feb 24
ONT7:30 amOntario
8h 53m
2 stops
MSO5:23 pmMissoula Johnson-Bell Field
Mar 3
MSO1:16 pmMissoula Johnson-Bell Field
10h 21m
2 stops
ONT10:37 pmOntario
$246
Find similar
Delta
Feb 25
ONT5:00 pmOntario
6h 29m
1 stop
MSO12:29 amMissoula Johnson-Bell Field
Mar 4
MSO1:16 pmMissoula Johnson-Bell Field
10h 21m
2 stops
ONT10:37 pmOntario
$253
Find similar
Delta
Feb 24
ONT6:00 amOntario
5h 26m
1 stop
MSO12:26 pmMissoula Johnson-Bell Field
Feb 26
MSO1:16 pmMissoula Johnson-Bell Field
10h 21m
2 stops
ONT10:37 pmOntario
$266
Find similar

United Airlines flights from Ontario to Missoula

Our best United Airlines deals on Ontario to Missoula flight tickets
United Airlines
Feb 26
ONT1:45 pmOntario
7h 12m
1 stop
MSO9:57 pmMissoula Johnson-Bell Field
Mar 2
MSO2:34 pmMissoula Johnson-Bell Field
7h 16m
1 stop
ONT8:50 pmOntario
$261
Find similar
United Airlines
Jan 5
ONT5:05 amOntario
7h 31m
1 stop
MSO1:36 pmMissoula Johnson-Bell Field
Jan 7
MSO6:00 amMissoula Johnson-Bell Field
7h 47m
1 stop
ONT12:47 pmOntario
$279
Find similar
United Airlines
Jan 3
ONT6:00 amOntario
5h 47m
1 stop
MSO12:47 pmMissoula Johnson-Bell Field
Jan 10
MSO6:00 amMissoula Johnson-Bell Field
7h 47m
1 stop
ONT12:47 pmOntario
$433
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Missoula 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 December 18, 2025.
Use the filters below to find and compare flights from Ontario to Missoula that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 2/26

7:22 pm-3:15 pm

1 stop18h 53m

Missoula Johnson-Bell Field

Mon 3/2

4:05 pm-1:11 pm

1 stop22h 06m

$225

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 2/24

7:00 am-12:59 pm

1 stop4h 59m

Missoula Johnson-Bell Field

Tue 3/3

6:23 am-11:08 am

1 stop5h 45m

$243

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Wed 2/25

4:02 pm-11:59 pm

1 stop6h 57m

Missoula Johnson-Bell Field

Tue 3/3

6:23 am-11:08 am

1 stop5h 45m

$244

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 2/24

7:30 am-5:23 pm

2 stops8h 53m

Missoula Johnson-Bell Field

Tue 3/3

1:16 pm-10:37 pm

2 stops10h 21m

$246

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Wed 2/25

6:00 am-12:26 pm

1 stop5h 26m

Missoula Johnson-Bell Field

Tue 3/3

1:16 pm-10:37 pm

2 stops10h 21m

$253

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Fri 2/6

4:03 pm-3:31 pm

1 stop22h 28m

Missoula Johnson-Bell Field

Mon 2/9

6:23 am-10:59 am

1 stop5h 36m

$254

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 2/26

7:22 pm-3:15 pm

1 stop18h 53m

Missoula Johnson-Bell Field

Mon 3/2

4:05 pm-9:34 pm

2 stops30h 29m

$257

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 2/26

7:00 am-12:59 pm

1 stop4h 59m

Missoula Johnson-Bell Field

Mon 3/2

6:23 am-11:08 am

1 stop5h 45m

$260

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 2/26

1:45 pm-9:57 pm

1 stop7h 12m

Missoula Johnson-Bell Field

Mon 3/2

2:34 pm-8:50 pm

1 stop7h 16m

$261

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Sat 2/28

4:02 pm-11:59 pm

1 stop6h 57m

Missoula Johnson-Bell Field

Tue 3/3

6:23 am-11:08 am

1 stop5h 45m

$263

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 Missoula from

How to get the cheapest flight ticket from Ontario to Missoula

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 Missoula?

The month of January is, on average, the cheapest month to fly to Missoula from Ontario, with most prices found around $264. If you are unable to visit Missoula during the month of January, then departing from Ontario during the month April is also very affordable. Most momondo users find prices during this month for around $274.

What is the cheapest day to depart on your flight to Missoula?

On average, the least expensive day to fly to Missoula from Ontario is on a Saturday. momondo users have found tickets for Saturday departures for as low as $337. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Ontario because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $478.

What is the cheapest time of day to depart on your flight to Missoula?

The cheapest time of day to fly to Missoula is in the evening when flights can be purchased for as low as $420. Flights in the afternoon are often more expensive with an average ticket price of $498.

When to book flights from Ontario to Missoula

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

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

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

Fastest flight time

4h 59m

Direct flights

None
The fastest flight from Ontario to Missoula takes 4h 59m
There are no direct flights from Ontario to Missoula. There are no popular flight routes from Ontario to Missoula.
Search flight deals

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

    There are 904.7 mi between Ontario and Missoula Johnson-Bell Field. 4h 59m is a normal flight duration for this route.

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

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

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

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

  • What documentation or ID do you need to fly to Missoula Johnson-Bell Field Airport?

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

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

Best airlines flying from Ontario to Missoula

Compare and see reviews for airlines that fly from Ontario to Missoula with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $236Free CancellationRating
7.9
8,008 reviews
Search Delta flights
Alaska AirlinesPriceFrom $264Free CancellationRating
8.0
11,478 reviews
Search Alaska Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Missoula. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Ontario to Missoula flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Missoula.

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

If you are not ready to book a flight from Ontario to Missoula now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Missoula and let you know when they change.

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