Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Missoula from $109

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 2/25. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ontario to Missoula

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:10 am - 1:36 pm
ONT
-
MSO
7h 26m
1 stop
United Airlines Logo
2:37 pm - 8:36 pm
MSO
-
ONT
6h 59m
1 stop
$217United Airlines
Tue, Apr 28 - Tue, May 5
Delta Logo
11:53 am - 12:16 am
ONT
-
MSO
11h 23m
2 stops
Delta Logo
6:18 pm - 11:44 pm
MSO
-
ONT
6h 26m
1 stop
$222Delta
Tue, Apr 28 - Tue, May 5
United Airlines Logo
1:45 pm - 9:57 pm
ONT
-
MSO
7h 12m
1 stop
United Airlines Logo
2:34 pm - 8:50 pm
MSO
-
ONT
7h 16m
1 stop
$239United Airlines
Tue, Feb 24 - Thu, Feb 26
Delta Logo
5:00 pm - 11:30 pm
ONT
-
MSO
5h 30m
1 stop
Delta Logo
6:10 pm - 11:49 pm
MSO
-
ONT
6h 39m
1 stop
$258Delta
Tue, Feb 24 - Wed, Feb 25
Delta Logo
5:00 pm - 11:30 pm
ONT
-
MSO
5h 30m
1 stop
Delta Logo
6:10 pm - 11:49 pm
MSO
-
ONT
6h 39m
1 stop
$261Delta
Thu, Feb 26 - Mon, Mar 2
Delta Logo
5:00 pm - 11:30 pm
ONT
-
MSO
5h 30m
1 stop
Delta Logo
5:15 am - 1:54 pm
MSO
-
ONT
9h 39m
2 stops
$263Delta
Tue, Feb 24 - Wed, Feb 25
Delta Logo
5:00 pm - 11:30 pm
ONT
-
MSO
5h 30m
1 stop
Delta Logo
6:10 pm - 11:49 pm
MSO
-
ONT
6h 39m
1 stop
$264Delta
Tue, Feb 24 - Fri, Feb 27
Delta Logo
5:00 pm - 11:30 pm
ONT
-
MSO
5h 30m
1 stop
Delta Logo
1:16 pm - 10:37 pm
MSO
-
ONT
10h 21m
2 stops
$266Delta
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
5:00 am - 1:32 pm
ONT
-
MSO
7h 32m
1 stop
United Airlines Logo
6:15 am - 12:43 pm
MSO
-
ONT
7h 28m
1 stop
$269United Airlines
Mon, Feb 23 - Wed, Feb 25
Delta Logo
6:00 am - 12:16 pm
ONT
-
MSO
5h 16m
1 stop
Delta Logo
6:04 pm - 11:51 pm
MSO
-
ONT
6h 47m
1 stop
$276Delta
Wed, Apr 1 - Mon, Apr 6

United Airlines flights from Ontario to Missoula

Our best United Airlines deals on Ontario to Missoula flight tickets
United Airlines
Apr 28
ONT5:10 amOntario
7h 26m
1 stop
MSO1:36 pmMissoula Johnson-Bell Field
May 5
MSO2:37 pmMissoula Johnson-Bell Field
6h 59m
1 stop
ONT8:36 pmOntario
$217
United Airlines
Feb 24
ONT1:45 pmOntario
7h 12m
1 stop
MSO9:57 pmMissoula Johnson-Bell Field
Feb 26
MSO2:34 pmMissoula Johnson-Bell Field
7h 16m
1 stop
ONT8:50 pmOntario
$239
United Airlines
Feb 23
ONT5:00 amOntario
7h 32m
1 stop
MSO1:32 pmMissoula Johnson-Bell Field
Feb 25
MSO6:15 amMissoula Johnson-Bell Field
7h 28m
1 stop
ONT12:43 pmOntario
$269

Alaska Airlines flights from Ontario to Missoula

Our best Alaska Airlines deals on Ontario to Missoula flight tickets
Alaska Airlines
Mar 17
ONT4:02 pmOntario
6h 57m
1 stop
MSO11:59 pmMissoula Johnson-Bell Field
Mar 18
MSO7:00 amMissoula Johnson-Bell Field
9h 42m
2 stops
ONT3:42 pmOntario
$285
Alaska Airlines
May 12
ONT6:00 amOntario
7h 59m
1 stop
MSO2:59 pmMissoula Johnson-Bell Field
May 28
MSO1:53 pmMissoula Johnson-Bell Field
5h 54m
1 stop
ONT6:47 pmOntario
$290
Alaska Airlines
Mar 17
ONT6:14 amOntario
5h 07m
1 stop
MSO12:21 pmMissoula Johnson-Bell Field
Mar 18
MSO4:23 pmMissoula Johnson-Bell Field
8h 36m
1 stop
ONT11:59 pmOntario
$300

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 February 5, 2026.
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

Tue 4/28

5:10 am-1:36 pm

1 stop7h 26m

Missoula Johnson-Bell Field

Tue 5/5

2:37 pm-8:36 pm

1 stop6h 59m

$217

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 4/28

11:53 am-12:16 am

2 stops11h 23m

Missoula Johnson-Bell Field

Tue 5/5

6:18 pm-11:44 pm

1 stop6h 26m

$222

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 2/24

1:45 pm-9:57 pm

1 stop7h 12m

Missoula Johnson-Bell Field

Thu 2/26

2:34 pm-8:50 pm

1 stop7h 16m

$239

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 2/24

5:00 pm-11:30 pm

1 stop5h 30m

Missoula Johnson-Bell Field

Wed 2/25

6:10 pm-11:49 pm

1 stop6h 39m

$258

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 2/26

5:00 pm-11:30 pm

1 stop5h 30m

Missoula Johnson-Bell Field

Mon 3/2

6:10 pm-11:49 pm

1 stop6h 39m

$261

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 2/24

5:00 pm-11:30 pm

1 stop5h 30m

Missoula Johnson-Bell Field

Wed 2/25

5:15 am-1:54 pm

2 stops9h 39m

$263

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 2/24

5:00 pm-11:30 pm

1 stop5h 30m

Missoula Johnson-Bell Field

Fri 2/27

6:10 pm-11:49 pm

1 stop6h 39m

$264

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 2/26

5:00 pm-11:30 pm

1 stop5h 30m

Missoula Johnson-Bell Field

Mon 3/2

1:16 pm-10:37 pm

2 stops10h 21m

$266

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Mon 2/23

5:00 am-1:32 pm

1 stop7h 32m

Missoula Johnson-Bell Field

Wed 2/25

6:15 am-12:43 pm

1 stop7h 28m

$269

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Wed 4/1

6:00 am-12:16 pm

1 stop5h 16m

Missoula Johnson-Bell Field

Mon 4/6

6:04 pm-11:51 pm

1 stop6h 47m

$276

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 typical price of a round-trip flight between Ontario and Missoula?

What is the cheapest month to fly to Missoula?

The month of April is, on average, the cheapest month to fly to Missoula from Ontario, with most prices found around $258. If you are unable to visit Missoula during the month of April, then departing from Ontario during the month January is also very affordable. Most momondo users find prices during this month for around $264.

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 Sunday. momondo users have found tickets for Sunday departures for as low as $289. 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 afternoon when flights can be purchased for as low as $229. Flights in the morning are often more expensive with an average ticket price of $415.

How have Ontario to Missoula flight prices changed over time?

As of February 2026, prices for Ontario to Missoula flights are approximately 9% more expensive when compared to flights at the same time last year.

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

5h 30m

Direct flights

None
The fastest flight from Ontario to Missoula takes 5h 30m
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. 5h 30m 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 $240Free CancellationRating
7.9
8,151 reviews
Search Delta flights
Alaska AirlinesPriceFrom $244Free CancellationRating
8.0
11,840 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.

An easier way to manage your Missoula trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 3/7
Sat 3/14
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States