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Cheap flights from Ontario to Missoula from $212

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 11/7. 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.
Alaska Airlines Logo
6:00 am - 1:52 pmONT-MSO
6h 52m1 stop
Alaska Airlines Logo
1:20 pm - 7:47 pmMSO-ONT
7h 27m1 stop
$260Alaska Airlines
Find Deal
Thu, Feb 26 - Mon, Mar 2
Delta Logo
6:00 am - 11:59 amONT-MSO
4h 59m1 stop
Delta Logo
6:05 pm - 10:38 pmMSO-ONT
5h 33m1 stop
$261Delta
Find Deal
Mon, Jan 12 - Fri, Jan 16
Delta Logo
5:03 pm - 12:29 amONT-MSO
6h 26m1 stop
Delta Logo
12:40 pm - 10:29 pmMSO-ONT
10h 49m2 stops
$292Delta
Find Deal
Thu, Feb 5 - Sat, Feb 7
Alaska Airlines Logo
7:00 am - 1:23 pmONT-MSO
5h 23m1 stop
Alaska Airlines Logo
6:23 am - 1:06 pmMSO-ONT
7h 43m2 stops
$297Alaska Airlines
Find Deal
Thu, Jan 15 - Tue, Feb 3
Alaska Airlines Logo
3:33 pm - 11:55 pmONT-MSO
7h 22m1 stop
Alaska Airlines Logo
6:30 pm - 10:38 pmMSO-ONT
5h 08m1 stop
$304Alaska Airlines
Find Deal
Wed, Apr 29 - Sat, May 2
United Airlines Logo
1:45 pm - 9:57 pmONT-MSO
7h 12m1 stop
United Airlines Logo
6:15 am - 12:43 pmMSO-ONT
7h 28m1 stop
$331United Airlines
Find Deal
Tue, Feb 17 - Wed, Feb 25
Frontier Logo
12:58 am - 6:06 pmONT-MSO
16h 08m1 stop
Frontier Logo
7:01 pm - 11:57 pmMSO-ONT
5h 56m1 stop
$455Frontier
Find Deal
Thu, Nov 20 - Fri, Nov 28
United Airlines Logo
5:05 am - 1:33 pmONT-MSO
7h 28m1 stop
United Airlines Logo
6:20 am - 1:22 amMSO-ONT
20h 02m1 stop
$690United Airlines
Find Deal
Mon, Nov 24 - Sat, Nov 29
American Airlines Logo
9:53 am - 9:24 pmONT-MSO
10h 31m2 stops
American Airlines Logo
7:00 am - 4:07 pmMSO-ONT
10h 07m2 stops
$869American Airlines
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Tue, Dec 23 - Wed, Dec 31
American Airlines Logo
9:53 am - 9:24 pmONT-MSO
10h 31m2 stops
American Airlines Logo
7:00 am - 4:07 pmMSO-ONT
10h 07m2 stops
$1,167American Airlines
Find Deal
Thu, Jan 1 - Sat, Jan 3

Alaska Airlines flights from Ontario to Missoula

Our best Alaska Airlines deals on Ontario to Missoula flight tickets
Alaska Airlines
Feb 26
ONT6:00 amOntario
6h 52m
1 stop
MSO1:52 pmMissoula Johnson-Bell Field
Mar 2
MSO1:20 pmMissoula Johnson-Bell Field
7h 27m
1 stop
ONT7:47 pmOntario
$260
Find similar
Alaska Airlines
Jan 15
ONT7:00 amOntario
5h 23m
1 stop
MSO1:23 pmMissoula Johnson-Bell Field
Feb 3
MSO6:23 amMissoula Johnson-Bell Field
7h 43m
2 stops
ONT1:06 pmOntario
$297
Find similar
Alaska Airlines
Apr 29
ONT3:33 pmOntario
7h 22m
1 stop
MSO11:55 pmMissoula Johnson-Bell Field
May 2
MSO6:30 pmMissoula Johnson-Bell Field
5h 08m
1 stop
ONT10:38 pmOntario
$304
Find similar

Delta flights from Ontario to Missoula

Our best Delta deals on Ontario to Missoula flight tickets
Delta
Jan 12
ONT6:00 amOntario
4h 59m
1 stop
MSO11:59 amMissoula Johnson-Bell Field
Jan 16
MSO6:05 pmMissoula Johnson-Bell Field
5h 33m
1 stop
ONT10:38 pmOntario
$261
Find similar
Delta
Feb 5
ONT5:03 pmOntario
6h 26m
1 stop
MSO12:29 amMissoula Johnson-Bell Field
Feb 7
MSO12:40 pmMissoula Johnson-Bell Field
10h 49m
2 stops
ONT10:29 pmOntario
$292
Find similar
Delta
Jan 19
ONT6:00 amOntario
4h 59m
1 stop
MSO11:59 amMissoula Johnson-Bell Field
Jan 23
MSO6:05 pmMissoula Johnson-Bell Field
6h 53m
1 stop
ONT11:58 pmOntario
$320
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 November 3, 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

6:00 am-1:52 pm

1 stop6h 52m

Missoula Johnson-Bell Field

Mon 3/2

1:20 pm-7:47 pm

1 stop7h 27m

$260

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Mon 1/12

6:00 am-11:59 am

1 stop4h 59m

Missoula Johnson-Bell Field

Fri 1/16

6:05 pm-10:38 pm

1 stop5h 33m

$261

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 2/5

5:03 pm-12:29 am

1 stop6h 26m

Missoula Johnson-Bell Field

Sat 2/7

12:40 pm-10:29 pm

2 stops10h 49m

$292

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 1/15

7:00 am-1:23 pm

1 stop5h 23m

Missoula Johnson-Bell Field

Tue 2/3

6:23 am-1:06 pm

2 stops7h 43m

$297

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Wed 4/29

3:33 pm-11:55 pm

1 stop7h 22m

Missoula Johnson-Bell Field

Sat 5/2

6:30 pm-10:38 pm

1 stop5h 08m

$304

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 2/17

1:45 pm-9:57 pm

1 stop7h 12m

Missoula Johnson-Bell Field

Wed 2/25

6:15 am-12:43 pm

1 stop7h 28m

$331

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 11/20

12:58 am-6:06 pm

1 stop16h 08m

Missoula Johnson-Bell Field

Fri 11/28

7:01 pm-11:57 pm

1 stop5h 56m

$455

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Mon 11/24

5:05 am-1:33 pm

1 stop7h 28m

Missoula Johnson-Bell Field

Sat 11/29

6:20 am-1:22 am

1 stop20h 02m

$690

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 12/23

9:53 am-9:24 pm

2 stops10h 31m

Missoula Johnson-Bell Field

Wed 12/31

7:00 am-4:07 pm

2 stops10h 07m

$869

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 1/1

9:53 am-9:24 pm

2 stops10h 31m

Missoula Johnson-Bell Field

Sat 1/3

7:00 am-4:07 pm

2 stops10h 07m

$1,167

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 $250. 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

Direct flights

None
There are no direct flights from Ontario to Missoula. There are no popular flight routes from Ontario to Missoula.
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  • How far is Ontario to Missoula Johnson-Bell Field by plane?

    There are 904.7 mi between Ontario and Missoula Johnson-Bell Field. 4h 51m 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 $198Free CancellationRating
7.9
8,001 reviews
Search Delta flights
Alaska AirlinesPriceFrom $284Free CancellationRating
8.0
11,235 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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