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Cheap flights from Ontario to Missoula from $115

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 10/12. 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

Frontier Logo
5:21 pm - 11:54 amONT-MSO
17h 33m1 stop
Frontier Logo
12:40 pm - 11:50 pmMSO-ONT
12h 10m1 stop
$227Frontier
Find Deal
Thu, Aug 14 - Mon, Aug 18
Alaska Airlines Logo
6:00 am - 3:18 pmONT-MSO
8h 18m1 stop
Alaska Airlines Logo
6:40 pm - 12:03 amMSO-ONT
6h 23m1 stop
$235Alaska Airlines
Find Deal
Mon, Sep 22 - Mon, Sep 22
Alaska Airlines Logo
5:49 pm - 11:59 pmONT-MSO
5h 10m1 stop
Alaska Airlines Logo
2:14 pm - 6:47 pmMSO-ONT
5h 33m1 stop
$240Alaska Airlines
Find Deal
Mon, Sep 15 - Tue, Sep 23
Delta Logo
9:50 am - 5:40 pmONT-MSO
6h 50m1 stop
Delta Logo
6:20 pm - 11:42 pmMSO-ONT
6h 22m1 stop
$241Delta
Find Deal
Sun, Sep 21 - Wed, Sep 24
Delta Logo
11:50 am - 12:18 amONT-MSO
11h 28m2 stops
Delta Logo
5:30 am - 8:57 amMSO-ONT
4h 27m1 stop
$246Delta
Find Deal
Tue, Sep 16 - Tue, Sep 23
Delta Logo
11:50 am - 12:18 amONT-MSO
11h 28m2 stops
Delta Logo
1:05 pm - 10:40 pmMSO-ONT
10h 35m2 stops
$251Delta
Find Deal
Tue, Sep 16 - Wed, Sep 24
Alaska Airlines Logo
5:49 pm - 11:59 pmONT-MSO
5h 10m1 stop
Alaska Airlines Logo
5:45 am - 9:26 amMSO-ONT
4h 41m1 stop
$259Alaska Airlines
Find Deal
Sat, Sep 13 - Tue, Sep 23
Delta Logo
9:50 am - 5:07 pmONT-MSO
6h 17m1 stop
Delta Logo
5:30 am - 8:57 amMSO-ONT
4h 27m1 stop
$260Delta
Find Deal
Sat, Sep 13 - Fri, Sep 19
United Airlines Logo
5:10 am - 1:34 pmONT-MSO
7h 24m1 stop
United Airlines Logo
2:33 pm - 8:24 pmMSO-ONT
6h 51m1 stop
$311United Airlines
Find Deal
Mon, Sep 1 - Tue, Sep 30
United Airlines Logo
5:10 am - 1:34 pmONT-MSO
7h 24m1 stop
United Airlines Logo
6:30 am - 12:32 pmMSO-ONT
7h 02m1 stop
$330United Airlines
Find Deal
Wed, Aug 27 - Sat, Aug 30

Frontier flights from Ontario to Missoula

Our best Frontier deals on Ontario to Missoula flight tickets
Frontier
Aug 3
ONT12:59 amOntario
9h 55m
1 stop
MSO11:54 amMissoula Johnson-Bell Field
Aug 8
MSO12:40 pmMissoula Johnson-Bell Field
12h 10m
1 stop
ONT11:50 pmOntario
$218
Find similar
Frontier
Aug 14
ONT5:21 pmOntario
17h 33m
1 stop
MSO11:54 amMissoula Johnson-Bell Field
Aug 18
MSO12:40 pmMissoula Johnson-Bell Field
12h 10m
1 stop
ONT11:50 pmOntario
$227
Find similar

Alaska Airlines flights from Ontario to Missoula

Our best Alaska Airlines deals on Ontario to Missoula flight tickets
Alaska Airlines
Sep 22
ONT6:00 amOntario
8h 18m
1 stop
MSO3:18 pmMissoula Johnson-Bell Field
Sep 22
MSO6:40 pmMissoula Johnson-Bell Field
6h 23m
1 stop
ONT12:03 amOntario
$235
Find similar
Alaska Airlines
Sep 15
ONT5:49 pmOntario
5h 10m
1 stop
MSO11:59 pmMissoula Johnson-Bell Field
Sep 23
MSO2:14 pmMissoula Johnson-Bell Field
5h 33m
1 stop
ONT6:47 pmOntario
$240
Find similar
Alaska Airlines
Sep 13
ONT5:49 pmOntario
5h 10m
1 stop
MSO11:59 pmMissoula Johnson-Bell Field
Sep 23
MSO5:45 amMissoula Johnson-Bell Field
4h 41m
1 stop
ONT9:26 amOntario
$259
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 July 31, 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 8/14

5:21 pm-11:54 am

1 stop17h 33m

Missoula Johnson-Bell Field

Mon 8/18

12:40 pm-11:50 pm

1 stop12h 10m

$227

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Mon 9/22

6:00 am-3:18 pm

1 stop8h 18m

Missoula Johnson-Bell Field

Mon 9/22

6:40 pm-12:03 am

1 stop6h 23m

$235

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Mon 9/15

5:49 pm-11:59 pm

1 stop5h 10m

Missoula Johnson-Bell Field

Tue 9/23

2:14 pm-6:47 pm

1 stop5h 33m

$240

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Sun 9/21

9:50 am-5:40 pm

1 stop6h 50m

Missoula Johnson-Bell Field

Wed 9/24

6:20 pm-11:42 pm

1 stop6h 22m

$241

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 9/16

11:50 am-12:18 am

2 stops11h 28m

Missoula Johnson-Bell Field

Tue 9/23

5:30 am-8:57 am

1 stop4h 27m

$246

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 9/16

11:50 am-12:18 am

2 stops11h 28m

Missoula Johnson-Bell Field

Wed 9/24

1:05 pm-10:40 pm

2 stops10h 35m

$251

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Sat 9/13

5:49 pm-11:59 pm

1 stop5h 10m

Missoula Johnson-Bell Field

Tue 9/23

5:45 am-9:26 am

1 stop4h 41m

$259

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Sat 9/13

9:50 am-5:07 pm

1 stop6h 17m

Missoula Johnson-Bell Field

Fri 9/19

5:30 am-8:57 am

1 stop4h 27m

$260

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Mon 9/1

5:10 am-1:34 pm

1 stop7h 24m

Missoula Johnson-Bell Field

Tue 9/30

2:33 pm-8:24 pm

1 stop6h 51m

$311

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Wed 8/27

5:10 am-1:34 pm

1 stop7h 24m

Missoula Johnson-Bell Field

Sat 8/30

6:30 am-12:32 pm

1 stop7h 02m

$330

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

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 $351. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Tuesday 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 $516.

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

Best Price Found

$115

Fastest flight time

5h 10m

Direct flights

None

Airports in Missoula

1 airport
The best one-way flight to Missoula from Ontario in the past 72 hours is $115. The best round-trip flight deal from Ontario to Missoula found on momondo in the last 72 hours is $227.
The fastest flight from Ontario to Missoula takes 5h 10m
There are no direct flights from Ontario to Missoula. Popular non-direct route for this connection is Ontario Airport - Missoula Johnson-Bell Field Airport.
There is 1 airport near Missoula: Missoula Johnson-Bell Field (MSO)
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 10m 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
8.0
7,981 reviews
Search Delta flights
Alaska AirlinesPriceFrom $273Free CancellationRating
8.0
10,000 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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