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Missoula

$130+ Cheap flights from Ontario to Missoula (ONT - MSO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MSO
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Ontario to Missoula

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Missoula (MSO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2025.

Round-trip from

$260
(Hawaiian Airlines)

One-way from

$130
(Hawaiian Airlines)

Popular in

February

Cheapest in

January

Average price

$356
From Ontario to Missoula Johnson-Bell Field
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One-way flight from Ontario to Missoula Johnson-Bell Field
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Highest demand for flights based on searches. 11% potential increase in price ($57 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Ontario to Missoula

Cheapest flights from Ontario to Missoula
Explore the most affordable flight options available from Ontario to Missoula. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/286:00 amONT - MSO
1 stop5h 19mHawaiian Airlines
Wed 11/51:59 pmMSO - ONT
1 stop7h 54mHawaiian Airlines
Deal found 9/16$260
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2811:48 amONT - MSO
2 stops11h 29mDelta
Wed 11/56:20 pmMSO - ONT
1 stop4h 00mDelta
Deal found 9/16$266
This Hawaiian Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:00 amONT - MSO
1 stop5h 18mHawaiian Airlines
Sat 10/186:37 amMSO - ONT
1 stop7h 00mHawaiian Airlines
Deal found 9/15$281
This Trip.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/225:45 pmONT - MSO
1 stop5h 14mMultiple Airlines
Sun 10/265:30 amMSO - ONT
2 stops19h 37mMultiple Airlines
Deal found 9/15$283
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:00 amONT - MSO
1 stop5h 18mAlaska Airlines
Sat 10/182:07 pmMSO - ONT
1 stop10h 56mAlaska Airlines
Deal found 9/16$286
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/13:06 pmONT - MSO
1 stop8h 21mAlaska Airlines
Wed 10/84:12 pmMSO - ONT
1 stop8h 51mAlaska Airlines
Deal found 9/16$290
This Hawaiian Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:00 amONT - MSO
1 stop5h 18mHawaiian Airlines
Mon 10/206:40 pmMSO - ONT
1 stop6h 23mHawaiian Airlines
Deal found 9/14$295
This Hawaiian Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:00 amONT - MSO
1 stop5h 18mHawaiian Airlines
Sun 10/265:30 amMSO - ONT
1 stop5h 28mHawaiian Airlines
Deal found 9/15$296
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:43 pmONT - MSO
1 stop15h 35mAlaska Airlines
Wed 11/56:32 amMSO - ONT
2 stops11h 37mAlaska Airlines
Deal found 9/15$307
This Alaska Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:03 pmONT - MSO
1 stop5h 10mAlaska Airlines
Wed 11/126:32 amMSO - ONT
2 stops11h 37mAlaska Airlines
Deal found 9/14$317
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/14:40 pmONT - MSO
1 stop6h 38mDelta
Wed 10/81:07 pmMSO - ONT
2 stops10h 34mDelta
Deal found 9/16$321

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Ontario to Missoula that are best for you.

Fly from

Ontario

Fly to

Missoula

Route

Depart

Return

Price

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Mon 11/17

6:03 pm-12:13 am

1 stop5h 10m

Missoula Johnson-Bell Field

Mon 12/8

4:22 pm-11:29 pm

1 stop8h 07m

$260

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Wed 1/28

4:05 pm-11:57 pm

1 stop6h 52m

Missoula Johnson-Bell Field

Tue 2/10

6:30 pm-10:37 pm

1 stop5h 07m

$260

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 2/26

6:00 pm-11:59 pm

1 stop4h 59m

Missoula Johnson-Bell Field

Mon 3/2

1:20 pm-4:53 pm

1 stop4h 33m

$260

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 1/29

11:30 am-5:56 pm

1 stop5h 26m

Missoula Johnson-Bell Field

Tue 2/10

6:30 pm-10:37 pm

1 stop5h 07m

$260

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 10/28

4:11 pm-11:43 pm

1 stop6h 32m

Missoula Johnson-Bell Field

Wed 11/5

12:59 pm-5:09 pm

1 stop5h 10m

$260

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Wed 10/15

7:43 pm-12:18 pm

1 stop15h 35m

Missoula Johnson-Bell Field

Wed 11/5

1:59 pm-8:53 pm

1 stop7h 54m

$260

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Mon 11/10

6:03 pm-12:13 am

1 stop5h 10m

Missoula Johnson-Bell Field

Mon 11/17

1:59 pm-8:53 pm

1 stop7h 54m

$260

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Wed 1/28

6:00 am-12:43 pm

1 stop5h 43m

Missoula Johnson-Bell Field

Mon 2/9

6:10 pm-11:52 pm

1 stop6h 42m

$261

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 2/26

6:45 am-5:27 pm

2 stops9h 42m

Missoula Johnson-Bell Field

Mon 3/2

6:10 pm-11:52 pm

1 stop6h 42m

$266

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 10/28

11:48 am-12:17 am

2 stops11h 29m

Missoula Johnson-Bell Field

Wed 11/5

6:20 pm-9:20 pm

1 stop4h 00m

$266

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 22 results
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Best time to book a flight from Ontario to Missoula

Have a flexible travel schedule? Discover the best time to fly to Missoula from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Missoula

What is the cheapest month to book a flight from Ontario to Missoula?

Currently, October is the cheapest month in which you can book a flight from Ontario to Missoula (average of $365). Flying from Ontario to Missoula in March is currently the most expensive (average of $505). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to MSO?

Find hourly flight availability from Ontario to Missoula. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Missoula in the evening. If you’re flexible enough to do this you can expect to save up to 55% on your trip compared to booking a flight at noon.

Reviews of airlines servicing Missoula

Get insights into the airlines that provide service to Missoula. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Missoula. Reviews last updated September 16, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines and Delta from Ontario to Missoula to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,954 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Missoula. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Missoula?

    Hawaiian Airlines and Alaska Airlines can get you from Ontario to Missoula in just under 5h 10m. Your travel time can differ by up to 1h 42m. Airlines will cover a distance of 907 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Ontario to Missoula round-trip?

    Delta, at $198, was found to be the cheapest airline from Ontario to Missoula. An alternate airline flying to your destination would be Alaska Airlines. Delta is priced at 52% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Ontario to Missoula that include hotel bookings?

    Yes. In addition to deals on Ontario to Missoula flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Missoula?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Missoula.

  • Can I find deals for business class flights from Ontario to Missoula?

    Yes. Cheapflights offers flight deals from Ontario to Missoula by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Missoula?

    Currently, October is the cheapest month in which you can book a flight from Ontario to Missoula (average of $365). Flying from Ontario to Missoula in March is currently the most expensive (average of $505). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top 2 airlines flying from Ontario to Missoula

Discover the top 2 airlines that operate flights from Ontario to Missoula. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$198Average$284FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$273Average$407FlexibilityNo cancel feeOn-time75%

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