HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MSO
Dec 10 — Dec 171
Wed 12/10
Wed 12/17
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Missoula with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 November 10, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/8. 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.
Sat 12/66:00 amONT - MSO
1 stop8h 32mAlaska Airlines
Tue 12/96:29 amMSO - ONT
1 stop13h 04mAlaska Airlines
Deal found 11/8$264
This Trip.com deal was found by Cheapflights users on 11/9. 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.
Thu 11/2012:58 amONT - MSO
1 stop16h 08mFrontier
Fri 11/287:01 pmMSO - ONT
1 stop5h 56mFrontier
Deal found 11/9$298
This Alaska Airlines deal was found by Cheapflights users on 11/7. 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.
Fri 12/127:33 pmONT - MSO
1 stop15h 59mAlaska Airlines
Sun 12/146:29 amMSO - ONT
1 stop5h 50mAlaska Airlines
Deal found 11/7$323
This Delta deal was found by Cheapflights users on 11/7. 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.
Fri 12/124:49 pmONT - MSO
1 stop6h 47mDelta
Sun 12/146:16 pmMSO - ONT
1 stop6h 42mDelta
Deal found 11/7$329
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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.
Fri 12/196:00 amONT - MSO
1 stop16h 42mAlaska Airlines
Wed 12/246:00 amMSO - ONT
1 stop19h 14mAlaska Airlines
Deal found 11/9$397
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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.
Sun 12/146:00 amONT - MSO
1 stop17h 26mAlaska Airlines
Sat 12/204:21 pmMSO - ONT
1 stop8h 53mAlaska Airlines
Deal found 11/9$398
This Alaska Airlines deal was found by Cheapflights users on 11/9. 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.
Mon 12/227:19 pmONT - MSO
1 stop27h 23mAlaska Airlines
Fri 12/266:00 amMSO - ONT
1 stop19h 14mAlaska Airlines
Deal found 11/9$427
This Alaska Airlines deal was found by Cheapflights users on 11/8. 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.
Fri 12/127:33 pmONT - MSO
1 stop18h 59mAlaska Airlines
Mon 12/296:00 amMSO - ONT
1 stop19h 14mAlaska Airlines
Deal found 11/8$428

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 November 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$260
(Alaska Airlines)

One-way from

$130
(Alaska Airlines)

Popular in

February

Cheapest in

January

Average price

$469
Provider with most accurate pricing for Ontario-Missoula Johnson-Bell Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Missoula Johnson-Bell Field flights.
Search Deals
From Ontario to Missoula Johnson-Bell Field
Search Deals
One-way flight from Ontario to Missoula Johnson-Bell Field
Search Deals
High demand for flights, 5% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 10, 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

Sat 12/6

6:00 am-3:32 pm

1 stop8h 32m

Missoula Johnson-Bell Field

Tue 12/9

6:29 am-6:33 pm

1 stop13h 04m

$264

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Fri 12/12

7:33 pm-12:32 pm

1 stop15h 59m

Missoula Johnson-Bell Field

Sun 12/14

6:29 am-11:19 am

1 stop5h 50m

$323

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Fri 12/12

4:49 pm-12:36 am

1 stop6h 47m

Missoula Johnson-Bell Field

Sun 12/14

6:16 pm-11:58 pm

1 stop6h 42m

$329

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Fri 12/19

6:00 am-11:42 pm

1 stop16h 42m

Missoula Johnson-Bell Field

Wed 12/24

6:00 am-12:14 am

1 stop19h 14m

$397

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Mon 12/22

7:19 pm-11:42 pm

1 stop27h 23m

Missoula Johnson-Bell Field

Fri 12/26

6:00 am-12:14 am

1 stop19h 14m

$427

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Fri 12/12

7:33 pm-3:32 pm

1 stop18h 59m

Missoula Johnson-Bell Field

Mon 12/29

6:00 am-12:14 am

1 stop19h 14m

$428

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Sun 12/14

7:10 am-12:26 am

2 stops16h 16m

Missoula Johnson-Bell Field

Sat 12/20

6:00 am-11:59 pm

2 stops42h 59m

$450

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 11/20

6:00 am-12:19 pm

1 stop5h 19m

Missoula Johnson-Bell Field

Thu 11/20

4:12 pm-8:53 pm

1 stop5h 41m

$555

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Sun 11/23

6:00 am-12:33 pm

1 stop5h 33m

Missoula Johnson-Bell Field

Thu 11/27

1:13 pm-6:04 pm

1 stop5h 51m

$561

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 12/11

6:00 am-12:32 pm

1 stop5h 32m

$130

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/8

Showing 1-10 of 17 results
1
2

Compare providers for flights from Ontario to Missoula

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Missoula in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Missoula flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Missoula flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Missoula flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Missoula flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Missoula flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, May is the cheapest month in which you can book a flight from Ontario to Missoula (average of $90). Flying from Ontario to Missoula in November is currently the most expensive (average of $311). 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 November 10, 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 54% 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 November 10, 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
11,259 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

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
11,259 reviews
Alaska Airlines
8.0
Very good
11,259 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

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
7.9
Good
8,004 reviews
Alaska Airlines
8.0
Very good
11,259 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

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?

    Alaska Airlines and Delta can get you from Ontario to Missoula in just under 6h 47m. Your travel time can differ by up to 1h 45m. 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 $236, 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 45% 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, May is the cheapest month in which you can book a flight from Ontario to Missoula (average of $90). Flying from Ontario to Missoula in November is currently the most expensive (average of $311). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Missoula

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Bozeman flights
San Francisco to Bozeman flights
San Francisco to Kalispell flights
Ontario to Bozeman flights
Sacramento to Missoula flights
Los Angeles to Kalispell flights
San Diego to Bozeman flights
Santa Ana to Bozeman flights
San Jose to Kalispell flights
Los Angeles to Missoula flights
Sacramento to Bozeman flights
Oakland to Kalispell flights
Las Vegas to Kalispell flights
Ontario to Kalispell flights
Oakland to Bozeman flights
Los Angeles to Helena flights
San Diego to Kalispell flights
San Jose to Bozeman flights
Las Vegas to Bozeman flights
San Luis Obispo to Bozeman flights
Santa Ana to Kalispell flights
San Diego to Missoula flights
San Francisco to Missoula flights
Santa Ana to Missoula flights
Burbank to Kalispell flights
Reno to Bozeman flights
Ontario to Helena flights
Burbank to Bozeman flights
Los Angeles to Billings flights
Burbank to Missoula flights
Sacramento to Billings flights
Ontario to Billings flights
San Jose to Missoula flights
Sacramento to Kalispell flights
Las Vegas to Billings flights
Medford to Kalispell flights
San Francisco to Billings flights
Fresno to Kalispell flights
Fresno to Missoula flights
Palm Springs to Billings flights
Monterey to Kalispell flights
Oakland to Billings flights
Palm Springs to Bozeman flights
San Diego to Billings flights
Santa Barbara to Kalispell flights
San Francisco to Great Falls flights
Palm Springs to Missoula flights
Santa Barbara to Bozeman flights
Long Beach to Bozeman flights

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 November 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$236Average$349FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$284Average$429FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.