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$129+ Cheap flights from Missoula to Ontario (MSO - ONT)

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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
MSO — ONT
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
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Cheap flight deals from Missoula to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Missoula (MSO) to Ontario (ONT). 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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$284
(Delta)

One-way from

$129
(Alaska Airlines)

Popular in

December

Cheapest in

August

Average price

$480
Provider with most accurate pricing for Missoula Johnson-Bell Field-Ontario flight deals.
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Provider most trusted by Cheapflights users for Missoula Johnson-Bell Field-Ontario flights.
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From Missoula Johnson-Bell Field to Ontario
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One-way flight from Missoula Johnson-Bell Field to Ontario
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Highest demand for flights based on searches. 22% potential increase in price ($123 potential increase over avg. RT price).
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Cheapest flight prices on average. 15% potential price decrease ($58 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Missoula to Ontario

Cheapest flights from Missoula to Ontario
Explore the most affordable flight options available from Missoula to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

This Delta deal was found by Cheapflights users on 3/24. 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 4/186:15 pmMSO - ONT
1 stop6h 26mDelta
Sun 4/205:15 pmONT - MSO
1 stop6h 18mDelta
Deal found 3/24$284
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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.
Thu 4/242:54 pmMSO - ONT
1 stop10h 05mAlaska Airlines
Fri 4/256:00 amONT - MSO
1 stop6h 58mAlaska Airlines
Deal found 3/25$345
This Hawaiian Airlines deal was found by Cheapflights users on 3/24. 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.
Mon 4/76:38 pmMSO - ONT
1 stop6h 21mHawaiian Airlines
Thu 4/1011:33 amONT - MSO
1 stop5h 24mHawaiian Airlines
Deal found 3/24$350
This flugladen.de deal was found by Cheapflights users on 3/24. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/176:35 amMSO - ONT
1 stop5h 30mMultiple Airlines
Thu 6/1912:59 amONT - MSO
1 stop9h 56mMultiple Airlines
Deal found 3/24$438
This United Airlines deal was found by Cheapflights users on 3/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/45:20 pmMSO - ONT
2 stops19h 53mUnited Airlines
Sat 9/2010:00 amONT - MSO
1 stop4h 25mUnited Airlines
Deal found 3/24$518

Cheapflights Fare Finder

Customize your flight search to find flights from Missoula to Ontario 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 March 25, 2025.
Use the filters below to find and compare flights from Missoula to Ontario that are best for you.

Fly from

Missoula

Fly to

Ontario

Route

Depart

Return

Price

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Fri 4/18

6:15 pm-11:41 pm

1 stop6h 26m

Ontario

Sun 4/20

5:15 pm-12:33 am

1 stop6h 18m

$284

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Thu 4/24

2:54 pm-11:59 pm

1 stop10h 05m

Ontario

Fri 4/25

6:00 am-1:58 pm

1 stop6h 58m

$345

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Mon 4/7

6:38 pm-11:59 pm

1 stop6h 21m

Ontario

Thu 4/10

11:33 am-5:57 pm

1 stop5h 24m

$350

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Tue 6/17

6:35 am-11:05 am

1 stop5h 30m

Ontario

Thu 6/19

12:59 am-11:55 am

1 stop9h 56m

$438

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Thu 9/4

5:20 pm-12:13 pm

2 stops19h 53m

Ontario

Sat 9/20

10:00 am-3:25 pm

1 stop4h 25m

$518

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Wed 4/23

2:54 pm-8:29 pm

1 stop6h 35m

$129

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Thu 5/22

2:23 pm-9:04 pm

1 stop7h 41m

$181

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Wed 4/2

6:42 am-10:39 am

1 stop4h 57m

$225

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Wed 4/2

1:27 pm-10:00 pm

2 stops9h 33m

$336

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Compare providers for flights from Missoula to Ontario

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 Missoula to Ontario in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust 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 Missoula-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Missoula-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Missoula-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Missoula-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub 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 Missoula-Ontario 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 Missoula to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Missoula 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 Missoula to Ontario

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

Currently, August is the cheapest month in which you can book a flight from Missoula to Ontario (average of $246). Flying from Missoula to Ontario in March is currently the most expensive (average of $324). 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 MSO to ONT?

Find hourly flight availability from Missoula to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

It’s optimal to fly from Missoula to Ontario in the afternoon. By choosing this option you can save up to 32% on the cost of your flight, compared to a flight in the morning.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated March 25, 2025.
Alaska Airlines
8.0
Very good
9,785 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Alaska Airlines
8.0
Very good
9,785 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Hawaiian Airlines
7.9
Good
2,330 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,785 reviews

Crew

8.5

Boarding

8.2

Comfort

7.9

Food

7.1

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Related info for your journey

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

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

    According to our current data, Delta ($284), Alaska Airlines ($345), and Hawaiian Airlines ($350) offers the cheapest pricing from Missoula to Ontario. Users have found that Delta is 33% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Missoula to Ontario one-way?

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $129. However, be on the lookout for offers from United Airlines and Hawaiian Airlines, as they are both options that can get you from Missoula to Ontario for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Missoula to Ontario 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 Missoula to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Missoula to Ontario (average of $246). Flying from Missoula to Ontario in March is currently the most expensive (average of $324). 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

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Top 2 airlines flying from Missoula to Ontario

Discover the top 2 airlines that operate flights from Missoula to Ontario. 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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$220Average$364FlexibilityNo cancel feeOn-time75%
DeltaCheapest$264Average$367FlexibilityNo cancel feeOn-timeN/A
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