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Missoula

$120+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MSO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$240
(Alaska Airlines)

One-way from

$120
(Hawaiian Airlines)

Popular in

February

Cheapest in

January

Average price

$554
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 ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 7/76:00 amONT - MSO
1 stop5h 35mAlaska Airlines
Thu 7/105:45 amMSO - ONT
1 stop4h 38mAlaska Airlines
Deal found 6/10$240
This Delta deal was found by Cheapflights users on 6/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/105:09 pmONT - MSO
1 stop6h 15mDelta
Mon 7/145:30 amMSO - ONT
1 stop4h 17mDelta
Deal found 6/9$241
This Hawaiian Airlines deal was found by Cheapflights users on 6/11. 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 7/76:00 amONT - MSO
1 stop5h 35mHawaiian Airlines
Fri 7/116:36 pmMSO - ONT
1 stop6h 37mHawaiian Airlines
Deal found 6/11$284
This Booking.com deal was found by Cheapflights users on 6/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/612:59 amONT - MSO
1 stop9h 55mFrontier
Fri 7/1112:40 pmMSO - ONT
1 stop21h 29mFrontier
Deal found 6/12$331
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Sun 7/131:34 pmONT - MSO
1 stop6h 49mUnited Airlines
Sun 7/206:15 amMSO - ONT
1 stop7h 17mUnited Airlines
Deal found 6/12$381
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1710:54 amONT - MSO
1 stop9h 49mAmerican Airlines
Thu 6/191:54 pmMSO - ONT
2 stops8h 44mAmerican Airlines
Deal found 6/10$406
This United deal was found by Cheapflights users on 6/12. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:00 amONT - MSO
1 stop7h 05mMultiple Airlines
Sat 12/136:30 pmMSO - ONT
1 stop5h 07mMultiple Airlines
Deal found 6/12$560

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 June 12, 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 7/7

6:00 am-12:35 pm

1 stop5h 35m

Missoula Johnson-Bell Field

Thu 7/10

5:45 am-9:23 am

1 stop4h 38m

$240

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 7/10

5:09 pm-12:24 am

1 stop6h 15m

Missoula Johnson-Bell Field

Mon 7/14

5:30 am-8:47 am

1 stop4h 17m

$241

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Mon 7/7

6:00 am-12:35 pm

1 stop5h 35m

Missoula Johnson-Bell Field

Fri 7/11

6:36 pm-12:13 am

1 stop6h 37m

$284

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Sun 7/6

12:59 am-11:54 am

1 stop9h 55m

Missoula Johnson-Bell Field

Fri 7/11

12:40 pm-9:09 am

1 stop21h 29m

$331

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Sun 7/13

1:34 pm-9:23 pm

1 stop6h 49m

Missoula Johnson-Bell Field

Sun 7/20

6:15 am-12:32 pm

1 stop7h 17m

$381

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Mon 7/7

12:59 am-9:48 pm

1 stop19h 49m

Missoula Johnson-Bell Field

Tue 7/15

7:03 am-6:08 pm

2 stops12h 05m

$648

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 7/10

4:00 pm-12:19 am

1 stop7h 19m

$120

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Sat 8/23

6:00 am-3:18 pm

1 stop8h 18m

$134

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Wed 7/16

5:09 pm-12:24 am

1 stop6h 15m

$146

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Sun 6/29

12:59 am-11:55 am

1 stop9h 56m

$207

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 13 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 $506). 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 June 12, 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.

Rainfall in Missoula by month

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

In terms of precipitation, rainfall in Missoula ranges from 0.7 - 2.1 inches per month. June is typically the wettest month, when rainfall can reach 2.1 in. February is typically the driest time to visit Missoula when rainfall is around 0.7 in.

Temperature in Missoula by month

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

If weather is an important factor for your trip to Missoula, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 24.8 F).

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 June 12, 2025.
See what other customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Ontario to Missoula have to say. 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

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    Alaska Airlines, at $240, was found to be the cheapest airline from Ontario to Missoula.Alternate airlines to your destination round-trip include Delta and Hawaiian Airlines. Alaska Airlines is priced at 43% lower than the current average price of a flight leaving 3 months from now.

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

    For one-way options, check prices for Hawaiian Airlines. According to our data, you can fly for as low as $120. Users have also found prices from $134 and $146 on Alaska Airlines and Delta, respectively.

  • 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 $506). 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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Alternative routes for Ontario to Missoula

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Top 3 airlines flying from Ontario to Missoula

Discover the top 3 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$181Average$276FlexibilityNo cancel feeOn-time62%
DeltaCheapest$198Average$354FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$273Average$434FlexibilityNo cancel feeOn-time75%

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