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

Delta, at $275, was found to be the cheapest airline from Ontario to Missoula.Alternate airlines to your destination round-trip include Alaska Airlines and Hawaiian Airlines. Delta is priced at 34% 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 $132. Users have also found prices from $191 and $204 on Delta and Alaska Airlines, respectively.

What is the cheapest day to fly from Ontario to Missoula?

Travelers seeking maximum savings on their Ontario to Missoula flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Ontario to Missoula?

Consider Alaska Airlines, Delta or Frontier when booking your flight. These represent the most popular airlines when flying from Ontario to Missoula.

What is the cheapest day to fly round-trip from Ontario to Missoula?

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Missoula. Check prices with Cheapflights to find a great deal for your trip.

How far in advance should I book a flight from Ontario to Missoula?

To save up to 131% on this flight, we recommend booking at least 50 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Ontario to Missoula from $536 1-2 weeks out and tickets from $665 for flights departing within the next 72 hours.

What is the cheapest month to fly from Ontario to Missoula?

Due to multiple factors, expect to potentially pay more when booking in January. For low rates, September can be a great choice for travel to Missoula. Flights to Missoula from Ontario in September are about $460 on average during September, but can be found for as low as $164.

Most accurate provider : When it comes to deals on Ontario-Missoula flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Missoula flight deals on Cheapflights vs. FlightHub >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 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 Ontario-Missoula flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

$132+ Flights from Ontario to Missoula

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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.

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Cheap flight deals from Ontario to Missoula

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$275 (Delta)
One-way from	$132 (Hawaiian Airlines)
Popular in	February
Cheapest in	May
Average price	$514

Provider with most accurate pricing for Ontario-Missoula Johnson-Bell Field flight deals.

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Provider most trusted by Cheapflights users for Ontario-Missoula Johnson-Bell Field flights.

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From Ontario to Missoula Johnson-Bell Field

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One-way flight from Ontario to Missoula Johnson-Bell Field

Search Deals

Highest demand for flights based on searches. 18% potential increase in price ($92 potential increase over avg. RT price).

Search Deals

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 March 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 March 25, 2025.

Tue 5/65:15 pmONT - MSO

1 stop6h 18mDelta

Sun 5/115:40 amMSO - ONT

1 stop4h 31mDelta

Deal found 3/24

$275

Thu 4/176:00 amONT - MSO

1 stop6h 39mAlaska Airlines

Sun 4/204:11 pmMSO - ONT

1 stop8h 48mAlaska Airlines

Deal found 3/24

$285

Sat 4/511:33 amONT - MSO

1 stop5h 24mHawaiian Airlines

Tue 4/222:54 pmMSO - ONT

1 stop6h 35mHawaiian Airlines

Deal found 3/23

$387

Sun 7/1312:59 amONT - MSO

1 stop9h 55mFrontier

Fri 7/1812:40 pmMSO - ONT

1 stop12h 10mFrontier

Deal found 3/24

$450

Sun 4/135:00 amONT - MSO

1 stop7h 31mUnited Airlines

Sat 4/196:25 amMSO - ONT

2 stops14h 56mUnited Airlines

Deal found 3/24

$509

Thu 6/126:23 amONT - MSO

2 stops14h 20mAmerican Airlines

Thu 6/197:03 amMSO - ONT

2 stops12h 09mAmerican Airlines

Deal found 3/24

$586

Thu 7/35:05 amONT - MSO

1 stop7h 18mMultiple Airlines

Sun 7/65:45 amMSO - ONT

1 stop4h 38mMultiple Airlines

Deal found 3/24

$720

Best flights from Ontario to Missoula
Discover carefully curated flight deals from Ontario to Missoula that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Tue 5/65:15 pmONT - MSO

1 stop6h 18mDelta

Sun 5/115:40 amMSO - ONT

1 stop4h 31mDelta

Deal found 3/24

$275

Thu 4/176:00 amONT - MSO

1 stop6h 39mAlaska Airlines

Sun 4/204:11 pmMSO - ONT

1 stop8h 48mAlaska Airlines

Deal found 3/24

$285

Sat 4/511:33 amONT - MSO

1 stop5h 24mHawaiian Airlines

Tue 4/222:54 pmMSO - ONT

1 stop6h 35mHawaiian Airlines

Deal found 3/23

$387

Sun 4/135:00 amONT - MSO

1 stop7h 31mUnited Airlines

Sat 4/196:25 amMSO - ONT

2 stops14h 56mUnited Airlines

Deal found 3/24

$509

Thu 6/126:23 amONT - MSO

2 stops14h 20mAmerican Airlines

Thu 6/197:03 amMSO - ONT

2 stops12h 09mAmerican Airlines

Deal found 3/24

$586

Last-minute flights from Ontario to Missoula
Discover last-minute flight deals from Ontario to Missoula. Data last updated March 25, 2025 and is based on user searches.

Sat 3/296:00 amONT - MSO

1 stop6h 39mAlaska Airlines

Sat 4/196:38 pmMSO - ONT

2 stops15h 50mAlaska Airlines

Deal found 3/24

$537

Thu 4/37:00 amONT - MSO

1 stop7h 31mHawaiian Airlines

Sun 4/66:38 pmMSO - ONT

1 stop6h 21mHawaiian Airlines

Deal found 3/24

$480

Thu 4/36:00 amONT - MSO

2 stops14h 35mUnited Airlines

Sun 4/62:33 pmMSO - ONT

1 stop7h 09mUnited Airlines

Deal found 3/24

$573

Sat 4/511:33 amONT - MSO

1 stop5h 24mHawaiian Airlines

Tue 4/222:54 pmMSO - ONT

1 stop6h 35mHawaiian Airlines

Deal found 3/23

$387

Sun 4/135:00 amONT - MSO

1 stop7h 31mUnited Airlines

Sat 4/196:25 amMSO - ONT

2 stops14h 56mUnited Airlines

Deal found 3/24

$509

Thu 4/176:00 amONT - MSO

1 stop6h 39mAlaska Airlines

Sun 4/204:11 pmMSO - ONT

1 stop8h 48mAlaska Airlines

Deal found 3/24

$285

One-way flights from Ontario to Missoula
Search for one-way flight options from Ontario to Missoula. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Wed 5/147:00 amONT - MSO

1 stop4h 51mHawaiian Airlines

Deal found 3/23

$132

Thu 5/12:35 pmONT - MSO

2 stops8h 58mDelta

Deal found 3/24

$191

Thu 5/224:45 pmONT - MSO

1 stop5h 51mAlaska Airlines

Deal found 3/23

$204

Wed 5/146:08 amONT - MSO

3 stops14h 11mUnited Airlines

Deal found 3/23

$1,113

Cheapflights Fare Finder

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

Tue 5/6

5:15 pm-12:33 am

1 stop6h 18m

Missoula Johnson-Bell Field

Sun 5/11

5:40 am-9:11 am

1 stop4h 31m

$275

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 4/17

6:00 am-1:39 pm

1 stop6h 39m

Missoula Johnson-Bell Field

Sun 4/20

4:11 pm-11:59 pm

1 stop8h 48m

$285

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Sat 4/5

11:33 am-5:57 pm

1 stop5h 24m

Missoula Johnson-Bell Field

Tue 4/22

2:54 pm-8:29 pm

1 stop6h 35m

$387

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Sun 4/13

5:00 am-1:31 pm

1 stop7h 31m

Missoula Johnson-Bell Field

Sat 4/19

6:25 am-8:21 pm

2 stops14h 56m

$509

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 6/12

6:23 am-9:43 pm

2 stops14h 20m

Missoula Johnson-Bell Field

Thu 6/19

7:03 am-6:12 pm

2 stops12h 09m

$586

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Wed 5/14

7:00 am-12:51 pm

1 stop4h 51m

$132

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 5/1

2:35 pm-12:33 am

2 stops8h 58m

$191

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 5/22

4:45 pm-11:36 pm

1 stop5h 51m

$204

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Wed 5/14

6:08 am-9:19 pm

3 stops14h 11m

$1,113

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Compare providers for flights from Ontario to Missoula

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Missoula in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Missoula flight deals on Cheapflights vs. FlightHub >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 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 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, 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 June is currently the most expensive (average of $517). 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?

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

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

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

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

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,782 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

7,890 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Hawaiian Airlines

7.9

Good

2,330 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,605 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,782 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

What are the cheapest airlines flying from Ontario to Missoula round-trip?
Delta, at $275, was found to be the cheapest airline from Ontario to Missoula.Alternate airlines to your destination round-trip include Alaska Airlines and Hawaiian Airlines. Delta is priced at 34% 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 $132. Users have also found prices from $191 and $204 on Delta and Alaska Airlines, 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 June is currently the most expensive (average of $517). 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

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Other flights to Missoula

Top 4 airlines flying from Ontario to Missoula

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$168	Average$254	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$236	Average$342	FlexibilityNo cancel fee	On-timeN/A
Alaska Airlines	Cheapest$298	Average$467	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$473	Average$652	FlexibilityNo cancel fee	On-time69%

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$132+ 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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Missoula with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Missoula

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Missoula

Cheapest flights from Ontario to MissoulaExplore 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 March 25, 2025.

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 March 25, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Missoula that are best for you.

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 March.

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.

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?

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 March 25, 2025.

Rainfall in Missoula by month

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

Temperature in Missoula by month

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

Reviews of airlines servicing Missoula

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.

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?

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

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

How can I find direct flights from Ontario to Missoula?

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

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

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.

Top 4 airlines flying from Ontario to Missoula

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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 March 25, 2025.