What is the cheapest airline that flies from Missoula Johnson-Bell Field to Ontario?

Alaska Airlines, United Airlines, and American Airlines are the most popular carriers operating from Missoula Johnson-Bell Field to Ontario

What airlines fly to Ontario?

Delta, Alaska Airlines and United Airlines are the top three most popular airlines that fly to Ontario from Missoula according to our data. Delta is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 5 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Missoula Johnson-Bell Field Airport to Ontario Airport?

Prices for flights from Missoula Johnson-Bell Field Airport to Ontario Airport are updated daily.

How many operators does momondo search for flights from Missoula Johnson-Bell Field Airport to Ontario Airport?

As of December 2025, there are 2 operators available to choose from for flights from Missoula Johnson-Bell Field Airport to Ontario Airport.

How old do you have to be to fly from Missoula Johnson-Bell Field Airport to Ontario Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missoula Johnson-Bell Field Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$130 Cheap Flights from Missoula to Ontario in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Missoula to Los Angeles

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:23 am - 11:32 pm

MSO

ONT

18h 09m1 stop

7:00 am - 12:59 pm

ONT

MSO

4h 59m1 stop

$243Alaska Airlines

Sat, Feb 28 - Sat, Mar 7

4:20 pm - 8:36 pm

MSO

ONT

5h 16m1 stop

6:00 am - 12:23 pm

ONT

MSO

5h 23m1 stop

$248Alaska Airlines

Wed, Jan 21 - Mon, Jan 26

1:03 pm - 8:10 pm

MSO

ONT

8h 07m1 stop

6:00 am - 12:23 pm

ONT

MSO

5h 23m1 stop

$273Alaska Airlines

Sat, Jan 10 - Sun, Jan 18

6:23 am - 5:03 pm

MSO

ONT

11h 40m2 stops

4:03 pm - 11:55 pm

ONT

MSO

6h 52m1 stop

$277Alaska Airlines

Wed, Jan 21 - Mon, Jan 26

6:23 am - 5:03 pm

MSO

ONT

11h 40m2 stops

7:00 am - 1:23 pm

ONT

MSO

5h 23m1 stop

$287Alaska Airlines

Sat, Jan 31 - Mon, Feb 2

6:23 am - 10:59 am

MSO

ONT

5h 36m1 stop

6:00 am - 12:23 pm

ONT

MSO

5h 23m1 stop

$289Alaska Airlines

Mon, Jan 26 - Thu, Jan 29

6:23 am - 10:59 am

MSO

ONT

5h 36m1 stop

6:00 am - 12:23 pm

ONT

MSO

5h 23m1 stop

$294Alaska Airlines

Sun, Jan 18 - Thu, Jan 22

4:20 pm - 1:06 pm

MSO

ONT

21h 46m2 stops

7:00 am - 1:23 pm

ONT

MSO

5h 23m1 stop

$297Alaska Airlines

Mon, Jan 26 - Thu, Jan 29

2:34 pm - 8:50 pm

MSO

ONT

7h 16m1 stop

1:50 pm - 9:57 pm

ONT

MSO

7h 07m1 stop

$307United Airlines

Sat, Feb 28 - Sat, Mar 7

6:23 am - 8:10 pm

MSO

ONT

14h 47m2 stops

6:00 am - 12:23 pm

ONT

MSO

5h 23m1 stop

$311Alaska Airlines

Sat, Jan 10 - Sun, Jan 18

Alaska Airlines flights from Missoula to Ontario

Our best Alaska Airlines deals on Missoula to Ontario flight tickets

Alaska Airlines

Feb 28

MSO6:23 amMissoula Johnson-Bell Field

18h 09m

1 stop

ONT11:32 pmOntario

Mar 7

ONT7:00 amOntario

4h 59m

1 stop

MSO12:59 pmMissoula Johnson-Bell Field

$243

Find similar

Alaska Airlines

Jan 21

MSO4:20 pmMissoula Johnson-Bell Field

5h 16m

1 stop

ONT8:36 pmOntario

Jan 26

ONT6:00 amOntario

5h 23m

1 stop

MSO12:23 pmMissoula Johnson-Bell Field

$248

Find similar

Alaska Airlines

Jan 10

MSO1:03 pmMissoula Johnson-Bell Field

8h 07m

1 stop

ONT8:10 pmOntario

Jan 18

ONT6:00 amOntario

5h 23m

1 stop

MSO12:23 pmMissoula Johnson-Bell Field

$273

Find similar

Delta flights from Missoula to Ontario

Our best Delta deals on Missoula to Ontario flight tickets

Delta

Dec 29

MSO6:15 pmMissoula Johnson-Bell Field

6h 39m

1 stop

ONT11:54 pmOntario

Jan 3

ONT5:10 pmOntario

5h 56m

1 stop

MSO12:06 amMissoula Johnson-Bell Field

$577

Find similar

Delta

Dec 29

MSO6:15 pmMissoula Johnson-Bell Field

6h 39m

1 stop

ONT11:54 pmOntario

Jan 2

ONT6:00 amOntario

4h 54m

1 stop

MSO11:54 amMissoula Johnson-Bell Field

$646

Find similar

Delta

Dec 20

MSO6:15 pmMissoula Johnson-Bell Field

5h 13m

1 stop

ONT10:28 pmOntario

Dec 21

ONT5:10 pmOntario

6h 23m

1 stop

MSO12:33 amMissoula Johnson-Bell Field

$651

Find similar

Fly from

Fly to

Route

Depart

Return

Price

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Sat 2/28

6:23 am-11:32 pm

1 stop18h 09m

Ontario

Sat 3/7

7:00 am-12:59 pm

1 stop4h 59m

$243

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Wed 1/21

4:20 pm-8:36 pm

1 stop5h 16m

Ontario

Mon 1/26

6:00 am-12:23 pm

1 stop5h 23m

$248

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Sat 1/10

1:03 pm-8:10 pm

1 stop8h 07m

Ontario

Sun 1/18

6:00 am-12:23 pm

1 stop5h 23m

$273

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Wed 1/21

6:23 am-5:03 pm

2 stops11h 40m

Ontario

Mon 1/26

4:03 pm-11:55 pm

1 stop6h 52m

$277

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Sat 1/31

6:23 am-5:03 pm

2 stops11h 40m

Ontario

Mon 2/2

7:00 am-1:23 pm

1 stop5h 23m

$287

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Mon 1/26

6:23 am-10:59 am

1 stop5h 36m

Ontario

Thu 1/29

6:00 am-12:23 pm

1 stop5h 23m

$289

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Sun 1/18

6:23 am-10:59 am

1 stop5h 36m

Ontario

Thu 1/22

6:00 am-12:23 pm

1 stop5h 23m

$294

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Mon 1/26

4:20 pm-1:06 pm

2 stops21h 46m

Ontario

Thu 1/29

7:00 am-1:23 pm

1 stop5h 23m

$297

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Sat 2/28

2:34 pm-8:50 pm

1 stop7h 16m

Ontario

Sat 3/7

1:50 pm-9:57 pm

1 stop7h 07m

$307

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Sat 1/10

6:23 am-8:10 pm

2 stops14h 47m

Ontario

Sun 1/18

6:00 am-12:23 pm

1 stop5h 23m

$311

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Missoula to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Ontario?

In general, January is the cheapest month to fly from Missoula to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $236. If you aren’t able to travel during the month of January, then book flights to Ontario from Missoula during February instead. Flights to Ontario in February, while not as cheap as those in January, still average around $267.

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Thursday when prices can be found for as low as $355. This is often the case because there is less demand to fly during this day of the week. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Missoula to Ontario for around $639.

What is the cheapest time of day to depart on your flight to Ontario?

In the afternoon is the cheapest time of day to fly from Missoula to Ontario when you can find flight prices for as low as $365. Flying to Ontario in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $530 on average. Flights to Ontario from Missoula in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Missoula to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Missoula to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Missoula to Ontario (MSO to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missoula to Ontario

Fastest flight time	4h 21m
Direct flights	None

The fastest flight from Missoula to Ontario takes 4h 21m

There are no direct flights from Missoula to Ontario. There are no popular flight routes from Missoula to Ontario.

Search flight deals

How far is Missoula Johnson-Bell Field to Ontario by plane?
There are 904.7 mi between Missoula Johnson-Bell Field and Ontario. In terms of flight time, this usually takes a little over 4h 21m.
When did momondo last update prices for flights from Missoula Johnson-Bell Field Airport to Ontario Airport?
Prices for flights from Missoula Johnson-Bell Field Airport to Ontario Airport are updated daily.
How many operators does momondo search for flights from Missoula Johnson-Bell Field Airport to Ontario Airport?
As of December 2025, there are 2 operators available to choose from for flights from Missoula Johnson-Bell Field Airport to Ontario Airport.
How old do you have to be to fly from Missoula Johnson-Bell Field Airport to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missoula Johnson-Bell Field Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Missoula to Ontario?
momondo data reveals that the most frequently booked airline on the route from Missoula to Ontario is Delta, representing 59% of all bookings. The subsequent popular airline is Alaska Airlines at 41%.

Best airlines flying from Missoula to Ontario

Compare and see reviews for airlines that fly from Missoula to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $229	Free Cancellation	Rating 8.0 11,478 reviews		Search Alaska Airlines flights
Delta	PriceFrom $236	Free Cancellation	Rating 7.9 8,009 reviews		Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Missoula to Ontario?

It is quick and easy to find Missoula to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

Can I find flights from Missoula to Ontario with flexible booking policies on momondo?

Yes. All flights to Ontario from Missoula on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Missoula to Ontario?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Missoula.

I’m not ready to book a flight from Missoula to Ontario right now. Can momondo alert me if prices change?

Price alerts on flights to Ontario from Missoula are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.