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

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

What airlines fly to Missoula?

Alaska Airlines, United Airlines and Delta are the top three most popular airlines that fly to Missoula from Ontario according to our data. Alaska Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Missoula. Keep in mind that there are 5 different airlines that fly to Missoula on a routine basis, so you have a few additional options to choose from.

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

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

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

As of August 2026, there are 2 operators available to choose from for flights from Ontario Airport to Missoula Johnson-Bell Field Airport.

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

What documentation or ID do you need to fly to Missoula Johnson-Bell Field Airport?

The travel and health documents you'll need for your trip to Missoula Johnson-Bell Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Missoula Johnson-Bell Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$174 Cheap Flights from Ontario to Missoula in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Missoula

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:15 am - 9:02 pmONT Ontario-MSO Missoula Johnson-Bell Field

8h 47m1 stop Las Vegas Harry Reid Intl

9:52 pm - 8:03 amMSO Missoula Johnson-Bell Field-ONT Ontario

11h 11m1 stop Las Vegas Harry Reid Intl

$245Multiple Airlines

Thu, Aug 27 - Sun, Aug 30

11:15 am - 9:02 pmONT Ontario-MSO Missoula Johnson-Bell Field

8h 47m1 stop Las Vegas Harry Reid Intl

9:52 pm - 8:36 amMSO Missoula Johnson-Bell Field-ONT Ontario

35h 44m2 stops Las Vegas Harry Reid Intl Dallas/Fort Worth

$369Multiple Airlines

Thu, Aug 27 - Sun, Aug 30

12:12 pm - 11:01 pmONT Ontario-MSO Missoula Johnson-Bell Field

9h 49m1 stop Seattle/Tacoma Intl

3:49 pm - 11:42 pmMSO Missoula Johnson-Bell Field-ONT Ontario

8h 53m1 stop Seattle/Tacoma Intl

$429Alaska Airlines

Thu, Oct 1 - Mon, Oct 5

7:30 am - 1:36 pmONT Ontario-MSO Missoula Johnson-Bell Field

5h 06m1 stop Portland

1:15 pm - 5:15 pmMSO Missoula Johnson-Bell Field-ONT Ontario

5h 00m1 stop Portland

$429Alaska Airlines

Wed, Jan 6 - Thu, Jan 7

5:05 pm - 12:31 amONT Ontario-MSO Missoula Johnson-Bell Field

6h 26m1 stop Salt Lake City

6:10 pm - 11:48 pmMSO Missoula Johnson-Bell Field-ONT Ontario

6h 38m1 stop Salt Lake City

$429Delta

Thu, Dec 24 - Mon, Dec 28

6:00 am - 12:37 pmONT Ontario-MSO Missoula Johnson-Bell Field

5h 37m1 stop Salt Lake City

6:25 pm - 11:55 pmMSO Missoula Johnson-Bell Field-ONT Ontario

6h 30m1 stop Salt Lake City

$429Delta

Tue, Sep 15 - Tue, Oct 20

9:52 am - 5:37 pmONT Ontario-MSO Missoula Johnson-Bell Field

6h 45m1 stop Salt Lake City

5:30 am - 8:55 amMSO Missoula Johnson-Bell Field-ONT Ontario

4h 25m1 stop Salt Lake City

$429Delta

Tue, Sep 15 - Tue, Oct 20

3:14 pm - 11:01 pmONT Ontario-MSO Missoula Johnson-Bell Field

6h 47m1 stop Seattle/Tacoma Intl

7:00 am - 2:16 pmMSO Missoula Johnson-Bell Field-ONT Ontario

8h 16m1 stop Seattle/Tacoma Intl

$429Alaska Airlines

Thu, Sep 17 - Wed, Sep 23

5:00 am - 1:38 pmONT Ontario-MSO Missoula Johnson-Bell Field

7h 38m1 stop Denver Intl

4:15 pm - 8:01 pmMSO Missoula Johnson-Bell Field-ONT Ontario

4h 46m1 stop San Francisco

$537United Airlines

Mon, Sep 7 - Wed, Sep 9

5:00 am - 1:38 pmONT Ontario-MSO Missoula Johnson-Bell Field

7h 38m1 stop Denver Intl

4:11 pm - 8:01 pmMSO Missoula Johnson-Bell Field-ONT Ontario

4h 50m1 stop San Francisco

$599United Airlines

Fri, Aug 21 - Wed, Aug 26

Cheap last minute flights

Enter your travel dates to find the best prices.

5:05 pm - 12:18 amONT Ontario-MSO Missoula Johnson-Bell Field

6h 13m1 stop Salt Lake City

6:27 pm - 11:34 pmMSO Missoula Johnson-Bell Field-ONT Ontario

6h 07m1 stop Salt Lake City

$509Delta

Mon, Aug 10 - Tue, Aug 18

5:05 pm - 12:18 amONT Ontario-MSO Missoula Johnson-Bell Field

6h 13m1 stop Salt Lake City

6:27 pm - 11:34 pmMSO Missoula Johnson-Bell Field-ONT Ontario

6h 07m1 stop Salt Lake City

$509Delta

Tue, Aug 11 - Tue, Aug 18

2:05 pm - 10:55 pmONT Ontario-MSO Missoula Johnson-Bell Field

7h 50m1 stop Seattle/Tacoma Intl

5:00 pm - 11:11 pmMSO Missoula Johnson-Bell Field-ONT Ontario

7h 11m1 stop Seattle/Tacoma Intl

$509Alaska Airlines

Wed, Aug 12 - Mon, Aug 17

12:04 pm - 7:19 pmONT Ontario-MSO Missoula Johnson-Bell Field

6h 15m1 stop Seattle/Tacoma Intl

5:00 pm - 11:11 pmMSO Missoula Johnson-Bell Field-ONT Ontario

7h 11m1 stop Seattle/Tacoma Intl

$509Alaska Airlines

Mon, Aug 10 - Mon, Aug 17

12:04 pm - 7:19 pmONT Ontario-MSO Missoula Johnson-Bell Field

6h 15m1 stop Seattle/Tacoma Intl

5:41 pm - 11:53 pmMSO Missoula Johnson-Bell Field-ONT Ontario

7h 12m1 stop Portland

$509Alaska Airlines

Wed, Aug 12 - Tue, Aug 18

2:05 pm - 10:55 pmONT Ontario-MSO Missoula Johnson-Bell Field

7h 50m1 stop Seattle/Tacoma Intl

5:00 pm - 11:11 pmMSO Missoula Johnson-Bell Field-ONT Ontario

7h 11m1 stop Seattle/Tacoma Intl

$519Alaska Airlines

Wed, Aug 12 - Sat, Aug 15

5:00 am - 1:19 pmONT Ontario-MSO Missoula Johnson-Bell Field

7h 19m1 stop Denver Intl

6:15 am - 12:50 pmMSO Missoula Johnson-Bell Field-ONT Ontario

7h 35m1 stop Denver Intl

$589United Airlines

Mon, Aug 10 - Wed, Aug 19

1:18 pm - 9:31 pmONT Ontario-MSO Missoula Johnson-Bell Field

7h 13m1 stop Denver Intl

4:11 pm - 8:01 pmMSO Missoula Johnson-Bell Field-ONT Ontario

4h 50m1 stop San Francisco

$589United Airlines

Tue, Aug 11 - Wed, Aug 19

5:00 am - 1:38 pmONT Ontario-MSO Missoula Johnson-Bell Field

7h 38m1 stop Denver Intl

4:11 pm - 8:01 pmMSO Missoula Johnson-Bell Field-ONT Ontario

4h 50m1 stop San Francisco

$589United Airlines

Wed, Aug 12 - Wed, Aug 19

6:00 am - 12:36 pmONT Ontario-MSO Missoula Johnson-Bell Field

5h 36m1 stop Salt Lake City

5:30 am - 8:52 amMSO Missoula Johnson-Bell Field-ONT Ontario

4h 22m1 stop Salt Lake City

$634Delta

Sun, Aug 9 - Mon, Aug 10

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

United Airlines flights from Ontario to Missoula

Our best United Airlines deals on Ontario to Missoula flight tickets

United Airlines

Sep 7

ONT5:00 amOntario

7h 38m

1 stop

MSO1:38 pmMissoula Johnson-Bell Field

Sep 9

MSO4:15 pmMissoula Johnson-Bell Field

4h 46m

1 stop

ONT8:01 pmOntario

$537

United Airlines

Aug 11

ONT1:18 pmOntario

7h 13m

1 stop

MSO9:31 pmMissoula Johnson-Bell Field

Aug 19

MSO4:11 pmMissoula Johnson-Bell Field

4h 50m

1 stop

ONT8:01 pmOntario

$589

United Airlines

Aug 21

ONT5:00 amOntario

7h 38m

1 stop

MSO1:38 pmMissoula Johnson-Bell Field

Aug 25

MSO2:40 pmMissoula Johnson-Bell Field

7h 13m

1 stop

ONT8:53 pmOntario

$599

Alaska Airlines flights from Ontario to Missoula

Our best Alaska Airlines deals on Ontario to Missoula flight tickets

Alaska Airlines

Jan 6

ONT7:30 amOntario

5h 06m

1 stop

MSO1:36 pmMissoula Johnson-Bell Field

Jan 7

MSO1:15 pmMissoula Johnson-Bell Field

5h 00m

1 stop

ONT5:15 pmOntario

$429

Alaska Airlines

Sep 8

ONT3:14 pmOntario

6h 47m

1 stop

MSO11:01 pmMissoula Johnson-Bell Field

Sep 11

MSO4:16 pmMissoula Johnson-Bell Field

8h 08m

1 stop

ONT11:24 pmOntario

$439

Alaska Airlines

Sep 17

ONT3:14 pmOntario

6h 47m

1 stop

MSO11:01 pmMissoula Johnson-Bell Field

Sep 23

MSO7:00 amMissoula Johnson-Bell Field

10h 10m

2 stops

ONT4:10 pmOntario

$451

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Thu 8/27

11:15 am-9:02 pm

1 stop8h 47m

Missoula Johnson-Bell Field

Sun 8/30

9:52 pm-8:03 am

1 stop11h 11m

$245

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Thu 8/27

11:15 am-9:02 pm

1 stop8h 47m

Missoula Johnson-Bell Field

Sun 8/30

9:52 pm-8:36 am

2 stops35h 44m

$369

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Thu 10/1

12:12 pm-11:01 pm

1 stop9h 49m

Missoula Johnson-Bell Field

Mon 10/5

3:49 pm-11:42 pm

1 stop8h 53m

$429

Quickest round-trip

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Wed 1/6

7:30 am-1:36 pm

1 stop5h 06m

Missoula Johnson-Bell Field

Thu 1/7

1:15 pm-5:15 pm

1 stop5h 00m

$429

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Thu 12/24

5:05 pm-12:31 am

1 stop6h 26m

Missoula Johnson-Bell Field

Mon 12/28

6:10 pm-11:48 pm

1 stop6h 38m

$429

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Tue 9/15

6:00 am-12:37 pm

1 stop5h 37m

Missoula Johnson-Bell Field

Tue 10/20

6:25 pm-11:55 pm

1 stop6h 30m

$429

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Tue 9/15

9:52 am-5:37 pm

1 stop6h 45m

Missoula Johnson-Bell Field

Tue 10/20

5:30 am-8:55 am

1 stop4h 25m

$429

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Thu 9/17

3:14 pm-11:01 pm

1 stop6h 47m

Missoula Johnson-Bell Field

Wed 9/23

7:00 am-2:16 pm

1 stop8h 16m

$429

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Mon 9/7

5:00 am-1:38 pm

1 stop7h 38m

Missoula Johnson-Bell Field

Wed 9/9

4:15 pm-8:01 pm

1 stop4h 46m

$537

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Fri 8/21

5:00 am-1:38 pm

1 stop7h 38m

Missoula Johnson-Bell Field

Wed 8/26

4:11 pm-8:01 pm

1 stop4h 50m

$599

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 Ontario to Missoula

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 Missoula?

The month of October is, on average, the cheapest month to fly to Missoula from Ontario, with most prices found around $260. If you are unable to visit Missoula during the month of October, then departing from Ontario during the month February is also very affordable. Most momondo users find prices during this month for around $294.

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

On average, the least expensive day to fly to Missoula from Ontario is on a Sunday. momondo users have found tickets for Sunday departures for as low as $329. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Ontario because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $453.

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

The cheapest time of day to fly to Missoula is in the afternoon when flights can be purchased for as low as $289. Flights in the morning are often more expensive with an average ticket price of $398.

How have Ontario to Missoula flight prices changed over time?

As of August 2026, prices for Ontario to Missoula flights are approximately 10% cheaper when compared to flights at the same time last year.

When to book flights from Ontario to Missoula

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

Estimated round-trip price

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

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

Fastest flight time	5h 23m
Direct flights	None

The fastest flight from Ontario to Missoula takes 5h 23m

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

Search flight deals

Frequently asked questions about flying from Ontario to Missoula

How far is Ontario to Missoula Johnson-Bell Field by plane?
There are 904.7 mi between Ontario and Missoula Johnson-Bell Field. 5h 23m is a normal flight duration for this route.
When did momondo last update prices for flights from Ontario Airport to Missoula Johnson-Bell Field Airport?
Prices for flights from Ontario Airport to Missoula Johnson-Bell Field Airport are updated daily.
How many operators does momondo search for flights from Ontario Airport to Missoula Johnson-Bell Field Airport?
As of August 2026, there are 2 operators available to choose from for flights from Ontario Airport to Missoula Johnson-Bell Field Airport.
How old do you have to be to fly from Ontario Airport to Missoula Johnson-Bell Field 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 Ontario Airport to Missoula Johnson-Bell Field Airport.
What documentation or ID do you need to fly to Missoula Johnson-Bell Field Airport?
The travel and health documents you'll need for your trip to Missoula Johnson-Bell Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Missoula Johnson-Bell Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ontario to Missoula?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ontario to Missoula is Alaska Airlines (69% of total bookings). The next most popular airline is Delta (31%).

Best airlines flying from Ontario to Missoula

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

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $182	Free Cancellation	Rating 7.9 12,781 reviews		Search Alaska Airlines flights
Delta	PriceFrom $260	Free Cancellation	Rating 7.8 8,502 reviews		Search Delta flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Missoula. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Ontario to Missoula flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Missoula.

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

If you are not ready to book a flight from Ontario to Missoula now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Missoula and let you know when they change.