What airlines fly to Missoula?

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to Missoula from Ontario according to our data. United Airlines is the first choice among our users, with 32% 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.

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

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

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 September 2026, there are 3 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.

$244 Cheap Flights from Ontario to Missoula in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Missoula

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One-way

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Cheap round-trip flights

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7:00 am - 3:32 pmONT Ontario-MSO Missoula Johnson-Bell Field

7h 32m1 stop Seattle/Tacoma Intl

4:22 pm - 10:41 pmMSO Missoula Johnson-Bell Field-ONT Ontario

7h 19m1 stop Seattle/Tacoma Intl

$487Alaska Airlines

Wed, Jan 6 - Mon, Jan 11

4:01 pm - 11:52 pmONT Ontario-MSO Missoula Johnson-Bell Field

6h 51m1 stop Seattle/Tacoma Intl

7:01 am - 11:10 amMSO Missoula Johnson-Bell Field-ONT Ontario

5h 09m1 stop Seattle/Tacoma Intl

$487Alaska Airlines

Thu, Dec 17 - Tue, Dec 29

5:03 pm - 12:31 amONT Ontario-MSO Missoula Johnson-Bell Field

6h 28m1 stop Salt Lake City

6:25 pm - 10:12 pmMSO Missoula Johnson-Bell Field-ONT Ontario

4h 47m1 stop Salt Lake City

$487Delta

Thu, Oct 29 - Mon, Nov 2

12:02 pm - 9:18 pmONT Ontario-MSO Missoula Johnson-Bell Field

8h 16m1 stop Seattle/Tacoma Intl

4:21 pm - 11:06 pmMSO Missoula Johnson-Bell Field-ONT Ontario

7h 45m1 stop Seattle/Tacoma Intl

$487Alaska Airlines

Thu, Nov 5 - Mon, Nov 9

5:03 pm - 12:31 amONT Ontario-MSO Missoula Johnson-Bell Field

6h 28m1 stop Salt Lake City

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

4h 25m1 stop Salt Lake City

$489Delta

Fri, Oct 23 - Sun, Oct 25

6:00 am - 12:34 pmONT Ontario-MSO Missoula Johnson-Bell Field

5h 34m1 stop Salt Lake City

6:23 pm - 10:11 pmMSO Missoula Johnson-Bell Field-ONT Ontario

4h 48m1 stop Salt Lake City

$489Delta

Sat, Oct 17 - Sat, Oct 17

5:00 am - 1:32 pmONT Ontario-MSO Missoula Johnson-Bell Field

7h 32m1 stop Denver Intl

6:15 am - 12:46 pmMSO Missoula Johnson-Bell Field-ONT Ontario

7h 31m1 stop Denver Intl

$501United Airlines

Fri, Oct 16 - Fri, Oct 23

8:00 am - 1:50 pmONT Ontario-MSO Missoula Johnson-Bell Field

4h 50m1 stop Las Vegas Harry Reid Intl

6:05 pm - 7:04 amMSO Missoula Johnson-Bell Field-ONT Ontario

13h 59m1 stop Las Vegas Harry Reid Intl

$503Multiple Airlines

Thu, Oct 1 - Sun, Oct 4

5:00 am - 1:32 pmONT Ontario-MSO Missoula Johnson-Bell Field

7h 32m1 stop Denver Intl

4:15 pm - 10:51 pmMSO Missoula Johnson-Bell Field-ONT Ontario

7h 36m1 stop San Francisco

$509United Airlines

Fri, Oct 9 - Fri, Oct 16

8:00 am - 1:50 pmONT Ontario-MSO Missoula Johnson-Bell Field

4h 50m1 stop Las Vegas Harry Reid Intl

6:05 pm - 7:36 pmMSO Missoula Johnson-Bell Field-ONT Ontario

26h 31m2 stops Las Vegas Harry Reid Intl San Francisco

$543Multiple Airlines

Thu, Oct 1 - Sun, Oct 4

Cheap last minute flights

Enter your travel dates to find the best prices.

6:02 am - 3:17 pmONT Ontario-MSO Missoula Johnson-Bell Field

8h 15m1 stop Seattle/Tacoma Intl

2:05 pm - 7:03 pmMSO Missoula Johnson-Bell Field-ONT Ontario

5h 58m1 stop Seattle/Tacoma Intl

$549Alaska Airlines

Tue, Sep 22 - Fri, Sep 25

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

6h 47m1 stop Seattle/Tacoma Intl

1:19 pm - 5:18 pmMSO Missoula Johnson-Bell Field-ONT Ontario

4h 59m1 stop Portland

$549Alaska Airlines

Wed, Sep 23 - Wed, Sep 30

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

6h 47m1 stop Seattle/Tacoma Intl

1:19 pm - 5:18 pmMSO Missoula Johnson-Bell Field-ONT Ontario

4h 59m1 stop Portland

$549Alaska Airlines

Mon, Sep 21 - Wed, Sep 23

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

6h 47m1 stop Seattle/Tacoma Intl

1:19 pm - 5:18 pmMSO Missoula Johnson-Bell Field-ONT Ontario

4h 59m1 stop Portland

$549Alaska Airlines

Thu, Sep 24 - Tue, Sep 29

5:15 pm - 12:18 amONT Ontario-MSO Missoula Johnson-Bell Field

6h 03m1 stop Salt Lake City

1:17 pm - 10:40 pmMSO Missoula Johnson-Bell Field-ONT Ontario

10h 23m2 stops Salt Lake City Seattle/Tacoma Intl

$759Delta

Mon, Sep 21 - Fri, Sep 25

5:15 pm - 12:18 amONT Ontario-MSO Missoula Johnson-Bell Field

6h 03m1 stop Salt Lake City

6:50 am - 5:19 pmMSO Missoula Johnson-Bell Field-ONT Ontario

11h 29m2 stops Salt Lake City Seattle/Tacoma Intl

$759Delta

Fri, Sep 25 - Sat, Sep 26

11:54 am - 12:18 amONT Ontario-MSO Missoula Johnson-Bell Field

11h 24m2 stops Seattle/Tacoma Intl Salt Lake City

1:17 pm - 4:35 pmMSO Missoula Johnson-Bell Field-ONT Ontario

4h 18m1 stop Salt Lake City

$809Delta

Tue, Sep 22 - Fri, Sep 25

11:54 am - 12:18 amONT Ontario-MSO Missoula Johnson-Bell Field

11h 24m2 stops Seattle/Tacoma Intl Salt Lake City

1:17 pm - 10:40 pmMSO Missoula Johnson-Bell Field-ONT Ontario

10h 23m2 stops Salt Lake City Seattle/Tacoma Intl

$940Delta

Mon, Sep 21 - Fri, Sep 25

1:04 pm - 12:55 pmONT Ontario-MSO Missoula Johnson-Bell Field

22h 51m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

12:45 pm - 12:03 pmMSO Missoula Johnson-Bell Field-ONT Ontario

24h 18m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl

$945American Airlines

Tue, Sep 22 - Fri, Sep 25

7:11 pm - 12:55 pmONT Ontario-MSO Missoula Johnson-Bell Field

16h 44m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

12:45 pm - 12:06 pmMSO Missoula Johnson-Bell Field-ONT Ontario

24h 21m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl

$968American Airlines

Thu, Sep 24 - Mon, Sep 28

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Alaska Airlines flights from Ontario to Missoula

Our best Alaska Airlines deals on Ontario to Missoula flight tickets

Alaska Airlines

Oct 28

ONT7:25 amOntario

5h 01m

1 stop

MSO1:26 pmMissoula Johnson-Bell Field

Nov 3

MSO2:02 pmMissoula Johnson-Bell Field

5h 19m

1 stop

ONT6:21 pmOntario

$487

Alaska Airlines

Oct 30

ONT6:02 amOntario

7h 48m

1 stop

MSO2:50 pmMissoula Johnson-Bell Field

Nov 3

MSO2:02 pmMissoula Johnson-Bell Field

5h 19m

1 stop

ONT6:21 pmOntario

$488

Alaska Airlines

Oct 14

ONT6:02 amOntario

7h 48m

1 stop

MSO2:50 pmMissoula Johnson-Bell Field

Oct 21

MSO1:06 pmMissoula Johnson-Bell Field

8h 09m

1 stop

ONT8:15 pmOntario

$495

Delta flights from Ontario to Missoula

Our best Delta deals on Ontario to Missoula flight tickets

Delta

Oct 17

ONT6:00 amOntario

5h 34m

1 stop

MSO12:34 pmMissoula Johnson-Bell Field

Oct 17

MSO6:23 pmMissoula Johnson-Bell Field

4h 48m

1 stop

ONT10:11 pmOntario

$489

Delta

Oct 13

ONT5:03 pmOntario

6h 28m

1 stop

MSO12:31 amMissoula Johnson-Bell Field

Oct 17

MSO1:14 pmMissoula Johnson-Bell Field

4h 09m

1 stop

ONT4:23 pmOntario

$519

Delta

Oct 30

ONT9:45 amOntario

6h 58m

1 stop

MSO5:43 pmMissoula Johnson-Bell Field

Nov 3

MSO2:55 pmMissoula Johnson-Bell Field

8h 48m

2 stops

ONT10:43 pmOntario

$521

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Wed 1/6

7:00 am-3:32 pm

1 stop7h 32m

Missoula Johnson-Bell Field

Mon 1/11

4:22 pm-10:41 pm

1 stop7h 19m

$487

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Thu 12/17

4:01 pm-11:52 pm

1 stop6h 51m

Missoula Johnson-Bell Field

Tue 12/29

7:01 am-11:10 am

1 stop5h 09m

$487

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Thu 10/29

5:03 pm-12:31 am

1 stop6h 28m

Missoula Johnson-Bell Field

Mon 11/2

6:25 pm-10:12 pm

1 stop4h 47m

$487

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Thu 11/5

12:02 pm-9:18 pm

1 stop8h 16m

Missoula Johnson-Bell Field

Mon 11/9

4:21 pm-11:06 pm

1 stop7h 45m

$487

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Fri 10/23

5:03 pm-12:31 am

1 stop6h 28m

Missoula Johnson-Bell Field

Sun 10/25

5:30 am-8:55 am

1 stop4h 25m

$489

Quickest round-trip

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Sat 10/17

6:00 am-12:34 pm

1 stop5h 34m

Missoula Johnson-Bell Field

Sat 10/17

6:23 pm-10:11 pm

1 stop4h 48m

$489

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Fri 10/16

5:00 am-1:32 pm

1 stop7h 32m

Missoula Johnson-Bell Field

Fri 10/23

6:15 am-12:46 pm

1 stop7h 31m

$501

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Thu 10/1

8:00 am-1:50 pm

1 stop4h 50m

Missoula Johnson-Bell Field

Sun 10/4

6:05 pm-7:04 am

1 stop13h 59m

$503

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Fri 10/9

5:00 am-1:32 pm

1 stop7h 32m

Missoula Johnson-Bell Field

Fri 10/16

4:15 pm-10:51 pm

1 stop7h 36m

$509

OntarioMissoula

ONT Ontario - MSO Missoula Johnson-Bell Field

ONTMSO

Ontario

Thu 10/1

8:00 am-1:50 pm

1 stop4h 50m

Missoula Johnson-Bell Field

Sun 10/4

6:05 pm-7:36 pm

2 stops26h 31m

$543

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 typical price of a round-trip flight between Ontario and Missoula?

Prices are currently low for flights on this route.

Typical prices usually range from $389 to $568.
The lowest price recently found on this route was $324.

What is the cheapest month to fly to Missoula?

The month of February is, on average, the cheapest month to fly to Missoula from Ontario, with most prices found around $294. If you are unable to visit Missoula during the month of February, then departing from Ontario during the month January is also very affordable. Most momondo users find prices during this month for around $339.

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 $495.

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 $299. Flights at noon are often more expensive with an average ticket price of $404.

How have Ontario to Missoula flight prices changed over time?

As of September 2026, prices for Ontario to Missoula flights are approximately 64% more expensive 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

Best Price Found	$244
Fastest flight time	5h 59m
Direct flights	None

The best one-way flight to Missoula from Ontario in the past 72 hours is $244. The best round-trip flight deal from Ontario to Missoula found on momondo in the last 72 hours is $487.

The fastest flight from Ontario to Missoula takes 5h 59m

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 59m 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 September 2026, there are 3 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 (54% of total bookings). The next most popular airlines are Delta (26%) and United Airlines (20%).

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 12,950 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $239	Free Cancellation	Rating 7.4 10,230 reviews	Search United Airlines flights
Delta	PriceFrom $260	Free Cancellation	Rating 7.8 8,590 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.