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

Undisclosed Carrier, at $202, was found to be the cheapest airline from Ontario to Missoula.Alternate airlines to your destination round-trip include Delta and United Airlines. Undisclosed Carrier is priced at 64% 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 United Airlines. According to our data, you can fly for as low as $139. Users have also found prices from $218 and $219 on Alaska Airlines and Delta, respectively.

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

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

Can I find flights from Ontario to Missoula for under $300 on Cheapflights?

Yes, there are multiple flights from Ontario to Missoula for under $300. The cheapest flight booked recently is on Undisclosed Carrier for just $202, but on average you can expect to pay $359.

Are there last-minute flights available from Ontario to Missoula for under $700?

There are currently 3+ open flights from Ontario to Missoula within the next 7 days for less than $700.

Which airlines flying from Ontario to Missoula Johnson-Bell Field have flexible cancellations due to COVID-19?

Delta, Alaska Airlines, and United Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

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

Flying to your destination on a Friday 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 62% on this flight, we recommend booking at least 40 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 $492 1-2 weeks out and tickets from $612 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 November. For low rates, February can be a great choice for travel to Missoula. Flights to Missoula from Ontario in February are about $393 on average during February, but can be found for as low as $242.

When is the cheapest time to fly from Ontario to Missoula (ONT - MSO)?

A simple way to save on the total cost of your ticket is to fly from Ontario to Missoula at noon. If you’re flexible enough to do this you can expect to save up to 70% on your trip compared to booking a flight in the evening.

What does ONT to MSO mean?

This is defined as Ontario Airport (ONT) and Missoula Johnson-Bell Field Airport (MSO). Codes like Missoula Johnson-Bell Field Airport are often used to just call airports uniquely.

Flights from Ontario, CA to Missoula, MT from $139

How to find the cheapest flight from Ontario (ONT) to Missoula (MSO)

Popular in	February
Cheapest in	December
Average price	$395
Round-trip from	$287

High demand for flights, 39% potential price rise

Search Deals

Best time to find cheap flights, 49% potential price drop

Search Deals

Average for round-trip flights in May 2023

Search Deals

From Ontario to Missoula Johnson-Bell Field

Search Deals

ONT - MSO Price	$287 - $931
MSO Temperature	24.8 - 68 °F
MSO Rainfall	0.7 - 2.1 inches

ONT - MSO

Price

$287 - $931

MSO

Temperature

24.8 - 68 °F

MSO

Rainfall

0.7 - 2.1 inches

Cheap flights from Ontario to Missoula in May, June 2023

Listed are some of the best fares we've found on flights departing from Ontario to Missoula in 2023. Check back regularly for other flight deals.

Jun 24 - Jul 3

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

4h 07m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

5h 57m

$437

Delta

Deal found 5/25

Jun 24 - Jun 28

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

16h 59m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

7h 59m

$450

Alaska Airlines

Deal found 5/24

Jun 24 - Jul 1

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

16h 59m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

7h 39m

$455

Alaska Airlines

Deal found 5/24

Jun 24 - Jun 30

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

16h 59m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

4h 54m

$461

Alaska Airlines

Deal found 5/24

Jun 8 - Jun 12

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

26h 53m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

18h 42m

$465

United Airlines

Deal found 5/24

Jun 17 - Jul 2

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

12h 24m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

4h 54m

$475

Alaska Airlines

Deal found 5/25

Jun 17 - Jul 2

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

6h 04m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

5h 57m

$477

Delta

Deal found 5/24

Jun 16 - Jul 3

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

26h 53m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

7h 20m

$516

United Airlines

Deal found 5/25

Jun 26 - Jul 3

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

4h 07m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

5h 57m

$527

Delta

Deal found 5/25

Ontario to Missoula 2023 flight deals

Listed are some of the best fares we've found on flights departing from Ontario to Missoula in 2023. Check back regularly for other flight deals.

Aug 31 - Sep 4

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

20h 30m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

9h 55m

$202

Undisclosed Carrier

Deal found 5/24

Aug 31 - Sep 4

ONT

Ontario

MSO

Missoula Johnson-Bell Field

2 stops

18h 50m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

27h 26m

$245

Multiple Airlines

Deal found 5/24

Sep 2 - Sep 9

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

4h 14m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

6h 57m

$287

Delta

Deal found 5/24

Sep 2 - Sep 6

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

6h 58m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

6h 59m

$297

United Airlines

Deal found 5/24

Sep 2 - Sep 6

ONT

Ontario

MSO

Missoula Johnson-Bell Field

2 stops

28h 18m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

6h 59m

$306

United Airlines

Deal found 5/24

Aug 18 - Aug 26

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

6h 04m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

7h 12m

$327

Delta

Deal found 5/24

Sep 21 - Sep 26

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

25h 37m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

5h 00m

$341

Alaska Airlines

Deal found 5/24

Sep 3 - Sep 10

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

4h 14m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

6h 57m

$347

Delta

Deal found 5/24

Aug 8 - Aug 9

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

4h 14m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

7h 12m

$377

Delta

Deal found 5/24

Cheap Delta flights from Ontario to Missoula

Check out some of the cheapest Delta flights we've come across from Ontario to Missoula. Make sure to double check the flight details before booking.

Sep 2 - Sep 9

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

4h 14m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

6h 57m

$287

Delta

Deal found 5/24

Aug 18 - Aug 26

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

6h 04m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

7h 12m

$327

Delta

Deal found 5/24

Sep 3 - Sep 10

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

4h 14m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

6h 57m

$347

Delta

Deal found 5/24

Aug 8 - Aug 9

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

4h 14m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

7h 12m

$377

Delta

Deal found 5/24

Sep 1 - Sep 8

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

4h 14m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

6h 13m

$387

Delta

Deal found 5/24

Aug 7 - Aug 9

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

4h 14m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

7h 12m

$407

Delta

Deal found 5/24

Jun 24 - Jul 2

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

4h 07m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

5h 57m

$437

Delta

Deal found 5/25

Jul 11 - Jul 18

ONT

Ontario

MSO

Missoula Johnson-Bell Field

2 stops

11h 39m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

7h 21m

$442

Delta

Deal found 5/24

Jun 17 - Jul 2

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

6h 04m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

5h 57m

$477

Delta

Deal found 5/24

Cheap United Airlines flights from Ontario to Missoula

To aid your search, here are some of the cheapest United Airlines flights we've found from Ontario to Missoula. Check back soon if you're not seeing flights that suit your needs.

Sep 2 - Sep 6

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

6h 58m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

6h 59m

$297

United Airlines

Deal found 5/24

Sep 2 - Sep 6

ONT

Ontario

MSO

Missoula Johnson-Bell Field

2 stops

28h 18m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

6h 59m

$306

United Airlines

Deal found 5/24

Aug 18 - Aug 26

ONT

Ontario

MSO

Missoula Johnson-Bell Field

2 stops

24h 48m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

6h 59m

$380

United Airlines

Deal found 5/24

Aug 18 - Aug 26

ONT

Ontario

MSO

Missoula Johnson-Bell Field

2 stops

24h 48m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

2 stops

18h 39m

$388

United Airlines

Deal found 5/24

Jun 8 - Jun 12

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

26h 53m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

18h 42m

$465

United Airlines

Deal found 5/24

Aug 20 - Aug 25

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

6h 58m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

2 stops

10h 50m

$472

United Airlines

Deal found 5/25

Jun 4 - Jun 9

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

5h 14m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

8h 58m

$628

United Airlines

Deal found 5/23

Jun 4 - Jun 5

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

5h 14m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

6h 59m

$661

United Airlines

Deal found 5/24

Jun 4 - Jun 5

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

7h 01m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

3 stops

14h 30m

$798

United Airlines

Deal found 5/24

Last minute flights from Ontario to Missoula

Users seeking a last-minute flight from Ontario to Missoula should consider booking one of these fares. It's wise to confirm all flight details are correct before booking.

Jun 4 - Jun 9

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

5h 14m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

8h 58m

$628

United Airlines

Deal found 5/23

Jun 4 - Jun 5

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

5h 14m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

1 stop

6h 59m

$661

United Airlines

Deal found 5/24

Jun 4 - Jun 5

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

7h 01m

MSO

Missoula Johnson-Bell Field

ONT

Ontario

3 stops

14h 30m

$798

United Airlines

Deal found 5/24

One-way flights to Missoula from Ontario

Users in need of a one-way flight from Ontario to Missoula can choose from these deals. Users can also find round-trip Ontario to Missoula flights by using the search form above.

Sep 3

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

6h 58m

$139

United Airlines

Deal found 5/25

Jun 23

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

25h 34m

$218

Alaska Airlines

Deal found 5/25

Jun 24

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

4h 07m

$219

Delta

Deal found 5/24

Sep 3

ONT

Ontario

MSO

Missoula Johnson-Bell Field

2 stops

11h 43m

$224

American Airlines

Deal found 5/25

Jun 20

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

6h 44m

$228

Alaska Airlines

Deal found 5/24

Jun 20

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

16h 59m

$233

Alaska Airlines

Deal found 5/25

Jun 24

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

16h 59m

$248

Alaska Airlines

Deal found 5/24

Jun 25

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

16h 59m

$268

Alaska Airlines

Deal found 5/25

Jun 24

ONT

Ontario

MSO

Missoula Johnson-Bell Field

1 stop

25h 34m

$318

Alaska Airlines

Deal found 5/25

Find flights from Ontario to Missoula within your budget

Fly from

Fly to

Budget

$202 - $417

Route

Depart

Return

Price

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Thu 8/31

1 stop20h 30m

Missoula Johnson-Bell Field

Mon 9/4

1 stop9h 55m

$202

Pick Dates

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Thu 8/31

2 stops18h 50m

Missoula Johnson-Bell Field

Mon 9/4

1 stop27h 26m

$245

Pick Dates

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Sat 9/2

1 stop4h 14m

Missoula Johnson-Bell Field

Sat 9/9

1 stop6h 57m

$287

Pick Dates

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Sat 9/2

1 stop6h 58m

Missoula Johnson-Bell Field

Wed 9/6

1 stop6h 59m

$297

Pick Dates

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Sat 9/2

2 stops28h 18m

Missoula Johnson-Bell Field

Wed 9/6

1 stop6h 59m

$306

Pick Dates

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Fri 8/18

1 stop6h 04m

Missoula Johnson-Bell Field

Sat 8/26

1 stop7h 12m

$327

Pick Dates

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Thu 9/21

1 stop25h 37m

Missoula Johnson-Bell Field

Tue 9/26

1 stop5h 00m

$341

Pick Dates

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Sun 9/3

1 stop4h 14m

Missoula Johnson-Bell Field

Sun 9/10

1 stop6h 57m

$347

Pick Dates

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Thu 9/21

2 stops19h 17m

Missoula Johnson-Bell Field

Tue 9/26

2 stops21h 02m

$417

Pick Dates

Flights are sorted by cheapest first

Deals found on 5/24

Reviews of Airlines Servicing Missoula

See what other customers who have flown with Delta, United Airlines and Alaska 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

1,375 reviews

Check prices

Reviews

1 / 10

The plane stalled on the tarmac for over 30 minutes. No Alaska Air staff were available to help passengers with connecting flights jump the customs line. I missed my connecting flight. Never flying Alaska again.

Alaska Airlines

8.0

Very good

1,375 reviews

Alaska Airlines

8.0

Very good

1,375 reviews

Check prices

Reviews

1 / 10

The plane stalled on the tarmac for over 30 minutes. No Alaska Air staff were available to help passengers with connecting flights jump the customs line. I missed my connecting flight. Never flying Alaska again.

Delta

8.0

Very good

2,341 reviews

Alaska Airlines

8.0

Very good

1,375 reviews

Check prices

Reviews

1 / 10

The plane stalled on the tarmac for over 30 minutes. No Alaska Air staff were available to help passengers with connecting flights jump the customs line. I missed my connecting flight. Never flying Alaska again.

United Airlines

7.6

Good

1,486 reviews

Alaska Airlines

8.0

Very good

1,375 reviews

Check prices

Reviews

1 / 10

The plane stalled on the tarmac for over 30 minutes. No Alaska Air staff were available to help passengers with connecting flights jump the customs line. I missed my connecting flight. Never flying Alaska again.

American Airlines

7.4

Good

2,147 reviews

Alaska Airlines

8.0

Very good

1,375 reviews

Check prices

Reviews

1 / 10

The plane stalled on the tarmac for over 30 minutes. No Alaska Air staff were available to help passengers with connecting flights jump the customs line. I missed my connecting flight. Never flying Alaska again.

Related info for your journey

Alternative routes for Ontario to Missoula

Oakland to Missoulafrom $71 pp

Los Angeles to Missoulafrom $72 pp

Santa Ana to Missoulafrom $77 pp

Burbank to Bozemanfrom $81 pp

Los Angeles to Kalispellfrom $114 pp

Oakland to Kalispellfrom $120 pp

Top 3 airlines flying from Ontario to Missoula

Airline	Cheapest	Average	Flexibility	On-time	COVID-19 safety
Alaska Airlines	Cheapest$217	Average$420	FlexibilityNo cancel fee	On-time75%	COVID-19 safety	Search Alaska Airlines flights
Delta	Cheapest$287	Average$555	FlexibilityNo cancel fee	On-timeN/A	COVID-19 safety	Search Delta flights
United Airlines	Cheapest$315	Average$674	FlexibilityNo cancel fee	On-time69%	COVID-19 safety	Search United Airlines flights

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Cheap flights from Ontario to Missoula (ONT - MSO) from $139

This is the cheapest one-way flight price, found on 5/25. Prices may vary by date and flight preferences.

The best prices from Ontario to Missoula Johnson-Bell Field are usually found in December or October, booked 45 days in advance, depart on a Friday or Monday and return on a Tuesday

How to find the cheapest flight from Ontario (ONT) to Missoula (MSO)

All the information you need to plan the best ONT to MSO flight in 2023: compare Ontario to Missoula flight prices with the expected peak season, weather and rainfall in Missoula.

Popular in

Cheapest in

Average price

Round-trip from

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

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

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

When is the cheapest time to fly from Ontario to Missoula (ONT - MSO)?

Cheap flights from Ontario to Missoula in May, June 2023

The best prices found for ONT to MSO flights for May, June

Listed are some of the best fares we've found on flights departing from Ontario to Missoula in 2023. Check back regularly for other flight deals.

Ontario to Missoula 2023 flight deals

Cheap flights to Missoula from Ontario found for this year

Listed are some of the best fares we've found on flights departing from Ontario to Missoula in 2023. Check back regularly for other flight deals.

Cheap Delta flights from Ontario to Missoula

Check out some of the cheapest Delta flights we've come across from Ontario to Missoula. Make sure to double check the flight details before booking.

Cheap United Airlines flights from Ontario to Missoula

To aid your search, here are some of the cheapest United Airlines flights we've found from Ontario to Missoula. Check back soon if you're not seeing flights that suit your needs.

Last minute flights from Ontario to Missoula

Late deals on return flights to Missoula from Ontario, departing today and this week

Users seeking a last-minute flight from Ontario to Missoula should consider booking one of these fares. It's wise to confirm all flight details are correct before booking.

One-way flights to Missoula from Ontario

The cheapest one-way flights from Ontario to Missoula

Users in need of a one-way flight from Ontario to Missoula can choose from these deals. Users can also find round-trip Ontario to Missoula flights by using the search form above.

Find flights from Ontario to Missoula within your budget

Use the slider to find flights from Ontario to Missoula that fit your budget.

Reviews of Airlines Servicing Missoula

See what other customers who have flown with Delta, United Airlines and Alaska 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

Useful info, stats and facts about Ontario to Missoula flights.

Which airlines flying from Ontario to Missoula Johnson-Bell Field have flexible cancellations due to COVID-19?

Can I find flights from Ontario to Missoula for under $300 on Cheapflights?

Are there last-minute flights available from Ontario to Missoula for under $700?

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?

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

What does ONT to MSO mean?

Other flights from Ontario

Other flights to Missoula

Flights to Missoula from Ontario

Rent a Car

Alternative routes for Ontario to Missoula

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Ontario to Missoula

The chart below displays the airlines Cheapflights users traveling from Ontario to Missoula choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.

Popular flight searches

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