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.
ONT — MSO
May 30 — Jun 61

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

February

Cheapest in

December

Average price

$395

Round-trip from

$287
High demand for flights, 39% potential price rise
Best time to find cheap flights, 49% potential price drop
Average for round-trip flights in May 2023
From Ontario to Missoula Johnson-Bell Field

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

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.

Fly from

Any airport

Fly to

Any airport

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

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Thu 8/31

2 stops18h 50m

Missoula Johnson-Bell Field

Mon 9/4

1 stop27h 26m

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Sat 9/2

1 stop4h 14m

Missoula Johnson-Bell Field

Sat 9/9

1 stop6h 57m

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Sat 9/2

1 stop6h 58m

Missoula Johnson-Bell Field

Wed 9/6

1 stop6h 59m

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Sat 9/2

2 stops28h 18m

Missoula Johnson-Bell Field

Wed 9/6

1 stop6h 59m

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Fri 8/18

1 stop6h 04m

Missoula Johnson-Bell Field

Sat 8/26

1 stop7h 12m

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Thu 9/21

1 stop25h 37m

Missoula Johnson-Bell Field

Tue 9/26

1 stop5h 00m

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Sun 9/3

1 stop4h 14m

Missoula Johnson-Bell Field

Sun 9/10

1 stop6h 57m

OntarioMissoula Johnson-Bell Field

ONT - MSO

ONTMSO

Ontario

Thu 9/21

2 stops19h 17m

Missoula Johnson-Bell Field

Tue 9/26

2 stops21h 02m

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

Crew

8.6

Overall

8.0

Boarding

8.3

Entertainment

7.1

Food

7.2

Comfort

8.0

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

Crew

8.6

Overall

8.0

Boarding

8.3

Entertainment

7.1

Food

7.2

Comfort

8.0

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

Crew

8.6

Overall

8.0

Boarding

8.3

Entertainment

7.1

Food

7.2

Comfort

8.0

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

Crew

8.6

Overall

8.0

Boarding

8.3

Entertainment

7.1

Food

7.2

Comfort

8.0

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

Crew

8.6

Overall

8.0

Boarding

8.3

Entertainment

7.1

Food

7.2

Comfort

8.0

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

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

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.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Alaska AirlinesCheapest$217Average$420FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
DeltaCheapest$287Average$555FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
United AirlinesCheapest$315Average$674FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
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