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$132+ Cheap flights from Montana to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — ONT
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheap flight deals from Montana to Ontario

Keep the following information in mind while searching for Montana to Ontario flight deals. Data was last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$270
(Delta)

One-way from

$132
(Alaska Airlines)

Popular in

March

Cheapest in

January

Average price

$408
Provider with most accurate pricing for Bozeman Gallatin Field-Los Angeles flight deals.
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From Montana to Ontario
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One-way flight from Montana to Ontario
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Highest demand for flights based on searches. 4% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Montana to Ontario

Cheapest flights from Montana to Ontario
Explore the most affordable flight options available from Montana to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Delta deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/45:59 pmBIL - ONT
1 stop6h 43mDelta
Tue 6/1011:49 amONT - BIL
2 stops9h 40mDelta
Deal found 3/27$270
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/246:39 pmMSO - ONT
1 stop5h 07mHawaiian Airlines
Wed 5/284:45 pmONT - MSO
1 stop5h 51mHawaiian Airlines
Deal found 3/27$271
This Delta deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/155:40 amBZN - ONT
1 stop4h 31mDelta
Tue 5/276:00 amONT - BZN
1 stop3h 49mDelta
Deal found 3/27$275
This Delta deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/246:20 pmMSO - ONT
1 stop4h 56mDelta
Wed 5/286:00 amONT - MSO
2 stops10h 39mDelta
Deal found 3/27$277
This Delta deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/185:55 pmFCA - ONT
1 stop6h 46mDelta
Sun 4/205:15 pmONT - FCA
1 stop6h 07mDelta
Deal found 3/27$285
This Alaska Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/242:54 pmMSO - ONT
1 stop10h 05mAlaska Airlines
Thu 5/111:46 amONT - MSO
1 stop5h 08mAlaska Airlines
Deal found 3/27$285
This Alaska Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/283:47 pmBIL - ONT
1 stop18h 29mAlaska Airlines
Wed 4/304:29 pmONT - BIL
1 stop6h 30mAlaska Airlines
Deal found 3/27$303
This Alaska Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/297:29 pmHLN - ONT
1 stop16h 22mAlaska Airlines
Tue 5/611:46 amONT - HLN
1 stop6h 03mAlaska Airlines
Deal found 3/28$303
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/303:59 pmBZN - ONT
1 stop7h 47mHawaiian Airlines
Fri 6/64:45 pmONT - BZN
1 stop6h 06mHawaiian Airlines
Deal found 3/27$305
This Delta deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/205:45 amHLN - ONT
1 stop4h 13mDelta
Mon 10/275:05 pmONT - HLN
1 stop4h 28mDelta
Deal found 3/27$329
This Alaska Airlines deal was found by Cheapflights users on 3/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/276:35 pmFCA - ONT
1 stop6h 24mAlaska Airlines
Mon 9/111:39 amONT - FCA
1 stop5h 16mAlaska Airlines
Deal found 3/26$338
This Alaska Airlines deal was found by Cheapflights users on 3/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1511:24 amBZN - ONT
1 stop7h 59mAlaska Airlines
Fri 4/186:00 amONT - BZN
2 stops7h 11mAlaska Airlines
Deal found 3/27$354

Cheapflights Fare Finder

Customize your flight search to find flights from Montana to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2025.
Use the filters below to find and compare flights from Montana to Ontario that are best for you.

Fly from

Montana

Fly to

Ontario

Route

Depart

Return

Price

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Wed 6/4

5:59 pm-11:42 pm

1 stop6h 43m

Ontario

Tue 6/10

11:49 am-10:29 pm

2 stops9h 40m

$270

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Sat 5/24

6:39 pm-10:46 pm

1 stop5h 07m

Ontario

Wed 5/28

4:45 pm-11:36 pm

1 stop5h 51m

$271

BozemanOntario

BZN - ONT

BZNONT

Bozeman Gallatin Field

Thu 5/15

5:40 am-9:11 am

1 stop4h 31m

Ontario

Tue 5/27

6:00 am-10:49 am

1 stop3h 49m

$275

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Sat 5/24

6:20 pm-10:16 pm

1 stop4h 56m

Ontario

Wed 5/28

6:00 am-5:39 pm

2 stops10h 39m

$277

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Thu 4/24

2:54 pm-11:59 pm

1 stop10h 05m

Ontario

Thu 5/1

11:46 am-5:54 pm

1 stop5h 08m

$285

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Fri 4/18

5:55 pm-11:41 pm

1 stop6h 46m

Ontario

Sun 4/20

5:15 pm-12:22 am

1 stop6h 07m

$285

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Mon 4/28

3:47 pm-9:16 am

1 stop18h 29m

Ontario

Wed 4/30

4:29 pm-11:59 pm

1 stop6h 30m

$303

HelenaOntario

HLN - ONT

HLNONT

Helena

Tue 4/29

7:29 pm-10:51 am

1 stop16h 22m

Ontario

Tue 5/6

11:46 am-6:49 pm

1 stop6h 03m

$303

BozemanOntario

BZN - ONT

BZNONT

Bozeman Gallatin Field

Fri 5/30

3:59 pm-10:46 pm

1 stop7h 47m

Ontario

Fri 6/6

4:45 pm-11:51 pm

1 stop6h 06m

$305

KalispellOntario

FCA - ONT

FCAONT

Kalispell Glacier Park

Wed 8/27

6:35 pm-11:59 pm

1 stop6h 24m

Ontario

Mon 9/1

11:39 am-5:55 pm

1 stop5h 16m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 44 results
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Best time to book a flight from Montana to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Montana with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Montana to Ontario

What is the cheapest month to book a flight from Montana to Ontario?

Currently, August is the cheapest month in which you can book a flight from Montana to Ontario (average of $246). Flying from Montana to Ontario in March is currently the most expensive (average of $326). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MT to ONT?

Find hourly flight availability from Montana to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

When flying from Montana to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated March 28, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Montana to Ontario to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Alaska Airlines
8.0
Very good
9,798 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Delta
8.0
Very good
7,897 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Hawaiian Airlines
7.9
Good
2,336 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
United Airlines
7.4
Good
8,603 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Related info for your journey

Find useful and relevant information for your journey from Montana to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Montana?

    For a flight from Montana to Ontario, you will be flying into Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

  • What are the cheapest airlines to fly from Montana to Ontario one-way?

    The cheapest airlines for a one-way flight from Montana to Ontario are Alaska Airlines ($132), Hawaiian Airlines ($132), and Delta ($143).

  • What are the most popular routes from Montana to Ontario?

    When deciding which route to take from Montana to Ontario consider Bozeman Gallatin Field - Ontario, Billings Logan Intl - Ontario or Kalispell Glacier Park - Ontario as they are the most popular.

  • Can I find deals for flights from Montana to Ontario that include hotel bookings?

    Yes. In addition to deals on Montana to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montana to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montana to Ontario.

  • Can I find deals for business class flights from Montana to Ontario?

    Yes. Cheapflights offers flight deals from Montana to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montana to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Montana to Ontario (average of $246). Flying from Montana to Ontario in March is currently the most expensive (average of $326). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Montana to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Montana to Ontario

Discover the top 4 airlines that operate flights from Montana to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$82Average$382FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$232Average$500FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$437FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$256Average$361FlexibilityNo cancel feeOn-time63%
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