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$118+ Cheap flights from Ontario (ONT) to Montana

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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
Jan 25 — Feb 11
Sat 1/25
Sat 2/1
1 adult, Economy
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Cheap flight deals from Ontario to Montana

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Montana (USMT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 20, 2025.

Round-trip from

$236
(Alaska Airlines)

One-way from

$118
(Alaska Airlines)
From Ontario to Montana
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One-way flight from Ontario to Montana
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Find flight deals from Ontario to Montana

Cheapest flights from Ontario to Montana
Explore the most affordable flight options available from Ontario to Montana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2025.

This Alaska Airlines deal was found by Cheapflights users on 1/19. 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.
Sat 3/16:00 amONT - BZN
1 stop6h 58mAlaska Airlines
Sat 3/82:53 pmBZN - ONT
1 stop6h 24mAlaska Airlines
Deal found 1/19$236
This Delta deal was found by Cheapflights users on 1/19. 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.
Tue 4/155:05 pmONT - MSO
1 stop6h 20mDelta
Tue 4/226:10 pmMSO - ONT
1 stop6h 35mDelta
Deal found 1/19$237
This Delta deal was found by Cheapflights users on 1/19. 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 2/75:10 pmONT - BZN
1 stop4h 46mDelta
Tue 2/116:41 pmBZN - ONT
1 stop6h 10mDelta
Deal found 1/19$237
This Delta deal was found by Cheapflights users on 1/20. 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 2/196:00 amONT - BIL
1 stop4h 00mDelta
Wed 2/266:35 pmBIL - ONT
1 stop6h 16mDelta
Deal found 1/20$237
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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.
Fri 3/147:00 amONT - MSO
1 stop6h 59mAlaska Airlines
Tue 3/256:38 pmMSO - ONT
1 stop17h 01mAlaska Airlines
Deal found 1/20$246
This Delta deal was found by Cheapflights users on 1/20. 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.
Sun 3/26:00 amONT - FCA
1 stop4h 49mDelta
Fri 3/75:59 pmFCA - ONT
1 stop6h 52mDelta
Deal found 1/20$257
This Southwest deal was found by Cheapflights users on 1/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/35:40 amONT - BZN
1 stop8h 25mSouthwest
Tue 4/82:25 pmBZN - ONT
1 stop9h 25mSouthwest
Deal found 1/19$259
This United Airlines deal was found by Cheapflights users on 1/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/51:35 pmONT - FCA
1 stop7h 24mUnited Airlines
Tue 4/82:28 pmFCA - ONT
1 stop7h 14mUnited Airlines
Deal found 1/19$264
This Alaska Airlines deal was found by Cheapflights users on 1/19. 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.
Sat 4/57:00 amONT - FCA
2 stops11h 58mAlaska Airlines
Tue 4/86:14 pmFCA - ONT
1 stop6h 45mAlaska Airlines
Deal found 1/19$295
This Alaska Airlines deal was found by Cheapflights users on 1/19. 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 5/69:56 amONT - BIL
1 stop28h 11mAlaska Airlines
Tue 5/133:47 pmBIL - ONT
1 stop5h 32mAlaska Airlines
Deal found 1/19$304
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/75:00 amONT - BZN
1 stop7h 01mUnited Airlines
Tue 4/810:40 amBZN - ONT
1 stop5h 37mUnited Airlines
Deal found 1/20$307
This United Airlines deal was found by Cheapflights users on 1/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/61:20 pmONT - BIL
1 stop6h 38mUnited Airlines
Tue 5/137:00 amBIL - ONT
2 stops8h 25mUnited Airlines
Deal found 1/19$312

Find flights from Ontario to Montana within your budget

Customize your flight search to find flights from Ontario to Montana 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 January 20, 2025.

Fly from

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Fly to

Any airport

Route

Depart

Return

Price

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Sat 3/1

6:00 am-1:58 pm

1 stop6h 58m

Bozeman Gallatin Field

Sat 3/8

2:53 pm-8:17 pm

1 stop6h 24m

$236

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 4/15

5:05 pm-12:25 am

1 stop6h 20m

Missoula Johnson-Bell Field

Tue 4/22

6:10 pm-11:45 pm

1 stop6h 35m

$237

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 2/7

5:10 pm-10:56 pm

1 stop4h 46m

Bozeman Gallatin Field

Tue 2/11

6:41 pm-11:51 pm

1 stop6h 10m

$237

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 2/19

6:00 am-11:00 am

1 stop4h 00m

Billings Logan Intl

Wed 2/26

6:35 pm-11:51 pm

1 stop6h 16m

$237

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Fri 3/14

7:00 am-2:59 pm

1 stop6h 59m

Missoula Johnson-Bell Field

Tue 3/25

6:38 pm-10:39 am

1 stop17h 01m

$246

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Sun 3/2

6:00 am-11:49 am

1 stop4h 49m

Kalispell Glacier Park

Fri 3/7

5:59 pm-11:51 pm

1 stop6h 52m

$257

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Thu 4/3

5:40 am-3:05 pm

1 stop8h 25m

Bozeman Gallatin Field

Tue 4/8

2:25 pm-10:50 pm

1 stop9h 25m

$259

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Sat 4/5

1:35 pm-9:59 pm

1 stop7h 24m

Kalispell Glacier Park

Tue 4/8

2:28 pm-8:42 pm

1 stop7h 14m

$264

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Sat 4/5

7:00 am-7:58 pm

2 stops11h 58m

Kalispell Glacier Park

Tue 4/8

6:14 pm-11:59 pm

1 stop6h 45m

$295

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 5/6

9:56 am-3:07 pm

1 stop28h 11m

Billings Logan Intl

Tue 5/13

3:47 pm-8:19 pm

1 stop5h 32m

$304

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 40 results
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Best time to book a flight from Ontario to Montana

Have a flexible travel schedule? Discover the best time to fly to Montana from Ontario 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.

Travel insights for flights from Ontario to Montana

Get recent, data-driven insights about flights from Ontario to Montana including ideal travel times, pricing trends, and more.

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

Currently, October is the cheapest month in which you can book a flight from Ontario to Montana (average of $371). Flying from Ontario to Montana in June is currently the most expensive (average of $520). 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 ONT to MT?

Find hourly flight availability from Ontario to Montana. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Montana as you normally would.

Rainfall in Montana by month

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

In terms of precipitation, rainfall in Montana ranges from 0.4 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. January is typically the driest time to visit Montana when rainfall is around 0.4 in.

Temperature in Montana by month

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

If weather is an important factor for your trip to Montana, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

Reviews of airlines servicing Montana

Get insights into the airlines that provide service to Montana. 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 Montana. Reviews last updated January 20, 2025.
Read reviews from past customers who have flown Delta, American Airlines and Alaska Airlines from Ontario to Montana. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,696 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,521 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
8,982 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Food

7.2

Entertainment

7.7

Overall

8.1

Comfort

8.1

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

Find useful and relevant information for your journey from Ontario to Montana. 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 from for flights from Ontario to Montana?

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

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

    One-way options have recently been found by users for as low as $118 on Alaska Airlines. Other airlines that offer cheap prices include Delta from $119 and United Airlines from $149 one-way.

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

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Montana 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 Ontario to Montana?

    Currently, October is the cheapest month in which you can book a flight from Ontario to Montana (average of $371). Flying from Ontario to Montana in June is currently the most expensive (average of $520). 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 Ontario to Montana

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Top 5 airlines flying from Ontario to Montana

Discover the top 5 airlines that operate flights from Ontario to Montana. 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 January 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$168Average$254FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$219Average$402FlexibilityNo cancel feeOn-time75%
DeltaCheapest$223Average$478FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$292Average$398FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$304Average$535FlexibilityNo cancel feeOn-time69%
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