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$96+ 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
Dec 9 — Dec 161
Tue 12/9
Tue 12/16
1 adult, Economy
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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 November 9, 2025.

This Delta deal was found by Cheapflights users on 11/7. 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 12/45:49 pmONT - BZN
1 stop27h 37mDelta
Sun 12/77:25 amBZN - ONT
1 stop28h 48mDelta
Deal found 11/7$226
This Alaska Airlines deal was found by Cheapflights users on 11/8. 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 12/56:00 amONT - BZN
1 stop7h 04mAlaska Airlines
Wed 12/1011:46 amBZN - ONT
1 stop7h 47mAlaska Airlines
Deal found 11/8$230
This Delta deal was found by Cheapflights users on 11/7. 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 11/271:20 pmONT - BZN
1 stop4h 26mDelta
Wed 12/33:00 pmBZN - ONT
1 stop8h 47mDelta
Deal found 11/7$231
This Delta deal was found by Cheapflights users on 11/8. 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 12/114:49 pmONT - BZN
1 stop6h 29mDelta
Sat 12/133:00 pmBZN - ONT
1 stop8h 47mDelta
Deal found 11/8$238
This Alaska Airlines deal was found by Cheapflights users on 11/8. 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 12/66:00 amONT - FCA
1 stop16h 58mAlaska Airlines
Wed 12/102:00 pmFCA - ONT
1 stop22h 19mAlaska Airlines
Deal found 11/8$244
This Alaska Airlines deal was found by Cheapflights users on 11/7. 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 12/912:13 pmONT - BIL
1 stop10h 55mAlaska Airlines
Tue 12/163:36 pmBIL - ONT
1 stop5h 27mAlaska Airlines
Deal found 11/7$260
This Delta deal was found by Cheapflights users on 11/7. 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 12/912:40 pmONT - BIL
2 stops10h 43mDelta
Tue 12/166:22 pmBIL - ONT
1 stop6h 36mDelta
Deal found 11/7$263
This Alaska Airlines deal was found by Cheapflights users on 11/8. 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 12/66:00 amONT - MSO
1 stop8h 32mAlaska Airlines
Tue 12/96:29 amMSO - ONT
1 stop13h 04mAlaska Airlines
Deal found 11/8$264
This Delta deal was found by Cheapflights users on 11/7. 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 11/276:00 amONT - BZN
1 stop3h 45mDelta
Mon 12/16:34 pmBZN - ONT
1 stop6h 18mDelta
Deal found 11/7$271
This Alaska Airlines deal was found by Cheapflights users on 11/7. 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 12/86:00 amONT - BZN
1 stop28h 06mAlaska Airlines
Mon 12/157:00 amBZN - ONT
1 stop17h 29mAlaska Airlines
Deal found 11/7$274
This Alaska Airlines deal was found by Cheapflights users on 11/7. 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.
Sun 11/166:00 amONT - BZN
1 stop7h 08mAlaska Airlines
Wed 11/193:02 pmBZN - ONT
1 stop6h 51mAlaska Airlines
Deal found 11/7$279
This Delta deal was found by Cheapflights users on 11/7. 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 12/16:00 amONT - FCA
1 stop4h 26mDelta
Fri 12/56:06 pmFCA - ONT
1 stop6h 52mDelta
Deal found 11/7$284

Cheap flight deals from Ontario to Montana

Keep the following information in mind while searching for Ontario to Montana flight deals. Data was last updated November 9, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$188
(Kiwi.com)

One-way from

$96
(Trip.com)

Popular in

March

Cheapest in

October

Average price

$399
Provider with most accurate pricing for Los Angeles-Bozeman Gallatin Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Bozeman Gallatin Field flights.
Search Deals
From Ontario to Montana
Search Deals
One-way flight from Ontario to Montana
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
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 November 9, 2025.
Use the filters below to find and compare flights from Ontario to Montana that are best for you.

Fly from

Ontario

Fly to

Montana

Route

Depart

Return

Price

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Fri 1/23

6:30 am-4:32 pm

1 stop9h 02m

Billings Logan Intl

Mon 1/26

10:39 am-9:17 pm

1 stop11h 38m

$188

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Sun 1/25

6:00 am-11:35 am

1 stop4h 35m

Kalispell Glacier Park

Wed 1/28

5:24 am-1:56 pm

2 stops9h 32m

$222

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Thu 12/4

5:49 pm-10:26 pm

1 stop27h 37m

Bozeman Gallatin Field

Sun 12/7

3:00 pm-11:13 am

1 stop21h 13m

$226

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 12/5

6:00 am-2:04 pm

1 stop7h 04m

Bozeman Gallatin Field

Wed 12/10

11:46 am-6:33 pm

1 stop7h 47m

$230

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Tue 4/28

7:00 am-1:07 pm

1 stop5h 07m

Bozeman Gallatin Field

Wed 4/29

8:00 am-2:33 pm

1 stop7h 33m

$230

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Wed 1/14

4:03 pm-11:56 pm

1 stop6h 53m

Bozeman Gallatin Field

Sat 1/24

1:46 pm-8:10 pm

1 stop7h 24m

$230

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Thu 2/5

4:03 pm-11:56 pm

1 stop6h 53m

Bozeman Gallatin Field

Tue 2/10

7:20 am-3:08 pm

1 stop8h 48m

$230

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Sun 2/1

6:00 am-2:09 pm

1 stop7h 09m

Bozeman Gallatin Field

Sat 2/7

1:46 pm-8:10 pm

1 stop7h 24m

$230

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Sat 4/25

6:00 am-10:51 am

1 stop3h 51m

Bozeman Gallatin Field

Mon 4/27

3:40 pm-10:40 pm

1 stop8h 00m

$231

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Sat 4/25

5:05 pm-11:02 pm

1 stop4h 57m

Kalispell Glacier Park

Wed 4/29

6:12 pm-11:44 pm

1 stop6h 32m

$238

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/7

Showing 1-10 of 60 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.

Cheapflights Insights

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

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

Currently, May is the cheapest month in which you can book a flight from Ontario to Montana (average of $90). Flying from Ontario to Montana in October is currently the most expensive (average of $187). 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 November 9, 2025.

One of the essential ways to save on airfare from Ontario to Montana is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 37% on airfare.

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 November 9, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Ontario to Montana have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,255 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,255 reviews
Alaska Airlines
8.0
Very good
11,255 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Southwest
8.0
Very good
4,236 reviews
Alaska Airlines
8.0
Very good
11,255 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
7.9
Good
8,000 reviews
Alaska Airlines
8.0
Very good
11,255 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
9,012 reviews
Alaska Airlines
8.0
Very good
11,255 reviews

Food

7.1

Entertainment

7.0

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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.

  • How long is the flight from Ontario to Montana?

    A quick flight from Ontario to Montana can take about 4h 35m. Delta provides one of the quickest options available for as low as $222. Airlines will cover a distance of 999 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $105 on Alaska Airlines. Other airlines that offer cheap prices include Delta from $109 and United Airlines from $191 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, May is the cheapest month in which you can book a flight from Ontario to Montana (average of $90). Flying from Ontario to Montana in October is currently the most expensive (average of $187). 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.

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Alternative routes for Ontario to Montana

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

Discover the top 4 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 November 9, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$178Average$396FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$189Average$396FlexibilityNo cancel feeOn-time69%
DeltaCheapest$198Average$356FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$211Average$376FlexibilityNo cancel feeOn-time63%

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