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$82+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Cheap 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 December 23, 2025.

This Delta deal was found by Cheapflights users on 12/21. 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 12/235:10 pmONT - BZN
1 stop5h 37mDelta
Mon 12/2912:15 pmBZN - ONT
1 stop4h 57mDelta
Deal found 12/21$329
This Delta deal was found by Cheapflights users on 12/21. 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 12/285:10 pmONT - BZN
1 stop5h 37mDelta
Mon 12/2912:15 pmBZN - ONT
1 stop4h 57mDelta
Deal found 12/21$359
This Delta deal was found by Cheapflights users on 12/21. 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 12/235:10 pmONT - BZN
1 stop5h 37mDelta
Tue 12/3012:15 pmBZN - ONT
1 stop4h 57mDelta
Deal found 12/21$399
This Delta deal was found by Cheapflights users on 12/21. 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 12/285:10 pmONT - BZN
1 stop5h 37mDelta
Tue 12/3012:15 pmBZN - ONT
1 stop4h 57mDelta
Deal found 12/21$429
This United Airlines deal was found by Cheapflights users on 12/21. 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 12/295:05 amONT - BZN
1 stop7h 32mUnited Airlines
Thu 1/16:15 amBZN - ONT
1 stop7h 23mUnited Airlines
Deal found 12/21$439
This United Airlines deal was found by Cheapflights users on 12/21. 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 12/295:05 amONT - BZN
1 stop7h 32mUnited Airlines
Wed 12/314:26 pmBZN - ONT
1 stop7h 07mUnited Airlines
Deal found 12/21$449
This Delta deal was found by Cheapflights users on 12/21. 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 12/236:00 amONT - BZN
1 stop4h 17mDelta
Thu 1/111:53 amBZN - ONT
1 stop6h 15mDelta
Deal found 12/21$465
This United Airlines deal was found by Cheapflights users on 12/22. 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.
Wed 12/245:05 amONT - COD
1 stop6h 59mUnited Airlines
Thu 1/11:43 pmCOD - ONT
1 stop8h 24mUnited Airlines
Deal found 12/22$469
This United Airlines deal was found by Cheapflights users on 12/21. 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 12/235:05 amONT - BZN
1 stop7h 32mUnited Airlines
Wed 12/314:26 pmBZN - ONT
1 stop7h 07mUnited Airlines
Deal found 12/21$469
This United Airlines deal was found by Cheapflights users on 12/22. 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.
Thu 12/2510:42 amONT - COD
2 stops10h 52mUnited Airlines
Thu 1/11:43 pmCOD - ONT
1 stop8h 24mUnited Airlines
Deal found 12/22$474
This Kiwi.com deal was found by Cheapflights users on 12/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/306:00 amONT - FCA
1 stop10h 05mMultiple Airlines
Sat 1/35:55 pmFCA - ONT
1 stop6h 26mMultiple Airlines
Deal found 12/20$487
This United Airlines deal was found by Cheapflights users on 12/21. 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 12/295:05 amONT - BZN
1 stop7h 32mUnited Airlines
Tue 12/304:25 pmBZN - ONT
1 stop5h 42mUnited Airlines
Deal found 12/21$490

Find flight deals from Ontario to Montana

Keep the following information in mind while searching for Ontario to Montana flight deals. Data was last updated December 23, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$180
(Kiwi.com)

One-way from

$82
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$379
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. 9% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 23, 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

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Thu 1/22

11:04 am-8:16 pm

1 stop8h 12m

Kalispell Glacier Park

Sun 1/25

9:06 pm-12:10 pm

1 stop16h 04m

$180

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Thu 2/5

5:10 pm-11:17 pm

1 stop5h 07m

Bozeman Gallatin Field

Mon 2/9

3:00 pm-10:44 pm

1 stop8h 44m

$206

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 2/20

5:00 pm-11:15 pm

1 stop5h 15m

Bozeman Gallatin Field

Tue 2/24

7:30 am-1:54 pm

1 stop7h 24m

$206

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Tue 1/27

4:03 pm-11:56 pm

1 stop6h 53m

Bozeman Gallatin Field

Sat 1/31

1:46 pm-8:10 pm

1 stop7h 24m

$210

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 1/23

4:03 pm-2:09 pm

1 stop21h 06m

Bozeman Gallatin Field

Tue 1/27

7:20 am-3:08 pm

1 stop8h 48m

$217

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Tue 1/27

11:53 am-11:58 pm

1 stop11h 05m

Kalispell Glacier Park

Sat 1/31

7:46 pm-10:59 am

1 stop16h 13m

$224

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Thu 5/14

5:05 pm-11:59 pm

1 stop5h 54m

Bozeman Gallatin Field

Thu 5/21

5:45 am-9:01 am

1 stop4h 16m

$227

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Sun 5/24

5:05 pm-9:59 pm

1 stop3h 54m

Bozeman Gallatin Field

Thu 5/28

8:30 am-12:49 pm

1 stop5h 19m

$227

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Sat 1/17

4:03 pm-11:56 pm

1 stop6h 53m

Bozeman Gallatin Field

Sat 1/24

7:20 am-5:03 pm

2 stops10h 43m

$232

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Sat 1/10

6:00 am-11:35 am

1 stop4h 35m

Kalispell Glacier Park

Fri 1/16

5:54 pm-10:38 pm

1 stop5h 44m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

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 December 23, 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 December 23, 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
11,507 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,507 reviews
Alaska Airlines
8.0
Very good
11,507 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Southwest
8.0
Very good
4,253 reviews
Alaska Airlines
8.0
Very good
11,507 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,014 reviews
Alaska Airlines
8.0
Very good
11,507 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,104 reviews
Alaska Airlines
8.0
Very good
11,507 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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 5h 07m. Delta provides one of the quickest options available for as low as $206. Airlines will cover a distance of 877 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 - Billings Logan Intl 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.

See more FAQs

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Alternative routes for Ontario to Montana

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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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$178Average$387FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$189Average$388FlexibilityNo cancel feeOn-time69%
DeltaCheapest$198Average$360FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$211Average$366FlexibilityNo cancel feeOn-time63%

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