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$115+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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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 July 3, 2025.

Round-trip from

$199
(Mytrip)

One-way from

$115
(ezTravel 易遊網)

Popular in

November

Cheapest in

January

Average price

$415
From Ontario to Montana
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One-way flight from Ontario to Montana
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Highest demand for flights based on searches. 10% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 3, 2025.

This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/145:21 pmONT - MSO
1 stop17h 33mFrontier
Mon 8/1812:40 pmMSO - ONT
1 stop12h 10mFrontier
Deal found 7/2$199
This Alaska Airlines deal was found by Cheapflights users on 7/2. 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 8/44:00 pmONT - BZN
1 stop6h 59mAlaska Airlines
Mon 8/255:22 amBZN - ONT
1 stop5h 04mAlaska Airlines
Deal found 7/2$236
This Delta deal was found by Cheapflights users on 7/2. 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 7/312:14 pmONT - BZN
1 stop7h 31mDelta
Tue 8/57:10 amBZN - ONT
1 stop7h 24mDelta
Deal found 7/2$239
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 7/284:00 pmONT - MSO
1 stop7h 19mAlaska Airlines
Mon 8/46:36 pmMSO - ONT
1 stop6h 39mAlaska Airlines
Deal found 7/1$240
This Hawaiian Airlines deal was found by Cheapflights users on 6/30. 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.
Wed 7/304:00 pmONT - BZN
1 stop6h 59mHawaiian Airlines
Sun 8/37:25 pmBZN - ONT
1 stop5h 50mHawaiian Airlines
Deal found 6/30$240
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 8/512:00 pmONT - FCA
1 stop6h 20mAlaska Airlines
Thu 8/78:00 pmFCA - ONT
1 stop5h 15mAlaska Airlines
Deal found 7/1$240
This Delta deal was found by Cheapflights users on 7/2. 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 8/45:09 pmONT - MSO
1 stop6h 15mDelta
Fri 8/85:30 amMSO - ONT
1 stop4h 17mDelta
Deal found 7/2$241
This Delta deal was found by Cheapflights users on 7/3. 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 7/305:09 pmONT - FCA
1 stop6h 16mDelta
Wed 8/65:30 amFCA - ONT
1 stop4h 17mDelta
Deal found 7/3$241
This Delta deal was found by Cheapflights users on 6/30. 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 7/285:09 pmONT - BIL
1 stop5h 58mDelta
Fri 8/15:20 amBIL - ONT
1 stop4h 27mDelta
Deal found 6/30$241
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/811:59 pmONT - BZN
1 stop9h 39mAmerican Airlines
Fri 8/157:25 amBZN - ONT
2 stops11h 27mAmerican Airlines
Deal found 7/1$246
This Trip.com deal was found by Cheapflights users on 7/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/76:00 amONT - BZN
1 stop6h 46mMultiple Airlines
Sun 8/102:36 pmBZN - ONT
1 stop7h 16mMultiple Airlines
Deal found 7/2$252
This Hawaiian Airlines deal was found by Cheapflights users on 6/30. 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 9/207:10 amONT - MSO
1 stop5h 24mHawaiian Airlines
Wed 9/245:45 amMSO - ONT
1 stop4h 41mHawaiian Airlines
Deal found 6/30$253

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 July 3, 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

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 8/14

5:21 pm-11:54 am

1 stop17h 33m

Missoula Johnson-Bell Field

Mon 8/18

12:40 pm-11:50 pm

1 stop12h 10m

$199

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Mon 8/4

4:00 pm-11:59 pm

1 stop6h 59m

Bozeman Gallatin Field

Mon 8/25

5:22 am-9:26 am

1 stop5h 04m

$236

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Thu 7/31

5:09 pm-11:59 pm

1 stop5h 50m

Bozeman Gallatin Field

Tue 8/5

5:30 am-8:47 am

1 stop4h 17m

$239

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Wed 7/30

7:30 am-1:06 pm

1 stop4h 36m

Bozeman Gallatin Field

Sun 8/3

7:25 pm-12:15 am

1 stop5h 50m

$240

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Mon 7/28

4:00 pm-12:19 am

1 stop7h 19m

Missoula Johnson-Bell Field

Mon 8/4

6:36 pm-12:15 am

1 stop6h 39m

$240

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Tue 8/5

12:00 pm-7:20 pm

1 stop6h 20m

Kalispell Glacier Park

Thu 8/7

8:00 pm-12:15 am

1 stop5h 15m

$240

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 7/25

5:05 pm-11:50 pm

1 stop5h 45m

Bozeman Gallatin Field

Tue 7/29

5:00 am-8:55 am

1 stop4h 55m

$241

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Mon 8/4

9:44 am-5:44 pm

1 stop7h 00m

Missoula Johnson-Bell Field

Fri 8/8

5:30 am-8:47 am

1 stop4h 17m

$241

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Wed 7/30

5:09 pm-12:25 am

1 stop6h 16m

Kalispell Glacier Park

Wed 8/6

5:30 am-8:47 am

1 stop4h 17m

$241

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Mon 7/28

5:09 pm-12:07 am

1 stop5h 58m

Billings Logan Intl

Fri 8/1

5:20 am-8:47 am

1 stop4h 27m

$241

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 51 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, 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 May is currently the most expensive (average of $478). 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 July 3, 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.

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 July 3, 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
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,270 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,970 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,545 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,845 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 $115 on Hawaiian Airlines. Other airlines that offer cheap prices include Delta from $121 and Frontier from $135 one-way.

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

    When deciding which route to take from Ontario to Montana consider Ontario - Kalispell Glacier Park, Ontario - Bozeman Gallatin Field 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, 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 May is currently the most expensive (average of $478). 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$181Average$284FlexibilityNo cancel feeOn-time62%
DeltaCheapest$198Average$359FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$219Average$373FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$224Average$435FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$255Average$389FlexibilityNo cancel feeOn-time63%

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