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$123+ 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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
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 March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$258
(Alaska Airlines)

One-way from

$123
(Trip.com)

Popular in

November

Cheapest in

January

Average price

$414
Provider with most accurate pricing for Los Angeles-Bozeman Gallatin Field flight deals.
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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. 13% potential increase in price ($64 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 March 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 March 26, 2025.

This Alaska Airlines deal was found by Cheapflights users on 3/25. 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 6/46:00 amONT - MSO
1 stop7h 21mAlaska Airlines
Tue 6/105:45 amMSO - ONT
1 stop4h 32mAlaska Airlines
Deal found 3/25$258
This Hawaiian Airlines deal was found by Cheapflights users on 3/25. 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.
Thu 5/154:45 pmONT - FCA
1 stop6h 13mHawaiian Airlines
Tue 5/206:32 pmFCA - ONT
1 stop5h 14mHawaiian Airlines
Deal found 3/25$273
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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 4/2311:46 amONT - BZN
1 stop11h 08mAlaska Airlines
Mon 4/282:54 pmBZN - ONT
1 stop10h 05mAlaska Airlines
Deal found 3/25$274
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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 5/1311:46 amONT - BIL
1 stop11h 13mAlaska Airlines
Sat 5/173:45 pmBIL - ONT
1 stop9h 12mAlaska Airlines
Deal found 3/25$274
This Delta deal was found by Cheapflights users on 3/25. 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 6/109:40 amONT - MSO
1 stop7h 04mDelta
Mon 6/165:30 amMSO - ONT
1 stop4h 20mDelta
Deal found 3/25$275
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/46:00 amONT - BZN
1 stop3h 49mDelta
Mon 6/95:30 amBZN - ONT
1 stop4h 20mDelta
Deal found 3/26$275
This Hawaiian Airlines deal was found by Cheapflights users on 3/25. 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.
Thu 5/111:46 amONT - MSO
1 stop5h 08mHawaiian Airlines
Sun 5/46:42 amMSO - ONT
1 stop5h 09mHawaiian Airlines
Deal found 3/25$284
This Delta deal was found by Cheapflights users on 3/25. 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 5/156:00 amONT - FCA
1 stop4h 13mDelta
Mon 5/265:25 amFCA - ONT
1 stop4h 46mDelta
Deal found 3/25$289
This Alaska Airlines deal was found by Cheapflights users on 3/25. 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 6/106:00 amONT - FCA
1 stop10h 52mAlaska Airlines
Tue 6/176:33 amFCA - ONT
1 stop5h 32mAlaska Airlines
Deal found 3/25$290
This Delta deal was found by Cheapflights users on 3/25. 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 6/56:00 amONT - BIL
1 stop3h 50mDelta
Mon 6/95:30 amBIL - ONT
1 stop4h 20mDelta
Deal found 3/25$291
This United Airlines deal was found by Cheapflights users on 3/25. 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.
Sun 7/135:05 amONT - WYS
1 stop7h 15mUnited Airlines
Thu 7/172:02 pmWYS - ONT
1 stop7h 52mUnited Airlines
Deal found 3/25$296
This Southwest deal was found by Cheapflights users on 3/25. 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.
Wed 4/235:30 amONT - BZN
2 stops6h 00mSouthwest
Mon 4/2810:30 amBZN - ONT
2 stops8h 05mSouthwest
Deal found 3/25$320

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 March 26, 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

Wed 6/4

6:00 am-2:21 pm

1 stop7h 21m

Missoula Johnson-Bell Field

Tue 6/10

5:45 am-9:17 am

1 stop4h 32m

$258

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Thu 5/15

4:45 pm-11:58 pm

1 stop6h 13m

Kalispell Glacier Park

Tue 5/20

6:32 pm-10:46 pm

1 stop5h 14m

$273

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 5/13

11:46 am-11:59 pm

1 stop11h 13m

Billings Logan Intl

Sat 5/17

3:45 pm-11:57 pm

1 stop9h 12m

$274

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 6/10

9:40 am-5:44 pm

1 stop7h 04m

Missoula Johnson-Bell Field

Mon 6/16

5:30 am-8:50 am

1 stop4h 20m

$275

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 5/2

5:15 pm-12:07 am

1 stop5h 52m

Bozeman Gallatin Field

Wed 5/7

11:30 am-4:17 pm

1 stop5h 47m

$275

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 5/1

11:46 am-5:54 pm

1 stop5h 08m

Missoula Johnson-Bell Field

Sun 5/4

6:42 am-10:51 am

1 stop5h 09m

$284

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Thu 5/15

6:00 am-11:13 am

1 stop4h 13m

Kalispell Glacier Park

Fri 5/23

5:25 am-9:11 am

1 stop4h 46m

$289

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Tue 5/20

5:55 pm-12:21 am

1 stop5h 26m

Bozeman Gallatin Field

Sun 5/25

5:32 am-9:17 am

1 stop4h 45m

$290

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Tue 6/10

6:00 am-5:52 pm

1 stop10h 52m

Kalispell Glacier Park

Tue 6/17

6:33 am-11:05 am

1 stop5h 32m

$290

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 6/5

6:00 am-10:50 am

1 stop3h 50m

Billings Logan Intl

Mon 6/9

5:30 am-8:50 am

1 stop4h 20m

$291

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

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 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 March 26, 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 March 26, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta 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
4,274 reviews

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.6

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.1
Very good
4,274 reviews
Southwest
8.1
Very good
4,274 reviews

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.6

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Alaska Airlines
8.0
Very good
9,789 reviews
Southwest
8.1
Very good
4,274 reviews

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.6

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,891 reviews
Southwest
8.1
Very good
4,274 reviews

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.6

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Hawaiian Airlines
7.9
Good
2,330 reviews
Southwest
8.1
Very good
4,274 reviews

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.6

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,608 reviews
Southwest
8.1
Very good
4,274 reviews

Overall

8.1

Comfort

8.1

Food

7.1

Crew

8.6

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 $123 on Hawaiian Airlines. Other airlines that offer cheap prices include Alaska Airlines from $126 and Delta from $138 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 - 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 March 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$168Average$254FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$219Average$401FlexibilityNo cancel feeOn-time75%
DeltaCheapest$229Average$417FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$250Average$463FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$274Average$395FlexibilityNo cancel feeOn-time63%
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