HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Montana

$94+ 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 12/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Montana with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 October 23, 2025.

This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:00 amONT - BZN
1 stop7h 08mAlaska Airlines
Sat 11/158:00 amBZN - ONT
1 stop8h 17mAlaska Airlines
Deal found 10/22$189
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/64:35 pmONT - BZN
1 stop6h 29mDelta
Mon 11/106:34 pmBZN - ONT
1 stop6h 18mDelta
Deal found 10/22$217
This Cheapflightsfares deal was found by Cheapflights users on 10/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:10 amONT - FCA
1 stop5h 10mAlaska Airlines
Tue 1/612:58 pmFCA - ONT
1 stop5h 13mAlaska Airlines
Deal found 10/21$236
This KAYAK deal was found by Cheapflights users on 10/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/286:00 amONT - BZN
1 stop7h 08mAlaska Airlines
Fri 10/313:02 pmBZN - ONT
1 stop6h 51mAlaska Airlines
Deal found 10/21$238
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:00 amONT - FCA
1 stop5h 24mAlaska Airlines
Mon 11/106:33 amFCA - ONT
1 stop5h 32mAlaska Airlines
Deal found 10/21$238
This Delta deal was found by Cheapflights users on 10/23. 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 11/136:45 amONT - BZN
1 stop6h 35mDelta
Sun 11/163:00 pmBZN - ONT
1 stop8h 55mDelta
Deal found 10/23$239
This Delta deal was found by Cheapflights users on 10/21. 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 11/44:35 pmONT - FCA
1 stop5h 34mDelta
Sat 11/85:20 amFCA - ONT
1 stop4h 45mDelta
Deal found 10/21$239
This Trip.com deal was found by Cheapflights users on 10/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:00 amONT - HLN
1 stop10h 51mHawaiian Airlines
Sat 12/136:28 pmHLN - ONT
1 stop17h 51mHawaiian Airlines
Deal found 10/22$240
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:00 amONT - BZN
1 stop3h 45mDelta
Tue 12/23:00 pmBZN - ONT
1 stop8h 47mDelta
Deal found 10/22$243
This lol.travel deal was found by Cheapflights users on 10/22. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:20 amONT - BIL
1 stop5h 00mAlaska Airlines
Wed 11/196:00 amBIL - ONT
1 stop6h 05mAlaska Airlines
Deal found 10/22$248
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/144:11 pmONT - MSO
1 stop19h 08mAlaska Airlines
Mon 11/176:32 amMSO - ONT
1 stop5h 33mAlaska Airlines
Deal found 10/22$254
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/17:20 amONT - BZN
1 stop4h 42mAlaska Airlines
Mon 11/33:02 pmBZN - ONT
1 stop6h 51mAlaska Airlines
Deal found 10/21$258

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 October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$189
(Alaska Airlines)

One-way from

$94
(Alaska Airlines)

Popular in

November

Cheapest in

January

Average price

$361
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. 6% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 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

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Wed 11/12

6:00 am-2:08 pm

1 stop7h 08m

Bozeman Gallatin Field

Sat 11/15

8:00 am-3:17 pm

1 stop8h 17m

$189

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Tue 11/11

4:49 pm-12:10 am

1 stop6h 21m

Bozeman Gallatin Field

Fri 11/14

3:00 pm-10:55 pm

1 stop8h 55m

$217

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Mon 11/10

6:00 am-10:45 am

1 stop3h 45m

Bozeman Gallatin Field

Fri 11/14

6:34 pm-11:52 pm

1 stop6h 18m

$217

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Thu 11/6

6:00 am-10:44 am

1 stop3h 44m

Bozeman Gallatin Field

Mon 11/10

6:34 pm-11:52 pm

1 stop6h 18m

$217

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Thu 11/13

6:45 am-2:20 pm

1 stop6h 35m

Bozeman Gallatin Field

Sun 11/16

3:00 pm-10:55 pm

1 stop8h 55m

$217

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 1/2

5:10 pm-11:47 pm

1 stop5h 37m

Bozeman Gallatin Field

Wed 1/7

3:00 pm-10:38 pm

1 stop8h 38m

$217

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Thu 1/8

6:00 am-2:09 pm

1 stop7h 09m

Bozeman Gallatin Field

Tue 1/13

7:25 am-3:08 pm

1 stop8h 43m

$220

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Wed 12/31

7:00 am-1:36 pm

1 stop5h 36m

Kalispell Glacier Park

Sat 1/10

1:54 pm-8:36 pm

1 stop7h 42m

$238

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Wed 11/5

6:00 am-12:24 pm

1 stop5h 24m

Kalispell Glacier Park

Mon 11/10

6:33 am-11:05 am

1 stop5h 32m

$238

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Tue 11/4

4:35 pm-11:09 pm

1 stop5h 34m

Kalispell Glacier Park

Sat 11/8

5:20 am-9:05 am

1 stop4h 45m

$239

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 60 results
1
2
3
...
6

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 $193). 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 October 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 October 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
11,155 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
11,155 reviews
Alaska Airlines
8.0
Very good
11,155 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
4,237 reviews
Alaska Airlines
8.0
Very good
11,155 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
7,981 reviews
Alaska Airlines
8.0
Very good
11,155 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
8,991 reviews
Alaska Airlines
8.0
Very good
11,155 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 6h 21m. Alaska Airlines provides one of the quickest options available for as low as $217. 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 - Billings Logan Intl or Ontario - Kalispell Glacier Park 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 $193). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Montana

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to John F Kennedy Intl flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Seattle flights
Los Angeles to Newark flights
Los Angeles to San Francisco flights
San Francisco to Los Angeles flights
Los Angeles to Dallas/Fort Worth flights
Los Angeles to LaGuardia flights
San Francisco to Las Vegas flights
San Francisco to Newark flights
Los Angeles to Honolulu flights
San Francisco to Santa Ana flights
San Francisco to Dallas/Fort Worth flights
Los Angeles to Las Vegas flights
Los Angeles to O'Hare Intl flights
Ontario to Seattle flights
San Francisco to Honolulu flights
San Francisco to Ontario flights
San Francisco to LaGuardia flights
Los Angeles to Miami flights
Los Angeles to Fort Lauderdale flights
Santa Ana to San Francisco flights
Burbank to Las Vegas flights
San Francisco to Seattle flights
Los Angeles to Boston flights
San Francisco to O'Hare Intl flights
San Jose to Los Angeles flights
Los Angeles to Orlando flights
Ontario to San Francisco flights
Los Angeles to San Jose flights
Los Angeles to Denver flights
San Diego to John F Kennedy Intl flights
Santa Ana to Seattle flights
Los Angeles to Reagan-National flights
Ontario to Las Vegas flights
Los Angeles to Portland flights
San Jose to Las Vegas flights
Los Angeles to Sky Harbor Intl flights
Los Angeles to Hobby flights
San Francisco to Orlando flights
Los Angeles to Austin flights
Santa Ana to Las Vegas flights
San Francisco to Sky Harbor Intl flights
Los Angeles to Kahului flights
San Diego to Seattle flights
Los Angeles to Baltimore flights
Los Angeles to Dulles Intl flights
San Diego to Newark flights
Ontario to John F Kennedy Intl flights
San Jose to Seattle flights

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 October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$178Average$375FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$189Average$396FlexibilityNo cancel feeOn-time69%
DeltaCheapest$198Average$343FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$236Average$368FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.