Montana

$76+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
Jun 9 — Jun 161
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.

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 May 10, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/6. 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.
Wed 7/83:40 pm
ONT
-
BZN
1 stop23h 18m
Multiple Airlines
Sun 7/124:48 pm
BZN
-
ONT
1 stop28h 05m
Multiple Airlines
Deal found 5/6$226
This SmartFares deal was found by Cheapflights users on 5/5. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/62:05 pm
ONT
-
BZN
1 stop8h 14m
Alaska Airlines
Sat 8/156:03 am
BZN
-
ONT
1 stop6h 11m
Alaska Airlines
Deal found 5/5$249
This Trip.com deal was found by Cheapflights users on 5/10. 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.
Fri 6/54:03 pm
ONT
-
BZN
1 stop5h 39m
Alaska Airlines
Thu 6/116:03 am
BZN
-
ONT
1 stop8h 06m
Alaska Airlines
Deal found 5/10$256
This Alaska Airlines deal was found by Cheapflights users on 5/8. 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 8/12:05 pm
ONT
-
BZN
1 stop8h 14m
Alaska Airlines
Sat 8/86:03 am
BZN
-
ONT
1 stop6h 11m
Alaska Airlines
Deal found 5/8$271
This Delta deal was found by Cheapflights users on 5/7. 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 8/139:43 am
ONT
-
BZN
1 stop4h 26m
Delta
Thu 8/137:39 pm
BZN
-
ONT
1 stop4h 55m
Delta
Deal found 5/7$272
This Delta deal was found by Cheapflights users on 5/10. 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.
Fri 5/296:45 am
ONT
-
BZN
1 stop7h 32m
Delta
Mon 6/18:00 am
BZN
-
ONT
1 stop5h 33m
Delta
Deal found 5/10$273
This Southwest deal was found by Cheapflights users on 5/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/104:40 pm
ONT
-
BZN
1 stop7h 30m
Southwest
Mon 7/137:15 pm
BZN
-
ONT
1 stop5h 15m
Southwest
Deal found 5/7$276
This Delta deal was found by Cheapflights users on 5/6. 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.
Fri 5/296:00 am
ONT
-
FCA
1 stop4h 25m
Delta
Tue 6/25:13 am
FCA
-
ONT
1 stop4h 40m
Delta
Deal found 5/6$277
This Trip.com deal was found by Cheapflights users on 5/6. 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.
Mon 8/247:10 am
ONT
-
BZN
1 stop5h 14m
Alaska Airlines
Sat 8/293:32 pm
BZN
-
ONT
1 stop5h 52m
Alaska Airlines
Deal found 5/6$282
This American Airlines deal was found by Cheapflights users on 5/6. 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 5/297:12 pm
ONT
-
FCA
2 stops15h 23m
American Airlines
Tue 6/23:50 pm
FCA
-
ONT
1 stop7h 48m
American Airlines
Deal found 5/6$282
This United Airlines deal was found by Cheapflights users on 5/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:18 pm
ONT
-
BZN
1 stop7h 01m
United Airlines
Mon 8/314:32 pm
BZN
-
ONT
1 stop5h 21m
United Airlines
Deal found 5/8$286
This Alaska Airlines deal was found by Cheapflights users on 5/7. 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 9/297:10 am
ONT
-
BZN
1 stop5h 14m
Alaska Airlines
Wed 9/303:40 pm
BZN
-
ONT
1 stop5h 44m
Alaska Airlines
Deal found 5/7$294

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 May 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$226
(Kiwi.com)

One-way from

$76
(Trip.com)

Popular in

May

Cheapest in

January

Average price

$409
Provider with most accurate pricing for Los Angeles-Bozeman Gallatin Field flight deals.
Provider most trusted by Cheapflights users for Los Angeles-Bozeman Gallatin Field flights.
From Ontario to Montana
One-way flight from Ontario to Montana
Highest demand for flights based on searches. 2% potential increase in price ($10 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Average for round-trip flights in May 2026

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 May 10, 2026.
Use the filters below to find and compare flights from Ontario to Montana that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Wed 7/29

6:35 pm-12:45 am

1 stop5h 10m

Bozeman Gallatin Field

Mon 8/3

7:15 pm-11:30 pm

1 stop5h 15m

$271

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Mon 8/3

12:55 pm-6:39 pm

1 stop4h 44m

Bozeman Gallatin Field

Mon 8/10

6:00 am-8:48 am

1 stop3h 48m

$271

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Tue 8/4

2:05 pm-11:19 pm

1 stop8h 14m

Bozeman Gallatin Field

Tue 8/11

6:03 am-1:09 pm

1 stop8h 06m

$271

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 8/7

5:06 pm-12:04 am

1 stop5h 58m

Bozeman Gallatin Field

Mon 8/10

6:00 am-8:48 am

1 stop3h 48m

$271

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Tue 6/2

4:57 pm-11:59 pm

1 stop6h 02m

Bozeman Gallatin Field

Sat 6/6

8:00 am-12:33 pm

1 stop5h 33m

$271

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Mon 8/3

2:05 pm-11:19 pm

1 stop8h 14m

Bozeman Gallatin Field

Sat 8/8

6:03 am-11:14 am

1 stop6h 11m

$294

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Tue 8/11

6:02 am-2:09 pm

1 stop7h 07m

Bozeman Gallatin Field

Mon 8/17

6:03 am-1:09 pm

1 stop8h 06m

$294

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 9/24

3:12 pm-10:59 pm

1 stop6h 47m

Missoula Johnson-Bell Field

Tue 9/29

7:00 am-2:18 pm

1 stop8h 18m

$301

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 9/24

6:00 am-12:33 pm

1 stop5h 33m

Missoula Johnson-Bell Field

Mon 9/28

6:10 pm-11:44 pm

1 stop6h 34m

$301

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 9/22

3:12 pm-10:59 pm

1 stop6h 47m

Missoula Johnson-Bell Field

Tue 9/29

4:13 pm-11:24 pm

1 stop8h 11m

$301

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/10

Showing 1-10 of 60 resultsSorted by cheapest first
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, July is the cheapest month in which you can book a flight from Ontario to Montana (average of $120). Flying from Ontario to Montana in March is currently the most expensive (average of $339). 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.

How much does it cost to fly round-trip from Ontario to Montana?

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 May 10, 2026.
See what other customers who have flown with Alaska Airlines,Southwest, andDelta 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.

Food

7.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Food

7.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Food

7.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Food

7.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

Food

7.0

Crew

8.5

Entertainment

7.0

Comfort

7.8

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

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 44m. Alaska Airlines provides one of the quickest options available for as low as $271. 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 cheapest airlines to fly from Ontario to Montana one-way?

    One-way options have recently been found by users for as low as $94 on Alaska Airlines. Other airlines that offer cheap prices include Delta from $108 and United Airlines from $150 one-way.

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

  • 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, July is the cheapest month in which you can book a flight from Ontario to Montana (average of $120). Flying from Ontario to Montana in March is currently the most expensive (average of $339). 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.

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 May 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$178Average$399FlexibilityNo cancel feeOn-time75%
DeltaCheapest$184Average$387FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$189Average$415FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$211Average$398FlexibilityNo 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.