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$106+ 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
feb. 20 — feb. 271
vie. 2/20
vie. 2/27
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 enero 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
jue. 1/2911:04 am
ONT
-
FCA
1 stop8h 12m
Multiple Airlines
dom. 2/19:06 pm
FCA
-
ONT
1 stop16h 04m
Multiple Airlines
Deal found 1/20$185
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/76:00 am
ONT
-
BZN
1 stop7h 42m
United Airlines
mar. 2/104:16 pm
BZN
-
ONT
1 stop5h 42m
United Airlines
Deal found 1/20$211
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/155:05 pm
ONT
-
BZN
1 stop5h 54m
Delta
mié. 7/225:45 am
BZN
-
ONT
1 stop4h 16m
Delta
Deal found 1/20$217
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/246:00 am
ONT
-
FCA
1 stop4h 26m
Delta
sáb. 4/46:45 pm
FCA
-
ONT
1 stop5h 03m
Delta
Deal found 1/20$217
This Delta deal was found by Cheapflights users on 1/19. 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.
mié. 4/85:09 pm
ONT
-
BIL
1 stop4h 20m
Delta
sáb. 4/116:21 pm
BIL
-
ONT
1 stop5h 27m
Delta
Deal found 1/19$217
This Delta deal was found by Cheapflights users on 1/19. 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.
mar. 2/246:00 am
ONT
-
HLN
1 stop5h 25m
Delta
sáb. 2/281:10 pm
HLN
-
ONT
2 stops10h 27m
Delta
Deal found 1/19$222
This Alaska Airlines deal was found by Cheapflights users on 1/19. 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.
jue. 2/264:02 pm
ONT
-
BZN
1 stop6h 54m
Alaska Airlines
mar. 3/33:02 pm
BZN
-
ONT
1 stop8h 42m
Alaska Airlines
Deal found 1/19$231
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/217:37 pm
ONT
-
BZN
1 stop18h 45m
Alaska Airlines
mar. 2/241:48 pm
BZN
-
ONT
1 stop6h 26m
Alaska Airlines
Deal found 1/20$233
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/86:00 am
ONT
-
FCA
1 stop4h 26m
Delta
sáb. 4/46:45 pm
FCA
-
ONT
1 stop5h 03m
Delta
Deal found 1/20$233
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/34:02 pm
ONT
-
BZN
1 stop6h 54m
Alaska Airlines
sáb. 3/73:02 pm
BZN
-
ONT
1 stop9h 30m
Alaska Airlines
Deal found 1/20$238
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/175:05 pm
ONT
-
BZN
1 stop5h 54m
Delta
lun. 7/205:45 am
BZN
-
ONT
1 stop4h 16m
Delta
Deal found 1/20$239
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/37:00 am
ONT
-
FCA
1 stop5h 14m
Alaska Airlines
jue. 2/57:46 pm
FCA
-
ONT
1 stop5h 10m
Alaska Airlines
Deal found 1/20$239

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 enero 21, 2026.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$211
(United Airlines)

One-way from

$106
(Alaska Airlines)

Popular in

March

Cheapest in

October

Average price

$326
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. 7% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 enero 21, 2026.
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

sáb. 2/28

4:02 pm-11:56 pm

1 stop6h 54m

Bozeman Gallatin Field

mar. 3/3

3:02 pm-10:44 pm

1 stop8h 42m

$211

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

sáb. 2/7

6:00 am-2:42 pm

1 stop7h 42m

Bozeman Gallatin Field

mar. 2/10

4:16 pm-8:58 pm

1 stop5h 42m

$211

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

mié. 2/25

4:02 pm-11:56 pm

1 stop6h 54m

Bozeman Gallatin Field

mar. 3/3

3:02 pm-10:44 pm

1 stop8h 42m

$211

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

mar. 2/24

6:14 am-2:08 pm

1 stop6h 54m

Bozeman Gallatin Field

mar. 3/3

3:02 pm-10:44 pm

1 stop8h 42m

$211

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

mié. 7/15

5:05 pm-11:59 pm

1 stop5h 54m

Bozeman Gallatin Field

lun. 7/20

5:45 am-9:01 am

1 stop4h 16m

$217

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

mié. 7/15

5:05 pm-11:59 pm

1 stop5h 54m

Bozeman Gallatin Field

mar. 7/21

5:45 am-9:01 am

1 stop4h 16m

$217

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

sáb. 7/18

5:05 pm-9:59 pm

1 stop3h 54m

Bozeman Gallatin Field

mié. 7/22

5:45 am-9:01 am

1 stop4h 16m

$217

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

mar. 6/16

5:05 pm-11:59 pm

1 stop5h 54m

Bozeman Gallatin Field

dom. 6/21

5:45 am-9:01 am

1 stop4h 16m

$217

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

mié. 2/4

5:10 pm-11:17 pm

1 stop5h 07m

Bozeman Gallatin Field

sáb. 2/28

3:05 pm-10:37 pm

1 stop8h 32m

$217

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

jue. 5/14

5:05 pm-11:59 pm

1 stop5h 54m

Bozeman Gallatin Field

jue. 5/21

5:45 am-9:01 am

1 stop4h 16m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

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.

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 enero 21, 2026.
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
11,775 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,775 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,088 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,191 reviews
Alaska Airlines
8.0
Very good
11,775 reviews

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 54m. 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 - Missoula Johnson-Bell Field 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 $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.

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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 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 enero 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$178Average$421FlexibilityNo cancel feeOn-time75%
DeltaCheapest$184Average$364FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$189Average$345FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$211Average$366FlexibilityNo cancel feeOn-time63%

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