Montana

$82+ 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 6/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BZN
mai 23 — mai 301
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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 april 23, 2026.

This Expedia deal was found by Cheapflights users on 4/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lø. 5/166:00 am
ONT
-
MSO
1 stop5h 16m
Alaska Airlines
lø. 5/232:03 pm
MSO
-
ONT
1 stop5h 59m
Alaska Airlines
Deal found 4/20$183
This Southwest deal was found by Cheapflights users on 4/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 6/24:30 pm
ONT
-
BZN
1 stop6h 45m
Southwest
ti. 6/97:05 pm
BZN
-
ONT
1 stop4h 40m
Southwest
Deal found 4/22$213
This Delta deal was found by Cheapflights users on 4/22. 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.
lø. 5/306:45 am
ONT
-
BZN
1 stop7h 32m
Delta
lø. 6/68:00 am
BZN
-
ONT
1 stop5h 33m
Delta
Deal found 4/22$217
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sø. 5/243:30 pm
ONT
-
FCA
1 stop17h 16m
Multiple Airlines
ma. 6/110:36 am
FCA
-
ONT
1 stop5h 33m
Multiple Airlines
Deal found 4/21$226
This Delta deal was found by Cheapflights users on 4/21. 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.
fr. 8/146:00 am
ONT
-
BZN
1 stop3h 40m
Delta
ma. 8/175:45 am
BZN
-
ONT
1 stop4h 16m
Delta
Deal found 4/21$233
This Delta deal was found by Cheapflights users on 4/21. 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.
lø. 8/81:42 pm
ONT
-
BZN
1 stop8h 09m
Delta
to. 8/133:40 pm
BZN
-
ONT
1 stop8h 00m
Delta
Deal found 4/21$244
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to. 5/78:17 pm
ONT
-
MSO
2 stops22h 47m
Multiple Airlines
ma. 5/118:54 pm
MSO
-
ONT
1 stop19h 50m
Multiple Airlines
Deal found 4/22$251
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
on. 5/64:39 pm
ONT
-
BZN
1 stop15h 56m
Multiple Airlines
sø. 5/1010:25 am
BZN
-
ONT
1 stop22h 24m
Multiple Airlines
Deal found 4/21$255
This Delta deal was found by Cheapflights users on 4/21. 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.
to. 8/136:00 am
ONT
-
BZN
1 stop3h 40m
Delta
to. 8/133:40 pm
BZN
-
ONT
1 stop8h 00m
Delta
Deal found 4/21$257
This Delta deal was found by Cheapflights users on 4/22. 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.
ma. 6/14:57 pm
ONT
-
BZN
1 stop6h 02m
Delta
ti. 6/28:00 am
BZN
-
ONT
1 stop5h 33m
Delta
Deal found 4/22$258
This Delta deal was found by Cheapflights users on 4/21. 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.
lø. 8/81:42 pm
ONT
-
BZN
1 stop8h 09m
Delta
fr. 8/145:45 am
BZN
-
ONT
1 stop4h 16m
Delta
Deal found 4/21$260
This Delta deal was found by Cheapflights users on 4/20. 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.
on. 5/134:57 pm
ONT
-
BZN
1 stop6h 02m
Delta
lø. 5/164:02 pm
BZN
-
ONT
1 stop7h 32m
Delta
Deal found 4/20$268

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 april 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$183
(Expedia)

One-way from

$82
(Kiwi.com)

Popular in

May

Cheapest in

January

Average price

$326
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 ($9 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Average for round-trip flights in April 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 april 23, 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

ma. 8/24

9:55 am-2:46 pm

1 stop3h 51m

Bozeman Gallatin Field

ma. 8/31

11:30 am-4:14 pm

1 stop5h 44m

$217
Quickest round-trip

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

ma. 8/10

9:55 am-2:46 pm

1 stop3h 51m

Bozeman Gallatin Field

fr. 8/14

5:45 am-9:01 am

1 stop4h 16m

$260

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

ti. 8/25

7:10 am-1:24 pm

1 stop5h 14m

Bozeman Gallatin Field

ti. 9/8

3:40 pm-8:24 pm

1 stop5h 44m

$295

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

on. 5/27

4:03 pm-11:58 pm

1 stop6h 55m

Kalispell Glacier Park

lø. 5/30

6:15 am-11:10 am

1 stop5h 55m

$298

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

on. 5/27

4:03 pm-11:59 pm

1 stop6h 56m

Missoula Johnson-Bell Field

lø. 5/30

2:03 pm-7:02 pm

1 stop5h 59m

$315

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

fr. 5/15

11:52 am-11:21 pm

1 stop10h 29m

Bozeman Gallatin Field

lø. 5/16

6:35 pm-10:45 pm

1 stop5h 10m

$320

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

on. 8/12

9:55 am-2:46 pm

1 stop3h 51m

Bozeman Gallatin Field

on. 8/12

7:00 pm-11:44 pm

1 stop5h 44m

$322

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

lø. 5/16

5:55 pm-11:16 pm

1 stop4h 21m

Missoula Johnson-Bell Field

lø. 5/23

6:05 pm-10:45 pm

1 stop5h 40m

$329

OntarioBillings

ONT - BIL

ONTBIL

Ontario

lø. 5/30

7:00 am-2:54 pm

1 stop6h 54m

Billings Logan Intl

on. 6/3

7:21 pm-11:58 pm

1 stop5h 37m

$330

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

sø. 5/17

5:00 am-1:35 pm

1 stop7h 35m

Missoula Johnson-Bell Field

lø. 5/23

2:26 pm-8:42 pm

1 stop7h 16m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/20

Showing 1-10 of 60 resultsSorted by cheapest first
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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, 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 april 23, 2026.
See what other customers who have flown with Southwest,Alaska Airlines, 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.

Crew

8.6

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Crew

8.6

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Crew

8.6

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Crew

8.6

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Crew

8.6

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

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 3h 51m. Delta 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 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

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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.

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 april 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$178Average$399FlexibilityNo cancel feeOn-time75%
DeltaCheapest$184Average$403FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$189Average$364FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$211Average$402FlexibilityNo cancel feeOn-time63%

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