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Cheap flights from Ontario to Montana from $92

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Montana departing on 10/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Ontario to Montana

Cheap round-trip flights

Alaska Airlines Logo
11:59 am - 11:43 pmONT-MSO
10h 44m1 stop
Alaska Airlines Logo
6:32 am - 11:05 amMSO-ONT
5h 33m1 stop
$228Alaska Airlines
Find Deal
Tue, Oct 28 - Wed, Nov 5
Alaska Airlines Logo
7:10 am - 1:02 pmONT-BZN
4h 52m1 stop
Alaska Airlines Logo
6:00 am - 11:51 pmBZN-ONT
18h 51m1 stop
$228Alaska Airlines
Find Deal
Sat, Oct 18 - Wed, Oct 22
Multiple Airlines Logo
6:05 am - 9:36 pmONT-MSO
14h 31m1 stop
Multiple Airlines Logo
9:04 pm - 8:42 pmMSO-ONT
24h 38m1 stop
$235Multiple Airlines
Find Deal
Fri, Oct 10 - Mon, Oct 13
Alaska Airlines Logo
6:00 am - 12:24 pmONT-FCA
5h 24m1 stop
Alaska Airlines Logo
1:06 pm - 5:09 pmFCA-ONT
5h 03m1 stop
$236Alaska Airlines
Find Deal
Sat, Nov 1 - Wed, Nov 5
Delta Logo
11:48 am - 12:17 amONT-MSO
11h 29m2 stops
Delta Logo
1:07 pm - 10:41 pmMSO-ONT
10h 34m2 stops
$240Delta
Find Deal
Tue, Oct 28 - Wed, Nov 5
Multiple Airlines Logo
6:05 am - 9:36 pmONT-MSO
14h 31m1 stop
Multiple Airlines Logo
9:04 pm - 8:42 pmMSO-ONT
24h 38m1 stop
$251Multiple Airlines
Find Deal
Fri, Oct 10 - Mon, Oct 13
Delta Logo
4:35 pm - 12:04 amONT-BZN
6h 29m1 stop
Delta Logo
5:35 am - 9:05 amBZN-ONT
4h 30m1 stop
$258Delta
Find Deal
Thu, Oct 16 - Mon, Oct 20
Southwest Logo
4:20 pm - 12:10 amONT-BZN
6h 50m1 stop
Southwest Logo
5:30 am - 12:20 pmBZN-ONT
7h 50m2 stops
$266Southwest
Find Deal
Fri, Oct 24 - Tue, Oct 28
United Airlines Logo
9:36 am - 3:27 pmONT-FCA
4h 51m1 stop
United Airlines Logo
2:31 pm - 8:24 pmFCA-ONT
6h 53m1 stop
$285United Airlines
Find Deal
Sat, Oct 18 - Wed, Oct 22
United Airlines Logo
5:05 am - 1:35 pmONT-FCA
7h 30m1 stop
United Airlines Logo
6:15 am - 12:32 pmFCA-ONT
7h 17m1 stop
$331United Airlines
Find Deal
Thu, Dec 4 - Tue, Dec 9

Delta flights from Ontario to Montana

Our best Delta deals on Ontario to Montana flight tickets
Delta
Oct 28
ONT11:48 amOntario
11h 29m
2 stops
MSO12:17 amMissoula Johnson-Bell Field
Nov 5
MSO1:07 pmMissoula Johnson-Bell Field
10h 34m
2 stops
ONT10:41 pmOntario
$240
Find similar
Delta
Oct 16
ONT4:35 pmOntario
6h 29m
1 stop
BZN12:04 amBozeman Gallatin Field
Oct 20
BZN5:35 amBozeman Gallatin Field
4h 30m
1 stop
ONT9:05 amOntario
$258
Find similar
Delta
Nov 26
ONT6:00 amOntario
3h 45m
1 stop
BZN10:45 amBozeman Gallatin Field
Dec 2
BZN6:33 pmBozeman Gallatin Field
6h 26m
1 stop
ONT11:59 pmOntario
$261
Find similar

Alaska Airlines flights from Ontario to Montana

Our best Alaska Airlines deals on Ontario to Montana flight tickets
Alaska Airlines
Oct 18
ONT7:10 amOntario
4h 52m
1 stop
BZN1:02 pmBozeman Gallatin Field
Oct 22
BZN6:00 amBozeman Gallatin Field
18h 51m
1 stop
ONT11:51 pmOntario
$228
Find similar
Alaska Airlines
Nov 1
ONT6:00 amOntario
5h 24m
1 stop
FCA12:24 pmKalispell Glacier Park
Nov 5
FCA1:06 pmKalispell Glacier Park
5h 03m
1 stop
ONT5:09 pmOntario
$236
Find similar
Alaska Airlines
Oct 18
ONT7:10 amOntario
5h 42m
1 stop
FCA1:52 pmKalispell Glacier Park
Oct 22
FCA6:31 amKalispell Glacier Park
7h 06m
1 stop
ONT12:37 pmOntario
$254
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 24, 2025.
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

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 10/28

11:59 am-11:43 pm

1 stop10h 44m

Missoula Johnson-Bell Field

Wed 11/5

6:32 am-11:05 am

1 stop5h 33m

$228

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Sat 10/18

7:10 am-1:02 pm

1 stop4h 52m

Bozeman Gallatin Field

Wed 10/22

6:00 am-11:51 pm

1 stop18h 51m

$228

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Fri 10/10

6:05 am-9:36 pm

1 stop14h 31m

Missoula Johnson-Bell Field

Mon 10/13

9:04 pm-8:42 pm

1 stop24h 38m

$235

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Sat 11/1

6:00 am-12:24 pm

1 stop5h 24m

Kalispell Glacier Park

Wed 11/5

1:06 pm-5:09 pm

1 stop5h 03m

$236

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Tue 10/28

11:48 am-12:17 am

2 stops11h 29m

Missoula Johnson-Bell Field

Wed 11/5

1:07 pm-10:41 pm

2 stops10h 34m

$240

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Fri 10/10

6:05 am-9:36 pm

1 stop14h 31m

Missoula Johnson-Bell Field

Mon 10/13

9:04 pm-8:42 pm

1 stop24h 38m

$251

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Thu 10/16

4:35 pm-12:04 am

1 stop6h 29m

Bozeman Gallatin Field

Mon 10/20

5:35 am-9:05 am

1 stop4h 30m

$258

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 10/24

4:20 pm-12:10 am

1 stop6h 50m

Bozeman Gallatin Field

Tue 10/28

5:30 am-12:20 pm

2 stops7h 50m

$266

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Sat 10/18

9:36 am-3:27 pm

1 stop4h 51m

Kalispell Glacier Park

Wed 10/22

2:31 pm-8:24 pm

1 stop6h 53m

$285

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Thu 12/4

5:05 am-1:35 pm

1 stop7h 30m

Kalispell Glacier Park

Tue 12/9

6:15 am-12:32 pm

1 stop7h 17m

$331

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Montana from

How to get the cheapest flight ticket from Ontario to Montana

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Montana?

The cheapest month to fly to Montana from Ontario is in December. Flight prices, which tend to average around $276, are often lower during this time because this is during the off-season. The month of March is another great option to travel to Montana, with average flight prices from Ontario averaging around $282.

What is the cheapest day to depart on your flight to Montana?

Our data shows that Tuesday is the least expensive day to fly to Montana. Tickets to fly out on this day can be as low as $359. The most expensive day to fly to Montana is Sunday, with ticket prices averaging around $485.

What is the cheapest time of day to depart on your flight to Montana?

The cheapest time of day to fly to Montana is in the evening when flights can be purchased for as low as $206. At noon is when there is more demand to fly to Montana, so prices are often more expensive at around $488 per ticket.

How far in advance should I book a flight to Montana?

You are more likely to see cheaper flights to Montana from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Montana for around $319 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montana from Ontario for as low as $252 on momondo.

Cheap Ontario to Montana flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Montana

Direct flights

None
There are no direct flights from Ontario to Montana. There are no popular flight routes from Ontario to Montana.
Search flight deals

  • When did momondo last update prices for flights from Ontario Airport to Montana?

    Prices for flights from Ontario Airport to Montana were last updated today.

  • How many operators does momondo search for flights from Ontario Airport to Montana?

  • How old do you have to be to fly from Ontario Airport to Montana?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Montana.

  • What documentation or ID do you need to fly to Montana?

    The travel and health documents required for your trip to Montana can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Montana. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Ontario to Montana

Compare and see reviews for airlines that fly from Ontario to Montana with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $178Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $189Free CancellationRating
7.4
8,928 reviews
Search United Airlines flights
DeltaPriceFrom $198Free CancellationRating
7.9
7,973 reviews
Search Delta flights
SouthwestPriceFrom $236Free CancellationRating
8.0
4,244 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Montana?

Finding the right flight to Montana from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Montana quick and easy, saving you time and money.

Can I find flights from Ontario to Montana with flexible booking policies on momondo?

All flight searches from Ontario to Montana on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Montana?

Once all potential Ontario to Montana flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Montana right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to Montana flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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