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Cheap flights from Ontario to Montana from $115

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 8/17. 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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Find the cheapest flights from Ontario to Montana

Cheap round-trip flights

Frontier Logo
5:21 pm - 11:54 amONT-MSO
17h 33m1 stop
Frontier Logo
12:40 pm - 11:50 pmMSO-ONT
12h 10m1 stop
$225Frontier
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Thu, Aug 14 - Mon, Aug 18
Hawaiian Airlines Logo
6:00 am - 2:14 pmONT-BZN
7h 14m1 stop
Hawaiian Airlines Logo
5:22 am - 9:26 amBZN-ONT
5h 04m1 stop
$236Hawaiian Airlines
Find Deal
Wed, Sep 17 - Tue, Sep 23
United Airlines Logo
1:15 pm - 9:31 pmONT-BZN
7h 16m1 stop
United Airlines Logo
2:41 pm - 8:43 pmBZN-ONT
7h 02m1 stop
$237United Airlines
Find Deal
Sat, Sep 13 - Wed, Sep 17
Alaska Airlines Logo
5:49 pm - 12:12 amONT-BZN
5h 23m1 stop
Alaska Airlines Logo
5:22 am - 9:26 amBZN-ONT
5h 04m1 stop
$238Alaska Airlines
Find Deal
Fri, Sep 5 - Mon, Sep 8
United Airlines Logo
5:10 am - 1:31 pmONT-BZN
7h 21m1 stop
United Airlines Logo
4:20 pm - 8:43 pmBZN-ONT
5h 23m1 stop
$239United Airlines
Find Deal
Sun, Aug 24 - Wed, Aug 27
Alaska Airlines Logo
6:00 am - 3:04 pmONT-BIL
8h 04m1 stop
Alaska Airlines Logo
7:15 pm - 12:03 amBIL-ONT
5h 48m1 stop
$240Alaska Airlines
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Wed, Oct 8 - Mon, Oct 13
Delta Logo
9:50 am - 5:44 pmONT-MSO
6h 54m1 stop
Delta Logo
5:30 am - 8:55 amMSO-ONT
4h 25m1 stop
$241Delta
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Sun, Aug 24 - Fri, Aug 29
Delta Logo
6:00 am - 11:05 amONT-BZN
4h 05m1 stop
Delta Logo
5:30 am - 8:57 amBZN-ONT
4h 27m1 stop
$241Delta
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Sun, Sep 28 - Sun, Oct 5
Southwest Logo
3:30 pm - 11:35 pmONT-BZN
7h 05m1 stop
Southwest Logo
7:25 am - 12:40 pmBZN-ONT
6h 15m2 stops
$278Southwest
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Fri, Sep 5 - Mon, Sep 8
Southwest Logo
5:05 pm - 10:35 pmONT-BZN
4h 30m1 stop
Southwest Logo
8:30 am - 5:05 pmBZN-ONT
9h 35m2 stops
$303Southwest
Find Deal
Mon, Sep 1 - Sat, Sep 6

Hawaiian Airlines flights from Ontario to Montana

Our best Hawaiian Airlines deals on Ontario to Montana flight tickets
Hawaiian Airlines
Sep 17
ONT6:00 amOntario
7h 14m
1 stop
BZN2:14 pmBozeman Gallatin Field
Sep 23
BZN5:22 amBozeman Gallatin Field
5h 04m
1 stop
ONT9:26 amOntario
$236
Find similar
Hawaiian Airlines
Sep 5
ONT3:06 pmOntario
6h 32m
1 stop
BZN10:38 pmBozeman Gallatin Field
Sep 8
BZN5:22 amBozeman Gallatin Field
5h 04m
1 stop
ONT9:26 amOntario
$240
Find similar
Hawaiian Airlines
Oct 8
ONT6:00 amOntario
5h 22m
1 stop
FCA12:22 pmKalispell Glacier Park
Oct 11
FCA6:35 pmKalispell Glacier Park
6h 28m
1 stop
ONT12:03 amOntario
$264
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Alaska Airlines flights from Ontario to Montana

Our best Alaska Airlines deals on Ontario to Montana flight tickets
Alaska Airlines
Sep 5
ONT5:49 pmOntario
5h 23m
1 stop
BZN12:12 amBozeman Gallatin Field
Sep 8
BZN5:22 amBozeman Gallatin Field
5h 04m
1 stop
ONT9:26 amOntario
$238
Find similar
Alaska Airlines
Oct 8
ONT6:00 amOntario
8h 04m
1 stop
BIL3:04 pmBillings Logan Intl
Oct 13
BIL7:15 pmBillings Logan Intl
5h 48m
1 stop
ONT12:03 amOntario
$240
Find similar
Alaska Airlines
Sep 22
ONT7:10 amOntario
5h 24m
1 stop
MSO1:34 pmMissoula Johnson-Bell Field
Sep 27
MSO5:45 amMissoula Johnson-Bell Field
4h 41m
1 stop
ONT9:26 amOntario
$259
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 August 4, 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

Thu 8/14

5:21 pm-11:54 am

1 stop17h 33m

Missoula Johnson-Bell Field

Mon 8/18

12:40 pm-11:50 pm

1 stop12h 10m

$225

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Wed 9/17

6:00 am-2:14 pm

1 stop7h 14m

Bozeman Gallatin Field

Tue 9/23

5:22 am-9:26 am

1 stop5h 04m

$236

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Sat 9/13

1:15 pm-9:31 pm

1 stop7h 16m

Bozeman Gallatin Field

Wed 9/17

2:41 pm-8:43 pm

1 stop7h 02m

$237

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 9/5

5:49 pm-12:12 am

1 stop5h 23m

Bozeman Gallatin Field

Mon 9/8

5:22 am-9:26 am

1 stop5h 04m

$238

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Sun 8/24

5:10 am-1:31 pm

1 stop7h 21m

Bozeman Gallatin Field

Wed 8/27

4:20 pm-8:43 pm

1 stop5h 23m

$239

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 10/8

6:00 am-3:04 pm

1 stop8h 04m

Billings Logan Intl

Mon 10/13

7:15 pm-12:03 am

1 stop5h 48m

$240

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Sun 8/24

9:50 am-5:44 pm

1 stop6h 54m

Missoula Johnson-Bell Field

Fri 8/29

5:30 am-8:55 am

1 stop4h 25m

$241

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Sun 9/28

6:00 am-11:05 am

1 stop4h 05m

Bozeman Gallatin Field

Sun 10/5

5:30 am-8:57 am

1 stop4h 27m

$241

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Fri 9/5

3:30 pm-11:35 pm

1 stop7h 05m

Bozeman Gallatin Field

Mon 9/8

7:25 am-12:40 pm

2 stops6h 15m

$278

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Mon 9/1

5:05 pm-10:35 pm

1 stop4h 30m

Bozeman Gallatin Field

Sat 9/6

8:30 am-5:05 pm

2 stops9h 35m

$303

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 January. Flight prices, which tend to average around $280, are often lower during this time because this is during the off-season. The month of December is another great option to travel to Montana, with average flight prices from Ontario averaging around $298.

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 $342 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 $248 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

Best Price Found

$115

Fastest flight time

3h 31m

Direct flights

None

Airports in Montana

6 airports
The best one-way flight to Montana from Ontario in the past 72 hours is $115. The best round-trip flight deal from Ontario to Montana found on momondo in the last 72 hours is $225.
The fastest flight from Ontario to Montana takes 3h 31m
There are no direct flights from Ontario to Montana. Popular non-direct routes for this connection are Ontario Airport - Bozeman Gallatin Field Airport, Ontario Airport - Kalispell Glacier Park Airport and Ontario Airport - Missoula Johnson-Bell Field Airport.
There are 6 airports near Montana: West Yellowstone (WYS), Billings Logan Intl (BIL), Kalispell Glacier Park (FCA), Bozeman Gallatin Field (BZN), Missoula Johnson-Bell Field (MSO), Helena (HLN)
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  • 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
DeltaPriceFrom $198Free CancellationRating
8.0
7,987 reviews
Search Delta flights
United AirlinesPriceFrom $224Free CancellationRating
7.4
8,912 reviews
Search United Airlines flights
SouthwestPriceFrom $236Free CancellationRating
8.0
4,246 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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