How long does it take to fly to Ontario?

Average flight duration from Montana to Ontario depends on which airport you fly into and out of. Flying from Bozeman to Los Angeles is 2h 39m on average, while flying from Kalispell to Los Angeles is 3h 02m on average. Los Angeles is the most popular airport in Ontario.

What is the cheapest airline that flies from Montana to Ontario?

Hawaiian Airlines, Alaska Airlines, and Delta are the most popular carriers operating from Montana to Ontario

What airlines fly to Ontario?

Delta, United Airlines and Alaska Airlines are the top three most popular airlines that fly to Ontario from Montana according to our data. Delta is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 6 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Montana to Ontario Airport are updated daily.

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

As of September 2025, there are 4 operators available to choose from for flights from Montana to Ontario Airport.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montana to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$112 Cheap Flights from Montana to Ontario in 2025/26

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Find the cheapest flights from Montana to Los Angeles

Round-trip

One-way

Last minute

Cheap round-trip flights

5:10 am - 9:58 amBZN-ONT

5h 48m1 stop

7:20 am - 1:02 pmONT-BZN

4h 42m1 stop

$210Alaska Airlines

Find Deal

Wed, Oct 29 - Tue, Nov 4

12:50 pm - 11:50 pmMSO-ONT

12h 00m1 stop

6:53 am - 11:55 amONT-MSO

28h 02m1 stop

$227Frontier

Find Deal

Fri, Oct 10 - Sun, Oct 12

5:10 am - 9:58 amBZN-ONT

5h 48m1 stop

7:20 am - 1:02 pmONT-BZN

4h 42m1 stop

$228Alaska Airlines

Find Deal

Tue, Oct 28 - Tue, Nov 4

3:25 pm - 10:37 pmBZN-ONT

8h 12m1 stop

6:00 am - 2:25 pmONT-BZN

7h 25m1 stop

$229Hawaiian Airlines

Find Deal

Sat, Feb 28 - Tue, Mar 3

12:50 pm - 11:50 pmMSO-ONT

12h 00m1 stop

6:53 am - 11:55 amONT-MSO

28h 02m1 stop

$241Frontier

Find Deal

Fri, Oct 17 - Sun, Oct 19

6:00 am - 11:05 amBIL-ONT

6h 05m1 stop

11:59 am - 6:39 pmONT-BIL

5h 40m1 stop

$246Hawaiian Airlines

Find Deal

Mon, Oct 27 - Tue, Nov 4

7:00 am - 12:51 pmBIL-ONT

6h 51m1 stop

4:15 pm - 10:46 pmONT-BIL

5h 31m1 stop

$255United Airlines

Find Deal

Tue, Oct 21 - Tue, Oct 21

5:25 am - 9:05 amBIL-ONT

4h 40m1 stop

6:00 am - 11:04 amONT-BIL

4h 04m1 stop

$259Delta

Find Deal

Mon, Oct 27 - Tue, Nov 4

5:00 am - 12:13 pmBIL-ONT

8h 13m2 stops

1:15 pm - 8:49 pmONT-BIL

6h 34m1 stop

$260United Airlines

Find Deal

Tue, Oct 21 - Tue, Oct 21

3:01 pm - 10:41 pmBZN-ONT

8h 40m1 stop

3:45 pm - 10:14 pmONT-BZN

5h 29m1 stop

$261Delta

Find Deal

Thu, Oct 30 - Sat, Nov 1

Frontier flights from Montana to Ontario

Our best Frontier deals on Montana to Ontario flight tickets

Frontier

Oct 10

MSO12:50 pmMissoula Johnson-Bell Field

12h 00m

1 stop

ONT11:50 pmOntario

Oct 12

ONT6:53 amOntario

28h 02m

1 stop

MSO11:55 amMissoula Johnson-Bell Field

$227

Find similar

Frontier

Oct 17

MSO12:50 pmMissoula Johnson-Bell Field

12h 00m

1 stop

ONT11:50 pmOntario

Oct 19

ONT6:53 amOntario

28h 02m

1 stop

MSO11:55 amMissoula Johnson-Bell Field

$241

Find similar

Hawaiian Airlines flights from Montana to Ontario

Our best Hawaiian Airlines deals on Montana to Ontario flight tickets

Hawaiian Airlines

Feb 28

BZN3:25 pmBozeman Gallatin Field

8h 12m

1 stop

ONT10:37 pmOntario

Mar 3

ONT6:00 amOntario

7h 25m

1 stop

BZN2:25 pmBozeman Gallatin Field

$229

Find similar

Hawaiian Airlines

Oct 27

BIL6:00 amBillings Logan Intl

6h 05m

1 stop

ONT11:05 amOntario

Nov 4

ONT11:59 amOntario

5h 40m

1 stop

BIL6:39 pmBillings Logan Intl

$246

Find similar

Hawaiian Airlines

Oct 18

GTF6:15 pmGreat Falls

6h 48m

1 stop

ONT12:03 amOntario

Oct 23

ONT7:43 pmOntario

20h 52m

1 stop

GTF5:35 pmGreat Falls

$303

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BozemanOntario

BZN - ONT

BZNONT

Bozeman Gallatin Field

Wed 10/29

5:10 am-9:58 am

1 stop5h 48m

Ontario

Tue 11/4

7:20 am-1:02 pm

1 stop4h 42m

$210

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Fri 10/10

12:50 pm-11:50 pm

1 stop12h 00m

Ontario

Sun 10/12

6:53 am-11:55 am

1 stop28h 02m

$227

BozemanOntario

BZN - ONT

BZNONT

Bozeman Gallatin Field

Tue 10/28

5:10 am-9:58 am

1 stop5h 48m

Ontario

Tue 11/4

7:20 am-1:02 pm

1 stop4h 42m

$228

BozemanOntario

BZN - ONT

BZNONT

Bozeman Gallatin Field

Sat 2/28

3:25 pm-10:37 pm

1 stop8h 12m

Ontario

Tue 3/3

6:00 am-2:25 pm

1 stop7h 25m

$229

MissoulaOntario

MSO - ONT

MSOONT

Missoula Johnson-Bell Field

Fri 10/17

12:50 pm-11:50 pm

1 stop12h 00m

Ontario

Sun 10/19

6:53 am-11:55 am

1 stop28h 02m

$241

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Mon 10/27

6:00 am-11:05 am

1 stop6h 05m

Ontario

Tue 11/4

11:59 am-6:39 pm

1 stop5h 40m

$246

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 10/21

7:00 am-12:51 pm

1 stop6h 51m

Ontario

Tue 10/21

4:15 pm-10:46 pm

1 stop5h 31m

$255

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Mon 10/27

5:25 am-9:05 am

1 stop4h 40m

Ontario

Tue 11/4

6:00 am-11:04 am

1 stop4h 04m

$259

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 10/21

5:00 am-12:13 pm

2 stops8h 13m

Ontario

Tue 10/21

1:15 pm-8:49 pm

1 stop6h 34m

$260

BozemanOntario

BZN - ONT

BZNONT

Bozeman Gallatin Field

Thu 10/30

3:01 pm-10:41 pm

1 stop8h 40m

Ontario

Sat 11/1

3:45 pm-10:14 pm

1 stop5h 29m

$261

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Montana to Ontario

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

Prices

Airlines

Other information

What is the cheapest month to fly to Ontario?

In general, February is the cheapest month to fly from Montana to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $240. If you aren’t able to travel during the month of February, then book flights to Ontario from Montana during April instead. Flights to Ontario in April, while not as cheap as those in February, still average around $256.

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

The cheapest day to depart on your flight to Ontario is on a Wednesday when prices can be found for as low as $436. This is often the case because there is less demand to fly during this day of the week. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Montana to Ontario for around $654.

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

In the afternoon is the cheapest time of day to fly from Montana to Ontario when you can find flight prices for as low as $465. Flying to Ontario in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $635 on average. Flights to Ontario from Montana at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Cheap Montana to Ontario flight deals and tips

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

Direct flights	None

There are no direct flights from Montana to Ontario. There are no popular flight routes from Montana to Ontario.

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When did momondo last update prices for flights from Montana to Ontario Airport?
Prices for flights from Montana to Ontario Airport are updated daily.
How many operators does momondo search for flights from Montana to Ontario Airport?
As of September 2025, there are 4 operators available to choose from for flights from Montana to Ontario Airport.
How old do you have to be to fly from Montana to Ontario Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montana to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents you'll need for your trip to Ontario Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ontario Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Montana to Ontario

Compare and see reviews for airlines that fly from Montana to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $229	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $232	Free Cancellation	Rating 7.4 8,928 reviews	Search United Airlines flights
Delta	PriceFrom $236	Free Cancellation	Rating 7.9 7,973 reviews	Search Delta flights
Southwest	PriceFrom $256	Free Cancellation	Rating 8.0 4,244 reviews	Search Southwest flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Montana to Ontario. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Ontario from Montana which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Montana to Ontario 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 Montana to Ontario right now. Can momondo alert me if prices change?

Price alerts on flights to Ontario from Montana are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.