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

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

What airlines fly to Montana?

United Airlines, Delta and Alaska Airlines are the top three most popular airlines that fly to Montana from Ontario according to our data. United Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Montana. Keep in mind that there are 8 different airlines that fly to Montana on a routine basis, so you have a few additional options to choose from.

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?

As of March 2026, there are 4 operators available to choose from 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.

$92 Cheap Flights from Ontario to Montana in 2026

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Find the cheapest flights from Ontario to Montana

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:30 pm - 12:15 am

ONT

BZN

6h 45m

1 stop

11:20 am - 3:10 pm

BZN

ONT

4h 50m

1 stop

$178Southwest

Wed, Apr 22 - Tue, Apr 28

3:45 pm - 12:15 am

ONT

BZN

7h 30m

2 stops

11:20 am - 3:10 pm

BZN

ONT

4h 50m

1 stop

$184Southwest

Wed, Apr 22 - Tue, Apr 28

4:03 pm - 10:42 pm

ONT

BZN

5h 39m

1 stop

8:00 am - 3:09 pm

BZN

ONT

8h 09m

1 stop

$238Alaska Airlines

Tue, May 19 - Thu, May 28

6:00 am - 11:04 am

ONT

BZN

4h 04m

1 stop

3:15 pm - 10:37 pm

BZN

ONT

8h 22m

1 stop

$244Delta

Sun, Apr 26 - Wed, Apr 29

8:59 pm - 8:04 pm

ONT

MSO

22h 05m

1 stop

8:54 pm - 6:49 pm

MSO

ONT

22h 55m

1 stop

$258Multiple Airlines

Thu, Apr 23 - Mon, Apr 27

5:05 pm - 11:27 pm

ONT

FCA

5h 22m

1 stop

6:07 pm - 10:45 pm

FCA

ONT

5h 38m

1 stop

$277Delta

Tue, May 5 - Sat, May 9

6:00 am - 12:03 pm

ONT

FCA

5h 03m

1 stop

7:28 pm - 11:59 pm

FCA

ONT

5h 31m

1 stop

$298Alaska Airlines

Thu, May 7 - Mon, May 11

10:27 pm - 8:04 pm

ONT

MSO

20h 37m

1 stop

8:54 pm - 10:44 am

MSO

ONT

14h 50m

1 stop

$305Multiple Airlines

Thu, Apr 9 - Mon, Apr 13

5:10 am - 1:23 pm

ONT

BIL

7h 13m

1 stop

5:05 am - 12:22 pm

BIL

ONT

8h 17m

2 stops

$306United Airlines

Wed, Apr 29 - Thu, May 7

5:00 am - 1:23 pm

ONT

BIL

7h 23m

1 stop

5:05 am - 12:22 pm

BIL

ONT

8h 17m

2 stops

$341United Airlines

Thu, Apr 30 - Thu, May 7

Alaska Airlines flights from Ontario to Montana

Our best Alaska Airlines deals on Ontario to Montana flight tickets

Alaska Airlines

May 19

ONT4:03 pmOntario

5h 39m

1 stop

BZN10:42 pmBozeman Gallatin Field

May 28

BZN8:00 amBozeman Gallatin Field

8h 09m

1 stop

ONT3:09 pmOntario

$238

Alaska Airlines

Apr 21

ONT7:00 amOntario

5h 10m

1 stop

BZN1:10 pmBozeman Gallatin Field

Apr 21

BZN4:04 pmBozeman Gallatin Field

5h 19m

1 stop

ONT8:23 pmOntario

$265

Alaska Airlines

May 13

ONT4:03 pmOntario

5h 39m

1 stop

BZN10:42 pmBozeman Gallatin Field

May 19

BZN8:00 amBozeman Gallatin Field

8h 09m

1 stop

ONT3:09 pmOntario

$291

Delta flights from Ontario to Montana

Our best Delta deals on Ontario to Montana flight tickets

Delta

Apr 26

ONT6:00 amOntario

4h 04m

1 stop

BZN11:04 amBozeman Gallatin Field

Apr 29

BZN3:15 pmBozeman Gallatin Field

8h 22m

1 stop

ONT10:37 pmOntario

$244

Delta

Apr 22

ONT5:05 pmOntario

6h 04m

1 stop

BZN12:09 amBozeman Gallatin Field

Apr 26

BZN6:34 pmBozeman Gallatin Field

6h 10m

1 stop

ONT11:44 pmOntario

$269

Delta

May 11

ONT4:57 pmOntario

6h 02m

1 stop

BZN11:59 pmBozeman Gallatin Field

May 18

BZN5:35 amBozeman Gallatin Field

4h 18m

1 stop

ONT8:53 amOntario

$271

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Wed 4/22

4:30 pm-12:15 am

1 stop6h 45m

Bozeman Gallatin Field

Tue 4/28

11:20 am-3:10 pm

1 stop4h 50m

$178

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Wed 4/22

3:45 pm-12:15 am

2 stops7h 30m

Bozeman Gallatin Field

Tue 4/28

11:20 am-3:10 pm

1 stop4h 50m

$184

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Tue 5/19

4:03 pm-10:42 pm

1 stop5h 39m

Bozeman Gallatin Field

Thu 5/28

8:00 am-3:09 pm

1 stop8h 09m

$238

OntarioBozeman

ONT - BZN

ONTBZN

Ontario

Sun 4/26

6:00 am-11:04 am

1 stop4h 04m

Bozeman Gallatin Field

Wed 4/29

3:15 pm-10:37 pm

1 stop8h 22m

$244

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 4/23

8:59 pm-8:04 pm

1 stop22h 05m

Missoula Johnson-Bell Field

Mon 4/27

8:54 pm-6:49 pm

1 stop22h 55m

$258

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Tue 5/5

5:05 pm-11:27 pm

1 stop5h 22m

Kalispell Glacier Park

Sat 5/9

6:07 pm-10:45 pm

1 stop5h 38m

$277

Quickest round-trip

OntarioKalispell

ONT - FCA

ONTFCA

Ontario

Thu 5/7

6:00 am-12:03 pm

1 stop5h 03m

Kalispell Glacier Park

Mon 5/11

7:28 pm-11:59 pm

1 stop5h 31m

$298

OntarioMissoula

ONT - MSO

ONTMSO

Ontario

Thu 4/9

10:27 pm-8:04 pm

1 stop20h 37m

Missoula Johnson-Bell Field

Mon 4/13

8:54 pm-10:44 am

1 stop14h 50m

$305

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 4/29

5:10 am-1:23 pm

1 stop7h 13m

Billings Logan Intl

Thu 5/7

5:05 am-12:22 pm

2 stops8h 17m

$306

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 4/30

5:00 am-1:23 pm

1 stop7h 23m

Billings Logan Intl

Thu 5/7

5:05 am-12:22 pm

2 stops8h 17m

$341

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 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

Prices

Airlines

What is the cheapest month to fly to Montana?

The cheapest month to fly to Montana from Ontario is in February. Flight prices, which tend to average around $216, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Montana, with average flight prices from Ontario averaging around $248.

Cheap Ontario to Montana flight deals and tips

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

Fastest flight time	3h 40m
Direct flights	None

The fastest flight from Ontario to Montana takes 3h 40m

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?
As of March 2026, there are 4 operators available to choose from 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 Airlines	PriceFrom $178	Free Cancellation	Rating 7.9 12,100 reviews	Search Alaska Airlines flights
Delta	PriceFrom $184	Free Cancellation	Rating 7.9 8,321 reviews	Search Delta flights
United Airlines	PriceFrom $189	Free Cancellation	Rating 7.4 9,464 reviews	Search United Airlines flights
Southwest	PriceFrom $211	Free Cancellation	Rating 8.0 4,324 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.