What is the cheapest airline that flies from Billings Logan Intl to Ontario?

Alaska Airlines, American Airlines, and United Airlines are the most popular carriers operating from Billings Logan Intl 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 Billings according to our data. Delta is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 3 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 Billings Logan Intl Airport to Ontario Airport?

Prices for flights from Billings Logan Intl Airport to Ontario Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Billings Logan Intl Airport to Ontario Airport?

The number of operators available for flights from Billings Logan Intl Airport to Ontario Airport is 1 as of September 2025.

How old do you have to be to fly from Billings Logan Intl Airport to Ontario Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Billings Logan Intl Airport to Ontario Airport.

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

The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$82 Cheap Flights from Billings to Ontario in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Billings to Los Angeles

Round-trip

One-way

Last minute

Cheap round-trip flights

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

6:00 am - 11:05 amBIL-ONT

6h 05m1 stop

6:00 am - 3:00 pmONT-BIL

8h 00m1 stop

$247Hawaiian Airlines

Find Deal

Mon, Oct 27 - Tue, Nov 4

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

6:00 am - 12:37 pmBIL-ONT

7h 37m1 stop

11:59 am - 6:39 pmONT-BIL

5h 40m1 stop

$260Alaska Airlines

Find Deal

Tue, Oct 21 - Thu, Oct 30

5:25 am - 9:05 amBIL-ONT

4h 40m1 stop

6:00 am - 11:04 amONT-BIL

4h 04m1 stop

$261Delta

Find Deal

Tue, Oct 21 - Sun, Oct 26

7:15 pm - 12:03 amBIL-ONT

5h 48m1 stop

7:10 am - 1:19 pmONT-BIL

5h 09m1 stop

$286Alaska Airlines

Find Deal

Tue, Oct 21 - Sat, Oct 25

2:30 pm - 10:52 pmBIL-ONT

9h 22m2 stops

1:15 pm - 8:49 pmONT-BIL

6h 34m1 stop

$376United Airlines

Find Deal

Mon, Oct 6 - Fri, Oct 10

2:40 pm - 9:07 pmBIL-ONT

7h 27m1 stop

5:05 am - 1:24 pmONT-BIL

7h 19m1 stop

$435United Airlines

Find Deal

Wed, Dec 31 - Sat, Jan 3

6:50 am - 6:28 pmBIL-ONT

12h 38m1 stop

4:47 pm - 10:54 pmONT-BIL

5h 07m1 stop

$474American Airlines

Find Deal

Tue, Dec 30 - Fri, Jan 2

1:59 pm - 10:33 pmBIL-ONT

9h 34m1 stop

7:27 pm - 11:50 amONT-BIL

15h 23m2 stops

$476American Airlines

Find Deal

Fri, Oct 3 - Fri, Oct 10

American Airlines flights from Billings to Ontario

Our best American Airlines deals on Billings to Ontario flight tickets

American Airlines

Dec 30

BIL6:50 amBillings Logan Intl

12h 38m

1 stop

ONT6:28 pmOntario

Jan 2

ONT4:47 pmOntario

5h 07m

1 stop

BIL10:54 pmBillings Logan Intl

$474

Find similar

American Airlines

Oct 3

BIL1:59 pmBillings Logan Intl

9h 34m

1 stop

ONT10:33 pmOntario

Oct 10

ONT7:27 pmOntario

15h 23m

2 stops

BIL11:50 amBillings Logan Intl

$476

Find similar

American Airlines

Sep 29

BIL1:59 pmBillings Logan Intl

8h 49m

2 stops

ONT9:48 pmOntario

Oct 21

ONT11:59 pmOntario

10h 51m

2 stops

BIL11:50 amBillings Logan Intl

$554

Find similar

United Airlines flights from Billings to Ontario

Our best United Airlines deals on Billings to Ontario flight tickets

United Airlines

Sep 29

BIL7:00 amBillings Logan Intl

6h 51m

1 stop

ONT12:51 pmOntario

Oct 21

ONT1:53 pmOntario

7h 53m

2 stops

BIL10:46 pmBillings Logan Intl

$346

Find similar

United Airlines

Oct 1

BIL2:30 pmBillings Logan Intl

9h 22m

2 stops

ONT10:52 pmOntario

Oct 22

ONT1:53 pmOntario

7h 53m

2 stops

BIL10:46 pmBillings Logan Intl

$351

Find similar

United Airlines

Oct 6

BIL2:30 pmBillings Logan Intl

9h 22m

2 stops

ONT10:52 pmOntario

Oct 10

ONT1:15 pmOntario

6h 34m

1 stop

BIL8:49 pmBillings Logan Intl

$376

Find similar

Fly from

Fly to

Route

Depart

Return

Price

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

Mon 10/27

6:00 am-11:05 am

1 stop6h 05m

Ontario

Tue 11/4

6:00 am-3:00 pm

1 stop8h 00m

$247

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

6:00 am-12:37 pm

1 stop7h 37m

Ontario

Thu 10/30

11:59 am-6:39 pm

1 stop5h 40m

$260

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 10/21

5:25 am-9:05 am

1 stop4h 40m

Ontario

Sun 10/26

6:00 am-11:04 am

1 stop4h 04m

$261

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 10/21

7:15 pm-12:03 am

1 stop5h 48m

Ontario

Sat 10/25

7:10 am-1:19 pm

1 stop5h 09m

$286

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Mon 10/6

2:30 pm-10:52 pm

2 stops9h 22m

Ontario

Fri 10/10

1:15 pm-8:49 pm

1 stop6h 34m

$376

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Wed 12/31

2:40 pm-9:07 pm

1 stop7h 27m

Ontario

Sat 1/3

5:05 am-1:24 pm

1 stop7h 19m

$435

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 12/30

6:50 am-6:28 pm

1 stop12h 38m

Ontario

Fri 1/2

4:47 pm-10:54 pm

1 stop5h 07m

$474

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Fri 10/3

1:59 pm-10:33 pm

1 stop9h 34m

Ontario

Fri 10/10

7:27 pm-11:50 am

2 stops15h 23m

$476

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 Billings 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

What is the cheapest month to fly to Ontario?

In general, November is the cheapest month to fly from Billings to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $255. If you aren’t able to travel during the month of November, then book flights to Ontario from Billings during February instead. Flights to Ontario in February, while not as cheap as those in November, still average around $261.

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 Monday when prices can be found for as low as $293. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Billings to Ontario for around $494.

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 Billings to Ontario when you can find flight prices for as low as $337. 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 in the morning when prices are $494 on average. Flights to Ontario from Billings in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Billings to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Billings to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Billings to Ontario (BIL to ONT) flight deals and tips

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

Direct flights	None

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

Search flight deals

How far is Billings Logan Intl to Ontario by plane?
The straight-line distance from Billings Logan Intl to Ontario is 941.7 mi. A reasonable flight in good conditions will take 4h 05m.
When did momondo last update prices for flights from Billings Logan Intl Airport to Ontario Airport?
Prices for flights from Billings Logan Intl Airport to Ontario Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Billings Logan Intl Airport to Ontario Airport?
The number of operators available for flights from Billings Logan Intl Airport to Ontario Airport is 1 as of September 2025.
How old do you have to be to fly from Billings Logan Intl Airport to Ontario Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Billings Logan Intl Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The required travel and health documents for your Ontario Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Billings to Ontario?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Billings to Ontario is Delta (100% of total bookings).

Best airlines flying from Billings to Ontario

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $244	Free Cancellation	Rating 7.9 7,971 reviews		Search Delta flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Billings to Ontario for you.

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

Yes. momondo allows you to filter the results for Billings to Ontario flights to just show those with flexible booking policies.

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

Once you have performed a search for Billings to Ontario flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Ontario from Billings. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.