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

Delta 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 57% 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 2026.

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.

$229 Cheap Flights from Billings to Ontario in 2026/27

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Find the cheapest flights from Billings to Los Angeles

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5:12 pm - 11:06 pmBIL Billings Logan Intl-ONT Ontario

6h 54m1 stop Seattle/Tacoma Intl

5:59 pm - 2:52 pmONT Ontario-BIL Billings Logan Intl

19h 53m1 stop Portland

$331Alaska Airlines

Thu, Nov 5 - Mon, Nov 9

5:20 am - 8:55 amBIL Billings Logan Intl-ONT Ontario

4h 35m1 stop Salt Lake City

5:03 pm - 10:25 pmONT Ontario-BIL Billings Logan Intl

4h 22m1 stop Salt Lake City

$341Delta

Mon, Oct 19 - Tue, Oct 27

5:00 am - 12:29 pmBIL Billings Logan Intl-ONT Ontario

8h 29m2 stops Denver Intl San Francisco

5:00 am - 1:29 pmONT Ontario-BIL Billings Logan Intl

7h 29m1 stop Denver Intl

$386United Airlines

Thu, Nov 5 - Mon, Nov 9

5:20 am - 8:55 amBIL Billings Logan Intl-ONT Ontario

4h 35m1 stop Salt Lake City

6:00 am - 12:18 pmONT Ontario-BIL Billings Logan Intl

5h 18m1 stop Salt Lake City

$391Delta

Sun, Oct 25 - Thu, Oct 29

5:20 am - 8:55 amBIL Billings Logan Intl-ONT Ontario

4h 35m1 stop Salt Lake City

9:45 am - 5:49 pmONT Ontario-BIL Billings Logan Intl

7h 04m1 stop Salt Lake City

$391Delta

Sun, Oct 25 - Thu, Oct 29

3:15 pm - 8:02 pmBIL Billings Logan Intl-ONT Ontario

5h 47m1 stop Portland

7:10 am - 1:54 pmONT Ontario-BIL Billings Logan Intl

5h 44m1 stop Portland

$391Alaska Airlines

Wed, Jan 20 - Sun, Jan 24

2:28 pm - 8:58 pmBIL Billings Logan Intl-ONT Ontario

7h 30m1 stop Denver Intl

1:24 pm - 9:10 pmONT Ontario-BIL Billings Logan Intl

6h 46m1 stop Denver Intl

$413United Airlines

Wed, Oct 14 - Wed, Oct 21

12:05 pm - 6:00 pmBIL Billings Logan Intl-ONT Ontario

6h 55m1 stop Seattle/Tacoma Intl

7:25 am - 3:04 pmONT Ontario-BIL Billings Logan Intl

6h 39m1 stop Portland

$435Alaska Airlines

Mon, Oct 26 - Wed, Oct 28

3:44 pm - 11:59 pmBIL Billings Logan Intl-ONT Ontario

9h 15m1 stop Portland

6:00 am - 3:08 pmONT Ontario-BIL Billings Logan Intl

8h 08m1 stop Seattle/Tacoma Intl

$437Alaska Airlines

Sat, Dec 5 - Wed, Dec 9

5:20 am - 9:02 amBIL Billings Logan Intl-ONT Ontario

4h 42m1 stop Salt Lake City

1:04 pm - 5:53 pmONT Ontario-BIL Billings Logan Intl

3h 49m1 stop Salt Lake City

$441Delta

Tue, Sep 29 - Sat, Oct 3

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Delta flights from Billings to Ontario

Our best Delta deals on Billings to Ontario flight tickets

Delta

Oct 19

BIL5:20 amBillings Logan Intl

4h 35m

1 stop

ONT8:55 amOntario

Oct 27

ONT5:03 pmOntario

4h 22m

1 stop

BIL10:25 pmBillings Logan Intl

$341

Delta

Oct 25

BIL5:20 amBillings Logan Intl

4h 35m

1 stop

ONT8:55 amOntario

Oct 29

ONT6:00 amOntario

5h 18m

1 stop

BIL12:18 pmBillings Logan Intl

$391

Delta

Sep 29

BIL5:20 amBillings Logan Intl

4h 42m

1 stop

ONT9:02 amOntario

Oct 3

ONT1:04 pmOntario

3h 49m

1 stop

BIL5:53 pmBillings Logan Intl

$441

United Airlines flights from Billings to Ontario

Our best United Airlines deals on Billings to Ontario flight tickets

United Airlines

Nov 5

BIL5:00 amBillings Logan Intl

8h 29m

2 stops

ONT12:29 pmOntario

Nov 9

ONT5:00 amOntario

7h 29m

1 stop

BIL1:29 pmBillings Logan Intl

$386

United Airlines

Oct 14

BIL2:28 pmBillings Logan Intl

7h 30m

1 stop

ONT8:58 pmOntario

Oct 21

ONT1:24 pmOntario

6h 46m

1 stop

BIL9:10 pmBillings Logan Intl

$413

United Airlines

Dec 5

BIL2:33 pmBillings Logan Intl

7h 38m

1 stop

ONT9:11 pmOntario

Dec 9

ONT1:40 pmOntario

6h 49m

1 stop

BIL9:29 pmBillings Logan Intl

$469

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BillingsOntario

BIL Billings Logan Intl - ONT Ontario

BILONT

Billings Logan Intl

Thu 11/5

5:12 pm-11:06 pm

1 stop6h 54m

Ontario

Mon 11/9

5:59 pm-2:52 pm

1 stop19h 53m

$331

BillingsOntario

BIL Billings Logan Intl - ONT Ontario

BILONT

Billings Logan Intl

Mon 10/19

5:20 am-8:55 am

1 stop4h 35m

Ontario

Tue 10/27

5:03 pm-10:25 pm

1 stop4h 22m

$341

BillingsOntario

BIL Billings Logan Intl - ONT Ontario

BILONT

Billings Logan Intl

Thu 11/5

5:00 am-12:29 pm

2 stops8h 29m

Ontario

Mon 11/9

5:00 am-1:29 pm

1 stop7h 29m

$386

BillingsOntario

BIL Billings Logan Intl - ONT Ontario

BILONT

Billings Logan Intl

Sun 10/25

5:20 am-8:55 am

1 stop4h 35m

Ontario

Thu 10/29

6:00 am-12:18 pm

1 stop5h 18m

$391

BillingsOntario

BIL Billings Logan Intl - ONT Ontario

BILONT

Billings Logan Intl

Sun 10/25

5:20 am-8:55 am

1 stop4h 35m

Ontario

Thu 10/29

9:45 am-5:49 pm

1 stop7h 04m

$391

BillingsOntario

BIL Billings Logan Intl - ONT Ontario

BILONT

Billings Logan Intl

Wed 1/20

3:15 pm-8:02 pm

1 stop5h 47m

Ontario

Sun 1/24

7:10 am-1:54 pm

1 stop5h 44m

$391

BillingsOntario

BIL Billings Logan Intl - ONT Ontario

BILONT

Billings Logan Intl

Wed 10/14

2:28 pm-8:58 pm

1 stop7h 30m

Ontario

Wed 10/21

1:24 pm-9:10 pm

1 stop6h 46m

$413

BillingsOntario

BIL Billings Logan Intl - ONT Ontario

BILONT

Billings Logan Intl

Mon 10/26

12:05 pm-6:00 pm

1 stop6h 55m

Ontario

Wed 10/28

7:25 am-3:04 pm

1 stop6h 39m

$435

BillingsOntario

BIL Billings Logan Intl - ONT Ontario

BILONT

Billings Logan Intl

Sat 12/5

3:44 pm-11:59 pm

1 stop9h 15m

Ontario

Wed 12/9

6:00 am-3:08 pm

1 stop8h 08m

$437

Quickest round-trip

BillingsOntario

BIL Billings Logan Intl - ONT Ontario

BILONT

Billings Logan Intl

Tue 9/29

5:20 am-9:02 am

1 stop4h 42m

Ontario

Sat 10/3

1:04 pm-5:53 pm

1 stop3h 49m

$441

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, March 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 $0. If you aren’t able to travel during the month of March, then book flights to Ontario from Billings during January instead. Flights to Ontario in January, while not as cheap as those in March, still average around $0.

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

Best Price Found	$229
Fastest flight time	4h 35m
Direct flights	None

The best one-way flight to Ontario from Billings in the past 72 hours is $229. The best round-trip flight deal from Billings to Ontario found on momondo in the last 72 hours is $331.

The fastest flight from Billings to Ontario takes 4h 35m

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

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Frequently asked questions about flying from Billings to Ontario

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 35m.
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 2026.
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 $180	Free Cancellation	Rating 7.8 8,570 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.

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Cheap flights from Billings to Los Angeles from $229

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Billings to Los Angeles departing on 11/24. 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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Delta flights from Billings to Ontario

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How to get the cheapest flight ticket from Billings to Ontario

What is the cheapest month to fly to Ontario?

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

What airlines fly to Ontario?

When to book flights from Billings to Ontario

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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Billings to Ontario

Best airlines flying from Billings to Ontario

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

Why use momondo?

An easier way to manage your Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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