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Cheap flights from Billings to Los Angeles from $131

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 4/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Billings to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:35 pm - 8:36 pm
BIL
-
ONT
7h 01m
1 stop
United Airlines Logo
5:00 am - 1:23 pm
ONT
-
BIL
7h 23m
1 stop
$260United Airlines
Tue, Apr 14 - Wed, May 6
Delta Logo
6:18 pm - 11:44 pm
BIL
-
ONT
6h 26m
1 stop
Delta Logo
11:53 am - 10:24 pm
ONT
-
BIL
9h 31m
2 stops
$262Delta
Tue, Apr 14 - Wed, May 6
Alaska Airlines Logo
12:34 pm - 5:09 pm
BIL
-
ONT
5h 35m
1 stop
Alaska Airlines Logo
7:59 pm - 12:07 pm
ONT
-
BIL
15h 08m
1 stop
$281Alaska Airlines
Tue, Apr 14 - Thu, May 7
Alaska Airlines Logo
12:47 pm - 11:48 pm
BIL
-
ONT
12h 01m
1 stop
Alaska Airlines Logo
3:26 pm - 1:21 pm
ONT
-
BIL
20h 55m
1 stop
$293Alaska Airlines
Tue, Apr 28 - Tue, May 12
United Airlines Logo
5:05 am - 12:22 pm
BIL
-
ONT
8h 17m
2 stops
United Airlines Logo
5:00 am - 1:23 pm
ONT
-
BIL
7h 23m
1 stop
$295United Airlines
Mon, May 4 - Wed, May 6
Alaska Airlines Logo
2:05 pm - 11:59 pm
BIL
-
ONT
10h 54m
1 stop
Alaska Airlines Logo
7:08 pm - 11:58 pm
ONT
-
BIL
27h 50m
1 stop
$303Alaska Airlines
Wed, Apr 8 - Wed, Apr 15
Alaska Airlines Logo
7:21 pm - 11:58 pm
BIL
-
ONT
5h 37m
1 stop
Alaska Airlines Logo
4:03 pm - 11:33 pm
ONT
-
BIL
6h 30m
1 stop
$305Alaska Airlines
Wed, May 27 - Sat, May 30
Alaska Airlines Logo
2:06 pm - 9:45 am
BIL
-
ONT
20h 39m
1 stop
Alaska Airlines Logo
10:39 am - 12:07 pm
ONT
-
BIL
24h 28m
1 stop
$308Alaska Airlines
Sat, Apr 25 - Wed, Apr 29
United Airlines Logo
2:35 pm - 8:36 pm
BIL
-
ONT
7h 01m
1 stop
United Airlines Logo
5:10 am - 1:23 pm
ONT
-
BIL
7h 13m
1 stop
$313United Airlines
Sat, Apr 25 - Wed, Apr 29
United Airlines Logo
7:00 am - 5:47 pm
BIL
-
ONT
11h 47m
2 stops
United Airlines Logo
1:38 pm - 8:57 pm
ONT
-
BIL
6h 19m
1 stop
$318United Airlines
Sat, Apr 25 - Wed, Apr 29

Alaska Airlines flights from Billings to Ontario

Our best Alaska Airlines deals on Billings to Ontario flight tickets
Alaska Airlines
Apr 28
BIL12:47 pmBillings Logan Intl
12h 01m
1 stop
ONT11:48 pmOntario
May 12
ONT3:26 pmOntario
20h 55m
1 stop
BIL1:21 pmBillings Logan Intl
$293
Alaska Airlines
Apr 8
BIL2:05 pmBillings Logan Intl
10h 54m
1 stop
ONT11:59 pmOntario
Apr 15
ONT7:08 pmOntario
27h 50m
1 stop
BIL11:58 pmBillings Logan Intl
$303
Alaska Airlines
May 27
BIL7:21 pmBillings Logan Intl
5h 37m
1 stop
ONT11:58 pmOntario
May 30
ONT4:03 pmOntario
6h 30m
1 stop
BIL11:33 pmBillings Logan Intl
$305

United Airlines flights from Billings to Ontario

Our best United Airlines deals on Billings to Ontario flight tickets
United Airlines
Apr 14
BIL2:35 pmBillings Logan Intl
7h 01m
1 stop
ONT8:36 pmOntario
May 6
ONT5:00 amOntario
7h 23m
1 stop
BIL1:23 pmBillings Logan Intl
$260
United Airlines
May 4
BIL5:05 amBillings Logan Intl
8h 17m
2 stops
ONT12:22 pmOntario
May 6
ONT5:00 amOntario
7h 23m
1 stop
BIL1:23 pmBillings Logan Intl
$295
United Airlines
Apr 25
BIL2:35 pmBillings Logan Intl
7h 01m
1 stop
ONT8:36 pmOntario
Apr 29
ONT5:10 amOntario
7h 13m
1 stop
BIL1:23 pmBillings Logan Intl
$313

momondo Fare Finder

 
Customize your flight search to find flights from Billings to Ontario 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 March 4, 2026.
Use the filters below to find and compare flights from Billings to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 4/14

2:35 pm-8:36 pm

1 stop7h 01m

Ontario

Wed 5/6

5:00 am-1:23 pm

1 stop7h 23m

$260

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 4/14

6:18 pm-11:44 pm

1 stop6h 26m

Ontario

Wed 5/6

11:53 am-10:24 pm

2 stops9h 31m

$262

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 4/14

12:34 pm-5:09 pm

1 stop5h 35m

Ontario

Thu 5/7

7:59 pm-12:07 pm

1 stop15h 08m

$281

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 4/28

12:47 pm-11:48 pm

1 stop12h 01m

Ontario

Tue 5/12

3:26 pm-1:21 pm

1 stop20h 55m

$293

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Mon 5/4

5:05 am-12:22 pm

2 stops8h 17m

Ontario

Wed 5/6

5:00 am-1:23 pm

1 stop7h 23m

$295

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Wed 4/8

2:05 pm-11:59 pm

1 stop10h 54m

Ontario

Wed 4/15

7:08 pm-11:58 pm

1 stop27h 50m

$303

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Wed 5/27

7:21 pm-11:58 pm

1 stop5h 37m

Ontario

Sat 5/30

4:03 pm-11:33 pm

1 stop6h 30m

$305

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Sat 4/25

2:06 pm-9:45 am

1 stop20h 39m

Ontario

Wed 4/29

10:39 am-12:07 pm

1 stop24h 28m

$308

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Sat 4/25

2:35 pm-8:36 pm

1 stop7h 01m

Ontario

Wed 4/29

5:10 am-1:23 pm

1 stop7h 13m

$313

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Sat 4/25

7:00 am-5:47 pm

2 stops11h 47m

Ontario

Wed 4/29

1:38 pm-8:57 pm

1 stop6h 19m

$318

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 Los Angeles from

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

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

Delta and Alaska 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 49% 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 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

Fastest flight time

4h 16m

Direct flights

None
The fastest flight from Billings to Ontario takes 4h 16m
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 16m.

  • 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?

  • 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?

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
United AirlinesPriceFrom $241Free CancellationRating
7.4
9,382 reviews
Search United Airlines flights
DeltaPriceFrom $244Free CancellationRating
7.9
8,245 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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