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Cheap flights from Billings to Los Angeles from $102

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 6/15. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Billings to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:19 pm - 11:34 pm
BIL
-
ONT
6h 15m
1 stop
Delta Logo
6:00 am - 10:54 am
ONT
-
BIL
3h 54m
1 stop
$331Delta
Tue, May 12 - Sun, May 17
Delta Logo
5:30 am - 12:35 pm
BIL
-
ONT
8h 05m
2 stops
Delta Logo
6:00 am - 10:54 am
ONT
-
BIL
3h 54m
1 stop
$336Delta
Tue, May 12 - Sun, May 17
Delta Logo
5:30 am - 8:53 am
BIL
-
ONT
4h 23m
1 stop
Delta Logo
6:00 am - 10:54 am
ONT
-
BIL
3h 54m
1 stop
$345Delta
Sun, May 31 - Tue, Jun 2
Delta Logo
5:30 am - 8:53 am
BIL
-
ONT
4h 23m
1 stop
Delta Logo
5:55 pm - 10:52 pm
ONT
-
BIL
3h 57m
1 stop
$350Delta
Tue, May 12 - Sat, May 16
Alaska Airlines Logo
3:42 pm - 8:24 pm
BIL
-
ONT
5h 42m
1 stop
Alaska Airlines Logo
7:10 am - 3:02 pm
ONT
-
BIL
6h 52m
1 stop
$351Alaska Airlines
Tue, Aug 25 - Sat, Aug 29
Delta Logo
5:30 am - 12:35 pm
BIL
-
ONT
8h 05m
2 stops
Delta Logo
5:55 pm - 10:52 pm
ONT
-
BIL
3h 57m
1 stop
$355Delta
Tue, May 12 - Sat, May 16
Delta Logo
5:30 am - 8:53 am
BIL
-
ONT
4h 23m
1 stop
Delta Logo
5:05 pm - 10:27 pm
ONT
-
BIL
4h 22m
1 stop
$359Delta
Fri, May 29 - Fri, Aug 21
Delta Logo
5:30 am - 8:53 am
BIL
-
ONT
4h 23m
1 stop
Delta Logo
6:00 am - 10:54 am
ONT
-
BIL
3h 54m
1 stop
$360Delta
Mon, May 11 - Sun, May 17
Delta Logo
5:30 am - 8:53 am
BIL
-
ONT
4h 23m
1 stop
Delta Logo
6:00 am - 10:54 am
ONT
-
BIL
3h 54m
1 stop
$361Delta
Wed, May 13 - Sun, May 17
Alaska Airlines Logo
6:00 am - 11:10 am
BIL
-
ONT
6h 10m
1 stop
Alaska Airlines Logo
6:00 am - 1:21 pm
ONT
-
BIL
6h 21m
1 stop
$364Alaska Airlines
Sat, May 30 - Tue, Jun 2

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Alaska Airlines flights from Billings to Ontario

Our best Alaska Airlines deals on Billings to Ontario flight tickets
Alaska Airlines
Aug 25
BIL3:42 pmBillings Logan Intl
5h 42m
1 stop
ONT8:24 pmOntario
Aug 29
ONT7:10 amOntario
6h 52m
1 stop
BIL3:02 pmBillings Logan Intl
$351
Alaska Airlines
May 29
BIL6:00 amBillings Logan Intl
6h 10m
1 stop
ONT11:10 amOntario
Jun 2
ONT4:03 pmOntario
6h 30m
1 stop
BIL11:33 pmBillings Logan Intl
$359
Alaska Airlines
May 30
BIL6:00 amBillings Logan Intl
6h 10m
1 stop
ONT11:10 amOntario
Jun 2
ONT6:00 amOntario
6h 21m
1 stop
BIL1:21 pmBillings Logan Intl
$364

Delta flights from Billings to Ontario

Our best Delta deals on Billings to Ontario flight tickets
Delta
May 12
BIL6:19 pmBillings Logan Intl
6h 15m
1 stop
ONT11:34 pmOntario
May 17
ONT6:00 amOntario
3h 54m
1 stop
BIL10:54 amBillings Logan Intl
$331
Delta
May 12
BIL5:30 amBillings Logan Intl
8h 05m
2 stops
ONT12:35 pmOntario
May 17
ONT6:00 amOntario
3h 54m
1 stop
BIL10:54 amBillings Logan Intl
$336
Delta
May 31
BIL5:30 amBillings Logan Intl
4h 23m
1 stop
ONT8:53 amOntario
Jun 2
ONT6:00 amOntario
3h 54m
1 stop
BIL10:54 amBillings Logan Intl
$345

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 April 30, 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

Cheapest round-trip

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 5/12

6:19 pm-11:34 pm

1 stop6h 15m

Ontario

Sun 5/17

6:00 am-10:54 am

1 stop3h 54m

$331

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 5/12

5:30 am-12:35 pm

2 stops8h 05m

Ontario

Sun 5/17

6:00 am-10:54 am

1 stop3h 54m

$336
Quickest round-trip

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Sun 5/31

5:30 am-8:53 am

1 stop4h 23m

Ontario

Tue 6/2

6:00 am-10:54 am

1 stop3h 54m

$345

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 5/12

5:30 am-8:53 am

1 stop4h 23m

Ontario

Sat 5/16

5:55 pm-10:52 pm

1 stop3h 57m

$350

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 8/25

3:42 pm-8:24 pm

1 stop5h 42m

Ontario

Sat 8/29

7:10 am-3:02 pm

1 stop6h 52m

$351

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Tue 5/12

5:30 am-12:35 pm

2 stops8h 05m

Ontario

Sat 5/16

5:55 pm-10:52 pm

1 stop3h 57m

$355

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Fri 5/29

5:30 am-8:53 am

1 stop4h 23m

Ontario

Fri 8/21

5:05 pm-10:27 pm

1 stop4h 22m

$359

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Mon 5/11

5:30 am-8:53 am

1 stop4h 23m

Ontario

Sun 5/17

6:00 am-10:54 am

1 stop3h 54m

$360

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Wed 5/13

5:30 am-8:53 am

1 stop4h 23m

Ontario

Sun 5/17

6:00 am-10:54 am

1 stop3h 54m

$361

BillingsOntario

BIL - ONT

BILONT

Billings Logan Intl

Sat 5/30

6:00 am-11:10 am

1 stop6h 10m

Ontario

Tue 6/2

6:00 am-1:21 pm

1 stop6h 21m

$364

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Billings and Ontario?

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

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

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 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
9,677 reviews
Search United Airlines flights
DeltaPriceFrom $244Free CancellationRating
7.9
8,464 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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