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Cheap flights from Ontario to Billings from $92

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Billings departing on 1/15. 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

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Find the cheapest flights from Ontario to Billings

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
7:00 am - 1:22 pm
ONT
-
BIL
5h 22m1 stop
Alaska Airlines Logo
3:35 pm - 8:10 pm
BIL
-
ONT
5h 35m1 stop
$260Alaska Airlines
Thu, Jan 22 - Mon, Jan 26
Delta Logo
5:05 pm - 10:27 pm
ONT
-
BIL
4h 22m1 stop
Delta Logo
5:45 am - 9:01 am
BIL
-
ONT
4h 16m1 stop
$261Delta
Mon, Jun 8 - Mon, Jun 15
Delta Logo
5:05 pm - 10:27 pm
ONT
-
BIL
4h 22m1 stop
Delta Logo
5:45 am - 9:01 am
BIL
-
ONT
4h 16m1 stop
$273Delta
Sun, Jun 14 - Tue, Jun 16
Delta Logo
6:00 am - 11:12 am
ONT
-
BIL
4h 12m1 stop
Delta Logo
6:10 pm - 10:38 pm
BIL
-
ONT
5h 28m1 stop
$291Delta
Thu, Jan 1 - Fri, Jan 9
Alaska Airlines Logo
7:00 am - 1:22 pm
ONT
-
BIL
5h 22m1 stop
Alaska Airlines Logo
3:35 pm - 11:56 pm
BIL
-
ONT
9h 21m2 stops
$298Alaska Airlines
Thu, Jan 22 - Mon, Jan 26
Alaska Airlines Logo
7:00 am - 1:15 pm
ONT
-
BIL
5h 15m1 stop
Alaska Airlines Logo
6:00 am - 10:53 am
BIL
-
ONT
5h 53m1 stop
$304Alaska Airlines
Wed, Apr 22 - Sun, Apr 26
Delta Logo
5:05 pm - 10:27 pm
ONT
-
BIL
4h 22m1 stop
Delta Logo
5:45 am - 9:01 am
BIL
-
ONT
4h 16m1 stop
$305Delta
Fri, Jun 12 - Wed, Jun 17
Alaska Airlines Logo
7:56 pm - 2:55 pm
ONT
-
BIL
17h 59m2 stops
Alaska Airlines Logo
3:35 pm - 8:10 pm
BIL
-
ONT
5h 35m1 stop
$312Alaska Airlines
Mon, Jan 19 - Sat, Jan 24
United Airlines Logo
5:05 am - 1:24 pm
ONT
-
BIL
7h 19m1 stop
United Airlines Logo
4:13 pm - 8:58 pm
BIL
-
ONT
5h 45m1 stop
$315United Airlines
Mon, Jan 19 - Sat, Jan 24
Alaska Airlines Logo
7:00 am - 1:15 pm
ONT
-
BIL
5h 15m1 stop
Alaska Airlines Logo
3:50 pm - 11:48 pm
BIL
-
ONT
8h 58m1 stop
$318Alaska Airlines
Thu, Apr 30 - Thu, May 7

Alaska Airlines flights from Ontario to Billings

Our best Alaska Airlines deals on Ontario to Billings flight tickets
Alaska Airlines
Jan 31
ONT7:00 amOntario
5h 22m
1 stop
BIL1:22 pmBillings Logan Intl
Feb 4
BIL3:35 pmBillings Logan Intl
6h 01m
1 stop
ONT8:36 pmOntario
$253
Find similar
Alaska Airlines
Jan 22
ONT7:00 amOntario
5h 22m
1 stop
BIL1:22 pmBillings Logan Intl
Jan 26
BIL3:35 pmBillings Logan Intl
5h 35m
1 stop
ONT8:10 pmOntario
$260
Find similar
Alaska Airlines
Jan 31
ONT4:03 pmOntario
6h 33m
1 stop
BIL11:36 pmBillings Logan Intl
Feb 4
BIL7:00 amBillings Logan Intl
14h 10m
2 stops
ONT8:10 pmOntario
$281
Find similar

Delta flights from Ontario to Billings

Our best Delta deals on Ontario to Billings flight tickets
Delta
Jun 8
ONT5:05 pmOntario
4h 22m
1 stop
BIL10:27 pmBillings Logan Intl
Jun 18
BIL5:45 amBillings Logan Intl
4h 16m
1 stop
ONT9:01 amOntario
$261
Find similar
Delta
Jun 14
ONT5:05 pmOntario
4h 22m
1 stop
BIL10:27 pmBillings Logan Intl
Jun 16
BIL5:45 amBillings Logan Intl
4h 16m
1 stop
ONT9:01 amOntario
$273
Find similar
Delta
Jan 1
ONT6:00 amOntario
4h 12m
1 stop
BIL11:12 amBillings Logan Intl
Jan 9
BIL6:10 pmBillings Logan Intl
5h 28m
1 stop
ONT10:38 pmOntario
$291
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Billings 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 December 18, 2025.
Use the filters below to find and compare flights from Ontario to Billings that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 1/22

7:00 am-1:22 pm

1 stop5h 22m

Billings Logan Intl

Mon 1/26

3:35 pm-8:10 pm

1 stop5h 35m

$260

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Mon 6/8

5:05 pm-10:27 pm

1 stop4h 22m

Billings Logan Intl

Mon 6/15

5:45 am-9:01 am

1 stop4h 16m

$261

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Sun 6/14

5:05 pm-10:27 pm

1 stop4h 22m

Billings Logan Intl

Tue 6/16

5:45 am-9:01 am

1 stop4h 16m

$273

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 1/1

6:00 am-11:12 am

1 stop4h 12m

Billings Logan Intl

Fri 1/9

6:10 pm-10:38 pm

1 stop5h 28m

$291

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 1/22

7:00 am-1:22 pm

1 stop5h 22m

Billings Logan Intl

Mon 1/26

3:35 pm-11:56 pm

2 stops9h 21m

$298

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 4/22

7:00 am-1:15 pm

1 stop5h 15m

Billings Logan Intl

Sun 4/26

6:00 am-10:53 am

1 stop5h 53m

$304

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Fri 6/12

5:05 pm-10:27 pm

1 stop4h 22m

Billings Logan Intl

Wed 6/17

5:45 am-9:01 am

1 stop4h 16m

$305

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Mon 1/19

7:56 pm-2:55 pm

2 stops17h 59m

Billings Logan Intl

Sat 1/24

3:35 pm-8:10 pm

1 stop5h 35m

$312

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Mon 1/19

5:05 am-1:24 pm

1 stop7h 19m

Billings Logan Intl

Sat 1/24

4:13 pm-8:58 pm

1 stop5h 45m

$315

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 4/30

7:00 am-1:15 pm

1 stop5h 15m

Billings Logan Intl

Thu 5/7

3:50 pm-11:48 pm

1 stop8h 58m

$318

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Billings from

How to get the cheapest flight ticket from Ontario to Billings

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 month to fly to Billings?

The month of April is, on average, the cheapest month to fly to Billings from Ontario, with most prices found around $269. The month of May is another great option to travel to Billings, with average flight prices from Ontario averaging around $309.

What is the cheapest day to depart on your flight to Billings?

Our data shows that Thursday is the least expensive day to fly to Billings. Tickets to fly out on this day can be as low as $114. Flights from Ontario to Billings on a Monday will generally be more expensive and average around $492. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Billings?

According to our data, the cheapest time of day to fly to Billings is in the morning. momondo users have found flights departing from Ontario to Billings in the morning for as low as $116. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the evening is when there is more demand to fly to Billings, so prices are often more expensive at around $396 per ticket.

When to book flights from Ontario to Billings

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

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

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

Fastest flight time

4h 03m

Direct flights

None
The fastest flight from Ontario to Billings takes 4h 03m
There are no direct flights from Ontario to Billings. There are no popular flight routes from Ontario to Billings.
Search flight deals

  • How far is Ontario to Billings Logan Intl by plane?

    The straight-line distance from Ontario to Billings Logan Intl is 941.7 mi. Typically, this will take 4h 03m by plane in normal conditions.

  • When did momondo last update prices for flights from Ontario Airport to Billings Logan Intl Airport?

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

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

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

    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 Billings Logan Intl Airport.

  • What documentation or ID do you need to fly to Billings Logan Intl Airport?

    The required travel and health documents for your Billings Logan Intl 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 Billings Logan Intl 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 Ontario to Billings?

Best airlines flying from Ontario to Billings

Compare and see reviews for airlines that fly from Ontario to Billings with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $263Free CancellationRating
7.9
8,009 reviews
Search Delta flights
United AirlinesPriceFrom $270Free CancellationRating
7.4
9,093 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $284Free CancellationRating
8.0
11,479 reviews
Search Alaska Airlines flights

  • United Airlines Flights From Ontario to Billings

    United Airlines flight deals from Ontario to Billings start from $270 round-trip. Over the 1 United Airlines flight for this route in a normal week, average airfare is usually $501 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near Billings?

Book flights to Billings if you plan to visit one of these locations
Forsyth

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Billings. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Ontario to Billings with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Ontario to Billings 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 Ontario to Billings right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Billings, momondo offers a useful price alert feature which will track prices for flights to Billings from Ontario and alert you when they change.

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