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Cheap flights from Ontario to Billings from $175

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 7/4. 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.
United Airlines Logo
5:10 am - 1:23 pm
ONT
-
BIL
7h 13m
1 stop
United Airlines Logo
2:35 pm - 8:36 pm
BIL
-
ONT
7h 01m
1 stop
$217United Airlines
Wed, Apr 15 - Sat, Apr 18
United Airlines Logo
5:10 am - 1:23 pm
ONT
-
BIL
7h 13m
1 stop
United Airlines Logo
2:35 pm - 10:45 pm
BIL
-
ONT
9h 10m
2 stops
$222United Airlines
Wed, Apr 15 - Sat, Apr 18
United Airlines Logo
1:34 pm - 8:57 pm
ONT
-
BIL
6h 23m
1 stop
United Airlines Logo
6:35 am - 5:52 pm
BIL
-
ONT
12h 17m
2 stops
$245United Airlines
Wed, Apr 29 - Wed, May 6
Delta Logo
11:53 am - 10:24 pm
ONT
-
BIL
9h 31m
2 stops
Delta Logo
5:20 am - 1:39 pm
BIL
-
ONT
9h 19m
2 stops
$247Delta
Wed, Apr 15 - Sat, Apr 18
Multiple Airlines Logo
7:22 pm - 9:32 am
ONT
-
BIL
13h 10m
1 stop
Multiple Airlines Logo
10:22 am - 5:48 pm
BIL
-
ONT
8h 26m
1 stop
$272Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Delta Logo
6:00 am - 10:53 am
ONT
-
BIL
3h 53m
1 stop
Delta Logo
6:18 pm - 11:44 pm
BIL
-
ONT
6h 26m
1 stop
$274Delta
Wed, Apr 29 - Wed, May 6
Alaska Airlines Logo
7:41 pm - 1:16 pm
ONT
-
BIL
16h 35m
1 stop
Alaska Airlines Logo
7:21 pm - 11:58 pm
BIL
-
ONT
5h 37m
1 stop
$290Alaska Airlines
Mon, Jun 1 - Mon, Jun 8
Delta Logo
6:00 am - 10:53 am
ONT
-
BIL
3h 53m
1 stop
Delta Logo
6:21 pm - 11:51 pm
BIL
-
ONT
6h 30m
1 stop
$296Delta
Thu, Mar 26 - Thu, Mar 26
United Airlines Logo
11:05 am - 10:43 pm
ONT
-
BIL
10h 38m
2 stops
United Airlines Logo
6:35 am - 5:52 pm
BIL
-
ONT
12h 17m
2 stops
$322United Airlines
Wed, Apr 29 - Wed, May 6
Delta Logo
6:00 am - 10:53 am
ONT
-
BIL
3h 53m
1 stop
Delta Logo
6:21 pm - 11:51 pm
BIL
-
ONT
6h 30m
1 stop
$328Delta
Tue, Mar 10 - Tue, Mar 17

Delta flights from Ontario to Billings

Our best Delta deals on Ontario to Billings flight tickets
Delta
Apr 15
ONT11:53 amOntario
9h 31m
2 stops
BIL10:24 pmBillings Logan Intl
Apr 18
BIL5:20 amBillings Logan Intl
9h 19m
2 stops
ONT1:39 pmOntario
$247
Delta
Apr 29
ONT6:00 amOntario
3h 53m
1 stop
BIL10:53 amBillings Logan Intl
May 6
BIL6:18 pmBillings Logan Intl
6h 26m
1 stop
ONT11:44 pmOntario
$274
Delta
Mar 26
ONT6:00 amOntario
3h 53m
1 stop
BIL10:53 amBillings Logan Intl
Mar 26
BIL6:21 pmBillings Logan Intl
6h 30m
1 stop
ONT11:51 pmOntario
$296

United Airlines flights from Ontario to Billings

Our best United Airlines deals on Ontario to Billings flight tickets
United Airlines
Apr 15
ONT5:10 amOntario
7h 13m
1 stop
BIL1:23 pmBillings Logan Intl
Apr 18
BIL2:35 pmBillings Logan Intl
7h 01m
1 stop
ONT8:36 pmOntario
$217
United Airlines
Apr 15
ONT5:10 amOntario
7h 13m
1 stop
BIL1:23 pmBillings Logan Intl
Apr 18
BIL2:35 pmBillings Logan Intl
9h 10m
2 stops
ONT10:45 pmOntario
$222
United Airlines
Apr 29
ONT1:34 pmOntario
6h 23m
1 stop
BIL8:57 pmBillings Logan Intl
May 6
BIL6:35 amBillings Logan Intl
12h 17m
2 stops
ONT5:52 pmOntario
$245

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 February 13, 2026.
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

Wed 4/15

5:10 am-1:23 pm

1 stop7h 13m

Billings Logan Intl

Sat 4/18

2:35 pm-8:36 pm

1 stop7h 01m

$217

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 4/15

5:10 am-1:23 pm

1 stop7h 13m

Billings Logan Intl

Sat 4/18

2:35 pm-10:45 pm

2 stops9h 10m

$222

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 4/29

1:34 pm-8:57 pm

1 stop6h 23m

Billings Logan Intl

Wed 5/6

6:35 am-5:52 pm

2 stops12h 17m

$245

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 4/15

11:53 am-10:24 pm

2 stops9h 31m

Billings Logan Intl

Sat 4/18

5:20 am-1:39 pm

2 stops9h 19m

$247

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 2/26

7:22 pm-9:32 am

1 stop13h 10m

Billings Logan Intl

Mon 3/2

10:22 am-5:48 pm

1 stop8h 26m

$272

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 4/29

6:00 am-10:53 am

1 stop3h 53m

Billings Logan Intl

Wed 5/6

6:18 pm-11:44 pm

1 stop6h 26m

$274

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Mon 6/1

7:41 pm-1:16 pm

1 stop16h 35m

Billings Logan Intl

Mon 6/8

7:21 pm-11:58 pm

1 stop5h 37m

$290

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 3/26

6:00 am-10:53 am

1 stop3h 53m

Billings Logan Intl

Thu 3/26

6:21 pm-11:51 pm

1 stop6h 30m

$296

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 4/29

11:05 am-10:43 pm

2 stops10h 38m

Billings Logan Intl

Wed 5/6

6:35 am-5:52 pm

2 stops12h 17m

$322

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 3/10

6:00 am-10:53 am

1 stop3h 53m

Billings Logan Intl

Tue 3/17

6:21 pm-11:51 pm

1 stop6h 30m

$328

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 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 airline that flies from Ontario to Billings Logan Intl?

United Airlines and Alaska Airlines are the most popular carriers operating from Ontario to Billings Logan Intl

What airlines fly to Billings?

Delta, United Airlines and Alaska Airlines are the top three most popular airlines that fly to Billings from Ontario according to our data. Delta is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Billings. Keep in mind that there are 3 different airlines that fly to Billings on a routine basis, so you have a few additional options to choose from.

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

3h 53m

Direct flights

None
The fastest flight from Ontario to Billings takes 3h 53m
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 3h 53m 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
8,191 reviews
Search Delta flights
United AirlinesPriceFrom $270Free CancellationRating
7.4
9,286 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $284Free CancellationRating
8.0
11,878 reviews
Search Alaska Airlines flights

Traveling to a place near Billings?

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