Which layover airport has the shortest connection time from Ontario to Billings?

Portland (PDX) has the shortest average layover time for this route: 1h 13m.

Which layover airport has the shortest travel time from Ontario to Billings?

Flights connecting via Salt Lake City (SLC) have the shortest average one-way travel time: 3h 55m.

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 50% 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.

Which layover airport offers the lowest fares from Ontario to Billings?

Flights via Portland (PDX) offer the lowest average round-trip price of $269.

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

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

Which airport is the most popular layover for flights between Ontario and Billings?

Denver (DEN) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

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?

As of March 2026, there are 3 operators available to choose from 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.

$166 Cheap Flights from Ontario to Billings in 2026

Q: What is the typical price of a round-trip flight between Ontario and Billings?

Prices are currently high for flights on this route. Typical prices usually range from $286 to $275. The lowest price recently found on this route was $301.

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Find the cheapest flights from Ontario to Billings

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 10:54 am

ONT

BIL

3h 54m

1 stop

5:30 am - 8:53 am

BIL

ONT

4h 23m

1 stop

$301Delta

Tue, May 19 - Fri, May 22

5:05 pm - 10:24 pm

ONT

BIL

4h 19m

1 stop

6:18 pm - 10:43 pm

BIL

ONT

5h 25m

1 stop

$319Delta

Wed, Apr 22 - Sat, Apr 25

5:00 am - 1:23 pm

ONT

BIL

7h 23m

1 stop

5:05 am - 12:22 pm

BIL

ONT

8h 17m

2 stops

$330United Airlines

Thu, Apr 30 - Thu, May 7

5:05 pm - 10:24 pm

ONT

BIL

4h 19m

1 stop

6:19 pm - 11:34 pm

BIL

ONT

6h 15m

1 stop

$331Delta

Wed, Apr 15 - Wed, May 13

5:00 am - 1:23 pm

ONT

BIL

7h 23m

1 stop

5:05 am - 12:22 pm

BIL

ONT

8h 17m

2 stops

$332United Airlines

Thu, Apr 30 - Thu, May 7

7:00 am - 5:37 pm

ONT

BIL

9h 37m

2 stops

6:19 pm - 11:34 pm

BIL

ONT

6h 15m

1 stop

$336Delta

Wed, Apr 15 - Wed, May 13

5:05 pm - 10:24 pm

ONT

BIL

4h 19m

1 stop

5:20 am - 1:39 pm

BIL

ONT

9h 19m

2 stops

$340Delta

Wed, Apr 22 - Sat, Apr 25

6:00 am - 10:54 am

ONT

BIL

3h 54m

1 stop

6:19 pm - 10:45 pm

BIL

ONT

5h 26m

1 stop

$351Delta

Tue, May 19 - Sun, May 24

9:50 am - 5:39 pm

ONT

BIL

6h 49m

1 stop

5:30 am - 8:53 am

BIL

ONT

4h 23m

1 stop

$355Delta

Wed, May 20 - Fri, May 22

9:40 am - 5:53 pm

ONT

BIL

7h 13m

1 stop

5:18 am - 8:45 am

BIL

ONT

4h 27m

1 stop

$361Delta

Tue, Jul 7 - Fri, Jul 10

Alaska Airlines flights from Ontario to Billings

Our best Alaska Airlines deals on Ontario to Billings flight tickets

Alaska Airlines

Apr 22

ONT7:00 amOntario

5h 26m

1 stop

BIL1:26 pmBillings Logan Intl

Apr 29

BIL7:00 amBillings Logan Intl

8h 32m

1 stop

ONT2:32 pmOntario

$373

Alaska Airlines

Aug 23

ONT4:00 pmOntario

7h 08m

1 stop

BIL12:08 amBillings Logan Intl

Aug 31

BIL6:00 amBillings Logan Intl

6h 09m

1 stop

ONT11:09 amOntario

$385

Alaska Airlines

Apr 29

ONT3:26 pmOntario

6h 33m

1 stop

BIL10:59 pmBillings Logan Intl

May 2

BIL12:47 pmBillings Logan Intl

12h 01m

1 stop

ONT11:48 pmOntario

$393

Delta flights from Ontario to Billings

Our best Delta deals on Ontario to Billings flight tickets

Delta

Sep 16

ONT5:05 pmOntario

4h 22m

1 stop

BIL10:27 pmBillings Logan Intl

Sep 21

BIL5:45 amBillings Logan Intl

4h 16m

1 stop

ONT9:01 amOntario

$301

Delta

Apr 22

ONT5:05 pmOntario

4h 19m

1 stop

BIL10:24 pmBillings Logan Intl

Apr 25

BIL6:18 pmBillings Logan Intl

5h 25m

1 stop

ONT10:43 pmOntario

$319

Delta

Apr 15

ONT5:05 pmOntario

4h 19m

1 stop

BIL10:24 pmBillings Logan Intl

May 13

BIL6:19 pmBillings Logan Intl

6h 15m

1 stop

ONT11:34 pmOntario

$331

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 5/19

6:00 am-10:54 am

1 stop3h 54m

Billings Logan Intl

Fri 5/22

5:30 am-8:53 am

1 stop4h 23m

$301

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 4/22

5:05 pm-10:24 pm

1 stop4h 19m

Billings Logan Intl

Sat 4/25

6:18 pm-10:43 pm

1 stop5h 25m

$319

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 4/30

5:00 am-1:23 pm

1 stop7h 23m

Billings Logan Intl

Thu 5/7

5:05 am-12:22 pm

2 stops8h 17m

$330

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 4/15

5:05 pm-10:24 pm

1 stop4h 19m

Billings Logan Intl

Wed 5/13

6:19 pm-11:34 pm

1 stop6h 15m

$331

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 4/30

5:00 am-1:23 pm

1 stop7h 23m

Billings Logan Intl

Thu 5/7

5:05 am-12:22 pm

2 stops8h 17m

$332

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 4/15

7:00 am-5:37 pm

2 stops9h 37m

Billings Logan Intl

Wed 5/13

6:19 pm-11:34 pm

1 stop6h 15m

$336

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 4/22

5:05 pm-10:24 pm

1 stop4h 19m

Billings Logan Intl

Sat 4/25

5:20 am-1:39 pm

2 stops9h 19m

$340

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 5/19

6:00 am-10:54 am

1 stop3h 54m

Billings Logan Intl

Sun 5/24

6:19 pm-10:45 pm

1 stop5h 26m

$351

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 5/20

9:50 am-5:39 pm

1 stop6h 49m

Billings Logan Intl

Fri 5/22

5:30 am-8:53 am

1 stop4h 23m

$355

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 7/7

9:40 am-5:53 pm

1 stop7h 13m

Billings Logan Intl

Fri 7/10

5:18 am-8:45 am

1 stop4h 27m

$361

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 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

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Ontario and Billings?

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 48m
Direct flights	None

The fastest flight from Ontario to Billings takes 3h 48m

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 48m 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?
As of March 2026, there are 3 operators available to choose from 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?
momondo data reveals that the most frequently booked airline on the route from Ontario to Billings is Delta, representing 67% of all bookings. The subsequent popular airlines are Alaska Airlines at 22% and United Airlines at 12%.

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
Delta	PriceFrom $263	Free Cancellation	Rating 7.9 8,358 reviews	Search Delta flights
United Airlines	PriceFrom $270	Free Cancellation	Rating 7.4 9,514 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $284	Free Cancellation	Rating 7.9 12,140 reviews	Search Alaska Airlines flights

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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.