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Billings

$175+ Cheap flights from Ontario to Billings (ONT - BIL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BIL
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap flight deals from Ontario to Billings

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Billings (BIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$258
(Kiwi.com)

One-way from

$175
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$379
Provider with most accurate pricing for Ontario-Billings Logan Intl flight deals.
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Provider most trusted by Cheapflights users for Ontario-Billings Logan Intl flights.
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From Ontario to Billings Logan Intl
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One-way flight from Ontario to Billings Logan Intl
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($119 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Ontario to Billings

Cheapest flights from Ontario to Billings
Explore the most affordable flight options available from Ontario to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/174:49 pmONT - BIL
1 stop6h 21mDelta
Tue 11/186:24 pmBIL - ONT
1 stop6h 28mDelta
Deal found 10/27$261
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/114:49 pmONT - BIL
1 stop6h 34mDelta
Wed 12/176:22 pmBIL - ONT
1 stop6h 36mDelta
Deal found 10/28$262
This Alaska Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/117:20 amONT - BIL
1 stop5h 00mAlaska Airlines
Mon 11/172:00 pmBIL - ONT
1 stop7h 53mAlaska Airlines
Deal found 10/27$290
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/164:49 pmONT - BIL
1 stop6h 21mDelta
Tue 11/186:24 pmBIL - ONT
1 stop6h 28mDelta
Deal found 10/27$301
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/174:49 pmONT - BIL
1 stop6h 21mDelta
Sat 11/226:24 pmBIL - ONT
1 stop4h 25mDelta
Deal found 10/27$305
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:05 amONT - BIL
1 stop7h 18mUnited Airlines
Mon 11/102:31 pmBIL - ONT
1 stop7h 13mUnited Airlines
Deal found 10/27$315
This Alaska Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:00 amONT - BIL
1 stop8h 00mAlaska Airlines
Wed 11/127:19 pmBIL - ONT
1 stop16h 46mAlaska Airlines
Deal found 10/27$320
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/94:49 pmONT - BIL
1 stop6h 21mDelta
Tue 11/116:24 pmBIL - ONT
1 stop6h 28mDelta
Deal found 10/26$321
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/111:33 pmONT - BIL
1 stop6h 45mUnited Airlines
Wed 11/122:31 pmBIL - ONT
2 stops9h 20mUnited Airlines
Deal found 10/27$322
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/305:06 pmONT - BIL
1 stop14h 59mMultiple Airlines
Sun 12/710:24 pmBIL - ONT
1 stop23h 53mMultiple Airlines
Deal found 10/28$328
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/115:05 amONT - BIL
1 stop7h 18mUnited Airlines
Tue 11/112:31 pmBIL - ONT
1 stop7h 13mUnited Airlines
Deal found 10/27$337
This Alaska Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2710:49 amONT - BIL
1 stop6h 43mAlaska Airlines
Wed 12/103:36 pmBIL - ONT
1 stop5h 27mAlaska Airlines
Deal found 10/28$339

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated October 28, 2025.
Use the filters below to find and compare flights from Ontario to Billings that are best for you.

Fly from

Ontario

Fly to

Billings

Route

Depart

Return

Price

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 4/7

5:05 pm-10:37 pm

1 stop4h 32m

Billings Logan Intl

Wed 4/8

5:59 pm-11:52 pm

1 stop6h 53m

$261

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Mon 11/17

4:49 pm-12:10 am

1 stop6h 21m

Billings Logan Intl

Wed 11/19

6:24 pm-11:52 pm

1 stop6h 28m

$261

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 11/11

7:20 am-1:20 pm

1 stop5h 00m

Billings Logan Intl

Wed 11/19

6:00 am-11:05 am

1 stop6h 05m

$290

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 11/11

7:20 am-1:20 pm

1 stop5h 00m

Billings Logan Intl

Tue 11/18

6:00 am-11:05 am

1 stop6h 05m

$290

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 11/12

6:00 am-3:00 pm

1 stop8h 00m

Billings Logan Intl

Wed 11/19

6:00 am-11:05 am

1 stop6h 05m

$290

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 11/13

7:20 am-1:20 pm

1 stop5h 00m

Billings Logan Intl

Mon 11/17

2:00 pm-8:53 pm

1 stop7h 53m

$290

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 11/13

4:11 pm-12:07 am

1 stop6h 56m

Billings Logan Intl

Tue 11/18

6:00 am-11:05 am

1 stop6h 05m

$290

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 11/11

7:20 am-1:20 pm

1 stop5h 00m

Billings Logan Intl

Mon 11/17

2:00 pm-8:53 pm

1 stop7h 53m

$290

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 11/12

6:00 am-3:00 pm

1 stop8h 00m

Billings Logan Intl

Mon 11/17

6:00 am-11:05 am

1 stop6h 05m

$290

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Sun 11/23

5:06 pm-4:31 pm

1 stop22h 25m

$175

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 18 results
1
2

Compare providers for flights from Ontario to Billings

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Billings in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Billings flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Billings flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Billings flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Billings flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Billings flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Billings

Have a flexible travel schedule? Discover the best time to fly to Billings from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Billings

What is the cheapest month to book a flight from Ontario to Billings?

Currently, August is the cheapest month in which you can book a flight from Ontario to Billings (average of $120). Flying from Ontario to Billings in April is currently the most expensive (average of $253). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to BIL?

Find hourly flight availability from Ontario to Billings. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 28, 2025.

One of the essential ways to save on airfare from Ontario to Billings is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 30% on airfare.

Reviews of airlines servicing Billings

Get insights into the airlines that provide service to Billings. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Billings. Reviews last updated October 28, 2025.
Read through reviews of airlines operating flights from Ontario to Billings, such as Alaska Airlines, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,199 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,199 reviews
Alaska Airlines
8.0
Very good
11,199 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
7.9
Good
7,995 reviews
Alaska Airlines
8.0
Very good
11,199 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,996 reviews
Alaska Airlines
8.0
Very good
11,199 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Food

7.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Billings. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Billings?

    Departing from Ontario to Billings will take you 4h 32m. The distance from Ontario to Billings is about 941 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Ontario to Billings round-trip?

    Currently priced at $245, Delta will fly you from Ontario to Billings and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Alaska Airlines - these airlines can fly you to your destination from $270 and $284, respectively. Delta is currently priced 35% below the average price you’ll pay for this route.

  • Can I find deals for flights from Ontario to Billings that include hotel bookings?

    Yes. In addition to deals on Ontario to Billings flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Billings?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Billings.

  • Can I find deals for business class flights from Ontario to Billings?

    Yes. Cheapflights offers flight deals from Ontario to Billings by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Billings?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Billings (average of $120). Flying from Ontario to Billings in April is currently the most expensive (average of $253). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 3 airlines flying from Ontario to Billings

Discover the top 3 airlines that operate flights from Ontario to Billings. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$245Average$327FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$270Average$507FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$284Average$322FlexibilityNo cancel feeOn-time75%

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