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$123+ 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 6/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BIL
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$267
(Hawaiian Airlines)

One-way from

$123
(Delta)

Popular in

March

Cheapest in

October

Average price

$309
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
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Highest demand for flights based on searches. 23% potential increase in price ($128 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 4/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/34:45 pmONT - BIL
1 stop6h 14mHawaiian Airlines
Wed 7/97:17 pmBIL - ONT
1 stop5h 56mHawaiian Airlines
Deal found 4/30$267
This Delta deal was found by Cheapflights users on 4/30. 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.
Tue 5/2010:01 amONT - BIL
1 stop6h 16mDelta
Sat 5/2411:32 amBIL - ONT
1 stop5h 45mDelta
Deal found 4/30$308
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 6/310:00 amONT - BIL
2 stops7h 44mAlaska Airlines
Wed 7/97:17 pmBIL - ONT
1 stop5h 56mAlaska Airlines
Deal found 4/30$332
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Sun 6/15:10 amONT - BIL
1 stop7h 07mUnited Airlines
Sat 6/74:16 pmBIL - ONT
1 stop5h 48mUnited Airlines
Deal found 4/29$362
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/166:01 amONT - BIL
2 stops15h 01mAmerican Airlines
Fri 5/237:13 amBIL - ONT
2 stops15h 44mAmerican Airlines
Deal found 4/30$994

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 May 1, 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 6/3

4:45 pm-11:59 pm

1 stop6h 14m

Billings Logan Intl

Wed 7/9

7:17 pm-12:13 am

1 stop5h 56m

$267

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 5/20

10:01 am-5:17 pm

1 stop6h 16m

Billings Logan Intl

Sat 5/24

11:32 am-4:17 pm

1 stop5h 45m

$308

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 6/3

10:00 am-6:44 pm

2 stops7h 44m

Billings Logan Intl

Wed 7/9

7:17 pm-12:13 am

1 stop5h 56m

$332

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Sun 6/1

5:10 am-1:17 pm

1 stop7h 07m

Billings Logan Intl

Sat 6/7

4:16 pm-9:04 pm

1 stop5h 48m

$362

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Fri 5/16

6:01 am-10:02 pm

2 stops15h 01m

Billings Logan Intl

Fri 5/23

7:13 am-9:57 pm

2 stops15h 44m

$994

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 6/17

5:08 pm-12:12 am

1 stop6h 04m

$123

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 5/22

7:30 am-6:44 pm

2 stops10h 14m

$288

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Mon 6/16

12:59 am-11:06 pm

2 stops21h 07m

$379

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Billings flight deals on Cheapflights vs. FlightHub >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, February is the cheapest month in which you can book a flight from Ontario to Billings (average of $396). Flying from Ontario to Billings in June is currently the most expensive (average of $560). 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 May 1, 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 31% on airfare.

Rainfall in Billings by month

Plan your trip to Billings by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Billings ranges from 0.5 - 2.2 inches per month. May is typically the wettest month, when rainfall can reach 2.2 in. January is typically the driest time to visit Billings when rainfall is around 0.5 in.

Temperature in Billings by month

Plan your trip to Billings by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Billings, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

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 May 1, 2025.
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,408 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Comfort

7.9

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    Currently priced at $267, Hawaiian Airlines will fly you from Ontario to Billings and back. In addition to Hawaiian Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Alaska Airlines - these airlines can fly you to your destination from $308 and $332, respectively. Hawaiian Airlines is currently priced 35% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Ontario to Billings one-way?

    The cheapest airlines for a one-way flight from Ontario to Billings are Delta ($123), Alaska Airlines ($288), and American Airlines ($379).

  • 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, February is the cheapest month in which you can book a flight from Ontario to Billings (average of $396). Flying from Ontario to Billings in June is currently the most expensive (average of $560). 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$245Average$309FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$288Average$375FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$361Average$450FlexibilityNo cancel feeOn-time69%

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