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Billings

$156+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BIL
Aug 24 — Aug 311
Mon 8/24
Mon 8/31
1 adult, Economy
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Cheap 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 July 25, 2026.

This United Airlines deal was found by Cheapflights users on 7/21. 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 8/181:18 pm
ONT
-
BIL
1 stop6h 42m
United Airlines
Tue 8/254:40 pm
BIL
-
ONT
1 stop5h 13m
United Airlines
Deal found 7/21$311
This Delta deal was found by Cheapflights users on 7/21. 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 8/186:00 am
ONT
-
BIL
1 stop4h 07m
Delta
Mon 8/245:20 am
BIL
-
ONT
1 stop4h 32m
Delta
Deal found 7/21$321
This flugladen.de deal was found by Cheapflights users on 7/23. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:26 pm
ONT
-
BIL
1 stop5h 25m
Alaska Airlines
Wed 8/196:14 am
BIL
-
ONT
1 stop5h 50m
Alaska Airlines
Deal found 7/23$355
This Booking.com deal was found by Cheapflights users on 7/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:05 pm
ONT
-
BIL
1 stop19h 57m
Alaska Airlines
Mon 8/313:42 pm
BIL
-
ONT
1 stop5h 42m
Alaska Airlines
Deal found 7/20$366
This Booking.com deal was found by Cheapflights users on 7/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:59 pm
ONT
-
BIL
1 stop14h 32m
Alaska Airlines
Tue 9/87:29 pm
BIL
-
ONT
2 stops22h 49m
Alaska Airlines
Deal found 7/22$367
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Wed 8/261:18 pm
ONT
-
BIL
1 stop6h 42m
United Airlines
Mon 8/317:00 am
BIL
-
ONT
2 stops12h 11m
United Airlines
Deal found 7/22$371
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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 8/2612:00 pm
ONT
-
BIL
1 stop5h 40m
Alaska Airlines
Mon 8/317:20 pm
BIL
-
ONT
1 stop24h 43m
Alaska Airlines
Deal found 7/22$372
This Alaska Airlines deal was found by Cheapflights users on 7/20. 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.
Sat 12/54:00 pm
ONT
-
BIL
1 stop7h 08m
Alaska Airlines
Wed 12/96:00 am
BIL
-
ONT
1 stop6h 09m
Alaska Airlines
Deal found 7/20$384
This Mytrip deal was found by Cheapflights users on 7/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:59 pm
ONT
-
BIL
1 stop14h 41m
Alaska Airlines
Sat 9/196:14 am
BIL
-
ONT
2 stops10h 33m
Alaska Airlines
Deal found 7/20$392

Find 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 July 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$311
(United Airlines)

One-way from

$156
(Delta)

Popular in

April

Cheapest in

February

Average price

$411
Provider with most accurate pricing for Ontario-Billings Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Billings Logan Intl flights.
Search Deals
From Ontario to Billings Logan Intl
Search Deals
One-way flight from Ontario to Billings Logan Intl
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($71 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 25, 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

Cheapest round-trip

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 8/26

6:02 am-6:40 pm

1 stop11h 38m

Billings Logan Intl

Mon 8/31

3:42 pm-8:24 pm

1 stop5h 42m

$321

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 8/26

1:18 pm-9:00 pm

1 stop6h 42m

Billings Logan Intl

Mon 8/31

7:00 am-6:11 pm

2 stops12h 11m

$371

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Sat 12/5

4:00 pm-12:08 am

1 stop7h 08m

Billings Logan Intl

Wed 12/9

6:00 am-11:09 am

1 stop6h 09m

$394
Quickest round-trip

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Wed 8/19

5:00 am-1:21 pm

1 stop7h 21m

Billings Logan Intl

Tue 8/25

4:40 pm-8:53 pm

1 stop5h 13m

$439

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Sat 12/5

5:00 am-1:13 pm

1 stop7h 13m

Billings Logan Intl

Wed 12/9

7:00 am-5:47 pm

2 stops11h 47m

$454
Cheapest one-way
Quickest one-way

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Tue 8/11

5:05 pm-10:25 pm

1 stop4h 20m

$156

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 9/10

3:14 pm-11:29 pm

1 stop7h 15m

$181

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Sat 10/3

2:13 pm-11:50 pm

1 stop8h 37m

$209

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Thu 9/3

1:18 pm-9:00 pm

1 stop6h 42m

$226

OntarioBillings

ONT - BIL

ONTBIL

Ontario

Sat 10/3

8:03 am-9:10 pm

2 stops12h 07m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 16 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 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 FlightHub the most. FlightHub 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

How much does it cost to fly round-trip from Ontario to Billings?

Airfare is below average for this route at the moment.

Ontario to Billings flights typically cost between $355 and $542 in August.
The cheapest round-trip price found within the last 5 days was $311 on United Airlines (Aug 18-Aug 25).

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 July 25, 2026.
Read through reviews of airlines operating flights from Ontario to Billings, such as Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,712 reviews

Boarding

8.1

Entertainment

7.0

Crew

8.5

Food

7.0

Overall

7.9

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Alaska Airlines
7.9
Good
12,712 reviews
Alaska Airlines
7.9
Good
12,712 reviews

Boarding

8.1

Entertainment

7.0

Crew

8.5

Food

7.0

Overall

7.9

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.
Delta
7.8
Good
8,488 reviews
Alaska Airlines
7.9
Good
12,712 reviews

Boarding

8.1

Entertainment

7.0

Crew

8.5

Food

7.0

Overall

7.9

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Franzi,Mar 2026

SFO - PDX

I love flying with Alaska. I think they sre the best airline.

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 6h 42m. 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 $260, Delta will fly you from Ontario to Billings and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Alaska Airlines for as low as $269. Delta is currently priced 38% 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Ontario to Billings

Discover the top 2 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 July 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$260Average$370FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$269Average$619FlexibilityNo cancel feeOn-time75%

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