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$133+ Cheap flights from Helena to Ontario (HLN - ONT)

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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — ONT
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
1 adult, Economy
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Cheap flight deals from Helena to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to Ontario (ONT). 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 March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$405
(Alaska Airlines)

One-way from

$133
(Delta)

Popular in

December

Cheapest in

April

Average price

$311
Provider with most accurate pricing for Helena-Ontario flight deals.
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Provider most trusted by Cheapflights users for Helena-Ontario flights.
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From Helena to Ontario
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One-way flight from Helena to Ontario
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Helena to Ontario

Cheapest flights from Helena to Ontario
Explore the most affordable flight options available from Helena to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 26, 2025.

This Alaska Airlines deal was found by Cheapflights users on 3/25. 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 5/294:11 pmHLN - ONT
1 stop7h 35mAlaska Airlines
Sun 6/16:00 amONT - HLN
1 stop8h 31mAlaska Airlines
Deal found 3/25$405
This United Airlines deal was found by Cheapflights users on 3/25. 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 6/256:25 amHLN - ONT
1 stop7h 06mUnited Airlines
Sun 6/295:05 amONT - HLN
1 stop7h 53mUnited Airlines
Deal found 3/25$479

Cheapflights Fare Finder

Customize your flight search to find flights from Helena to Ontario 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 March 26, 2025.
Use the filters below to find and compare flights from Helena to Ontario that are best for you.

Fly from

Helena

Fly to

Ontario

Route

Depart

Return

Price

HelenaOntario

HLN - ONT

HLNONT

Helena

Thu 5/29

4:11 pm-10:46 pm

1 stop7h 35m

Ontario

Sun 6/1

6:00 am-3:31 pm

1 stop8h 31m

$405

HelenaOntario

HLN - ONT

HLNONT

Helena

Wed 6/25

6:25 am-12:31 pm

1 stop7h 06m

Ontario

Sun 6/29

5:05 am-1:58 pm

1 stop7h 53m

$479

HelenaOntario

HLN - ONT

HLNONT

Helena

Wed 4/30

1:18 pm-4:33 pm

1 stop4h 15m

$133

HelenaOntario

HLN - ONT

HLNONT

Helena

Fri 5/9

7:29 pm-11:59 pm

1 stop5h 30m

$142

HelenaOntario

HLN - ONT

HLNONT

Helena

Sun 4/20

6:45 am-12:38 pm

1 stop6h 53m

$200

HelenaOntario

HLN - ONT

HLNONT

Helena

Tue 4/8

4:19 pm-10:39 am

1 stop19h 20m

$279

HelenaOntario

HLN - ONT

HLNONT

Helena

Fri 4/4

2:12 pm-11:59 pm

3 stops34h 47m

$640

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Compare providers for flights from Helena to Ontario

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 Helena to Ontario in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
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 Helena-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Helena-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Helena-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Helena-Ontario 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 Helena-Ontario 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 Helena to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Helena 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 Helena to Ontario

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

Currently, August is the cheapest month in which you can book a flight from Helena to Ontario (average of $246). Flying from Helena to Ontario in March is currently the most expensive (average of $326). 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.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated March 26, 2025.
Alaska Airlines
8.0
Very good
9,789 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Alaska Airlines
8.0
Very good
9,789 reviews
Alaska Airlines
8.0
Very good
9,789 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Delta
8.0
Very good
7,891 reviews
Alaska Airlines
8.0
Very good
9,789 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
Hawaiian Airlines
7.9
Good
2,331 reviews
Alaska Airlines
8.0
Very good
9,789 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot
United Airlines
7.4
Good
8,608 reviews
Alaska Airlines
8.0
Very good
9,789 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Seleste,Dec 2024

FAT - SAN

The attention and efficiency of the staff and the good handling of the pilot

Related info for your journey

Find useful and relevant information for your journey from Helena to Ontario. 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 to fly from Helena to Ontario one-way?

    $133 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Hawaiian Airlines and United Airlines, with prices starting from $142 and $200, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Helena to Ontario 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 Helena to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Helena to Ontario (average of $246). Flying from Helena to Ontario in March is currently the most expensive (average of $326). 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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