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$200+ 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — ONT
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$363
(Alaska Airlines)

One-way from

$200
(United Airlines)

Popular in

December

Cheapest in

April

Average price

$368
From Helena to Ontario
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One-way flight from Helena to Ontario
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Highest demand for flights based on searches. 20% potential increase in price ($108 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 31, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 10/86:18 pmHLN - ONT
1 stop6h 45mAlaska Airlines
Thu 10/231:31 pmONT - HLN
1 stop27h 10mAlaska Airlines
Deal found 7/31$363
This Delta deal was found by Cheapflights users on 7/31. 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 8/285:50 amHLN - ONT
1 stop4h 05mDelta
Thu 9/44:50 pmONT - HLN
1 stop4h 23mDelta
Deal found 7/31$368
This United Airlines deal was found by Cheapflights users on 7/29. 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.
Sat 8/306:30 amHLN - ONT
1 stop7h 02mUnited Airlines
Sun 9/75:10 amONT - HLN
1 stop7h 20mUnited Airlines
Deal found 7/29$392

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 July 31, 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

Wed 10/8

6:18 pm-12:03 am

1 stop6h 45m

Ontario

Thu 10/23

1:31 pm-5:41 pm

1 stop27h 10m

$363

HelenaOntario

HLN - ONT

HLNONT

Helena

Thu 8/28

5:50 am-8:55 am

1 stop4h 05m

Ontario

Thu 9/4

4:50 pm-10:13 pm

1 stop4h 23m

$368

HelenaOntario

HLN - ONT

HLNONT

Helena

Sat 8/30

6:30 am-12:32 pm

1 stop7h 02m

Ontario

Sun 9/7

5:10 am-1:30 pm

1 stop7h 20m

$392

HelenaOntario

HLN - ONT

HLNONT

Helena

Mon 8/25

2:30 pm-8:43 pm

1 stop7h 13m

$200

HelenaOntario

HLN - ONT

HLNONT

Helena

Mon 8/25

4:02 pm-9:26 am

2 stops18h 24m

$283

HelenaOntario

HLN - ONT

HLNONT

Helena

Sun 12/21

12:50 pm-4:16 pm

1 stop4h 26m

$340

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 $328). 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.

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 July 31, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and United Airlines from Helena to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

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
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

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
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Entertainment

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 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 flying from Helena to Ontario round-trip?

    Flying on Alaska Airlines is currently your cheapest option to Ontario, with prices starting at $363. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $368 and $392, respectively.

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

    $200 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Alaska Airlines and Delta, with prices starting from $283 and $340, 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 $328). 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.

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Top airline flying from Helena to Ontario

Discover the top airline that operate flights from Helena to Ontario. 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 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$306Average$403FlexibilityNo cancel feeOn-timeN/A

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