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Helena

$267+ Cheap flights from Ontario to Helena (ONT - HLN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HLN
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Ontario to Helena

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Helena (HLN). 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 3, 2025.

Round-trip from

$267
(Delta)

Popular in

February

Cheapest in

June

Average price

$453
From Ontario to Helena
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($143 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($35 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 Ontario to Helena

Cheapest flights from Ontario to Helena
Explore the most affordable flight options available from Ontario to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Delta deal was found by Cheapflights users on 6/30. 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.
Sat 8/306:05 amONT - HLN
1 stop5h 15mDelta
Wed 9/35:50 amHLN - ONT
1 stop4h 05mDelta
Deal found 6/30$267
This United Airlines deal was found by Cheapflights users on 7/2. 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 8/35:05 amONT - HLN
1 stop7h 53mUnited Airlines
Wed 8/62:34 pmHLN - ONT
1 stop7h 20mUnited Airlines
Deal found 7/2$399
This Alaska Airlines deal was found by Cheapflights users on 7/2. 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 9/47:40 pmONT - HLN
1 stop18h 41mAlaska Airlines
Sun 9/74:02 pmHLN - ONT
1 stop19h 42mAlaska Airlines
Deal found 7/2$454

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Helena 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 3, 2025.
Use the filters below to find and compare flights from Ontario to Helena that are best for you.

Fly from

Ontario

Fly to

Helena

Route

Depart

Return

Price

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Sat 8/30

6:05 am-12:20 pm

1 stop5h 15m

Helena

Wed 9/3

5:50 am-8:55 am

1 stop4h 05m

$267

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Sun 8/3

5:05 am-1:58 pm

1 stop7h 53m

Helena

Wed 8/6

2:34 pm-8:54 pm

1 stop7h 20m

$399

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Thu 9/4

7:40 pm-3:21 pm

1 stop18h 41m

Helena

Sun 9/7

4:02 pm-10:44 am

1 stop19h 42m

$454

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Best time to book a flight from Ontario to Helena

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

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

Currently, February is the cheapest month in which you can book a flight from Ontario to Helena (average of $353). Flying from Ontario to Helena in July is currently the most expensive (average of $545). 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 Helena

Get insights into the airlines that provide service to Helena. 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 Helena. Reviews last updated July 3, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and United Airlines from Ontario to Helena. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

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

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

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
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

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
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Crew

8.5

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 Helena. 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 Helena round-trip?

    Flying on Delta is currently your cheapest option to Helena, with prices starting at $267. Additional round-trip tickets that might be worth considering are offered by United Airlines and Alaska Airlines, with the lowest prices starting at $399 and $454, respectively.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Ontario to Helena (average of $353). Flying from Ontario to Helena in July is currently the most expensive (average of $545). 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 Ontario to Helena

Discover the top airline that operate flights from Ontario to Helena. 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 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$205Average$410FlexibilityNo cancel feeOn-timeN/A

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