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Helena

$295+ 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 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HLN
Feb 10 — Feb 171
Tue 2/10
Tue 2/17
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 January 11, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$323
(Alaska Airlines)

One-way from

$264
(Alaska Airlines)

Popular in

February

Cheapest in

March

Average price

$616
Provider with most accurate pricing for Ontario-Helena flight deals.
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Provider most trusted by Cheapflights users for Ontario-Helena flights.
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From Ontario to Helena
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One-way flight from Ontario to Helena
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Highest demand for flights based on searches. 18% potential increase in price ($95 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 11, 2026.

This Delta deal was found by Cheapflights users on 1/11. 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 2/76:00 amONT - HLN
1 stop5h 27mDelta
Wed 2/111:10 pmHLN - ONT
1 stop4h 05mDelta
Deal found 1/11$295
This Alaska Airlines deal was found by Cheapflights users on 1/11. 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 2/1011:53 amONT - HLN
1 stop5h 18mAlaska Airlines
Tue 2/174:36 pmHLN - ONT
1 stop7h 08mAlaska Airlines
Deal found 1/11$315
This United Airlines deal was found by Cheapflights users on 1/11. 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.
Mon 2/165:00 amONT - HLN
1 stop7h 40mUnited Airlines
Sat 2/212:25 pmHLN - ONT
1 stop7h 25mUnited Airlines
Deal found 1/11$322
This Alaska Airlines deal was found by Cheapflights users on 1/10. 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.
Fri 2/64:03 pmONT - HLN
1 stop25h 08mAlaska Airlines
Mon 2/96:48 pmHLN - ONT
1 stop21h 20mAlaska Airlines
Deal found 1/10$323
This Alaska Airlines deal was found by Cheapflights users on 1/10. 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.
Fri 2/206:14 amONT - HLN
1 stop8h 45mAlaska Airlines
Tue 2/244:36 pmHLN - ONT
1 stop7h 08mAlaska Airlines
Deal found 1/10$343
This Delta deal was found by Cheapflights users on 1/11. 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 7/25:05 pmONT - HLN
1 stop4h 29mDelta
Tue 7/75:45 amHLN - ONT
1 stop4h 16mDelta
Deal found 1/11$384
This Alaska Airlines deal was found by Cheapflights users on 1/11. 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.
Fri 2/136:14 amONT - HLN
1 stop8h 45mAlaska Airlines
Mon 2/164:36 pmHLN - ONT
1 stop19h 32mAlaska Airlines
Deal found 1/11$393
This Alaska Airlines deal was found by Cheapflights users on 1/11. 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.
Mon 2/167:37 pmONT - HLN
2 stops19h 22mAlaska Airlines
Sat 2/214:36 pmHLN - ONT
1 stop7h 56mAlaska Airlines
Deal found 1/11$395
This Alaska Airlines deal was found by Cheapflights users on 1/10. 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.
Fri 4/107:00 amONT - HLN
2 stops9h 45mAlaska Airlines
Mon 4/136:22 pmHLN - ONT
1 stop6h 37mAlaska Airlines
Deal found 1/10$418
This Alaska Airlines deal was found by Cheapflights users on 1/11. 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.
Fri 6/54:03 pmONT - HLN
1 stop23h 03mAlaska Airlines
Mon 6/84:43 pmHLN - ONT
1 stop8h 15mAlaska Airlines
Deal found 1/11$456

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 January 11, 2026.
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 2/7

6:00 am-12:27 pm

1 stop5h 27m

Helena

Wed 2/11

1:10 pm-4:15 pm

1 stop4h 05m

$295

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Tue 2/10

11:53 am-6:11 pm

1 stop5h 18m

Helena

Tue 2/17

4:36 pm-10:44 pm

1 stop7h 08m

$315

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Mon 2/16

5:00 am-1:40 pm

1 stop7h 40m

Helena

Sat 2/21

2:25 pm-8:50 pm

1 stop7h 25m

$322

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Thu 2/19

6:14 am-3:59 pm

1 stop8h 45m

Helena

Tue 2/24

4:36 pm-10:44 pm

1 stop7h 08m

$323

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Fri 2/6

4:03 pm-6:11 pm

1 stop25h 08m

Helena

Mon 2/9

6:48 pm-3:08 pm

1 stop21h 20m

$323

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Fri 2/20

6:14 am-3:59 pm

1 stop8h 45m

Helena

Tue 2/24

4:36 pm-10:44 pm

1 stop7h 08m

$343

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Thu 3/12

6:14 am-3:59 pm

1 stop8h 45m

Helena

Sun 3/15

4:36 pm-11:08 am

1 stop19h 32m

$343

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Thu 7/2

5:05 pm-10:34 pm

1 stop4h 29m

Helena

Tue 7/7

5:45 am-9:01 am

1 stop4h 16m

$384

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Fri 2/13

6:14 am-3:59 pm

1 stop8h 45m

Helena

Mon 2/16

4:36 pm-11:08 am

1 stop19h 32m

$393

OntarioHelena

ONT - HLN

ONTHLN

Ontario

Mon 2/16

7:37 pm-3:59 pm

2 stops19h 22m

Helena

Sat 2/21

4:36 pm-11:32 pm

1 stop7h 56m

$395

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/10

Showing 1-10 of 16 results
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Compare providers for flights from Ontario to Helena

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 Helena in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Ontario-Helena flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Helena flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Helena flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Helena 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-Helena 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 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, May is the cheapest month in which you can book a flight from Ontario to Helena (average of $90). Flying from Ontario to Helena in April is currently the most expensive (average of $204). 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 January 11, 2026.
Read reviews from past customers who have flown Delta 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.
Delta
7.9
Good
8,034 reviews

Entertainment

7.8

Boarding

8.1

Overall

7.9

Food

7.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
Delta
7.9
Good
8,034 reviews
Delta
7.9
Good
8,034 reviews

Entertainment

7.8

Boarding

8.1

Overall

7.9

Food

7.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

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.

  • How long is the flight from Ontario to Helena?

    Airlines like Delta, Alaska Airlines, and United Airlines fly from Ontario to Helena in about 5h 18m. The time it takes to get you to your destination can typically vary by up to 2h 22m. There are 915 mi between Ontario and Helena. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Ontario to Helena round-trip?

    Flying on Delta is currently your cheapest option to Helena, with prices starting at $184.

  • 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, May is the cheapest month in which you can book a flight from Ontario to Helena (average of $90). Flying from Ontario to Helena in April is currently the most expensive (average of $204). 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 January 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$205Average$410FlexibilityNo cancel feeOn-timeN/A

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