HLN - ONT

$165 Find Cheap Flights from Helena to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Helena to Ontario departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helena to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helena to Ontario, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Helena to Ontario (HLN-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Helena to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Helena to Ontario

Fri, Sep 12 - Mon, Oct 13
Alaska Airlines Logo
4:02 pm - 10:44 amHLN-ONT
19h 42m1 stop
Alaska Airlines Logo
7:47 pm - 5:41 pmONT-HLN
20h 54m1 stop
$372Alaska Airlines
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Sun, Aug 31 - Thu, Sep 4
United Airlines Logo
6:30 am - 12:32 pmHLN-ONT
7h 02m1 stop
United Airlines Logo
5:10 am - 1:30 pmONT-HLN
7h 20m1 stop
$438United Airlines
Find Deal
Fri, Sep 12 - Mon, Oct 13
Alaska Airlines Logo
4:02 pm - 12:03 amHLN-ONT
9h 01m1 stop
Alaska Airlines Logo
7:10 am - 5:41 pmONT-HLN
9h 31m2 stops
$471Alaska Airlines
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Sun, Aug 31 - Thu, Sep 4
Alaska Airlines Logo
4:02 pm - 11:59 pmHLN-ONT
8h 57m1 stop
Alaska Airlines Logo
7:40 pm - 3:21 pmONT-HLN
18h 41m1 stop
$472Alaska Airlines
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Tue, Jul 22 - Wed, Jul 23
Alaska Airlines Logo
4:09 pm - 12:15 amHLN-ONT
9h 06m1 stop
Alaska Airlines Logo
6:00 am - 3:31 pmONT-HLN
8h 31m1 stop
$524Alaska Airlines
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Fri, Sep 12 - Mon, Oct 13
Delta Logo
1:00 pm - 10:40 pmHLN-ONT
10h 40m2 stops
Delta Logo
11:29 am - 10:37 pmONT-HLN
10h 08m2 stops
$609Delta
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Tue, Jul 22 - Wed, Jul 23
United Airlines Logo
6:30 am - 5:43 pmHLN-ONT
12h 13m2 stops
United Airlines Logo
5:05 am - 1:58 pmONT-HLN
7h 53m1 stop
$746United Airlines
Find Deal
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KAYAK's insights & trends for Helena to Ontario flights

Get data-powered insights and trends into flights from Helena to Ontario to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Helena to Ontario?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Helena to Ontario were found on Alaska Airlines ($372) and United Airlines ($438).

Good to know

Cheapest flight$165
Flight from Helena to Ontario

When to book flights from Helena to Ontario

Are your dates flexible? Find out the best times to travel from Helena to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Helena to Ontario

  • What is the cheapest flight from Helena to Ontario?

    In the last 3 days, the lowest price for a flight from Helena to Ontario was $165 for a one-way ticket and $372 for a round-trip.

  • Do I need a passport to fly between Helena and Ontario?

    A passport is not required to fly from Helena to Ontario.

  • Which airports will I be using when flying from Helena to Ontario?

    Helena and Ontario are both served by 1 main airport. You will leave Helena from Helena and will be arriving at Ontario.

  • Which aircraft models fly most regularly from Helena to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Helena to Ontario?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Helena and Ontario, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Helena to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Helena to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Helena to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Helena is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Helena to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Helena with another airline. Booking your flights between Helena and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Helena to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Helena up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Helena to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Helena to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Helena to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7973 reviews
8.2Boarding
7.3Food
7.9Comfort
7.9Entertainment
8.5Crew
Airline reviews

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

4.0 OkayMathew, Jun 2025JFK - SAN
Read more Delta reviews

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Seats are much much more comfortable than United, which is what I usually fly

If I pay extra for "comfort+" I expect leg room where I can stretch my legs. I was seated with an attendant's seat blocking my feet. Knee space was fine but my feet had less room than the non-"comfort+" seats. Also, don't go cheap on food when you have flights of 3+ hours. It's insulting.

Only one side of the heafphone jack work. Crew was friendly and helpful.

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