$175+ Cheap flights from Helena to Ontario (HLN - ONT)
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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — ONT
Oct 18 — Oct 251
Round-trip
1 adult, Economy
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Find cheap flights from Helena to Ontario with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Helena to OntarioExplore 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 September 18, 2026.
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 September 18, 2026.
This Delta deal was found by Cheapflights users on 9/17. 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 10/247:15 am -
1 stop6h 21m
Sat 10/316:00 am -
1 stop5h 28m
Deal found 9/17![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/146:28 am -
1 stop7h 05m
Tue 11/175:00 am -
1 stop7h 40m
Deal found 9/15![United Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Thu 11/192:23 pm -
1 stop7h 28m
Sun 12/65:00 am -
1 stop7h 52m
Deal found 9/18![United Airlines logo]()
$459
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/144:41 pm -
1 stop19h 37m
Tue 11/174:06 pm -
2 stops22h 58m
Deal found 9/15![Alaska Airlines logo]()
$483
This Gotogate deal was found by Cheapflights users on 9/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:18 pm -
1 stop7h 06m
Tue 10/66:02 am -
1 stop9h 47m
Deal found 9/16![Alaska Airlines logo]()
$488
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 11/164:41 pm -
1 stop7h 25m
Fri 11/208:59 pm -
1 stop18h 17m
Deal found 9/16![Alaska Airlines logo]()
$536
This Gotogate deal was found by Cheapflights users on 9/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:26 pm -
2 stops24h 39m
Sat 10/317:25 am -
2 stops8h 19m
Deal found 9/17![Alaska Airlines logo]()
$547
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 12/104:55 pm -
1 stop7h 04m
Fri 12/186:00 am -
1 stop8h 41m
Deal found 9/15![Alaska Airlines logo]()
$596
This Gotogate deal was found by Cheapflights users on 9/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:26 pm -
1 stop7h 16m
Sun 10/182:13 pm -
1 stop25h 36m
Deal found 9/18![Alaska Airlines logo]()
$603
Best flights from Helena to OntarioDiscover carefully curated flight deals from Helena to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
Discover carefully curated flight deals from Helena to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
This Delta deal was found by Cheapflights users on 9/17. 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 10/247:15 am -
1 stop6h 21m
Sat 10/316:00 am -
1 stop5h 28m
Deal found 9/17![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/16. 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 11/146:28 am -
1 stop7h 05m
Tue 11/175:00 am -
1 stop7h 40m
Deal found 9/16![United Airlines logo]()
$429
This Alaska Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 11/144:41 pm -
1 stop19h 37m
Tue 11/174:06 pm -
2 stops22h 58m
Deal found 9/17![Alaska Airlines logo]()
$483
This United Airlines deal was found by Cheapflights users on 9/18. 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.
Thu 11/192:23 pm -
1 stop7h 28m
Sun 12/65:00 am -
1 stop7h 52m
Deal found 9/18![United Airlines logo]()
$459
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 12/114:55 pm -
1 stop7h 04m
Fri 12/186:00 am -
1 stop8h 41m
Deal found 9/15![Alaska Airlines logo]()
$596
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 10/62:30 pm -
1 stop7h 28m
Sat 10/241:22 pm -
1 stop6h 46m
Deal found 9/16![United Airlines logo]()
$638
This Alaska Airlines deal was found by Cheapflights users on 9/18. 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 11/194:41 pm -
1 stop7h 25m
Sun 12/65:36 pm -
2 stops21h 42m
Deal found 9/18![Alaska Airlines logo]()
$725
This Gotogate deal was found by Cheapflights users on 9/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/95:26 pm -
2 stops23h 36m
Mon 10/125:45 pm -
2 stops22h 04m
Deal found 9/14![Alaska Airlines logo]()
$870
This Priceline deal was found by Cheapflights users on 9/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/204:18 pm -
1 stop8h 38m
Thu 12/247:00 am -
2 stops7h 41m
Deal found 9/16![Alaska Airlines logo]()
$1,019
Last-minute flights from Helena to OntarioDiscover last-minute flight deals from Helena to Ontario. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from Helena to Ontario. Data last updated September 18, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/17. 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 9/232:26 pm -
1 stop7h 27m
Wed 9/301:24 pm -
1 stop6h 54m
Deal found 9/17![United Airlines logo]()
$634
This Delta deal was found by Cheapflights users on 9/14. 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 9/247:15 am -
1 stop5h 59m
Thu 9/245:15 pm -
1 stop4h 09m
Deal found 9/14![Delta logo]()
$821
This Gotogate deal was found by Cheapflights users on 9/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:18 pm -
1 stop7h 06m
Tue 10/66:02 am -
1 stop9h 47m
Deal found 9/16![Alaska Airlines logo]()
$488
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Tue 10/62:30 pm -
1 stop7h 28m
Sat 10/241:22 pm -
1 stop6h 46m
Deal found 9/16![United Airlines logo]()
$638
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Fri 10/96:25 am -
1 stop15h 33m
Mon 10/125:00 am -
1 stop7h 48m
Deal found 9/14![United Airlines logo]()
$771
This Gotogate deal was found by Cheapflights users on 9/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:26 pm -
1 stop7h 16m
Sun 10/182:13 pm -
1 stop25h 36m
Deal found 9/18![Alaska Airlines logo]()
$603
This Delta deal was found by Cheapflights users on 9/17. 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 10/247:15 am -
1 stop6h 21m
Sat 10/316:00 am -
1 stop5h 28m
Deal found 9/17![Delta logo]()
$349
This Gotogate deal was found by Cheapflights users on 9/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:26 pm -
2 stops24h 39m
Sat 10/317:25 am -
2 stops8h 19m
Deal found 9/17![Alaska Airlines logo]()
$547
One-way flights from Helena to OntarioSearch for one-way flight options from Helena to Ontario. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
Search for one-way flight options from Helena to Ontario. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/85:26 pm -
1 stop7h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Alaska Airlines logo]()
$175
This Priceline deal was found by Cheapflights users on 9/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:18 pm -
1 stop7h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Alaska Airlines logo]()
$245
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 9/246:25 am -
1 stop7h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![United Airlines logo]()
$289
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/95:26 pm -
1 stop7h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Alaska Airlines logo]()
$455
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:18 pm -
3 stops40h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$802
Find 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 September 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $349 (Delta) |
One-way from | $175 (Priceline) |
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 7,457,451 searches. Data last updated September 18, 2026.
Use the filters below to find and compare flights from Helena to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Thu 10/8
5:26 pm-11:42 pm
1 stop7h 16m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$175
Quickest round-trip
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Thu 9/24
5:18 pm-11:24 pm
1 stop7h 06m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$245
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Thu 9/24
6:25 am-12:46 pm
1 stop7h 21m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$289
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Sat 10/24
7:15 am-12:36 pm
1 stop6h 21m
Ontario
Sat 10/31
6:00 am-12:28 pm
1 stop5h 28m
$349
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Sat 11/14
6:28 am-12:33 pm
1 stop7h 05m
Ontario
Tue 11/17
5:00 am-1:40 pm
1 stop7h 40m
$429
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Thu 11/19
2:23 pm-8:51 pm
1 stop7h 28m
Ontario
Sun 12/6
5:00 am-1:52 pm
1 stop7h 52m
$459
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Sat 11/14
4:41 pm-11:18 am
1 stop19h 37m
Ontario
Tue 11/17
4:06 pm-4:04 pm
2 stops22h 58m
$483
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Fri 10/9
5:26 pm-4:02 pm
2 stops23h 36m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$528
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Fri 12/11
4:55 pm-10:59 pm
1 stop7h 04m
Ontario
Fri 12/18
6:00 am-3:41 pm
1 stop8h 41m
$596
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Tue 10/6
2:30 pm-8:58 pm
1 stop7h 28m
Ontario
Sat 10/24
1:22 pm-9:08 pm
1 stop6h 46m
$638
Showing 1-10 of 14 resultsSorted by cheapest first
- 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.
HLN-ONT
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.
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.
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