$255+ 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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — ONT
Dec 4 — Dec 111
Round-trip
1 adult, Economy
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Find cheap flights from Helena to Ontario with Cheapflights
1. Tell us where you want to go
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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Helena to Ontario
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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 November 4, 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 November 4, 2026.
This Mytrip deal was found by Cheapflights users on 10/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/114:49 pm -
1 stop7h 10m
Mon 12/146:00 am -
1 stop9h 12m
Deal found 10/31![Alaska Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 11/3. 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 12/101:10 pm -
2 stops10h 49m
Mon 12/145:04 pm -
1 stop4h 28m
Deal found 11/3![Delta logo]()
$374
This United Airlines deal was found by Cheapflights users on 10/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/142:23 pm -
1 stop7h 28m
Wed 11/185:00 am -
1 stop7h 40m
Deal found 10/30![United Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 10/30. 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 11/141:07 pm -
2 stops10h 53m
Wed 11/186:00 am -
1 stop5h 27m
Deal found 10/30![Delta logo]()
$424
This Alaska Airlines deal was found by Cheapflights users on 10/31. 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.
Thu 12/104:49 pm -
1 stop7h 10m
Mon 12/1411:57 am -
1 stop27h 15m
Deal found 10/31![Alaska Airlines logo]()
$426
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 12/224:18 pm -
1 stop8h 41m
Tue 12/296:00 am -
1 stop8h 41m
Deal found 11/2![Alaska Airlines logo]()
$443
This Alaska Airlines deal was found by Cheapflights users on 11/1. 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 12/104:49 pm -
1 stop7h 10m
Sun 12/136:00 am -
1 stop9h 12m
Deal found 11/1![Alaska Airlines logo]()
$446
This Gotogate deal was found by Cheapflights users on 10/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/134:49 pm -
1 stop7h 10m
Wed 12/165:36 pm -
2 stops21h 05m
Deal found 10/31![Alaska Airlines logo]()
$456
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/146:20 am -
1 stop7h 14m
Thu 12/171:38 pm -
1 stop6h 59m
Deal found 10/31![United Airlines logo]()
$469
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 12/224:18 pm -
1 stop8h 41m
Fri 1/16:00 am -
1 stop8h 41m
Deal found 11/2![Alaska Airlines logo]()
$478
This United Airlines deal was found by Cheapflights users on 11/4. 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 11/236:28 am -
1 stop7h 05m
Wed 11/251:29 pm -
1 stop7h 02m
Deal found 11/4![United Airlines logo]()
$494
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 November 4, 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 November 4, 2026.
This Gotogate deal was found by Cheapflights users on 10/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/134:49 pm -
1 stop7h 10m
Wed 12/166:00 am -
1 stop9h 12m
Deal found 10/31![Alaska Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 11/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/221:12 pm -
1 stop4h 15m
Sun 1/245:07 pm -
1 stop4h 25m
Deal found 11/2![Delta logo]()
$369
This Alaska Airlines deal was found by Cheapflights users on 10/31. 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.
Fri 1/225:00 pm -
1 stop6h 41m
Sun 1/247:00 am -
1 stop8h 23m
Deal found 10/31![Alaska Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 11/1. 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.
Tue 11/171:07 pm -
1 stop4h 17m
Sat 11/216:00 am -
1 stop5h 27m
Deal found 11/1![Delta logo]()
$419
This Delta deal was found by Cheapflights users on 11/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/167:10 am -
2 stops16h 25m
Thu 1/216:00 am -
1 stop5h 32m
Deal found 11/2![Delta logo]()
$421
This Alaska Airlines deal was found by Cheapflights users on 10/31. 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.
Thu 12/104:49 pm -
1 stop7h 10m
Mon 12/1411:57 am -
1 stop27h 15m
Deal found 10/31![Alaska Airlines logo]()
$426
This Delta deal was found by Cheapflights users on 10/30. 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 11/141:07 pm -
2 stops10h 53m
Wed 11/186:00 am -
1 stop5h 27m
Deal found 10/30![Delta logo]()
$424
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 12/224:18 pm -
1 stop8h 41m
Tue 12/296:00 am -
1 stop8h 41m
Deal found 11/2![Alaska Airlines logo]()
$443
Last-minute flights from Helena to OntarioDiscover last-minute flight deals from Helena to Ontario. Data last updated November 4, 2026 and is based on user searches.
Discover last-minute flight deals from Helena to Ontario. Data last updated November 4, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/142:23 pm -
1 stop7h 28m
Wed 11/185:00 am -
1 stop7h 40m
Deal found 10/30![United Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 10/30. 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 11/141:07 pm -
2 stops10h 53m
Wed 11/186:00 am -
1 stop5h 27m
Deal found 10/30![Delta logo]()
$424
This United Airlines deal was found by Cheapflights users on 11/4. 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 11/236:28 am -
1 stop7h 05m
Wed 11/251:29 pm -
1 stop7h 02m
Deal found 11/4![United Airlines logo]()
$494
This Delta deal was found by Cheapflights users on 11/3. 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 12/101:10 pm -
2 stops10h 49m
Mon 12/145:04 pm -
1 stop4h 28m
Deal found 11/3![Delta logo]()
$374
This Alaska Airlines deal was found by Cheapflights users on 10/31. 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.
Thu 12/104:49 pm -
1 stop7h 10m
Mon 12/1411:57 am -
1 stop27h 15m
Deal found 10/31![Alaska Airlines logo]()
$426
This Alaska Airlines deal was found by Cheapflights users on 11/1. 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 12/104:49 pm -
1 stop7h 10m
Sun 12/136:00 am -
1 stop9h 12m
Deal found 11/1![Alaska Airlines logo]()
$446
This Mytrip deal was found by Cheapflights users on 10/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/114:49 pm -
1 stop7h 10m
Mon 12/146:00 am -
1 stop9h 12m
Deal found 10/31![Alaska Airlines logo]()
$369
This Gotogate deal was found by Cheapflights users on 10/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/134:49 pm -
1 stop7h 10m
Wed 12/165:36 pm -
2 stops21h 05m
Deal found 10/31![Alaska Airlines logo]()
$456
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/146:20 am -
1 stop7h 14m
Thu 12/171:38 pm -
1 stop6h 59m
Deal found 10/31![United Airlines logo]()
$469
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 12/224:18 pm -
1 stop8h 41m
Tue 12/296:00 am -
1 stop8h 41m
Deal found 11/2![Alaska Airlines logo]()
$443
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 12/224:18 pm -
1 stop8h 41m
Fri 1/16:00 am -
1 stop8h 41m
Deal found 11/2![Alaska Airlines logo]()
$478
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 November 4, 2026.
Search for one-way flight options from Helena to Ontario. Find affordable one-way fares based on user searches. Data last updated November 4, 2026.
This Delta deal was found by Cheapflights users on 10/31. 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 11/127:00 am -
1 stop6h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Delta logo]()
$255
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/122:23 pm -
1 stop7h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![United Airlines logo]()
$283
This Expedia deal was found by Cheapflights users on 10/31. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:41 pm -
2 stops23h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Alaska Airlines logo]()
$647
This Kiwi.com deal was found by Cheapflights users on 10/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:41 pm -
3 stops54h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Multiple Airlines logo]()
$765
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 November 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $369 (Delta) |
One-way from | $255 (Delta) |
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 November 4, 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
Quickest round-trip
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Thu 11/12
7:00 am-12:17 pm
1 stop6h 17m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$255
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Thu 11/12
2:23 pm-8:51 pm
1 stop7h 28m
Ontario
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$283
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Sun 12/13
4:49 pm-10:59 pm
1 stop7h 10m
Ontario
Wed 12/16
6:00 am-4:12 pm
1 stop9h 12m
$369
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Fri 1/22
1:12 pm-4:27 pm
1 stop4h 15m
Ontario
Sun 1/24
5:07 pm-10:32 pm
1 stop4h 25m
$369
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Fri 1/22
5:00 pm-10:41 pm
1 stop6h 41m
Ontario
Sun 1/24
7:00 am-4:23 pm
1 stop8h 23m
$369
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Tue 11/17
1:07 pm-4:24 pm
1 stop4h 17m
Ontario
Sat 11/21
6:00 am-12:27 pm
1 stop5h 27m
$419
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Sat 1/16
7:10 am-10:35 pm
2 stops16h 25m
Ontario
Thu 1/21
6:00 am-12:32 pm
1 stop5h 32m
$421
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Sat 11/14
1:07 pm-11:00 pm
2 stops10h 53m
Ontario
Wed 11/18
6:00 am-12:27 pm
1 stop5h 27m
$424
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Thu 12/10
4:49 pm-10:59 pm
1 stop7h 10m
Ontario
Mon 12/14
11:57 am-4:12 pm
1 stop27h 15m
$426
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Tue 12/22
4:18 pm-11:59 pm
1 stop8h 41m
Ontario
Tue 12/29
6:00 am-3:41 pm
1 stop8h 41m
$443
Showing 1-10 of 11 resultsSorted by cheapest first
Compare providers for flights from Helena to Ontario
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 Helena to Ontario in November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- 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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