$165+ Cheap flights from Helena to Ontario (HLN - ONT)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — ONT
Sep 4 — Sep 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 August 5, 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 August 5, 2026.
This Delta deal was found by Cheapflights users on 8/2. 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.
Mon 11/21:08 pm -
1 stop4h 15m
Sat 11/75:03 pm -
1 stop4h 26m
Deal found 8/2![Delta logo]()
$371
This Delta deal was found by Cheapflights users on 8/2. 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 8/296:50 am -
1 stop6h 26m
Sat 8/295:05 pm -
1 stop4h 25m
Deal found 8/2![Delta logo]()
$373
This Delta deal was found by Cheapflights users on 8/2. 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.
Wed 11/41:08 pm -
2 stops10h 35m
Tue 11/105:11 pm -
1 stop4h 15m
Deal found 8/2![Delta logo]()
$376
This Booking.com deal was found by Cheapflights users on 8/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/35:26 pm -
1 stop17h 51m
Tue 10/62:13 pm -
1 stop25h 36m
Deal found 8/2![Alaska Airlines logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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.
Fri 9/255:18 pm -
1 stop7h 06m
Tue 9/297:12 am -
2 stops8h 29m
Deal found 8/2![Alaska Airlines logo]()
$381
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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.
Wed 11/44:41 pm -
1 stop7h 13m
Sat 11/712:00 pm -
1 stop27h 04m
Deal found 8/2![Alaska Airlines logo]()
$386
This Delta deal was found by Cheapflights users on 8/2. 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.
Thu 11/57:15 am -
1 stop6h 06m
Mon 11/96:00 am -
1 stop5h 22m
Deal found 8/2![Delta logo]()
$396
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 9/245:18 pm -
1 stop7h 06m
Mon 9/287:59 pm -
1 stop19h 42m
Deal found 8/2![Alaska Airlines logo]()
$407
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sat 8/222:35 pm -
1 stop7h 18m
Tue 8/251:18 pm -
1 stop7h 12m
Deal found 7/31![United Airlines logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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.
Mon 9/215:18 pm -
1 stop7h 06m
Tue 9/296:02 am -
1 stop9h 39m
Deal found 8/2![Alaska Airlines logo]()
$426
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 August 5, 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 August 5, 2026.
This Delta deal was found by Cheapflights users on 8/2. 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.
Mon 11/21:08 pm -
1 stop4h 15m
Mon 11/96:00 am -
1 stop5h 22m
Deal found 8/2![Delta logo]()
$371
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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.
Fri 9/255:18 pm -
1 stop7h 06m
Tue 9/296:02 am -
1 stop9h 39m
Deal found 8/2![Alaska Airlines logo]()
$376
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Wed 9/96:15 am -
1 stop7h 35m
Sun 9/135:00 am -
1 stop7h 45m
Deal found 8/4![United Airlines logo]()
$409
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 9/245:18 pm -
1 stop7h 06m
Mon 9/287:59 pm -
1 stop19h 42m
Deal found 8/2![Alaska Airlines logo]()
$407
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sat 8/222:35 pm -
1 stop7h 18m
Tue 8/251:18 pm -
1 stop7h 12m
Deal found 7/31![United Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 8/2. 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.
Tue 11/31:08 pm -
2 stops10h 35m
Mon 11/97:04 am -
2 stops14h 22m
Deal found 8/2![Delta logo]()
$474
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 9/105:18 pm -
2 stops23h 52m
Tue 9/154:50 pm -
2 stops22h 51m
Deal found 8/2![Alaska Airlines logo]()
$499
This Delta deal was found by Cheapflights users on 7/31. 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.
Sun 8/95:40 am -
1 stop4h 12m
Mon 8/175:05 pm -
1 stop4h 25m
Deal found 7/31![Delta logo]()
$526
This KAYAK deal was found by Cheapflights users on 8/3. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/812:55 pm -
1 stop4h 29m
Mon 8/105:05 pm -
1 stop4h 25m
Deal found 8/3![Delta logo]()
$631
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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.
Sat 8/225:32 pm -
2 stops17h 19m
Tue 8/257:12 am -
2 stops8h 22m
Deal found 7/31![Alaska Airlines logo]()
$730
This Delta deal was found by Cheapflights users on 8/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/95:40 am -
1 stop4h 12m
Tue 8/116:00 am -
1 stop5h 15m
Deal found 8/4![Delta logo]()
$668
Last-minute flights from Helena to OntarioDiscover last-minute flight deals from Helena to Ontario. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from Helena to Ontario. Data last updated August 5, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sat 8/222:35 pm -
1 stop7h 18m
Tue 8/251:18 pm -
1 stop7h 12m
Deal found 7/31![United Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 8/2. 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.
Sun 8/235:40 am -
1 stop4h 12m
Sat 8/296:00 am -
1 stop5h 15m
Deal found 8/2![Delta logo]()
$371
This Delta deal was found by Cheapflights users on 8/2. 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.
Tue 8/2512:55 pm -
2 stops10h 50m
Sat 8/295:05 pm -
1 stop4h 25m
Deal found 8/2![Delta logo]()
$376
This Delta deal was found by Cheapflights users on 8/2. 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.
Thu 8/2712:55 pm -
2 stops10h 50m
Sat 8/295:05 pm -
1 stop4h 25m
Deal found 8/2![Delta logo]()
$430
This Delta deal was found by Cheapflights users on 8/2. 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 8/296:50 am -
1 stop6h 26m
Sat 8/295:05 pm -
1 stop4h 25m
Deal found 8/2![Delta logo]()
$373
This Booking.com deal was found by Cheapflights users on 8/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:18 pm -
1 stop7h 06m
Mon 9/1412:12 pm -
1 stop27h 29m
Deal found 8/2![Alaska Airlines logo]()
$429
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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.
Mon 9/215:18 pm -
1 stop7h 06m
Tue 9/296:02 am -
1 stop9h 39m
Deal found 8/2![Alaska Airlines logo]()
$426
This Delta deal was found by Cheapflights users on 8/2. 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.
Tue 9/2212:57 pm -
2 stops10h 43m
Tue 9/296:00 am -
1 stop5h 17m
Deal found 8/2![Delta logo]()
$401
This Delta deal was found by Cheapflights users on 8/2. 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.
Wed 9/2312:57 pm -
1 stop4h 38m
Tue 9/295:15 pm -
1 stop4h 09m
Deal found 8/2![Delta logo]()
$396
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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 9/245:18 pm -
1 stop7h 06m
Mon 9/287:59 pm -
1 stop19h 42m
Deal found 8/2![Alaska Airlines logo]()
$407
This Alaska Airlines deal was found by Cheapflights users on 8/2. 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.
Fri 9/255:18 pm -
1 stop7h 06m
Tue 9/297:12 am -
2 stops8h 29m
Deal found 8/2![Alaska Airlines logo]()
$381
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 August 5, 2026.
Search for one-way flight options from Helena to Ontario. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This Alaska Airlines deal was found by Cheapflights users on 8/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:18 pm -
1 stop7h 06m
Deal found 8/3![Alaska Airlines logo]()
$165
This Delta deal was found by Cheapflights users on 8/3. 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 9/1012:57 pm -
1 stop4h 38m
Deal found 8/3![Delta logo]()
$187
This Booking.com deal was found by Cheapflights users on 7/31. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:18 pm -
1 stop18h 58m
Deal found 7/31![Alaska Airlines logo]()
$191
This Delta deal was found by Cheapflights users on 7/31. 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.
Wed 9/2312:57 pm -
2 stops10h 43m
Deal found 7/31![Delta logo]()
$192
This Alaska Airlines deal was found by Cheapflights users on 8/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:11 pm -
1 stop7h 13m
Deal found 8/3![Alaska Airlines logo]()
$215
This Delta deal was found by Cheapflights users on 8/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/135:40 am -
1 stop4h 12m
Deal found 8/4![Delta logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Wed 9/235:18 pm -
3 stops31h 29m
Deal found 7/31![Multiple Airlines logo]()
$475
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 August 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $329 (Booking.com) |
One-way from | $165 (Alaska Airlines) |
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 2,558,603 searches. Data last updated August 5, 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
Mon 11/2
1:08 pm-4:23 pm
1 stop4h 15m
Ontario
Mon 11/9
6:00 am-12:22 pm
1 stop5h 22m
$371
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Fri 9/25
5:18 pm-11:24 pm
1 stop7h 06m
Ontario
Tue 9/29
6:02 am-4:41 pm
1 stop9h 39m
$376
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Thu 9/24
5:18 pm-11:24 pm
1 stop7h 06m
Ontario
Mon 9/28
7:59 pm-4:41 pm
1 stop19h 42m
$407
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Wed 9/9
6:15 am-12:50 pm
1 stop7h 35m
Ontario
Sun 9/13
5:00 am-1:45 pm
1 stop7h 45m
$409
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Sat 8/22
2:35 pm-8:53 pm
1 stop7h 18m
Ontario
Tue 8/25
1:18 pm-9:30 pm
1 stop7h 12m
$409
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Tue 11/3
1:08 pm-10:43 pm
2 stops10h 35m
Ontario
Mon 11/9
7:04 am-10:26 pm
2 stops14h 22m
$474
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Thu 9/10
5:18 pm-4:10 pm
2 stops23h 52m
Ontario
Tue 9/15
4:50 pm-4:41 pm
2 stops22h 51m
$499
Quickest round-trip
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Sun 8/9
5:40 am-8:52 am
1 stop4h 12m
Ontario
Mon 8/17
5:05 pm-10:30 pm
1 stop4h 25m
$526
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Sat 8/8
12:55 pm-4:24 pm
1 stop4h 29m
Ontario
Mon 8/10
5:05 pm-10:30 pm
1 stop4h 25m
$631
HelenaOntario
HLN Helena - ONT Ontario
HLNONT
Helena
Sun 8/9
5:40 am-8:52 am
1 stop4h 12m
Ontario
Tue 8/11
6:00 am-12:15 pm
1 stop5h 15m
$668
Showing 1-10 of 17 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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