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$532+ Cheap flights from Ontario (ONT) to Helsinki (HEL)

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 11/18. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HEL
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find flight deals from Ontario to Helsinki

Cheapest flights from Ontario to Helsinki
Explore the most affordable flight options available from Ontario to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This United Airlines deal was found by Cheapflights users on 10/29. 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 12/31:34 pmONT - HEL
2 stops16h 56mUnited Airlines
Wed 12/106:55 amHEL - ONT
2 stops23h 47mUnited Airlines
Deal found 10/29$785
This United Airlines deal was found by Cheapflights users on 10/29. 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 12/17:00 amONT - HEL
2 stops20h 10mUnited Airlines
Mon 12/812:45 pmHEL - ONT
2 stops20h 04mUnited Airlines
Deal found 10/29$837
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.
Sun 12/75:05 amONT - HEL
2 stops25h 35mUnited Airlines
Thu 12/116:55 amHEL - ONT
2 stops24h 54mUnited Airlines
Deal found 10/30$845
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 11/151:29 pmONT - HEL
2 stops19h 21mUnited Airlines
Wed 11/191:55 pmHEL - ONT
3 stops42h 56mUnited Airlines
Deal found 10/30$871
This American Airlines deal was found by Cheapflights users on 10/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2410:47 amONT - HEL
1 stop13h 58mAmerican Airlines
Mon 12/812:30 pmHEL - ONT
1 stop15h 47mAmerican Airlines
Deal found 10/29$903
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.
Mon 11/37:00 amONT - HEL
2 stops20h 10mUnited Airlines
Sat 11/226:55 amHEL - ONT
2 stops23h 49mUnited Airlines
Deal found 10/30$1,076
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.
Fri 11/77:00 amONT - HEL
2 stops20h 05mUnited Airlines
Sun 11/91:50 pmHEL - ONT
2 stops19h 01mUnited Airlines
Deal found 10/30$1,096
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 11/299:35 pmONT - HEL
2 stops33h 05mUnited Airlines
Sat 12/61:50 pmHEL - ONT
3 stops42h 59mUnited Airlines
Deal found 10/30$1,103
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.
Mon 11/37:00 amONT - HEL
2 stops23h 40mUnited Airlines
Sun 11/301:50 pmHEL - ONT
2 stops40h 54mUnited Airlines
Deal found 10/30$1,198
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1510:47 amONT - HEL
1 stop13h 58mAmerican Airlines
Wed 11/1912:30 pmHEL - ONT
1 stop15h 51mAmerican Airlines
Deal found 10/30$1,254

Cheap flight deals from Ontario to Helsinki

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Helsinki (HEL). 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$752
(Finnair)

One-way from

$532
(Delta)

Popular in

June

Cheapest in

February

Average price

$810
Provider with most accurate pricing for Ontario-Helsinki-Vantaa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Helsinki-Vantaa flights.
Search Deals
From Ontario to Helsinki-Vantaa
Search Deals
One-way flight from Ontario to Helsinki-Vantaa
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($156 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Helsinki 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 October 30, 2025.
Use the filters below to find and compare flights from Ontario to Helsinki that are best for you.

Fly from

Ontario

Fly to

Helsinki

Route

Depart

Return

Price

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Wed 12/3

1:34 pm-4:30 pm

2 stops16h 56m

Helsinki-Vantaa

Wed 12/10

6:55 am-8:42 pm

2 stops23h 47m

$785

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Wed 4/1

4:15 pm-6:55 pm

2 stops16h 40m

Helsinki-Vantaa

Sun 4/12

6:30 am-8:17 pm

2 stops23h 47m

$824

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Mon 12/1

7:00 am-1:10 pm

2 stops20h 10m

Helsinki-Vantaa

Mon 12/8

12:45 pm-10:49 pm

2 stops20h 04m

$837

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Sun 12/7

5:05 am-4:40 pm

2 stops25h 35m

Helsinki-Vantaa

Thu 12/11

6:55 am-9:49 pm

2 stops24h 54m

$845

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Sat 11/15

1:29 pm-6:50 pm

2 stops19h 21m

Helsinki-Vantaa

Wed 11/19

1:55 pm-10:51 pm

3 stops42h 56m

$871

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Mon 11/24

10:47 am-10:45 am

1 stop13h 58m

Helsinki-Vantaa

Mon 12/8

12:30 pm-6:17 pm

1 stop15h 47m

$903

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Fri 3/27

5:40 am-6:50 pm

2 stops28h 10m

Helsinki-Vantaa

Tue 3/31

7:05 am-8:17 pm

2 stops23h 12m

$1,035

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Fri 3/27

6:46 am-10:45 am

1 stop18h 59m

Helsinki-Vantaa

Tue 3/31

12:35 pm-11:43 pm

1 stop21h 08m

$1,070

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Tue 11/18

12:16 pm-4:25 pm

2 stops18h 09m

$532

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Wed 11/19

10:47 am-10:45 am

1 stop13h 58m

$533

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 19 results
1
2

Compare providers for flights from Ontario to Helsinki

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 Helsinki in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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-Helsinki flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Helsinki flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Helsinki flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Helsinki 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-Helsinki 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 Helsinki

Have a flexible travel schedule? Discover the best time to fly to Helsinki 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 Helsinki

What is the cheapest month to book a flight from Ontario to Helsinki?

Currently, September is the cheapest month in which you can book a flight from Ontario to Helsinki (average of $476). Flying from Ontario to Helsinki in June is currently the most expensive (average of $983). 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.

What is the cheapest time of day to fly from ONT to HEL?

Find hourly flight availability from Ontario to Helsinki. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 74% on flights from Ontario to Helsinki by exploring options for tickets in the evening.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Helsinki. 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 Helsinki?

    United Airlines can get you from Ontario to Helsinki in just under 16h 56m. Your travel time can differ by up to . The distance between Ontario and Helsinki is about 5575 mi.

  • Can I find deals for flights from Ontario to Helsinki that include hotel bookings?

    Yes. In addition to deals on Ontario to Helsinki flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Helsinki?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Helsinki.

  • Can I find deals for business class flights from Ontario to Helsinki?

    Yes. Cheapflights offers flight deals from Ontario to Helsinki 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 Helsinki?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Helsinki (average of $476). Flying from Ontario to Helsinki in June is currently the most expensive (average of $983). 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.

See more FAQs

Traveling to a place near Helsinki?

Book flights to Helsinki if you plan to visit one of these locations
Vantaa
Lahti

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