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$841+ Cheap flights from Ontario (ONT) to Helsinki (HEL)

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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HEL
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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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 April 15, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$957
(American Airlines)

One-way from

$886
(Delta)

Popular in

July

Cheapest in

November

Average price

$801
Provider with most accurate pricing for Ontario-Helsinki-Vantaa flight deals.
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Provider most trusted by Cheapflights users for Ontario-Helsinki-Vantaa flights.
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From Ontario to Helsinki-Vantaa
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One-way flight from Ontario to Helsinki-Vantaa
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Highest demand for flights based on searches. 19% potential increase in price ($222 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 April 15, 2025.

This United Airlines deal was found by Cheapflights users on 4/15. 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.
Tue 4/221:35 pmONT - HEL
2 stops17h 15mUnited Airlines
Wed 4/306:10 amHEL - ONT
2 stops24h 11mUnited Airlines
Deal found 4/15$841
This American Airlines deal was found by Cheapflights users on 4/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2210:54 amONT - HEL
1 stop13h 51mAmerican Airlines
Fri 5/24:50 pmHEL - ONT
1 stop17h 00mAmerican Airlines
Deal found 4/15$860
This Icelandair deal was found by Cheapflights users on 4/15. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2011:39 amONT - HEL
2 stops16h 21mMultiple Airlines
Wed 9/173:00 pmHEL - ONT
2 stops18h 59mMultiple Airlines
Deal found 4/15$961
This Iberia deal was found by Cheapflights users on 4/15. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1312:53 pmONT - HEL
2 stops47h 57mIberia
Sat 12/2012:30 pmHEL - ONT
1 stop21h 18mIberia
Deal found 4/15$1,560

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 April 15, 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

Mon 5/5

2:44 pm-3:00 pm

1 stop14h 16m

Helsinki-Vantaa

Tue 5/20

12:35 pm-6:36 pm

1 stop16h 01m

$957

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Wed 8/20

11:39 am-2:00 pm

2 stops16h 21m

Helsinki-Vantaa

Wed 9/17

3:00 pm-11:59 pm

2 stops18h 59m

$961

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Sun 6/8

11:49 am-4:40 pm

2 stops18h 51m

$886

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Sat 6/7

11:59 pm-10:45 am

1 stop24h 46m

$918

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Mon 6/9

6:00 am-6:55 pm

2 stops26h 55m

$925

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Tue 5/13

8:55 am-2:00 pm

2 stops19h 05m

$2,294

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars

*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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Ontario-Helsinki flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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, November is the cheapest month in which you can book a flight from Ontario to Helsinki (average of $444). Flying from Ontario to Helsinki in June is currently the most expensive (average of $1,123). 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 April 15, 2025.

When flying from Ontario to Helsinki, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Helsinki by month

Plan your trip to Helsinki by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Helsinki ranges from 1.2 - 2.8 inches per month. August is typically the wettest month, when rainfall can reach 2.8 in. February is typically the driest time to visit Helsinki when rainfall is around 1.2 in.

Temperature in Helsinki by month

Plan your trip to Helsinki by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Helsinki, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Helsinki

Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated April 15, 2025.
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,917 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,658 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,917 reviews

Overall

8.0

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines to fly from Ontario to Helsinki one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $886. American Airlines flights start at $918 while deals on United Airlines start at $925 one-way.

  • 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, November is the cheapest month in which you can book a flight from Ontario to Helsinki (average of $444). Flying from Ontario to Helsinki in June is currently the most expensive (average of $1,123). 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 Ontario?

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

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