HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Helsinki

$523+ 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 11/17. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HEL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Helsinki 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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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 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 June 12, 2025.

Round-trip from

$717
(United Airlines)

One-way from

$523
(Finnair)

Popular in

July

Cheapest in

November

Average price

$1,156
From Ontario to Helsinki-Vantaa
Search Deals
One-way flight from Ontario to Helsinki-Vantaa
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($233 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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 11/97:00 amONT - HEL
2 stops20h 10mUnited Airlines
Thu 11/206:55 amHEL - ONT
2 stops23h 22mUnited Airlines
Deal found 6/10$717
This Iberia deal was found by Cheapflights users on 6/10. 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.
Sun 9/1412:46 pmONT - HEL
2 stops64h 24mIberia
Thu 9/2512:35 pmHEL - ONT
1 stop19h 41mIberia
Deal found 6/10$776
This Delta deal was found by Cheapflights users on 6/10. 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 9/159:55 amONT - HEL
2 stops20h 45mDelta
Thu 9/256:40 amHEL - ONT
2 stops27h 06mDelta
Deal found 6/10$788
This Finnair deal was found by Cheapflights users on 6/11. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1511:59 pmONT - HEL
1 stop24h 46mMultiple Airlines
Sun 9/1412:35 pmHEL - ONT
1 stop21h 24mMultiple Airlines
Deal found 6/11$860
This KAYAK deal was found by Cheapflights users on 6/11. 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.
Wed 8/206:10 amONT - HEL
1 stop18h 35mAmerican Airlines
Sun 8/3112:35 pmHEL - ONT
1 stop15h 50mAmerican Airlines
Deal found 6/11$1,000
This British Airways deal was found by Cheapflights users on 6/11. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/158:14 amONT - HEL
2 stops18h 06mBritish Airways
Sun 9/1412:35 pmHEL - ONT
1 stop16h 19mBritish Airways
Deal found 6/11$1,030

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 June 12, 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

Sun 11/9

7:00 am-1:10 pm

2 stops20h 10m

Helsinki-Vantaa

Thu 11/20

6:55 am-8:17 pm

2 stops23h 22m

$717

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Sun 9/14

12:46 pm-3:10 pm

2 stops64h 24m

Helsinki-Vantaa

Thu 9/25

12:35 pm-10:16 pm

1 stop19h 41m

$776

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Mon 9/15

9:55 am-4:40 pm

2 stops20h 45m

Helsinki-Vantaa

Tue 9/23

6:40 am-10:41 pm

2 stops26h 01m

$788

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Fri 8/15

11:59 pm-10:45 am

1 stop24h 46m

Helsinki-Vantaa

Sun 9/14

12:35 pm-11:59 pm

1 stop21h 24m

$860

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Wed 8/20

6:10 am-10:45 am

1 stop18h 35m

Helsinki-Vantaa

Sun 8/31

12:35 pm-6:25 pm

1 stop15h 50m

$1,000

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Fri 8/15

8:14 am-12:20 pm

2 stops18h 06m

Helsinki-Vantaa

Sun 9/14

12:35 pm-6:54 pm

1 stop16h 19m

$1,030

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Mon 11/17

11:00 am-10:45 am

1 stop13h 45m

$523

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Sun 7/27

6:00 am-6:55 pm

2 stops26h 55m

$540

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Sun 7/13

2:37 pm-10:45 am

1 stop34h 08m

$666

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Tue 7/29

11:59 pm-3:00 pm

1 stop29h 01m

$700

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 12 results
1
2

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 $1,081). 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 June 12, 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 June 12, 2025.
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

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
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

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
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

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
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

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.
Iberia
7.0
Good
2,776 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

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.
British Airways
6.6
Okay
7,008 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

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 United Airlines, which is currently one of the cheapest options available, starting at $540. Iberia flights start at $666 while deals on American Airlines start at $700 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 $1,081). 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
Lahti

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Helsinki

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Helsinki flights
San Francisco to Helsinki flights
San Diego to Helsinki flights
San Jose to Helsinki flights
Santa Ana to Helsinki flights
Burbank to Helsinki flights
Sacramento to Helsinki flights
Oakland to Helsinki flights
Las Vegas to Helsinki flights
Los Angeles to Rovaniemi flights
San Francisco to Rovaniemi flights
San Jose to Rovaniemi flights
San Francisco to Tampere flights
San Francisco to Turku flights
Oakland to Rovaniemi flights
Los Angeles to Kemi flights
Los Angeles to Kittilä flights
San Jose to Oulu flights
Los Angeles to Tampere flights
Los Angeles to Turku flights
Los Angeles to Kuusamo flights
Los Angeles to Ivalo flights
San Francisco to Ivalo flights
San Francisco to Vaasa flights
Reno to Helsinki flights
San Francisco to Oulu flights
San Francisco to Kuopio flights
San Francisco to Kittilä flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.