HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Helsinki

$544+ 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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HEL
Mar 31 — Apr 71
Mon 3/31
Mon 4/7
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 March 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$608
(American Airlines)

One-way from

$544
(American Airlines)

Popular in

July

Cheapest in

November

Average price

$783
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. 21% potential increase in price ($239 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 26, 2025.

This American Airlines deal was found by Cheapflights users on 3/24. 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.
Sun 4/2710:54 amONT - HEL
1 stop13h 51mAmerican Airlines
Tue 5/1312:35 pmHEL - ONT
1 stop16h 01mAmerican Airlines
Deal found 3/24$608
This United Airlines deal was found by Cheapflights users on 3/24. 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 12/210:40 amONT - HEL
2 stops22h 00mUnited Airlines
Tue 12/96:50 amHEL - ONT
2 stops21h 10mUnited Airlines
Deal found 3/24$662
This Finnair deal was found by Cheapflights users on 3/24. 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.
Thu 5/297:30 amONT - HEL
1 stop21h 30mMultiple Airlines
Wed 6/184:50 pmHEL - ONT
1 stop16h 12mMultiple Airlines
Deal found 3/24$679
This British Airways deal was found by Cheapflights users on 3/24. 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.
Thu 5/294:35 pmONT - HEL
2 stops18h 25mBritish Airways
Wed 6/182:05 pmHEL - ONT
2 stops19h 54mBritish Airways
Deal found 3/24$1,028
This flugladen.de deal was found by Cheapflights users on 3/25. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/212:45 pmONT - HEL
1 stop16h 15mIberia
Sat 6/712:35 pmHEL - ONT
1 stop16h 26mIberia
Deal found 3/25$1,424

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 March 26, 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 4/27

10:54 am-10:45 am

1 stop13h 51m

Helsinki-Vantaa

Tue 5/13

12:35 pm-6:36 pm

1 stop16h 01m

$608

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Thu 5/29

7:30 am-3:00 pm

1 stop21h 30m

Helsinki-Vantaa

Wed 6/18

4:50 pm-11:02 pm

1 stop16h 12m

$679

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Sun 8/31

1:42 pm-6:55 pm

2 stops43h 13m

Helsinki-Vantaa

Sun 9/14

12:40 pm-10:26 pm

2 stops43h 46m

$947

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Thu 5/29

4:35 pm-9:00 pm

2 stops18h 25m

Helsinki-Vantaa

Wed 6/18

2:05 pm-11:59 pm

2 stops19h 54m

$1,028

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Mon 6/2

12:45 pm-3:00 pm

1 stop16h 15m

Helsinki-Vantaa

Sat 6/7

12:35 pm-7:01 pm

1 stop16h 26m

$1,424

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Sun 4/20

10:54 am-10:45 am

1 stop13h 51m

$544

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Wed 4/2

7:05 am-6:55 pm

2 stops25h 50m

$569

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Wed 5/7

11:46 am-12:55 pm

1 stop15h 09m

$648

OntarioHelsinki

ONT - HEL

ONTHEL

Ontario

Sun 4/20

2:35 pm-5:40 pm

2 stops17h 05m

$864

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Helsinki flight deals on Cheapflights vs. FlightHub >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 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 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 $1,136). 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 March 26, 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 March 26, 2025.
KLM
7.8
Good
1,319 reviews

Overall

7.8

Boarding

7.8

Comfort

7.7

Crew

8.4

Food

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,319 reviews
KLM
7.8
Good
1,319 reviews

Overall

7.8

Boarding

7.8

Comfort

7.7

Crew

8.4

Food

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
United Airlines
7.4
Good
8,608 reviews
KLM
7.8
Good
1,319 reviews

Overall

7.8

Boarding

7.8

Comfort

7.7

Crew

8.4

Food

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,319 reviews

Overall

7.8

Boarding

7.8

Comfort

7.7

Crew

8.4

Food

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Iberia
7.0
Good
2,648 reviews
KLM
7.8
Good
1,319 reviews

Overall

7.8

Boarding

7.8

Comfort

7.7

Crew

8.4

Food

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
British Airways
6.6
Okay
6,712 reviews
KLM
7.8
Good
1,319 reviews

Overall

7.8

Boarding

7.8

Comfort

7.7

Crew

8.4

Food

7.3

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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 American Airlines, which is currently one of the cheapest options available, starting at $544. United Airlines flights start at $569 while deals on KLM start at $864 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 $1,136). 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

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
Santa Ana to Helsinki flights
Burbank to Helsinki flights
San Jose to Helsinki flights
Oakland to Helsinki flights
Las Vegas to Helsinki flights
San Diego to Helsinki flights
Sacramento to Helsinki flights
San Jose to Oulu flights
San Francisco to Rovaniemi flights
San Jose to Rovaniemi flights
Los Angeles to Ivalo flights
Los Angeles to Rovaniemi flights
San Francisco to Turku flights
San Francisco to Oulu flights
Oakland to Rovaniemi flights
San Francisco to Ivalo flights
Los Angeles to Kuusamo flights
Los Angeles to Kemi flights
Los Angeles to Kittilä flights
Los Angeles to Turku flights
Los Angeles to Tampere flights
Reno to Helsinki flights
San Francisco to Vaasa flights
San Francisco to Joensuu flights
San Francisco to Jyväskylä flights
San Francisco to Kajaani flights
San Francisco to Kemi 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.