$483 Cheap Flights from Ontario (ONT) to Helsinki (HEL)

View $483 flight on Tue, Jan 13, 2026Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Helsinki-Vantaa Airport (HEL)

Cheap Flights from Ontario to Helsinki (ONT-HEL)

Prices were available within the past 7 days and start at $483 for one-way flights and $611 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Sun, Jan 18 - Tue, Feb 3
ONT
Ontario
HEL
Helsinki
$611 Roundtrip, found 23 hours ago
$611
Roundtrip
found 23 hours ago
Select British Airways flight, departing Sun, Jan 18 from Ontario to Helsinki, returning Tue, Feb 3, priced at $611 found 23 hours ago
American Airlines
Tue, Jan 13 - Tue, Jan 20
ONT
Ontario
HEL
Helsinki
$611 Roundtrip, found 9 hours ago
$611
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jan 13 from Ontario to Helsinki, returning Tue, Jan 20, priced at $611 found 9 hours ago
British Airways
Tue, Jan 13 - Tue, Jan 20
ONT
Ontario
HEL
Helsinki
$616 Roundtrip, found 9 hours ago
$616
Roundtrip
found 9 hours ago
Select British Airways flight, departing Tue, Jan 13 from Ontario to Helsinki, returning Tue, Jan 20, priced at $616 found 9 hours ago
American Airlines
Tue, Jan 13 - Tue, Jan 20
ONT
Ontario
HEL
Helsinki
$617 Roundtrip, found 9 hours ago
$617
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jan 13 from Ontario to Helsinki, returning Tue, Jan 20, priced at $617 found 9 hours ago
American Airlines
Tue, Jan 13 - Tue, Jan 20
ONT
Ontario
HEL
Helsinki
$623 Roundtrip, found 9 hours ago
$623
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Jan 13 from Ontario to Helsinki, returning Tue, Jan 20, priced at $623 found 9 hours ago
British Airways
Mon, Jan 12 - Tue, Jan 20
ONT
Ontario
HEL
Helsinki
$639 Roundtrip, found 9 hours ago
$639
Roundtrip
found 9 hours ago
Select British Airways flight, departing Mon, Jan 12 from Ontario to Helsinki, returning Tue, Jan 20, priced at $639 found 9 hours ago
British Airways
Tue, Oct 21 - Tue, Oct 28
ONT
Ontario
HEL
Helsinki
$645 Roundtrip, just found
$645
Roundtrip
just found
Select British Airways flight, departing Tue, Oct 21 from Ontario to Helsinki, returning Tue, Oct 28, priced at $645 just found
United
Tue, Dec 2 - Tue, Dec 9
ONT
Ontario
HEL
Helsinki
$646 Roundtrip, found 4 days ago
$646
Roundtrip
found 4 days ago
Select United flight, departing Tue, Dec 2 from Ontario to Helsinki, returning Tue, Dec 9, priced at $646 found 4 days ago
Delta
Tue, Jan 13 - Tue, Jan 20
ONT
Ontario
HEL
Helsinki
$661 Roundtrip, found 9 hours ago
$661
Roundtrip
found 9 hours ago
Select Delta flight, departing Tue, Jan 13 from Ontario to Helsinki, returning Tue, Jan 20, priced at $661 found 9 hours ago
Air France
Tue, Jan 13 - Tue, Jan 20
ONT
Ontario
HEL
Helsinki
$725 Roundtrip, found 9 hours ago
$725
Roundtrip
found 9 hours ago
Select Air France flight, departing Tue, Jan 13 from Ontario to Helsinki, returning Tue, Jan 20, priced at $725 found 9 hours ago

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to Vantaa Airport (HEL) cost?
Lock in a cheap one-way flight from $483 or cheap return flight from $611 from Los Angeles - Ontario Intl. Airport (ONT) to Vantaa Airport (HEL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Los Angeles - Ontario Intl. Airport (ONT) to Vantaa Airport (HEL)?
January is the most affordable month to fly from ONT to HEL. Traveling during an off-peak travel window is often the key to finding better fares.
Which airlines fly direct from Los Angeles - Ontario Intl. Airport (ONT) to Vantaa Airport (HEL)?
You can't catch a nonstop flight to Vantaa Airport (HEL) from Ontario, CA (ONT-Los Angeles - Ontario Intl.). However, you can easily journey to Helsinki without any layovers by departing from Los Angeles Intl. Airport (LAX).
What is the cheapest airline that flies from Los Angeles - Ontario Intl. Airport (ONT) to Vantaa Airport (HEL)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest ONT to HEL flight.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to Vantaa Airport (HEL)?
There are no daily direct flights departing from Los Angeles - Ontario Intl. Airport (ONT) to Vantaa Airport (HEL). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from ONT to HEL?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to Vantaa Airport (HEL)?
Select a flight from Los Angeles - Ontario Intl. Airport (ONT) to Vantaa Airport (HEL) that leaves before 3 PM to reduce the risk of cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to Vantaa Airport (HEL) last-minute?
Booking your plane ticket from ONT to HEL right before your getaway is usually more expensive. However, if there's some wiggle room with your departure times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book an ONT to HEL flight and hotel package?
You'll generally save money by booking an ONT to HEL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've selected your ideal accommodations and flights, consider other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Vantaa Airport (HEL)?
Typically, you can cancel or reschedule your ONT to HEL flight. However, there may be additional charges, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you need more details, head to our Customer Service portal.

Travel information

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
Vantaa
Airlines serving
American Airlines, British Airways, Delta, Iberia, KLM, United
Roundtrip price
$610
Distance
5578 mi

Book with confidence

Book with confidence

Ontario to Helsinki Flights

The cheapest times to fly from Ontario to Helsinki

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario to Helsinki are during the month of January. You can find some of the cheapest flights from Ontario to Helsinki with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to Helsinki

Sunday is one of the best days to book for cheap flights from Ontario to Helsinki: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario to Helsinki

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario to Helsinki in 2025. You can also book with separate airlines for your outbound and return journeys, from $483 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario to Helsinki flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario to Helsinki airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Ontario to Helsinki Flights

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*Available to One Key members.