$351 Cheap Flights from Cardiff (CWL) to Helsinki (HEL)

View $351 flight on Mon, Jul 14, 2025Opens in a new window

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Cheap Flights from Cardiff to Helsinki (CWL-HEL)

Prices were available within the past 7 days and start at $351 for one-way flights and $583 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Mon, Jul 14 - Mon, Jul 21
CWL
Cardiff
HEL
Helsinki
$583 Roundtrip, found 4 hours ago
$583
Roundtrip
found 4 hours ago
Select KLM flight, departing Mon, Jul 14 from Cardiff to Helsinki, returning Mon, Jul 21, priced at $583 found 4 hours ago
KLM
Mon, Jul 14 - Mon, Jul 21
CWL
Cardiff
HEL
Helsinki
$585 Roundtrip, found 4 hours ago
$585
Roundtrip
found 4 hours ago
Select KLM flight, departing Mon, Jul 14 from Cardiff to Helsinki, returning Mon, Jul 21, priced at $585 found 4 hours ago
KLM
Mon, Jul 14 - Mon, Jul 21
CWL
Cardiff
HEL
Helsinki
$585 Roundtrip, found 4 hours ago
$585
Roundtrip
found 4 hours ago
Select KLM flight, departing Mon, Jul 14 from Cardiff to Helsinki, returning Mon, Jul 21, priced at $585 found 4 hours ago
KLM
Mon, Jul 14 - Mon, Jul 21
CWL
Cardiff
HEL
Helsinki
$611 Roundtrip, found 4 hours ago
$611
Roundtrip
found 4 hours ago
Select KLM flight, departing Mon, Jul 14 from Cardiff to Helsinki, returning Mon, Jul 21, priced at $611 found 4 hours ago
KLM
Mon, Jul 14 - Mon, Jul 21
CWL
Cardiff
HEL
Helsinki
$613 Roundtrip, found 4 hours ago
$613
Roundtrip
found 4 hours ago
Select KLM flight, departing Mon, Jul 14 from Cardiff to Helsinki, returning Mon, Jul 21, priced at $613 found 4 hours ago
KLM
Mon, Jul 14 - Mon, Jul 21
CWL
Cardiff
HEL
Helsinki
$613 Roundtrip, found 4 hours ago
$613
Roundtrip
found 4 hours ago
Select KLM flight, departing Mon, Jul 14 from Cardiff to Helsinki, returning Mon, Jul 21, priced at $613 found 4 hours ago
KLM
Mon, Jul 14 - Mon, Jul 21
CWL
Cardiff
HEL
Helsinki
$618 Roundtrip, found 4 hours ago
$618
Roundtrip
found 4 hours ago
Select KLM flight, departing Mon, Jul 14 from Cardiff to Helsinki, returning Mon, Jul 21, priced at $618 found 4 hours ago
KLM
Mon, Jul 14 - Mon, Jul 21
CWL
Cardiff
HEL
Helsinki
$619 Roundtrip, found 4 hours ago
$619
Roundtrip
found 4 hours ago
Select KLM flight, departing Mon, Jul 14 from Cardiff to Helsinki, returning Mon, Jul 21, priced at $619 found 4 hours ago
KLM
Mon, Jul 14 - Mon, Jul 21
CWL
Cardiff
HEL
Helsinki
$620 Roundtrip, found 4 hours ago
$620
Roundtrip
found 4 hours ago
Select KLM flight, departing Mon, Jul 14 from Cardiff to Helsinki, returning Mon, Jul 21, priced at $620 found 4 hours ago
KLM
Mon, Jul 14 - Mon, Jul 21
CWL
Cardiff
HEL
Helsinki
$623 Roundtrip, found 4 hours ago
$623
Roundtrip
found 4 hours ago
Select KLM flight, departing Mon, Jul 14 from Cardiff to Helsinki, returning Mon, Jul 21, priced at $623 found 4 hours ago
Flights from Cardiff (CWL) to Helsinki (HEL)
Origin airport
Cardiff Intl.
Destination airport
Vantaa
Airlines serving
Air France, KLM
Roundtrip price
$583
Distance
1244 mi

Cardiff to Helsinki Flights

The cheapest times to fly from Cardiff 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 Cardiff to Helsinki are during the month of July. You can find some of the cheapest flights from Cardiff to Helsinki with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Cardiff to Helsinki

Sunday is one of the best days to book for cheap flights from Cardiff 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 Cardiff 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 Cardiff to Helsinki in 2025. You can also book with separate airlines for your outbound and return journeys, from $351 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 Cardiff 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 Cardiff 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.

 

Frequently asked questions

How much does a flight from Cardiff Intl. Airport (CWL) to Vantaa Airport (HEL) cost?
Discover the latest flight deals from CWL to HEL by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from CWL to HEL?
The cheapest flights from CWL to HEL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from CWL to HEL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from CWL to HEL. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Cardiff Intl. Airport (CWL) to Vantaa Airport (HEL)?
Nonstop flights from Cardiff Intl. Airport (CWL) to Vantaa Airport (HEL) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with Expedia’s filters. Enter your dates and click on either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from CWL to HEL?
Usually you’ll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can change depending on the season, airline 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 Cardiff Intl. Airport (CWL) to Vantaa Airport (HEL)?
To avoid potential delays on the Cardiff Intl. Airport (CWL) to Vantaa Airport (HEL) route, fly before 3 PM. Flights after this time have a 22% higher chance of being canceled.**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 Cardiff Intl. Airport (CWL) to Vantaa Airport (HEL) last-minute?
Last-minute fares from CWL to HEL are generally more expensive. To lock in the lowest rates, start looking for flights as soon as possible. That said, if you can play around with your travel dates, you may score a cheap fare just before your departure.
Is it cheaper to book a CWL to HEL flight and hotel package?
Compared with arranging hotels and flights separately, booking a CWL to HEL flight and hotel package with Expedia could lead to significant savings. Better still, managing everything in one place will take the hassle out of travel planning. Simply pick your flights and choose from our extensive range of hotels, then customize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Cardiff Intl. Airport (CWL) to Vantaa Airport (HEL)?
If you reserved your CWL to HEL flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

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*Available to One Key members.