$218 Cheap Flights from Southampton (SOU) to Helsinki (HEL)

View $218 flight on Thu, Jun 11, 2026Opens in a new window

Popular airlines from Southampton (SOU) to Helsinki-Vantaa Airport (HEL)

Cheap Flights from Southampton to Helsinki (SOU-HEL)

Prices were available within the past 7 days and start at $218 for one-way flights and $326 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Tue, Oct 7 - Tue, Oct 14
SOU
Southampton
HEL
Helsinki
$326 Roundtrip, found 3 days ago
$326
Roundtrip
found 3 days ago
Select KLM flight, departing Tue, Oct 7 from Southampton to Helsinki, returning Tue, Oct 14, priced at $326 found 3 days ago
KLM
Fri, Oct 10 - Tue, Oct 14
SOU
Southampton
HEL
Helsinki
$359 Roundtrip, found 3 days ago
$359
Roundtrip
found 3 days ago
Select KLM flight, departing Fri, Oct 10 from Southampton to Helsinki, returning Tue, Oct 14, priced at $359 found 3 days ago
KLM
Mon, Oct 13 - Thu, Oct 16
SOU
Southampton
HEL
Helsinki
$380 Roundtrip, found 3 days ago
$380
Roundtrip
found 3 days ago
Select KLM flight, departing Mon, Oct 13 from Southampton to Helsinki, returning Thu, Oct 16, priced at $380 found 3 days ago
KLM
Fri, Oct 10 - Mon, Oct 13
SOU
Southampton
HEL
Helsinki
$415 Roundtrip, found 3 days ago
$415
Roundtrip
found 3 days ago
Select KLM flight, departing Fri, Oct 10 from Southampton to Helsinki, returning Mon, Oct 13, priced at $415 found 3 days ago
KLM
Tue, Oct 7 - Sun, Oct 12
SOU
Southampton
HEL
Helsinki
$444 Roundtrip, found 3 days ago
$444
Roundtrip
found 3 days ago
Select KLM flight, departing Tue, Oct 7 from Southampton to Helsinki, returning Sun, Oct 12, priced at $444 found 3 days ago
KLM
Fri, Oct 10 - Sun, Oct 12
SOU
Southampton
HEL
Helsinki
$480 Roundtrip, found 3 days ago
$480
Roundtrip
found 3 days ago
Select KLM flight, departing Fri, Oct 10 from Southampton to Helsinki, returning Sun, Oct 12, priced at $480 found 3 days ago
KLM
Mon, Oct 13 - Tue, Oct 14
SOU
Southampton
HEL
Helsinki
$486 Roundtrip, found 3 days ago
$486
Roundtrip
found 3 days ago
Select KLM flight, departing Mon, Oct 13 from Southampton to Helsinki, returning Tue, Oct 14, priced at $486 found 3 days ago
KLM
Fri, Oct 10 - Sun, Oct 12
SOU
Southampton
HEL
Helsinki
$500 Roundtrip, found 3 days ago
$500
Roundtrip
found 3 days ago
Select KLM flight, departing Fri, Oct 10 from Southampton to Helsinki, returning Sun, Oct 12, priced at $500 found 3 days ago
KLM
Tue, Oct 7 - Sat, Oct 11
SOU
Southampton
HEL
Helsinki
$539 Roundtrip, found 3 days ago
$539
Roundtrip
found 3 days ago
Select KLM flight, departing Tue, Oct 7 from Southampton to Helsinki, returning Sat, Oct 11, priced at $539 found 3 days ago
KLM
Tue, Oct 7 - Thu, Oct 9
SOU
Southampton
HEL
Helsinki
$570 Roundtrip, found 3 days ago
$570
Roundtrip
found 3 days ago
Select KLM flight, departing Tue, Oct 7 from Southampton to Helsinki, returning Thu, Oct 9, priced at $570 found 3 days ago
Flights from Southampton (SOU) to Helsinki (HEL)
Origin airport
Southampton
Destination airport
Vantaa
Roundtrip price
$326
Distance
1201 mi

Southampton to Helsinki Flights

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

 

The best time to book a flight from Southampton to Helsinki

Sunday is one of the best days to book for cheap flights from Southampton 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 Southampton 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 Southampton to Helsinki in 2025. You can also book with separate airlines for your outbound and return journeys, from $218 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 Southampton 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 Southampton 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 Southampton Airport (SOU) to Vantaa Airport (HEL) cost?
Grab a cheap one-way flight from $218 or cheap return flight from $326 from Southampton Airport (SOU) to Vantaa Airport (HEL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Southampton Airport (SOU) to Vantaa Airport (HEL)?
Flying in October is a great way to save, as it's the cheapest month for flights between SOU and HEL. You'll usually find the lowest prices during the off-season.
Which airlines fly direct from Southampton Airport (SOU) to Vantaa Airport (HEL)?
You can't fly directly from Southampton (SOU) to Vantaa Airport (HEL). However, you can find other airports that offer nonstop flights. Hop on your plane at Heathrow Airport (LHR) and head straight to Helsinki without layovers.
What is the cheapest airline that flies from Southampton Airport (SOU) to Vantaa Airport (HEL)?
To find the cheapest airline flying from SOU to HEL, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Southampton Airport (SOU) to Vantaa Airport (HEL)?
You'll need to catch a flight with a layover when traveling from Southampton Airport (SOU) to Vantaa Airport (HEL). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from SOU to HEL?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on a range of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Southampton Airport (SOU) to Vantaa Airport (HEL)?
Opt for a flight from Southampton Airport (SOU) to Vantaa Airport (HEL) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this hour are on average 22% more likely to be 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 Southampton Airport (SOU) to Vantaa Airport (HEL) last-minute?
Last-minute fares from SOU to HEL are generally more expensive. To lock in the lowest prices, start looking for flights early. That being said, if you can play around with your travel dates, it's possible to land a cheap ticket right before you leave.
Is it cheaper to book a SOU to HEL flight and hotel package?
Securing a SOU to HEL flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Pick from our extensive range of hotels and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Southampton Airport (SOU) to Vantaa Airport (HEL)?
If you booked your SOU 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 that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

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*Available to One Key members.