$405 Cheap Flights from Dayton (DAY) to Helsinki (HEL)

View $405 flight on Wed, Nov 5, 2025Opens in a new window

Popular airlines from Dayton Intl. Airport (DAY) to Helsinki-Vantaa Airport (HEL)

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Cheap Flights from Dayton to Helsinki (DAY-HEL)

Prices were available within the past 7 days and start at $405 for one-way flights and $494 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Wed, Nov 5 - Tue, Nov 11
DAY
Dayton
HEL
Helsinki
$494 Roundtrip, found 9 hours ago
$494
Roundtrip
found 9 hours ago
Select Lufthansa flight, departing Wed, Nov 5 from Dayton to Helsinki, returning Tue, Nov 11, priced at $494 found 9 hours ago
Lufthansa
Wed, Nov 5 - Tue, Nov 11
DAY
Dayton
HEL
Helsinki
$495 Roundtrip, found 9 hours ago
$495
Roundtrip
found 9 hours ago
Select Lufthansa flight, departing Wed, Nov 5 from Dayton to Helsinki, returning Tue, Nov 11, priced at $495 found 9 hours ago
Lufthansa
Wed, Feb 11 - Tue, Feb 17
DAY
Dayton
HEL
Helsinki
$498 Roundtrip, found 18 hours ago
$498
Roundtrip
found 18 hours ago
Select Lufthansa flight, departing Wed, Feb 11 from Dayton to Helsinki, returning Tue, Feb 17, priced at $498 found 18 hours ago
Lufthansa
Wed, Nov 5 - Tue, Nov 11
DAY
Dayton
HEL
Helsinki
$505 Roundtrip, found 9 hours ago
$505
Roundtrip
found 9 hours ago
Select Lufthansa flight, departing Wed, Nov 5 from Dayton to Helsinki, returning Tue, Nov 11, priced at $505 found 9 hours ago
Lufthansa
Wed, Nov 5 - Tue, Nov 11
DAY
Dayton
HEL
Helsinki
$507 Roundtrip, found 9 hours ago
$507
Roundtrip
found 9 hours ago
Select Lufthansa flight, departing Wed, Nov 5 from Dayton to Helsinki, returning Tue, Nov 11, priced at $507 found 9 hours ago
Lufthansa
Wed, Feb 11 - Tue, Feb 17
DAY
Dayton
HEL
Helsinki
$508 Roundtrip, found 18 hours ago
$508
Roundtrip
found 18 hours ago
Select Lufthansa flight, departing Wed, Feb 11 from Dayton to Helsinki, returning Tue, Feb 17, priced at $508 found 18 hours ago
American Airlines
Sat, Dec 6 - Sat, Dec 13
DAY
Dayton
HEL
Helsinki
$538 Roundtrip, found 4 days ago
$538
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Dec 6 from Dayton to Helsinki, returning Sat, Dec 13, priced at $538 found 4 days ago
United
Wed, Nov 12 - Mon, Nov 24
DAY
Dayton
HEL
Helsinki
$542 Roundtrip, found 2 days ago
$542
Roundtrip
found 2 days ago
Select United flight, departing Wed, Nov 12 from Dayton to Helsinki, returning Mon, Nov 24, priced at $542 found 2 days ago
Delta
Wed, Nov 26 - Mon, Dec 8
DAY
Dayton
HEL
Helsinki
$544 Roundtrip, found 2 days ago
$544
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Nov 26 from Dayton to Helsinki, returning Mon, Dec 8, priced at $544 found 2 days ago
British Airways
Sat, Jan 24 - Sat, Jan 31
DAY
Dayton
HEL
Helsinki
$577 Roundtrip, found 1 day ago
$577
Roundtrip
found 1 day ago
Select British Airways flight, departing Sat, Jan 24 from Dayton to Helsinki, returning Sat, Jan 31, priced at $577 found 1 day ago

Frequently asked questions

How much does a flight from James M. Cox Dayton Intl. Airport (DAY) to Vantaa Airport (HEL) cost?
Grab a cheap one-way flight from $405 or cheap return flight from $494 from James M. Cox Dayton Intl. Airport (DAY) 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 James M. Cox Dayton Intl. Airport (DAY) to Vantaa Airport (HEL)?
November is the cheapest month to fly from DAY to HEL. Timing your trip outside of the busy season is often the key to finding better fares.
What is the cheapest airline that flies from James M. Cox Dayton Intl. Airport (DAY) to Vantaa Airport (HEL)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest DAY to HEL flight.
How many flights per day from James M. Cox Dayton Intl. Airport (DAY) to Vantaa Airport (HEL)?
There aren't any daily nonstop flights available from James M. Cox Dayton Intl. Airport (DAY) to Vantaa Airport (HEL). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from DAY to HEL?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on various factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from James M. Cox Dayton Intl. Airport (DAY) to Vantaa Airport (HEL)?
Choose a flight from James M. Cox Dayton Intl. Airport (DAY) to Vantaa Airport (HEL) that leaves before 3 PM to reduce the likelihood 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 James M. Cox Dayton Intl. Airport (DAY) to Vantaa Airport (HEL) last-minute?
Waiting until right before your break to book a flight from DAY to HEL generally means paying more. While it's possible to find some last-minute discounts, there's no guarantee. Keep your travel plans flexible to maximize your chances of snagging a bargain.
Is it cheaper to book a DAY to HEL flight and hotel package?
Securing a DAY to HEL flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Choose from our wide range of hotels and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from James M. Cox Dayton Intl. Airport (DAY) to Vantaa Airport (HEL)?
If you reserved your DAY to HEL flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of fare you have, 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.

Travel information

Origin airport
James M. Cox Dayton Intl.
Destination airport
Vantaa
Airlines serving
British Airways, Lufthansa, Scandinavian Airlines
Roundtrip price
$493
Distance
4447 mi

Book with confidence

Dayton to Helsinki Flights

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

 

The best time to book a flight from Dayton to Helsinki

Sunday is one of the best days to book for cheap flights from Dayton 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 Dayton 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 Dayton to Helsinki in 2025. You can also book with separate airlines for your outbound and return journeys, from $405 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 Dayton 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 Dayton 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.

 

Dayton to Helsinki Flights

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*Available to One Key members.