$364 Cheap Flights from Washington (IAD) to Helsinki (HEL)

View $364 flight on Wed, Oct 22, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Helsinki-Vantaa Airport (HEL)

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Cheap Flights from Washington to Helsinki (IAD-HEL)

Prices were available within the past 7 days and start at $364 for one-way flights and $403 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Wed, Nov 19 - Mon, Nov 24
IAD
Washington
HEL
Helsinki
$403 Roundtrip, found 1 hour ago
$403
Roundtrip
found 1 hour ago
Select Icelandair flight, departing Wed, Nov 19 from Washington to Helsinki, returning Mon, Nov 24, priced at $403 found 1 hour ago
Icelandair
Sat, Oct 11 - Sat, Nov 1
IAD
Washington
HEL
Helsinki
$404 Roundtrip, found 2 days ago
$404
Roundtrip
found 2 days ago
Select Icelandair flight, departing Sat, Oct 11 from Washington to Helsinki, returning Sat, Nov 1, priced at $404 found 2 days ago
Scandinavian Airlines
Wed, Jan 14 - Wed, Jan 21
IAD
Washington
HEL
Helsinki
$425 Roundtrip, found 2 days ago
$425
Roundtrip
found 2 days ago
Select Scandinavian Airlines flight, departing Wed, Jan 14 from Washington to Helsinki, returning Wed, Jan 21, priced at $425 found 2 days ago
Scandinavian Airlines
Wed, Jan 14 - Tue, Jan 20
IAD
Washington
HEL
Helsinki
$425 Roundtrip, found 1 day ago
$425
Roundtrip
found 1 day ago
Select Scandinavian Airlines flight, departing Wed, Jan 14 from Washington to Helsinki, returning Tue, Jan 20, priced at $425 found 1 day ago
Icelandair
Sat, Feb 28 - Sat, Mar 7
IAD
Washington
HEL
Helsinki
$427 Roundtrip, found 3 days ago
$427
Roundtrip
found 3 days ago
Select Icelandair flight, departing Sat, Feb 28 from Washington to Helsinki, returning Sat, Mar 7, priced at $427 found 3 days ago
Icelandair
Fri, Jan 9 - Wed, Jan 14
IAD
Washington
HEL
Helsinki
$427 Roundtrip, found 3 hours ago
$427
Roundtrip
found 3 hours ago
Select Icelandair flight, departing Fri, Jan 9 from Washington to Helsinki, returning Wed, Jan 14, priced at $427 found 3 hours ago
American Airlines
Fri, Feb 6 - Mon, Feb 9
IAD
Washington
HEL
Helsinki
$482 Roundtrip, found 7 hours ago
$482
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Fri, Feb 6 from Washington to Helsinki, returning Mon, Feb 9, priced at $482 found 7 hours ago
Delta
Thu, Jan 8 - Sun, Jan 11
IAD
Washington
HEL
Helsinki
$488 Roundtrip, found 2 hours ago
$488
Roundtrip
found 2 hours ago
Select Delta flight, departing Thu, Jan 8 from Washington to Helsinki, returning Sun, Jan 11, priced at $488 found 2 hours ago
British Airways
Fri, Mar 20 - Mon, Mar 23
IAD
Washington
HEL
Helsinki
$500 Roundtrip, found 2 days ago
$500
Roundtrip
found 2 days ago
Select British Airways flight, departing Fri, Mar 20 from Washington to Helsinki, returning Mon, Mar 23, priced at $500 found 2 days ago
Lufthansa
Mon, Oct 27 - Thu, Nov 6
IAD
Washington
HEL
Helsinki
$502 Roundtrip, found 4 days ago
$502
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Mon, Oct 27 from Washington to Helsinki, returning Thu, Nov 6, priced at $502 found 4 days ago

Find the cheapest month to fly from Washington (IAD) to Helsinki (HEL)

February is typically the cheapest month to fly

From $387 - $711 per traveler.

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Vantaa Airport (HEL) cost?
Grab a cheap one-way flight from $364 or cheap return flight from $403 from Washington Dulles Intl. Airport (IAD) 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 Washington Dulles Intl. Airport (IAD) to Vantaa Airport (HEL)?
Planning your getaway for November can help you save, as it's the cheapest month for flights between IAD and HEL. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Vantaa Airport (HEL)?
To find the cheapest airline that'll fly you from IAD to HEL, use Expedia's filter tool. Tailor 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 discover the cheapest flight right away.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Vantaa Airport (HEL)?
There aren't any daily nonstop flights departing from Washington Dulles Intl. Airport (IAD) to Vantaa Airport (HEL). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way before you know it.
What day of the week has the most flights from IAD to HEL?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Vantaa Airport (HEL)?
To arrive at Vantaa Airport (HEL) on schedule, book a flight that leaves from Washington Dulles Intl. Airport (IAD) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Washington Dulles Intl. Airport (IAD) to Vantaa Airport (HEL) last-minute?
Booking your ticket from IAD to HEL right before your trip is typically more expensive. But if there's some wiggle room with your schedule, you could bag a cheap last-minute fare.
Is it cheaper to book an IAD to HEL flight and hotel package?
You can save money by booking an IAD to HEL flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After choosing your preferred accommodations and flights, consider adding extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Vantaa Airport (HEL)?
If you booked your IAD to HEL flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you'd like more information.

Travel information

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Vantaa
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$403
Distance
4310 mi

Book with confidence

Book with confidence

Washington to Helsinki Flights

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

 

The best time to book a flight from Washington to Helsinki

Sunday is one of the best days to book for cheap flights from Washington 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 Washington 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 Washington to Helsinki in 2025. You can also book with separate airlines for your outbound and return journeys, from $364 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 Washington 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 Washington 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.

 

Washington to Helsinki Flights

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*Available to One Key members.