$688 Cheap Flights from Helsinki (HEL) to Washington (IAD)

View $688 flight on Tue, Oct 14, 2025Opens in a new window

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

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Cheap Flights from Helsinki to Washington (HEL-IAD)

Prices were available within the past 7 days and start at $688 for one-way flights and $490 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Mon, Nov 10 - Mon, Dec 1
HEL
Helsinki
IAD
Washington
$490 Roundtrip, found 2 days ago
$490
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Mon, Nov 10 from Helsinki to Washington, returning Mon, Dec 1, priced at $490 found 2 days ago
Lufthansa
Fri, Oct 17 - Wed, Oct 29
HEL
Helsinki
IAD
Washington
$490 Roundtrip, found 2 days ago
$490
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Fri, Oct 17 from Helsinki to Washington, returning Wed, Oct 29, priced at $490 found 2 days ago
Lufthansa
Thu, Oct 16 - Fri, Oct 31
HEL
Helsinki
IAD
Washington
$491 Roundtrip, found 1 day ago
$491
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Thu, Oct 16 from Helsinki to Washington, returning Fri, Oct 31, priced at $491 found 1 day ago
Icelandair
Mon, Nov 10 - Mon, Dec 1
HEL
Helsinki
IAD
Washington
$493 Roundtrip, found 2 days ago
$493
Roundtrip
found 2 days ago
Select Icelandair flight, departing Mon, Nov 10 from Helsinki to Washington, returning Mon, Dec 1, priced at $493 found 2 days ago
Lufthansa
Mon, Nov 24 - Wed, Dec 31
HEL
Helsinki
IAD
Washington
$493 Roundtrip, found 2 days ago
$493
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Mon, Nov 24 from Helsinki to Washington, returning Wed, Dec 31, priced at $493 found 2 days ago
Lufthansa
Sun, Oct 26 - Tue, Nov 4
HEL
Helsinki
IAD
Washington
$494 Roundtrip, found 3 days ago
$494
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Sun, Oct 26 from Helsinki to Washington, returning Tue, Nov 4, priced at $494 found 3 days ago
Air Canada
Mon, Nov 10 - Mon, Dec 1
HEL
Helsinki
IAD
Washington
$498 Roundtrip, found 2 days ago
$498
Roundtrip
found 2 days ago
Select Air Canada flight, departing Mon, Nov 10 from Helsinki to Washington, returning Mon, Dec 1, priced at $498 found 2 days ago
United
Sun, Oct 19 - Sun, Nov 2
HEL
Helsinki
IAD
Washington
$514 Roundtrip, found 2 days ago
$514
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 19 from Helsinki to Washington, returning Sun, Nov 2, priced at $514 found 2 days ago
Scandinavian Airlines
Mon, Nov 3 - Mon, Nov 17
HEL
Helsinki
IAD
Washington
$520 Roundtrip, found 4 days ago
$520
Roundtrip
found 4 days ago
Select Scandinavian Airlines flight, departing Mon, Nov 3 from Helsinki to Washington, returning Mon, Nov 17, priced at $520 found 4 days ago
Delta
Wed, Oct 8 - Thu, Oct 30
HEL
Helsinki
IAD
Washington
$577 Roundtrip, found 2 days ago
$577
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Oct 8 from Helsinki to Washington, returning Thu, Oct 30, priced at $577 found 2 days ago
Flights from Helsinki (HEL) to Washington (IAD)
Origin airport
Vantaa
Destination airport
Washington Dulles Intl.
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
$489
Distance
4310 mi

Helsinki to Washington Flights

The cheapest times to fly from Helsinki to Washington

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

 

The best time to book a flight from Helsinki to Washington

Sunday is one of the best days to book for cheap flights from Helsinki to Washington: 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 Helsinki to Washington

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 Helsinki to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $688 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 Helsinki to Washington 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 Helsinki to Washington 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 Vantaa Airport (HEL) to Washington Dulles Intl. Airport (IAD) cost?
Lock in a cheap one-way flight from $688 or cheap return flight from $490 from Vantaa Airport (HEL) to Washington Dulles Intl. Airport (IAD) 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 Vantaa Airport (HEL) to Washington Dulles Intl. Airport (IAD)?
The cheapest month to fly from HEL to IAD is November, when demand is low. Off-peak months are usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Vantaa Airport (HEL) to Washington Dulles Intl. Airport (IAD)?
To find the cheapest airline flying from HEL to IAD, use Expedia's filter tool. Tailor your search based on your travel style, 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 Vantaa Airport (HEL) to Washington Dulles Intl. Airport (IAD)?
Nonstop flights from Vantaa Airport (HEL) to Washington Dulles Intl. Airport (IAD) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from HEL to IAD?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But 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 Vantaa Airport (HEL) to Washington Dulles Intl. Airport (IAD)?
To avoid potential delays on the Vantaa Airport (HEL) to Washington Dulles Intl. Airport (IAD) route, aim to fly before 3 PM. Later flights 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 Vantaa Airport (HEL) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your flight from HEL to IAD right before your journey is usually more expensive. But if there's some wiggle room with your schedule, you could land a cheap last-minute fare.
Is it cheaper to book a HEL to IAD flight and hotel package?
Opting for a HEL to IAD flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our extensive range of hotels and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Vantaa Airport (HEL) to Washington Dulles Intl. Airport (IAD)?
Typically, you can modify or cancel your HEL to IAD flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you need further information, visit our Customer Service portal.

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*Available to One Key members.