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Cheap flights from Washington, D.C. to Helsinki from $342

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Helsinki departing on 1/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Washington, D.C. to Helsinki

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
7:40 pm - 12:55 pm
IAD
-
HEL
10h 15m1 stop
Icelandair Logo
1:55 pm - 6:30 pm
HEL
-
IAD
11h 35m1 stop
$359Icelandair
Thu, Jan 8 - Fri, Jan 16
Icelandair Logo
7:40 pm - 12:55 pm
IAD
-
HEL
10h 15m1 stop
Icelandair Logo
1:55 pm - 6:30 pm
HEL
-
IAD
11h 35m1 stop
$363Icelandair
Tue, Jan 6 - Tue, Jan 13
Icelandair Logo
7:40 pm - 12:55 pm
IAD
-
HEL
10h 15m1 stop
Icelandair Logo
1:55 pm - 6:30 pm
HEL
-
IAD
11h 35m1 stop
$364Icelandair
Fri, Jan 9 - Thu, Jan 22
Scandinavian Airlines Logo
12:23 pm - 8:20 pm
IAD
-
HEL
24h 57m2 stops
Scandinavian Airlines Logo
8:55 pm - 5:15 pm
HEL
-
IAD
27h 20m2 stops
$394Scandinavian Airlines
Tue, Feb 10 - Tue, Feb 17
Scandinavian Airlines Logo
11:10 am - 10:40 am
DCA
-
HEL
16h 30m2 stops
Scandinavian Airlines Logo
11:20 am - 10:48 pm
HEL
-
DCA
18h 28m2 stops
$473Scandinavian Airlines
Sun, Jan 11 - Mon, Jan 19
Finnair Logo
5:45 pm - 1:55 pm
DCA
-
HEL
13h 10m1 stop
Finnair Logo
4:50 pm - 10:03 pm
HEL
-
DCA
12h 13m1 stop
$520Finnair
Tue, Jan 27 - Fri, Feb 6
Finnair Logo
5:45 pm - 1:55 pm
DCA
-
HEL
13h 10m1 stop
Finnair Logo
5:00 pm - 10:03 pm
HEL
-
DCA
12h 03m1 stop
$523Finnair
Wed, Jan 21 - Wed, Jan 28
British Airways Logo
1:35 pm - 3:15 pm
DCA
-
HEL
18h 40m2 stops
British Airways Logo
5:00 pm - 10:03 pm
HEL
-
DCA
12h 03m1 stop
$526British Airways
Wed, Jan 21 - Wed, Jan 28
American Airlines Logo
5:59 pm - 2:15 pm
DCA
-
HEL
13h 16m1 stop
American Airlines Logo
4:50 pm - 10:57 pm
HEL
-
DCA
12h 07m1 stop
$533American Airlines
Mon, May 11 - Mon, Oct 26
American Airlines Logo
12:25 pm - 1:55 pm
DCA
-
HEL
19h 30m1 stop
American Airlines Logo
4:50 pm - 10:00 am
HEL
-
DCA
23h 10m1 stop
$538American Airlines
Sun, Mar 8 - Sun, Mar 15

American Airlines flights from Washington, D.C. to Helsinki

Our best American Airlines deals on Washington, D.C. to Helsinki flight tickets
American Airlines
May 11
DCA5:59 pmWashington, D.C. Reagan-National
13h 16m
1 stop
HEL2:15 pmHelsinki-Vantaa
Oct 26
HEL4:50 pmHelsinki-Vantaa
12h 07m
1 stop
DCA10:57 pmWashington, D.C. Reagan-National
$533
Find similar
American Airlines
Mar 8
DCA12:25 pmWashington, D.C. Reagan-National
19h 30m
1 stop
HEL1:55 pmHelsinki-Vantaa
Mar 15
HEL4:50 pmHelsinki-Vantaa
23h 10m
1 stop
DCA10:00 amWashington, D.C. Reagan-National
$538
Find similar
American Airlines
Feb 11
DCA11:50 amWashington, D.C. Reagan-National
15h 55m
1 stop
HEL10:45 amHelsinki-Vantaa
Feb 18
HEL5:00 pmHelsinki-Vantaa
12h 05m
1 stop
DCA10:05 pmWashington, D.C. Reagan-National
$539
Find similar

Scandinavian Airlines flights from Washington, D.C. to Helsinki

Our best Scandinavian Airlines deals on Washington, D.C. to Helsinki flight tickets
Scandinavian Airlines
Feb 10
IAD12:23 pmWashington, D.C. Dulles Intl
24h 57m
2 stops
HEL8:20 pmHelsinki-Vantaa
Feb 17
HEL8:55 pmHelsinki-Vantaa
27h 20m
2 stops
IAD5:15 pmWashington, D.C. Dulles Intl
$394
Find similar
Scandinavian Airlines
Mar 17
IAD1:19 pmWashington, D.C. Dulles Intl
15h 21m
2 stops
HEL10:40 amHelsinki-Vantaa
Mar 29
HEL9:05 pmHelsinki-Vantaa
26h 45m
1 stop
IAD4:50 pmWashington, D.C. Dulles Intl
$397
Find similar
Scandinavian Airlines
Jan 27
IAD12:23 pmWashington, D.C. Dulles Intl
15h 17m
2 stops
HEL10:40 amHelsinki-Vantaa
Feb 6
HEL9:00 pmHelsinki-Vantaa
28h 50m
1 stop
IAD6:50 pmWashington, D.C. Dulles Intl
$400
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 9, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Helsinki that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Helsinki

IAD - HEL

IADHEL

Washington, D.C. Dulles Intl

Thu 1/8

7:40 pm-12:55 pm

1 stop10h 15m

Helsinki-Vantaa

Fri 1/16

1:55 pm-6:30 pm

1 stop11h 35m

$359

Washington, D.C.Helsinki

IAD - HEL

IADHEL

Washington, D.C. Dulles Intl

Tue 1/6

7:40 pm-12:55 pm

1 stop10h 15m

Helsinki-Vantaa

Tue 1/13

1:55 pm-6:30 pm

1 stop11h 35m

$363

Washington, D.C.Helsinki

IAD - HEL

IADHEL

Washington, D.C. Dulles Intl

Fri 1/9

7:40 pm-12:55 pm

1 stop10h 15m

Helsinki-Vantaa

Thu 1/22

1:55 pm-6:30 pm

1 stop11h 35m

$364

Washington, D.C.Helsinki

IAD - HEL

IADHEL

Washington, D.C. Dulles Intl

Tue 2/10

12:23 pm-8:20 pm

2 stops24h 57m

Helsinki-Vantaa

Tue 2/17

8:55 pm-5:15 pm

2 stops27h 20m

$394

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Sun 1/11

11:10 am-10:40 am

2 stops16h 30m

Helsinki-Vantaa

Mon 1/19

11:20 am-10:48 pm

2 stops18h 28m

$473

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Tue 1/27

5:45 pm-1:55 pm

1 stop13h 10m

Helsinki-Vantaa

Fri 2/6

4:50 pm-10:03 pm

1 stop12h 13m

$520

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Wed 1/21

5:45 pm-1:55 pm

1 stop13h 10m

Helsinki-Vantaa

Wed 1/28

5:00 pm-10:03 pm

1 stop12h 03m

$523

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Wed 1/21

1:35 pm-3:15 pm

2 stops18h 40m

Helsinki-Vantaa

Wed 1/28

5:00 pm-10:03 pm

1 stop12h 03m

$526

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Mon 5/11

5:59 pm-2:15 pm

1 stop13h 16m

Helsinki-Vantaa

Mon 10/26

4:50 pm-10:57 pm

1 stop12h 07m

$533

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Sun 3/8

12:25 pm-1:55 pm

1 stop19h 30m

Helsinki-Vantaa

Sun 3/15

4:50 pm-10:00 am

1 stop23h 10m

$538

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Helsinki from

How to get the cheapest flight ticket from Washington, D.C. to Helsinki

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Helsinki?

The month of February is, on average, the cheapest month to fly to Helsinki from Washington, D.C., with most prices found around $383. If you aren’t able to travel during the month of February, then book flights to Helsinki from Washington, D.C. during November instead. Flights to Helsinki in November, while not as cheap as those in February, still average around $454.

What is the cheapest day to depart on your flight to Helsinki?

The cheapest day to depart on your flight to Helsinki is on a Tuesday when prices can be found for as low as $364. This is often the case because there is less demand to fly during this day of the week. Flights from Washington, D.C. to Helsinki on a Wednesday will generally be more expensive and average around $692. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Helsinki?

According to our data, the cheapest time of day to fly to Helsinki is in the evening. momondo users have found flights departing from Washington, D.C. to Helsinki in the evening for as low as $399. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Helsinki, so prices are often more expensive at around $541 per ticket.

How far in advance should I book a flight to Helsinki?

You are more likely to see cheaper flights to Helsinki from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Helsinki for around $589 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Helsinki from Washington, D.C. for as low as $479 on momondo.

Can stopping save me money on Washington, D.C. to Helsinki flights?

You could potentially save up to 19% on your flight if you consider stops on a Washington, D.C. to Helsinki flight.

How have Washington, D.C. to Helsinki flight prices changed over time?

As of December 2025, prices for Washington, D.C. to Helsinki flights are approximately 33% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. to Helsinki

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Helsinki according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Helsinki (WAS to HEL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Helsinki

Fastest flight time

10h 15m

Direct flights

None
The fastest flight from Washington, D.C. to Helsinki takes 10h 15m
There are no direct flights from Washington, D.C. to Helsinki. There are no popular flight routes from Washington, D.C. to Helsinki.
Search flight deals

  • How far is Washington, D.C. to Helsinki-Vantaa by plane?

    The straight-line distance from Washington, D.C. to Helsinki-Vantaa is 4303.0 mi. 10h 15m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Washington, D.C. to Helsinki-Vantaa Airport?

    Prices for flights from Washington, D.C. to Helsinki-Vantaa Airport refresh daily.

  • How many operators does momondo search for flights from Washington, D.C. to Helsinki-Vantaa Airport?

  • How old do you have to be to fly from Washington, D.C. to Helsinki-Vantaa Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Helsinki-Vantaa Airport.

  • What documentation or ID do you need to fly to Helsinki-Vantaa Airport?

    The required travel and health documents for your Helsinki-Vantaa Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helsinki-Vantaa Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Washington, D.C. to Helsinki?

Best airlines flying from Washington, D.C. to Helsinki

Compare and see reviews for airlines that fly from Washington, D.C. to Helsinki with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $355Free CancellationRating
7.0
588 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $423Free CancellationRating
7.4
1,602 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $462Free CancellationRating
7.4
9,089 reviews
Search United Airlines flights
LufthansaPriceFrom $486Free CancellationRating
6.8
7,618 reviews
Search Lufthansa flights
DeltaPriceFrom $527Free CancellationRating
7.9
8,011 reviews
Search Delta flights
British AirwaysPriceFrom $535Free CancellationRating
6.7
7,571 reviews
Search British Airways flights
KLMPriceFrom $554Free CancellationRating
7.7
1,431 reviews
Search KLM flights
American AirlinesPriceFrom $580Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights

Traveling to a place near Helsinki?

Book flights to Helsinki if you plan to visit one of these locations
Vantaa
Espoo
Lahti
Kotka

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Helsinki?

It is quick and easy to find Washington, D.C. to Helsinki flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Helsinki that suits you.

Can I find flights from Washington, D.C. to Helsinki with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Helsinki on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Helsinki?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Helsinki.

I’m not ready to book a flight from Washington, D.C. to Helsinki right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to Helsinki flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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