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$209+ Cheap flights from Reagan-National (DCA) to Helsinki (HEL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — HEL
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap flight deals from Reagan-National to Helsinki

Cheapest flights from Reagan-National to Helsinki
Explore the most affordable flight options available from Reagan-National to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This Booking.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/15:00 pm
DCA
-
HEL
1 stop14h 00m
Finnair
Wed 4/85:20 pm
HEL
-
DCA
1 stop11h 57m
Finnair
Deal found 1/28$532
This oojo deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/13:21 pm
DCA
-
HEL
2 stops22h 49m
British Airways
Mon 3/95:00 pm
HEL
-
DCA
1 stop22h 59m
British Airways
Deal found 1/28$537
This Finnair deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/185:00 pm
DCA
-
HEL
1 stop13h 55m
Multiple Airlines
Wed 2/255:00 pm
HEL
-
DCA
1 stop24h 00m
Multiple Airlines
Deal found 1/28$539
This American Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/171:25 pm
DCA
-
HEL
1 stop17h 35m
American Airlines
Thu 4/234:25 pm
HEL
-
DCA
1 stop13h 34m
American Airlines
Deal found 1/28$543
This Air Canada deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/44:10 pm
DCA
-
HEL
2 stops19h 40m
Air Canada
Wed 3/111:55 pm
HEL
-
DCA
2 stops34h 10m
Air Canada
Deal found 1/28$552
This Air Canada deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:00 am
DCA
-
HEL
2 stops29h 50m
Air Canada
Mon 3/166:50 am
HEL
-
DCA
2 stops38h 41m
Air Canada
Deal found 1/28$553
This Delta deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/411:06 am
DCA
-
HEL
2 stops22h 19m
Delta
Fri 3/137:00 am
HEL
-
DCA
2 stops22h 44m
Delta
Deal found 1/28$554
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/12:00 pm
DCA
-
HEL
2 stops21h 55m
United Airlines
Wed 4/86:35 am
HEL
-
DCA
2 stops23h 08m
United Airlines
Deal found 1/28$555
This United Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/303:30 pm
DCA
-
HEL
2 stops20h 20m
United Airlines
Wed 2/46:55 am
HEL
-
DCA
2 stops15h 36m
United Airlines
Deal found 1/28$556
This Air Canada deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/26:50 pm
DCA
-
HEL
2 stops41h 00m
Air Canada
Tue 3/107:05 am
HEL
-
DCA
2 stops31h 50m
Air Canada
Deal found 1/28$557

Find flight deals from Reagan-National to Helsinki

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 29, 2026.

Most accurate provider

AranGrant
2 stars

Most trusted provider

AranGrant
2 stars

Round-trip from

$532
(Booking.com)

One-way from

$209
(oojo)

Popular in

December

Cheapest in

February

Average price

$516
Provider with most accurate pricing for Washington, D.C. Reagan-National-Helsinki-Vantaa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-Helsinki-Vantaa flights.
Search Deals
From Washington, D.C. Reagan-National to Helsinki-Vantaa
Search Deals
One-way flight from Washington, D.C. Reagan-National to Helsinki-Vantaa
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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, Cheapflights users made 2,558,603 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Helsinki that are best for you.

Fly from

Reagan-National

Fly to

Helsinki

Route

Depart

Return

Price

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Wed 4/1

5:00 pm-2:00 pm

1 stop14h 00m

Helsinki-Vantaa

Wed 4/8

5:20 pm-10:17 pm

1 stop11h 57m

$532

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Sun 3/1

3:21 pm-9:10 pm

2 stops22h 49m

Helsinki-Vantaa

Mon 3/9

5:00 pm-9:59 am

1 stop22h 59m

$537

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Wed 3/4

11:06 am-4:25 pm

2 stops22h 19m

Helsinki-Vantaa

Fri 3/13

7:00 am-11:44 pm

2 stops22h 44m

$554

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Wed 4/1

2:00 pm-6:55 pm

2 stops21h 55m

Helsinki-Vantaa

Wed 4/8

6:35 am-10:43 pm

2 stops23h 08m

$555

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Wed 2/25

11:06 am-3:25 pm

2 stops21h 19m

Helsinki-Vantaa

Sat 2/28

6:15 am-10:12 pm

2 stops22h 57m

$558

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Wed 3/4

11:06 am-4:25 pm

2 stops22h 19m

Helsinki-Vantaa

Sun 3/15

2:05 pm-5:49 pm

2 stops33h 44m

$558

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Thu 3/19

11:00 am-5:25 pm

2 stops24h 25m

Helsinki-Vantaa

Wed 4/1

7:15 am-10:37 pm

2 stops22h 22m

$561

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Fri 4/17

5:30 pm-2:00 pm

1 stop13h 30m

Helsinki-Vantaa

Thu 4/23

5:20 pm-10:17 pm

1 stop11h 57m

$565

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Fri 4/17

11:05 am-1:10 pm

2 stops19h 05m

Helsinki-Vantaa

Thu 4/23

6:35 am-7:53 pm

2 stops20h 18m

$568

Washington, D.C.Helsinki

DCA - HEL

DCAHEL

Washington, D.C. Reagan-National

Wed 2/18

5:59 pm-5:25 pm

2 stops16h 26m

Helsinki-Vantaa

Wed 2/25

7:00 am-5:00 pm

2 stops17h 00m

$568

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 24 results
1
2
3
  • Most accurate provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Helsinki flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C. Reagan-National Airport-Helsinki flight deals on Cheapflights vs. AranGrant 90-95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National Airport-Helsinki flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Reagan-National Airport-Helsinki flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Reagan-National Airport-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Reagan-National to Helsinki

Have a flexible travel schedule? Discover the best time to fly to Helsinki from Reagan-National with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Helsinki. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Helsinki from Washington, D.C. Reagan-National?

    For a flight from Washington, D.C. Reagan-National to Helsinki, you will be flying into Helsinki-Vantaa. Helsinki-Vantaa (HEL) is just 10.6 mi from the center of the city. Helsinki-Vantaa is the only Helsinki airport and it handles 0 inbound flights from Washington, D.C. Reagan-National per day. 0 airlines have flights to Helsinki-Vantaa from Washington, D.C. Reagan-National on a regular basis.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Helsinki?

    For as low as $532, Finnair can have you in Helsinki from Washington, D.C. Reagan-National Airport in 14h. There are 4302 mi between Washington, D.C. Reagan-National Airport and Helsinki. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Reagan-National to Helsinki that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Helsinki flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Helsinki?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Helsinki.

  • Can I find deals for business class flights from Reagan-National to Helsinki?

    Yes. Cheapflights offers flight deals from Reagan-National to Helsinki by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Helsinki?

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

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