How long is the flight from Portugal to Washington, D.C.?

A quick flight from Portugal to Washington, D.C. can take about 14h 45m. KLM provides one of the quickest options available for as low as $664. The distance between Portugal and Washington, D.C. is about 3493 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines to fly from Portugal to Washington, D.C. one-way?

To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $334. American Airlines flights start at $360 while deals on TAP AIR PORTUGAL start at $365 one-way.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular routes from Portugal to Washington, D.C.?

The most popular flight routes from Portugal to Washington, D.C. are Lisbon Humberto Delgado - Washington, D.C. Dulles Intl, Lisbon Humberto Delgado - Washington, D.C. Reagan-National and Lisbon Humberto Delgado - Baltimore/Washington.

What are the cheapest flights from Portugal to Washington, D.C.?

Looking for the cheapest flight from Portugal to Washington, D.C.? While on average our users pay $1,747, our data indicates the cheapest price to be $576. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $586.

What are the most reliable airlines from Portugal to Washington, D.C.?

No one likes to see their flight delayed. When booking a flight from Portugal to Washington, D.C. consider choosing JetBlue (70%), TAP AIR PORTUGAL (70%) or airBaltic (65%) as they are the most reliable in getting you off to your destination on time.

Can I find deals for flights from Portugal to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Portugal to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Portugal to Washington, D.C.?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Washington, D.C..

Can I find deals for business class flights from Portugal to Washington, D.C.?

Yes. Cheapflights offers flight deals from Portugal to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$357+ Cheap Flights from Portugal to Washington, D.C.

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Portugal to Washington, D.C. with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Portugal to Washington, D.C.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Portugal to Washington, D.C.
Explore the most affordable flight options available from Portugal to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 12, 2026.

Thu 10/87:20 am -

1 stop13h 35m

Wed 10/1410:25 pm -

1 stop14h 30m

Deal found 8/9

$553

Thu 10/87:20 am -

1 stop17h 15m

Sat 10/179:30 pm -

1 stop13h 50m

Deal found 8/9

$553

Tue 10/63:00 pm -

1 stop12h 15m

Mon 10/128:30 pm -

1 stop12h 20m

Deal found 8/9

$575

Thu 10/19:00 am -

1 stop11h 10m

Wed 10/145:45 pm -

1 stop11h 25m

Deal found 8/12

$581

Thu 9/176:35 am -

1 stop17h 20m

Wed 9/2310:25 pm -

1 stop19h 50m

Deal found 8/10

$586

Tue 12/18:30 am -

1 stop11h 15m

Mon 12/75:25 pm -

1 stop11h 35m

Deal found 8/10

$589

Fri 10/97:00 am -

1 stop12h 25m

Sun 10/115:40 pm -

1 stop21h 55m

Deal found 8/9

$590

Thu 9/177:00 am -

1 stop13h 10m

Wed 9/3010:35 pm -

1 stop16h 50m

Deal found 8/11

$594

Thu 9/176:35 am -

1 stop17h 20m

Wed 9/236:15 pm -

2 stops24h 00m

Deal found 8/10

$603

Thu 8/275:00 am -

1 stop15h 35m

Thu 9/109:45 pm -

1 stop12h 40m

Deal found 8/11

$604

Thu 9/175:00 am -

1 stop15h 35m

Wed 9/306:26 pm -

2 stops15h 59m

Deal found 8/10

$605

Thu 9/178:25 am -

1 stop15h 30m

Wed 9/239:30 pm -

1 stop20h 45m

Deal found 8/12

$607

Best flights from Portugal to Washington, D.C.
Discover carefully curated flight deals from Portugal to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 12, 2026.

Wed 9/95:00 am -

1 stop15h 35m

Wed 9/169:45 pm -

1 stop12h 40m

Deal found 8/12

$604

Thu 9/175:00 am -

1 stop15h 35m

Wed 9/306:26 pm -

2 stops15h 59m

Deal found 8/9

$605

Fri 9/43:35 pm -

1 stop29h 00m

Tue 9/156:15 pm -

1 stop12h 00m

Deal found 8/12

$608

Thu 10/1512:25 pm -

1 stop11h 35m

Sun 10/185:00 pm -

1 stop13h 45m

Deal found 8/12

$612

Sat 11/77:00 am -

1 stop15h 05m

Tue 11/106:55 pm -

1 stop17h 50m

Deal found 8/11

$638

Wed 9/3011:40 am -

Nonstop8h 30m

Sun 10/2511:30 pm -

Nonstop7h 10m

Deal found 8/12

$678

Thu 9/37:20 pm -

2 stops24h 00m

Tue 9/88:20 pm -

1 stop16h 15m

Deal found 8/9

$699

Fri 9/45:05 am -

1 stop16h 00m

Tue 9/1510:25 pm -

Nonstop7h 05m

Deal found 8/12

$708

Tue 12/16:00 am -

2 stops17h 52m

Mon 12/79:00 am -

1 stop19h 30m

Deal found 8/10

$710

Wed 9/95:00 am -

2 stops17h 27m

Wed 9/166:19 pm -

2 stops16h 06m

Deal found 8/12

$609

Thu 11/198:20 am -

2 stops38h 25m

Mon 11/236:10 am -

2 stops20h 30m

Deal found 8/12

$620

Fri 9/411:05 am -

1 stop10h 43m

Tue 9/151:33 pm -

1 stop14h 32m

Deal found 8/12

$662

Tue 9/85:00 am -

2 stops17h 27m

Wed 9/166:19 pm -

2 stops16h 06m

Deal found 8/12

$609

Thu 9/1011:50 am -

1 stop15h 00m

Tue 9/152:59 pm -

1 stop10h 16m

Deal found 8/12

$730

Thu 10/19:55 am -

1 stop14h 45m

Wed 10/149:30 pm -

1 stop16h 35m

Deal found 8/12

$664

Fri 10/911:25 am -

2 stops16h 33m

Sun 10/116:30 pm -

2 stops16h 00m

Deal found 8/8

$609

Sat 9/512:10 pm -

1 stop14h 38m

Sun 9/135:55 pm -

1 stop10h 50m

Deal found 8/12

$730

Fri 10/911:25 am -

2 stops17h 12m

Sun 10/115:15 pm -

2 stops17h 15m

Deal found 8/8

$609

Tue 9/88:55 pm -

1 stop25h 20m

Sat 9/197:25 pm -

1 stop20h 15m

Deal found 8/12

$699

Tue 9/812:15 pm -

1 stop14h 35m

Mon 9/144:30 pm -

1 stop9h 25m

Deal found 8/12

$730

Wed 9/95:00 am -

2 stops17h 46m

Wed 9/169:45 pm -

1 stop12h 40m

Deal found 8/12

$609

Thu 9/312:35 pm -

2 stops26h 34m

Mon 9/78:10 am -

2 stops20h 35m

Deal found 8/10

$733

Thu 8/275:00 am -

2 stops18h 33m

Thu 9/109:45 pm -

1 stop12h 40m

Deal found 8/11

$609

Thu 9/175:00 am -

1 stop15h 35m

Wed 9/236:26 pm -

2 stops18h 24m

Deal found 8/12

$611

Fri 9/45:00 am -

1 stop15h 35m

Tue 9/156:15 pm -

1 stop12h 00m

Deal found 8/12

$611

Sat 10/315:00 am -

1 stop15h 55m

Sat 1/1612:30 pm -

2 stops17h 55m

Deal found 8/10

$612

Thu 9/175:00 am -

2 stops16h 32m

Wed 9/305:35 pm -

2 stops16h 50m

Deal found 8/9

$613

Tue 9/85:00 am -

2 stops17h 48m

Tue 9/155:35 pm -

2 stops16h 50m

Deal found 8/11

$613

Thu 10/15:00 am -

2 stops17h 46m

Wed 10/145:13 pm -

2 stops17h 12m

Deal found 8/11

$613

Fri 9/45:00 am -

2 stops16h 59m

Tue 9/1511:40 am -

2 stops16h 10m

Deal found 8/12

$616

Last-minute flights from Portugal to Washington, D.C.
Discover last-minute flight deals from Portugal to Washington, D.C.. Data last updated August 12, 2026 and is based on user searches.

Thu 8/275:00 am -

1 stop15h 35m

Thu 9/109:45 pm -

1 stop12h 40m

Deal found 8/11

$604

Thu 8/275:00 am -

2 stops18h 33m

Thu 9/109:45 pm -

1 stop12h 40m

Deal found 8/12

$609

Fri 9/45:00 am -

1 stop15h 35m

Tue 9/159:45 pm -

1 stop15h 05m

Deal found 8/10

$609

Fri 9/45:00 am -

1 stop15h 35m

Tue 9/1512:25 pm -

2 stops15h 25m

Deal found 8/12

$611

Sun 9/66:30 am -

1 stop14h 35m

Sun 9/139:45 pm -

1 stop12h 45m

Deal found 8/9

$607

Tue 9/85:00 am -

2 stops17h 27m

Wed 9/166:19 pm -

2 stops16h 06m

Deal found 8/12

$609

Thu 9/176:35 am -

1 stop17h 20m

Wed 9/2310:25 pm -

1 stop19h 50m

Deal found 8/10

$586

Thu 9/177:00 am -

1 stop13h 10m

Wed 9/3010:35 pm -

1 stop16h 50m

Deal found 8/11

$594

Thu 9/176:35 am -

1 stop17h 20m

Wed 9/236:15 pm -

2 stops24h 00m

Deal found 8/10

$603

Thu 9/175:00 am -

1 stop15h 35m

Wed 9/306:26 pm -

2 stops15h 59m

Deal found 8/10

$605

Thu 9/178:25 am -

1 stop15h 30m

Wed 9/239:30 pm -

1 stop20h 45m

Deal found 8/12

$607

Thu 9/248:25 am -

1 stop15h 30m

Mon 9/285:45 pm -

1 stop24h 25m

Deal found 8/8

$610

One-way flights from Portugal to Washington, D.C.
Search for one-way flight options from Portugal to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 12, 2026.

Thu 12/38:20 am -

1 stop13h 00m

Deal found 8/9

$357

Fri 10/168:20 am -

2 stops15h 45m

Deal found 8/9

$363

Wed 10/2812:30 pm -

2 stops33h 54m

Deal found 8/12

$363

Mon 10/58:40 pm -

1 stop27h 10m

Deal found 8/9

$368

Sat 11/149:55 pm -

2 stops24h 10m

Deal found 8/9

$376

Tue 10/279:55 pm -

2 stops27h 00m

Deal found 8/9

$376

Thu 12/38:20 am -

2 stops16h 35m

Deal found 8/9

$377

Wed 9/162:40 pm -

3 stops53h 30m

Deal found 8/10

$380

Thu 10/89:15 pm -

2 stops27h 25m

Deal found 8/12

$384

Sat 11/146:30 am -

2 stops15h 35m

Deal found 8/9

$385

Wed 10/147:20 am -

1 stop17h 20m

Deal found 8/11

$393

Wed 11/118:20 am -

2 stops39h 04m

Deal found 8/8

$398

Find flight deals from Portugal to Washington, D.C.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$553
One-way from	$357 (Iberia)
Popular in	November
Cheapest in	January
Average price	$771
Good round-trip deal	$750 or less
Good one-way deal	$742 or less

Provider with most accurate pricing for Lisbon Humberto Delgado-Washington, D.C. (WAS) flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Washington, D.C. (WAS) flights.

Search Deals

From Portugal to Washington, D.C. (WAS)

Search Deals

One-way flight from Portugal to Washington, D.C. (WAS)

Search Deals

Highest demand for flights based on searches. 4% potential increase in price ($38 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2026

Search Deals

Price to beat on a round-trip flight from Portugal to Washington, D.C. (WAS).

Search Deals

Price to beat on a one-way flight from Portugal to Washington, D.C. (WAS).

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portugal to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Wed 9/9

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 9/16

9:45 pm-3:25 pm

1 stop12h 40m

$604

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Thu 9/17

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 9/30

6:26 pm-3:25 pm

2 stops15h 59m

$605

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Fri 9/4

3:35 pm-3:35 pm

1 stop29h 00m

Washington, D.C. Dulles Intl

Tue 9/15

6:15 pm-11:15 am

1 stop12h 00m

$608

PortoBaltimore

OPO Porto - BWI Baltimore/Washington

OPOBWI

Porto

Wed 9/9

5:00 am-5:27 pm

2 stops17h 27m

Baltimore/Washington

Wed 9/16

6:19 pm-3:25 pm

2 stops16h 06m

$609

PortoBaltimore

OPO Porto - BWI Baltimore/Washington

OPOBWI

Porto

Tue 9/8

5:00 am-5:27 pm

2 stops17h 27m

Baltimore/Washington

Wed 9/16

6:19 pm-3:25 pm

2 stops16h 06m

$609

PortoBaltimore

OPO Porto - BWI Baltimore/Washington

OPOBWI

Porto

Fri 10/9

11:25 am-10:58 pm

2 stops16h 33m

Baltimore/Washington

Sun 10/11

6:30 pm-3:30 pm

2 stops16h 00m

$609

PortoWashington, D.C.

OPO Porto - DCA Washington, D.C. Reagan-National

OPODCA

Porto

Fri 10/9

11:25 am-11:37 pm

2 stops17h 12m

Washington, D.C. Reagan-National

Sun 10/11

5:15 pm-3:30 pm

2 stops17h 15m

$609

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Wed 9/9

5:00 am-5:46 pm

2 stops17h 46m

Washington, D.C. Dulles Intl

Wed 9/16

9:45 pm-3:25 pm

1 stop12h 40m

$609

PortoWashington, D.C.

OPO Porto - IAD Washington, D.C. Dulles Intl

OPOIAD

Porto

Thu 8/27

5:00 am-6:33 pm

2 stops18h 33m

Washington, D.C. Dulles Intl

Thu 9/10

9:45 pm-3:25 pm

1 stop12h 40m

$609

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Thu 9/17

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Wed 9/23

6:26 pm-5:50 pm

2 stops18h 24m

$611

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Portugal to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Portugal with our price prediction graph.

LIS-IAD

OPO-IAD

OPO-BWI

OPO-DCA

LIS-BWI

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.

Cheapflights Insights

Everything you need to know about your flight from Portugal to Washington, D.C.

PT0-WAS

LIS-IAD

OPO-IAD

OPO-BWI

OPO-DCA

What is the cheapest month to book a flight from Portugal to Washington, D.C.?

Currently, December is the cheapest month in which you can book a flight from Portugal to Washington, D.C. (average of $631). Flying from Portugal to Washington, D.C. in July is currently the most expensive (average of $924). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PT to WAS?

When flying from Portugal to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Portugal to Washington, D.C.

The most flights from PT0 to WAS are scheduled on a Monday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

How often are flights from Portugal to Washington, D.C. delayed?

About 29% of weekly flights between Portugal and Washington, D.C. have experienced delays in the past year, with the average delay time being 125 minutes.

What is the most punctual flight time for Portugal to Washington, D.C. flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Portugal to Washington, D.C. flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 25% of flights being delayed.

How far ahead should I book a flight from Portugal to Washington, D.C.?

To ensure you get the cheapest price possible for a flight from Portugal to Washington, D.C., you should look to book at least 89 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with KLM,United Airlines, andTAP AIR PORTUGAL from Portugal to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,557 reviews

Reviews

1 / 20

4.0

Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

KLM

7.8

Good

1,557 reviews

KLM

7.8

Good

1,557 reviews

Reviews

1 / 20

4.0

Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

United Airlines

7.4

Good

10,111 reviews

KLM

7.8

Good

1,557 reviews

Reviews

1 / 20

4.0

Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

TAP AIR PORTUGAL

7.2

Good

2,365 reviews

KLM

7.8

Good

1,557 reviews

Reviews

1 / 20

4.0

Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

Lufthansa

6.8

Okay

8,180 reviews

KLM

7.8

Good

1,557 reviews

Reviews

1 / 20

4.0

Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

Related info for your journey

How long is the flight from Portugal to Washington, D.C.?
A quick flight from Portugal to Washington, D.C. can take about 14h 45m. KLM provides one of the quickest options available for as low as $664. The distance between Portugal and Washington, D.C. is about 3493 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines to fly from Portugal to Washington, D.C. one-way?
To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $334. American Airlines flights start at $360 while deals on TAP AIR PORTUGAL start at $365 one-way.
What are the most popular routes from Portugal to Washington, D.C.?
The most popular flight routes from Portugal to Washington, D.C. are Lisbon Humberto Delgado - Washington, D.C. Dulles Intl, Lisbon Humberto Delgado - Washington, D.C. Reagan-National and Lisbon Humberto Delgado - Baltimore/Washington.
What are the most reliable airlines from Portugal to Washington, D.C.?
No one likes to see their flight delayed. When booking a flight from Portugal to Washington, D.C. consider choosing JetBlue (70%), TAP AIR PORTUGAL (70%) or airBaltic (65%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Portugal to Washington, D.C.?
Looking for the cheapest flight from Portugal to Washington, D.C.? While on average our users pay $1,747, our data indicates the cheapest price to be $576. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $586.
Can I find deals for flights from Portugal to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Portugal to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portugal to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Washington, D.C..
Can I find deals for business class flights from Portugal to Washington, D.C.?
Yes. Cheapflights offers flight deals from Portugal to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Portugal to Washington, D.C.?
Currently, December is the cheapest month in which you can book a flight from Portugal to Washington, D.C. (average of $631). Flying from Portugal to Washington, D.C. in July is currently the most expensive (average of $924). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Alexandria

Owings Mills

Arlington

Tysons

Springfield

Lanham

Reston

Herndon

Rockville

Hyattsville

Fredericksburg

Falls Church

Hanover

Laurel

Oxon Hill

Clinton

Hunt Valley

Woodbridge

Silver Spring

Largo

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Flights by cabin class

Other flight options

Popular flights

Top destinations

Washington, D.C. flight routes

Alternative routes for Portugal to Washington, D.C.

Heathrow to Dulles Intl flights

Frankfurt to Dulles Intl flights

Charles de Gaulle to Dulles Intl flights

Heathrow to Reagan-National flights

London City to Dulles Intl flights

Gatwick to Dulles Intl flights

Madrid to Dulles Intl flights

Barcelona-El Prat to Dulles Intl flights

Orly to Dulles Intl flights

Leonardo da Vinci/Fiumicino to Dulles Intl flights

Dublin to Dulles Intl flights

Lisbon to Dulles Intl flights

Vienna to Dulles Intl flights

Istanbul to Dulles Intl flights

Munich to Dulles Intl flights

Amsterdam to Dulles Intl flights

Athens to Dulles Intl flights

Berlin to Dulles Intl flights

Vicenza to Dulles Intl flights

Geneva to Dulles Intl flights

Zurich to Dulles Intl flights

Malpensa to Dulles Intl flights

Bruxelles-National to Reagan-National flights

Manchester to Dulles Intl flights

Athens to Reagan-National flights

Edinburgh to Dulles Intl flights

Manchester to Reagan-National flights

Top 2 airlines flying from Portugal to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$497	Average$881	FlexibilityNo cancel fee	On-time69%
TAP AIR PORTUGAL	Cheapest$520	Average$859	FlexibilityNo cancel fee	On-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$357+ Cheap flights from Portugal to Washington, D.C. (WAS)

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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portugal to Washington, D.C. with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Portugal to Washington, D.C.

Cheapest flights from Portugal to Washington, D.C.Explore the most affordable flight options available from Portugal to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 12, 2026.

Explore the most affordable flight options available from Portugal to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 12, 2026.

Best flights from Portugal to Washington, D.C.Discover carefully curated flight deals from Portugal to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 12, 2026.

Discover carefully curated flight deals from Portugal to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 12, 2026.

Last-minute flights from Portugal to Washington, D.C.Discover last-minute flight deals from Portugal to Washington, D.C.. Data last updated August 12, 2026 and is based on user searches.

Discover last-minute flight deals from Portugal to Washington, D.C.. Data last updated August 12, 2026 and is based on user searches.

One-way flights from Portugal to Washington, D.C.Search for one-way flight options from Portugal to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 12, 2026.

Search for one-way flight options from Portugal to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 12, 2026.

Find flight deals from Portugal to Washington, D.C.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portugal to Washington, D.C. that are best for you.

Best time to book a flight from Portugal to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Portugal with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from Portugal to Washington, D.C.?

What is the cheapest time of day to fly from PT to WAS?

Find hourly flight availability from Portugal to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 12, 2026.

When flying from Portugal to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Portugal to Washington, D.C.

The most flights from PT0 to WAS are scheduled on a Monday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).

How often are flights from Portugal to Washington, D.C. delayed?

About 29% of weekly flights between Portugal and Washington, D.C. have experienced delays in the past year, with the average delay time being 125 minutes.

What is the most punctual flight time for Portugal to Washington, D.C. flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Portugal to Washington, D.C. flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 25% of flights being delayed.

How far ahead should I book a flight from Portugal to Washington, D.C.?

To ensure you get the cheapest price possible for a flight from Portugal to Washington, D.C., you should look to book at least 89 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Washington, D.C.

Peruse reviews from past customers who have flown with KLM,United Airlines, andTAP AIR PORTUGAL from Portugal to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from Portugal to Washington, D.C.?

What are the cheapest airlines to fly from Portugal to Washington, D.C. one-way?

What are the most popular routes from Portugal to Washington, D.C.?

What are the most reliable airlines from Portugal to Washington, D.C.?

What are the cheapest flights from Portugal to Washington, D.C.?

Can I find deals for flights from Portugal to Washington, D.C. that include hotel bookings?

How can I find direct flights from Portugal to Washington, D.C.?

Can I find deals for business class flights from Portugal to Washington, D.C.?

What is the cheapest month to book a flight from Portugal to Washington, D.C.?

Traveling to a place near Washington, D.C.?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portugal to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Washington, D.C. by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Portugal to Washington, D.C. by cabin class

Find flights from Portugal to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Portugal and Washington, D.C. flights

Browse other Portugal and Washington, D.C. flight options. Last updated on August 12, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Portugal to Washington, D.C. flights

Consider these flights traveling from Portugal to Washington, D.C..

Other flights to Washington, D.C.

Explore flights to Washington, D.C. departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 12, 2026.

Top 2 airlines flying from Portugal to Washington, D.C.

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Portugal to Washington, D.C.
Explore the most affordable flight options available from Portugal to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 12, 2026.

Best flights from Portugal to Washington, D.C.
Discover carefully curated flight deals from Portugal to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 12, 2026.

Last-minute flights from Portugal to Washington, D.C.
Discover last-minute flight deals from Portugal to Washington, D.C.. Data last updated August 12, 2026 and is based on user searches.

One-way flights from Portugal to Washington, D.C.
Search for one-way flight options from Portugal to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 12, 2026.