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

A quick flight from Portugal to Washington, D.C. can take about 14h 55m. Lufthansa provides one of the quickest options available for as low as $668. The distance between Portugal and Washington, D.C. is about 3537 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 Aer Lingus start at $371 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 - Baltimore/Washington and Lisbon Humberto Delgado - Washington, D.C. Reagan-National.

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 $1,139, our data indicates the cheapest price to be $614. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $598.

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 (75%), TAP AIR PORTUGAL (75%) or airBaltic (60%) 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.

$381+ Cheap Flights from Portugal to Washington, D.C.

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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 October 10, 2026.

Wed 12/911:40 am -

1 stop12h 25m

Sun 3/79:05 pm -

1 stop9h 30m

Deal found 10/6

$593

Wed 12/234:55 pm -

1 stop29h 20m

Thu 1/78:30 pm -

1 stop14h 25m

Deal found 10/8

$594

Sun 11/226:45 pm -

1 stop27h 30m

Sat 12/58:30 pm -

1 stop16h 30m

Deal found 10/9

$598

Thu 12/102:00 pm -

1 stop33h 30m

Mon 12/147:40 pm -

1 stop12h 10m

Deal found 10/7

$603

Thu 11/191:45 pm -

1 stop33h 45m

Mon 11/237:40 pm -

1 stop12h 05m

Deal found 10/8

$605

Wed 11/1811:35 am -

3 stops34h 37m

Mon 11/236:50 am -

3 stops27h 25m

Deal found 10/8

$606

Thu 11/195:55 pm -

1 stop30h 10m

Wed 11/259:05 pm -

1 stop9h 30m

Deal found 10/8

$615

Tue 12/225:00 pm -

1 stop29h 15m

Sat 1/238:30 pm -

1 stop14h 35m

Deal found 10/9

$616

Thu 11/511:35 am -

3 stops34h 09m

Thu 11/1210:00 am -

3 stops24h 15m

Deal found 10/8

$617

Thu 11/198:30 am -

1 stop11h 45m

Wed 12/210:30 pm -

1 stop10h 00m

Deal found 10/9

$624

Mon 11/236:00 pm -

1 stop25h 40m

Mon 11/305:25 pm -

1 stop16h 35m

Deal found 10/9

$631

Sat 11/215:00 am -

1 stop15h 15m

Sat 11/285:25 pm -

1 stop18h 35m

Deal found 10/7

$632

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 October 10, 2026.

Tue 11/36:00 am -

1 stop14h 55m

Tue 11/106:00 pm -

1 stop16h 10m

Deal found 10/6

$668

Sat 12/1912:05 pm -

1 stop33h 55m

Sun 1/38:10 pm -

1 stop17h 20m

Deal found 10/10

$672

Thu 12/36:05 am -

1 stop14h 10m

Mon 12/75:25 pm -

1 stop11h 55m

Deal found 10/8

$673

Thu 12/105:00 am -

1 stop15h 45m

Thu 1/146:40 pm -

1 stop11h 45m

Deal found 10/9

$688

Fri 11/205:45 pm -

1 stop30h 05m

Thu 12/312:35 pm -

2 stops23h 20m

Deal found 10/6

$699

Thu 1/142:00 pm -

1 stop33h 40m

Sun 1/177:40 pm -

1 stop34h 00m

Deal found 10/8

$701

Fri 11/206:00 am -

1 stop19h 05m

Thu 12/38:35 am -

1 stop19h 55m

Deal found 10/6

$708

Thu 1/145:00 am -

2 stops18h 18m

Mon 1/186:00 am -

1 stop22h 20m

Deal found 10/10

$727

Thu 12/32:40 pm -

1 stop30h 15m

Mon 12/76:20 pm -

2 stops14h 30m

Deal found 10/8

$746

Thu 11/510:00 am -

2 stops16h 36m

Thu 11/1212:18 pm -

2 stops15h 37m

Deal found 10/8

$747

Wed 11/257:05 am -

1 stop15h 00m

Wed 12/26:55 pm -

1 stop17h 50m

Deal found 10/10

$748

Wed 11/44:30 pm -

3 stops32h 35m

Wed 11/116:00 pm -

3 stops35h 20m

Deal found 10/10

$772

Thu 11/195:00 am -

1 stop15h 45m

Wed 11/2512:35 pm -

2 stops16h 55m

Deal found 10/9

$696

Sat 11/146:00 am -

1 stop19h 05m

Sat 11/218:37 am -

1 stop19h 53m

Deal found 10/6

$708

Tue 11/312:05 pm -

1 stop33h 55m

Tue 11/105:25 pm -

2 stops15h 00m

Deal found 10/6

$711

Thu 11/195:00 am -

1 stop15h 55m

Wed 11/2510:30 pm -

Nonstop6h 50m

Deal found 10/10

$716

Wed 11/44:30 pm -

1 stop27h 45m

Wed 11/1110:30 pm -

1 stop20h 20m

Deal found 10/10

$740

Wed 11/46:00 pm -

2 stops27h 28m

Wed 11/1112:35 pm -

2 stops20h 15m

Deal found 10/9

$750

Thu 11/197:00 am -

1 stop15h 05m

Wed 11/256:55 pm -

1 stop17h 50m

Deal found 10/6

$750

Thu 11/195:00 am -

2 stops17h 59m

Wed 11/255:02 pm -

2 stops16h 38m

Deal found 10/10

$702

Thu 1/146:00 am -

1 stop13h 35m

Sun 1/176:00 pm -

1 stop16h 20m

Deal found 10/10

$713

Wed 12/97:05 am -

1 stop15h 00m

Sun 3/76:55 pm -

1 stop21h 50m

Deal found 10/6

$752

Fri 11/202:40 pm -

2 stops30h 57m

Fri 11/2711:13 am -

2 stops21h 37m

Deal found 10/6

$756

Mon 11/236:00 am -

2 stops20h 10m

Mon 11/308:37 am -

1 stop19h 53m

Deal found 10/9

$713

Thu 11/195:00 am -

2 stops17h 59m

Wed 12/211:55 am -

2 stops17h 40m

Deal found 10/9

$723

Sun 11/226:00 am -

1 stop14h 55m

Sun 11/298:37 am -

2 stops25h 43m

Deal found 10/8

$713

Thu 11/511:15 am -

2 stops16h 40m

Thu 11/121:20 pm -

2 stops16h 15m

Deal found 10/7

$724

Mon 11/96:00 am -

2 stops17h 15m

Mon 11/303:13 pm -

1 stop13h 17m

Deal found 10/10

$714

Fri 11/206:05 am -

3 stops21h 33m

Fri 11/276:00 am -

2 stops25h 35m

Deal found 10/6

$1,067

Tue 11/35:00 am -

2 stops17h 53m

Tue 11/101:20 pm -

2 stops17h 05m

Deal found 10/6

$731

Last-minute flights from Portugal to Washington, D.C.
Discover last-minute flight deals from Portugal to Washington, D.C.. Data last updated October 10, 2026 and is based on user searches.

Thu 11/511:35 am -

3 stops34h 37m

Thu 11/127:32 am -

3 stops26h 43m

Deal found 10/8

$616

Thu 11/511:35 am -

3 stops34h 09m

Thu 11/1210:00 am -

3 stops24h 15m

Deal found 10/8

$617

Wed 11/1811:35 am -

3 stops34h 37m

Mon 11/236:50 am -

3 stops27h 25m

Deal found 10/8

$606

Thu 11/191:45 pm -

1 stop33h 45m

Mon 11/237:40 pm -

1 stop12h 05m

Deal found 10/8

$605

Thu 11/195:55 pm -

1 stop30h 10m

Wed 11/259:05 pm -

1 stop9h 30m

Deal found 10/8

$615

Thu 11/198:30 am -

1 stop11h 45m

Wed 12/210:30 pm -

1 stop10h 00m

Deal found 10/9

$624

Thu 11/191:45 pm -

1 stop33h 55m

Wed 11/257:40 pm -

1 stop12h 10m

Deal found 10/8

$637

Sat 11/215:00 am -

1 stop15h 15m

Sat 11/285:25 pm -

1 stop18h 35m

Deal found 10/7

$632

Sun 11/226:45 pm -

1 stop27h 30m

Sat 12/58:30 pm -

1 stop16h 30m

Deal found 10/9

$598

Sun 11/2211:00 am -

1 stop14h 35m

Sun 11/2910:30 pm -

1 stop13h 30m

Deal found 10/8

$634

Mon 11/236:00 pm -

1 stop25h 40m

Mon 11/305:25 pm -

1 stop16h 35m

Deal found 10/9

$631

Tue 11/249:55 pm -

3 stops25h 35m

Tue 12/17:40 pm -

3 stops31h 30m

Deal found 10/10

$637

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 October 10, 2026.

Mon 11/305:40 pm -

3 stops50h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/6

$381

Tue 12/112:40 pm -

3 stops55h 35m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/7

$423

Tue 11/241:15 pm -

3 stops36h 15m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/6

$430

Wed 10/218:40 pm -

3 stops48h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/10

$434

Sun 12/276:35 am -

3 stops38h 45m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/9

$438

Sat 11/216:05 am -

1 stop14h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/9

$441

Tue 11/35:55 pm -

2 stops45h 29m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/6

$446

Wed 10/212:40 pm -

3 stops54h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/10

$447

Wed 12/25:30 am -

2 stops17h 28m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/9

$452

Tue 10/209:30 pm -

2 stops22h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/9

$453

Thu 11/59:40 pm -

3 stops41h 29m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/6

$453

Mon 11/308:40 pm -

1 stop24h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/6

$454

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

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$589 (Kissandfly.com)
One-way from	$381 (Kiwi.com)
Popular in	November
Cheapest in	January
Average price	$772
Good round-trip deal	$786 or less
Good one-way deal	$867 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. 1% potential increase in price ($15 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 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

Mon 11/30

5:40 pm-2:45 pm

3 stops50h 05m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$381

FaroWashington, D.C.

FAO Faro - IAD Washington, D.C. Dulles Intl

FAOIAD

Faro

Sat 11/21

6:05 am-3:15 pm

1 stop14h 10m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$441

LisbonBaltimore

LIS Lisbon Humberto Delgado - BWI Baltimore/Washington

LISBWI

Lisbon Humberto Delgado

Mon 1/11

5:30 am-7:20 pm

2 stops18h 50m

Baltimore/Washington

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$452

PortoWashington, D.C.

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

OPOIAD

Porto

Tue 10/20

9:30 pm-3:10 pm

2 stops22h 40m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$453

PortoWashington, D.C.

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

OPOIAD

Porto

Mon 11/30

8:40 pm-4:20 pm

1 stop24h 40m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$454

FaroWashington, D.C.

FAO Faro - IAD Washington, D.C. Dulles Intl

FAOIAD

Faro

Fri 11/6

6:05 am-6:30 pm

3 stops41h 25m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$455

FaroWashington, D.C.

FAO Faro - IAD Washington, D.C. Dulles Intl

FAOIAD

Faro

Sat 1/9

2:40 pm-3:40 pm

1 stop30h 00m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$456

FunchalWashington, D.C.

FNC Funchal Madeira - IAD Washington, D.C. Dulles Intl

FNCIAD

Funchal Madeira

Wed 11/25

3:15 pm-3:15 pm

3 stops29h 00m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-5:00 am

Nonstop0h 00m

$459

FaroWashington, D.C.

FAO Faro - IAD Washington, D.C. Dulles Intl

FAOIAD

Faro

Fri 11/6

11:10 am-8:30 pm

1 stop14h 20m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$460

FunchalBaltimore

FNC Funchal Madeira - BWI Baltimore/Washington

FNCBWI

Funchal Madeira

Wed 12/23

5:00 pm-6:40 pm

2 stops30h 40m

Baltimore/Washington

Wed 12/31

12:00 am-5:00 am

Nonstop0h 00m

$460

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

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

LIS-BWI

OPO-IAD

FNC-IAD

FAO-IAD

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

LIS-BWI

OPO-IAD

FNC-IAD

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 $657). 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 Friday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 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 130 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 Friday 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 26% 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

1,582 reviews

Reviews

1 / 20

8.0

Excellent

Kushal,Sep 2026

QRO - ATL

It was a nice one. Crew were friendly and helpful.

KLM

7.8

Good

1,582 reviews

KLM

7.8

Good

1,582 reviews

Reviews

1 / 20

8.0

Excellent

Kushal,Sep 2026

QRO - ATL

It was a nice one. Crew were friendly and helpful.

United Airlines

7.4

Good

10,339 reviews

KLM

7.8

Good

1,582 reviews

Reviews

1 / 20

8.0

Excellent

Kushal,Sep 2026

QRO - ATL

It was a nice one. Crew were friendly and helpful.

TAP AIR PORTUGAL

7.2

Good

2,379 reviews

KLM

7.8

Good

1,582 reviews

Reviews

1 / 20

8.0

Excellent

Kushal,Sep 2026

QRO - ATL

It was a nice one. Crew were friendly and helpful.

Lufthansa

6.8

Okay

8,274 reviews

KLM

7.8

Good

1,582 reviews

Reviews

1 / 20

8.0

Excellent

Kushal,Sep 2026

QRO - ATL

It was a nice one. Crew were friendly and helpful.

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 55m. Lufthansa provides one of the quickest options available for as low as $668. The distance between Portugal and Washington, D.C. is about 3537 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 Aer Lingus start at $371 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 - Baltimore/Washington and Lisbon Humberto Delgado - Washington, D.C. Reagan-National.
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 (75%), TAP AIR PORTUGAL (75%) or airBaltic (60%) 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 $1,139, our data indicates the cheapest price to be $614. The most popular route (Lisbon Humberto Delgado - Washington, D.C. Dulles Intl), is priced around $598.
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 $657). 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

Arlington

Woodbridge

Owings Mills

Lanham

Herndon

Tysons

Reston

Hyattsville

Rockville

Springfield

Fredericksburg

Falls Church

Laurel

Oxon Hill

Towson

Clinton

Hunt Valley

Waldorf

Silver Spring

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Washington, D.C. flight routes

Alternative routes for Portugal to Washington, D.C.

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$812	FlexibilityNo cancel fee	On-timeN/A

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$381+ Cheap flights from Portugal to Washington, D.C. (WAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/30. Fares are subject to change and may not be available on all flights or dates of travel.

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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 October 10, 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 October 10, 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 October 10, 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 October 10, 2026.

Last-minute flights from Portugal to Washington, D.C.Discover last-minute flight deals from Portugal to Washington, D.C.. Data last updated October 10, 2026 and is based on user searches.

Discover last-minute flight deals from Portugal to Washington, D.C.. Data last updated October 10, 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 October 10, 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 October 10, 2026.

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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.

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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 October 10, 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 Friday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 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 130 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 Friday 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 26% 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.?

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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.?

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Alternative routes for Portugal to Washington, D.C.

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Complete your trip

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Portugal and Washington, D.C. flights

Browse other Portugal and Washington, D.C. flight options. Last updated on October 10, 2026.

Popular flight searches

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Portugal to Washington, D.C. flights

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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 October 10, 2026.

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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 October 10, 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 October 10, 2026.

Last-minute flights from Portugal to Washington, D.C.
Discover last-minute flight deals from Portugal to Washington, D.C.. Data last updated October 10, 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 October 10, 2026.