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

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

How many flights depart from Portugal to Washington, D.C. on average per week?

The number of flights available between Portugal and Washington, D.C. is 1 per week as of February 2026. The most frequent departure day is Tue, with 100% of weekly flights leaving on this day.

What is the cheapest airline that flies from Portugal to Washington, D.C.?

Iberia, American Airlines, and British Airways are the most popular carriers operating from Portugal to Washington, D.C.

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

Historically, on average around 32% of flights between Portugal and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 135 minutes.

What airlines fly to Washington, D.C.?

TAP AIR PORTUGAL, United Airlines and British Airways are the top three most popular airlines that fly to Washington, D.C. from Portugal according to our data. TAP AIR PORTUGAL is the first choice among our users, with 58% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 3 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

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

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 27% of their flights experiencing any sort of delay.

How long does it take to fly to Washington, D.C.?

Flight times from Portugal to Washington, D.C. vary, but if you’re flying out of Lisbon and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 7h 55m on average. Another popular route from Portugal to Washington, D.C. is flying from Porto to Washington, D.C. Dulles Intl Airport, which will take roughly 13h 05m. Keep in mind that layovers or delays could extend your travel time.

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

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

When did momondo last update prices for flights from Portugal to Washington, D.C.?

Prices for flights from Portugal to Washington, D.C. are refreshed on a daily basis.

How many operators does momondo search for flights from Portugal to Washington, D.C.?

As of February 2026, there are 3 operators available to choose from for flights from Portugal to Washington, D.C..

How old do you have to be to fly from Portugal to Washington, D.C.?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portugal to Washington, D.C..

What documentation or ID do you need to fly to Washington, D.C.?

The travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$301 Cheap Flights from Portugal to Washington, D.C. in 2026

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

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One-way

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Recent round-trip flight deals from Portugal to Washington, D.C.

Enter your travel dates to find the best prices.

7:20 pm - 3:20 pm

OPO

IAD

25h 00m

1 stop

8:20 pm - 7:55 am

IAD

OPO

30h 35m

1 stop

$472SWISS

Fri, Mar 6 - Mon, May 25

5:00 am - 4:50 pm

LIS

IAD

15h 50m

1 stop

5:20 pm - 12:45 pm

IAD

LIS

15h 25m

1 stop

$485Multiple Airlines

Wed, Mar 18 - Wed, Mar 25

9:00 am - 3:05 pm

OPO

IAD

11h 05m

1 stop

10:35 pm - 11:10 pm

IAD

OPO

19h 35m

1 stop

$504TAP AIR PORTUGAL

Tue, Apr 21 - Wed, Apr 29

10:30 pm - 8:35 pm

OPO

IAD

27h 05m

1 stop

10:35 pm - 7:00 pm

IAD

OPO

15h 25m

1 stop

$509TAP AIR PORTUGAL

Tue, Apr 21 - Wed, Apr 29

5:00 am - 4:05 pm

OPO

IAD

16h 05m

1 stop

1:19 pm - 10:30 am

IAD

OPO

17h 11m

2 stops

$570Delta

Mon, Mar 2 - Mon, Mar 9

5:00 am - 7:09 pm

OPO

IAD

19h 09m

2 stops

1:19 pm - 10:30 am

IAD

OPO

17h 11m

2 stops

$575Delta

Mon, Mar 2 - Mon, Mar 9

4:20 pm - 3:35 pm

OPO

IAD

28h 15m

1 stop

6:10 pm - 3:30 pm

IAD

OPO

16h 20m

1 stop

$582KLM

Tue, May 5 - Mon, May 11

5:00 am - 3:35 pm

OPO

IAD

15h 35m

1 stop

9:45 pm - 10:00 pm

IAD

OPO

19h 15m

1 stop

$586KLM

Thu, Apr 2 - Sat, Apr 11

6:00 am - 9:17 pm

OPO

BWI

44h 17m

2 stops

6:20 am - 9:30 am

BWI

OPO

23h 10m

2 stops

$601United Airlines

Mon, Mar 2 - Mon, Mar 9

5:00 am - 4:50 pm

LIS

IAD

15h 50m

1 stop

10:30 pm - 10:30 am

IAD

LIS

7h 00mnonstop

$604United Airlines

Fri, Mar 27 - Sun, Apr 5

TAP AIR PORTUGAL flights from Portugal to Washington, D.C.

Our best TAP AIR PORTUGAL deals on Portugal to Washington, D.C. flight tickets

TAP AIR PORTUGAL

Apr 21

OPO9:00 amPorto

11h 05m

1 stop

IAD3:05 pmWashington, D.C. Dulles Intl

Apr 29

IAD10:35 pmWashington, D.C. Dulles Intl

19h 35m

1 stop

OPO11:10 pmPorto

$504

TAP AIR PORTUGAL

Apr 21

OPO10:30 pmPorto

27h 05m

1 stop

IAD8:35 pmWashington, D.C. Dulles Intl

Apr 29

IAD10:35 pmWashington, D.C. Dulles Intl

15h 25m

1 stop

OPO7:00 pmPorto

$509

TAP AIR PORTUGAL

Apr 9

OPO9:00 amPorto

11h 05m

1 stop

IAD3:05 pmWashington, D.C. Dulles Intl

Apr 18

IAD10:35 pmWashington, D.C. Dulles Intl

11h 55m

1 stop

OPO3:30 pmPorto

$514

SWISS flights from Portugal to Washington, D.C.

Our best SWISS deals on Portugal to Washington, D.C. flight tickets

SWISS

Mar 6

OPO7:20 pmPorto

25h 00m

1 stop

IAD3:20 pmWashington, D.C. Dulles Intl

May 25

IAD8:20 pmWashington, D.C. Dulles Intl

30h 35m

1 stop

OPO7:55 amPorto

$472

SWISS

Feb 20

LIS3:25 pmLisbon Humberto Delgado

30h 15m

1 stop

IAD4:40 pmWashington, D.C. Dulles Intl

Mar 1

IAD8:30 pmWashington, D.C. Dulles Intl

13h 05m

1 stop

LIS2:35 pmLisbon Humberto Delgado

$598

SWISS

Mar 18

OPO7:20 pmPorto

24h 00m

1 stop

IAD3:20 pmWashington, D.C. Dulles Intl

Mar 25

IAD5:20 pmWashington, D.C. Dulles Intl

34h 35m

1 stop

OPO7:55 amPorto

$627

momondo 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

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Fri 3/6

7:20 pm-3:20 pm

1 stop25h 00m

Washington, D.C. Dulles Intl

Mon 5/25

8:20 pm-7:55 am

1 stop30h 35m

$472

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 3/18

5:00 am-4:50 pm

1 stop15h 50m

Washington, D.C. Dulles Intl

Wed 3/25

5:20 pm-12:45 pm

1 stop15h 25m

$485

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Tue 4/21

9:00 am-3:05 pm

1 stop11h 05m

Washington, D.C. Dulles Intl

Wed 4/29

10:35 pm-11:10 pm

1 stop19h 35m

$504

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Tue 4/21

10:30 pm-8:35 pm

1 stop27h 05m

Washington, D.C. Dulles Intl

Wed 4/29

10:35 pm-7:00 pm

1 stop15h 25m

$509

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Mon 3/2

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Mon 3/9

1:19 pm-10:30 am

2 stops17h 11m

$570

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Mon 3/2

5:00 am-7:09 pm

2 stops19h 09m

Washington, D.C. Dulles Intl

Mon 3/9

1:19 pm-10:30 am

2 stops17h 11m

$575

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Tue 5/5

4:20 pm-3:35 pm

1 stop28h 15m

Washington, D.C. Dulles Intl

Mon 5/11

6:10 pm-3:30 pm

1 stop16h 20m

$582

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 4/2

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Sat 4/11

9:45 pm-10:00 pm

1 stop19h 15m

$586

PortoBaltimore

OPO - BWI

OPOBWI

Porto

Mon 3/2

6:00 am-9:17 pm

2 stops44h 17m

Baltimore/Washington

Mon 3/9

6:20 am-9:30 am

2 stops23h 10m

$601

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 3/27

5:00 am-4:50 pm

1 stop15h 50m

Washington, D.C. Dulles Intl

Sun 4/5

10:30 pm-10:30 am

Nonstop7h 00m

$604

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

Delays

Other information

What is the cheapest month to fly to Washington, D.C.?

The month of September is, on average, the cheapest month to fly to Washington, D.C. from Portugal, with most prices found around $524. If you’re not able to fly to Washington, D.C. in September, then February is your next best option. Flight prices from Portugal to Washington, D.C. during February average around $559.

What is the cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Portugal is on a Sunday. momondo users have found tickets for Sunday departures for as low as $658. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Portugal to Washington, D.C. for around $895.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

At noon is the cheapest time of day to fly from Portugal to Washington, D.C. when you can find flight prices for as low as $484. Flying to Washington, D.C. at noon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $808. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Portugal to Washington, D.C. flight route?

Fly from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl for the best Portugal - Washington, D.C. flight prices

What cabin class options are available on Portugal to Washington, D.C. flights?

There are 3 cabin classes available to choose from on Portugal to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 23% on your flight if you consider stops on a Portugal to Washington, D.C. flight.

Cheap Portugal to Washington, D.C. flight deals and tips

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

Best Price Found	$550
Fastest flight time	7h 55m
Direct flights	Mon, Tue, Thu, Fri, Sat and Sun
Airports in Washington, D.C.	2 airports

The best one-way flight to Washington, D.C. from Portugal in the past 72 hours is $550. The best round-trip flight deal from Portugal to Washington, D.C. found on momondo in the last 72 hours is $743.

The fastest flight from Portugal to Washington, D.C. takes 7h 55m

Direct flights go from Portugal to Washington, D.C. on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.

There are 2 airports in Washington, D.C.. From Portugal there are direct flights to Washington, D.C. Dulles Intl (IAD).

Search flight deals

When did momondo last update prices for flights from Portugal to Washington, D.C.?
Prices for flights from Portugal to Washington, D.C. are refreshed on a daily basis.
How many operators does momondo search for flights from Portugal to Washington, D.C.?
As of February 2026, there are 3 operators available to choose from for flights from Portugal to Washington, D.C..
How old do you have to be to fly from Portugal to Washington, D.C.?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portugal to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Portugal to Washington, D.C.?
Based on momondo bookings for flights between Portugal and Washington, D.C., the leading plane model is Boeing 767-300 (winglets), making up 21.92% of the total bookings. Other popular models include Boeing 767-400 with 20.82%, Airbus A321neo with 19.40%, and Boeing 787 Dreamliner with 8.36%.

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

Compare and see reviews for airlines that fly from Portugal to Washington, D.C. with momondo

Airline	Rating	Free Cancellation	Price
TAP AIR PORTUGAL	PriceFrom $492	Free Cancellation	Rating 7.1 2,133 reviews	Search TAP AIR PORTUGAL flights
United Airlines	PriceFrom $497	Free Cancellation	Rating 7.4 9,236 reviews	Search United Airlines flights
British Airways	PriceFrom $500	Free Cancellation	Rating 6.7 7,712 reviews	Search British Airways flights

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Tysons

Laurel

Colonial Beach

Silver Spring

Towson

Fredericksburg

Gaithersburg

Rockville

Manassas

Springfield

Fairfax

Linthicum Heights

Bethesda

Glen Burnie

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portugal to Washington, D.C. for you.

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

Yes. momondo allows you to filter the results for Portugal to Washington, D.C. flights to just show those with flexible booking policies.

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

Once all potential Portugal to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Portugal to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Fly into one of these airports located in Washington, D.C.

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Cheap flights from Portugal to Washington, D.C. from $301

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portugal to Washington, D.C. departing on 3/4. 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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TAP AIR PORTUGAL flights from Portugal to Washington, D.C.

Our best TAP AIR PORTUGAL deals on Portugal to Washington, D.C. flight tickets

SWISS flights from Portugal to Washington, D.C.

Our best SWISS deals on Portugal to Washington, D.C. flight tickets

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

See travel insights to Washington, D.C. from

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

What is the cheapest month to fly to Washington, D.C.?

What is the cheapest day to depart on your flight to Washington, D.C.?

What is the cheapest time of day to depart on your flight to Washington, D.C.?

What is the cheapest Portugal to Washington, D.C. flight route?

Fly from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl for the best Portugal - Washington, D.C. flight prices

What cabin class options are available on Portugal to Washington, D.C. flights?

There are 3 cabin classes available to choose from on Portugal to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 23% on your flight if you consider stops on a Portugal to Washington, D.C. flight.

What is the cheapest airline that flies from Portugal to Washington, D.C.?

Iberia, American Airlines, and British Airways are the most popular carriers operating from Portugal to Washington, D.C.

What airlines fly to Washington, D.C.?

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

Historically, on average around 32% of flights between Portugal and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 135 minutes.

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

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

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

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

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

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 27% of their flights experiencing any sort of delay.

How many flights depart from Portugal to Washington, D.C. on average per week?

The number of flights available between Portugal and Washington, D.C. is 1 per week as of February 2026. The most frequent departure day is Tue, with 100% of weekly flights leaving on this day.

How long does it take to fly to Washington, D.C.?

Cheap Portugal to Washington, D.C. flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Washington, D.C.

When did momondo last update prices for flights from Portugal to Washington, D.C.?

How many operators does momondo search for flights from Portugal to Washington, D.C.?

How old do you have to be to fly from Portugal to Washington, D.C.?

What documentation or ID do you need to fly to Washington, D.C.?

What is the most popular plane model from Portugal to Washington, D.C.?

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

Compare and see reviews for airlines that fly from Portugal to Washington, D.C. with momondo

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

Why use momondo?

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

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

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

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

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Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.

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