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 26% of their flights experiencing any sort of delay.

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. Sunday has historically seen more delays on average compared to the rest of the week.

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

Flight times from Portugal to Washington, D.C. Dulles Intl Airport 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 8h 15m on average. Another popular route from Portugal to Washington, D.C. Dulles Intl Airport is flying from Porto to Washington, D.C. Dulles Intl Airport, which will take roughly 12h 40m. Keep in mind that layovers or delays could extend your travel time.

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

Historically, on average around 30% 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 cheapest airline that flies from Portugal to Washington, D.C. Dulles Intl?

Iberia, Royal Air Maroc, and TAP AIR PORTUGAL are the most popular carriers operating from Portugal to Washington, D.C. Dulles Intl

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. Dulles Intl Airport?

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

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

There are 2 operators available for flights from Portugal to Washington, D.C. Dulles Intl Airport as of December 2025.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portugal to Washington, D.C. Dulles Intl Airport.

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

The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$337 Cheap Flights from Portugal to Washington, D.C. Dulles Intl Airport in 2025/26

Q: How many flights depart from Portugal to Washington, D.C. Dulles Intl Airport on average per day?

As of December 2025, 3 flights take off from Portugal and land in Washington, D.C. Dulles Intl Airport each day. The most common flight departure time for this route is 11:00AM, with 92% of daily flights taking off at noon.

Q: How many flights depart from Portugal to Washington, D.C. Dulles Intl Airport on average per week?

As of December 2025, there are 26 flights per week flying from Portugal to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

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

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6:00 pm - 9:00 pm

OPO

IAD

32h 00m1 stop

10:30 pm - 9:55 am

IAD

OPO

30h 25m1 stop

$513TAP AIR PORTUGAL

Thu, Jan 15 - Wed, Jan 28

12:25 pm - 6:45 pm

LIS

IAD

11h 20m1 stop

8:45 pm - 4:55 pm

IAD

LIS

15h 10m1 stop

$539Royal Air Maroc

Sun, Jan 25 - Sun, Feb 1

10:45 am - 3:35 pm

LIS

IAD

8h 50mnonstop

5:05 pm - 5:30 am

IAD

LIS

7h 25mnonstop

$572TAP AIR PORTUGAL

Tue, Mar 17 - Tue, Apr 7

5:00 am - 2:35 pm

LIS

IAD

14h 35m1 stop

5:40 pm - 1:20 pm

IAD

LIS

14h 40m1 stop

$580Lufthansa

Thu, Jan 15 - Wed, Jan 28

5:10 pm - 9:00 pm

LIS

IAD

8h 50mnonstop

10:30 pm - 10:35 am

IAD

LIS

7h 05mnonstop

$586TAP AIR PORTUGAL

Sun, Jan 25 - Sun, Feb 1

5:00 am - 3:50 pm

LIS

IAD

15h 50m1 stop

6:00 pm - 11:35 am

IAD

LIS

12h 35m1 stop

$590Lufthansa

Thu, Jan 15 - Wed, Jan 28

6:00 am - 3:50 pm

OPO

IAD

14h 50m1 stop

5:15 pm - 11:40 am

IAD

OPO

13h 25m1 stop

$591United Airlines

Thu, Jan 15 - Wed, Jan 28

7:15 am - 4:50 pm

LIS

IAD

14h 35m1 stop

8:20 pm - 3:35 pm

IAD

LIS

14h 15m1 stop

$592Multiple Airlines

Mon, May 4 - Fri, May 8

5:00 am - 8:15 pm

LIS

IAD

20h 15m1 stop

5:38 pm - 8:10 am

IAD

LIS

9h 32m1 stop

$594United Airlines

Thu, Jan 15 - Wed, Jan 28

6:35 am - 4:05 pm

OPO

IAD

14h 30m1 stop

12:23 pm - 10:30 am

IAD

OPO

17h 07m2 stops

$620Delta

Thu, Jan 15 - Wed, Jan 28

United Airlines flights from Portugal to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Portugal to Washington, D.C. Dulles Intl Airport flight tickets

United Airlines

Jan 15

OPO6:00 amPorto

14h 50m

1 stop

IAD3:50 pmWashington, D.C. Dulles Intl

Jan 28

IAD5:15 pmWashington, D.C. Dulles Intl

13h 25m

1 stop

OPO11:40 amPorto

$591

Find similar

United Airlines

Jan 15

LIS5:00 amLisbon Humberto Delgado

20h 15m

1 stop

IAD8:15 pmWashington, D.C. Dulles Intl

Jan 28

IAD5:38 pmWashington, D.C. Dulles Intl

9h 32m

1 stop

LIS8:10 amLisbon Humberto Delgado

$594

Find similar

United Airlines

Mar 17

LIS5:00 amLisbon Humberto Delgado

15h 50m

1 stop

IAD4:50 pmWashington, D.C. Dulles Intl

Apr 7

IAD1:05 pmWashington, D.C. Dulles Intl

15h 15m

2 stops

LIS9:20 amLisbon Humberto Delgado

$597

Find similar

Air Canada flights from Portugal to Washington, D.C. Dulles Intl Airport

Our best Air Canada deals on Portugal to Washington, D.C. Dulles Intl Airport flight tickets

Air Canada

Dec 25

LIS10:55 amLisbon Humberto Delgado

15h 30m

2 stops

IAD9:25 pmWashington, D.C. Dulles Intl

Jan 11

IAD5:16 pmWashington, D.C. Dulles Intl

11h 04m

1 stop

LIS9:20 amLisbon Humberto Delgado

$631

Find similar

Air Canada

Dec 26

LIS11:20 amLisbon Humberto Delgado

15h 05m

2 stops

IAD9:25 pmWashington, D.C. Dulles Intl

Jan 11

IAD9:00 amWashington, D.C. Dulles Intl

19h 20m

1 stop

LIS9:20 amLisbon Humberto Delgado

$634

Find similar

Air Canada

Dec 18

LIS10:55 amLisbon Humberto Delgado

15h 04m

1 stop

IAD8:59 pmWashington, D.C. Dulles Intl

Jan 8

IAD9:45 amWashington, D.C. Dulles Intl

18h 35m

1 stop

LIS9:20 amLisbon Humberto Delgado

$651

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 1/15

6:00 pm-9:00 pm

1 stop32h 00m

Washington, D.C. Dulles Intl

Wed 1/28

10:30 pm-9:55 am

1 stop30h 25m

$513

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sun 1/25

12:25 pm-6:45 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Sun 2/1

8:45 pm-4:55 pm

1 stop15h 10m

$539

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 3/17

10:45 am-3:35 pm

Nonstop8h 50m

Washington, D.C. Dulles Intl

Tue 4/7

5:05 pm-5:30 am

Nonstop7h 25m

$572

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/15

5:00 am-2:35 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

Wed 1/28

5:40 pm-1:20 pm

1 stop14h 40m

$580

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sun 1/25

5:10 pm-9:00 pm

Nonstop8h 50m

Washington, D.C. Dulles Intl

Sun 2/1

10:30 pm-10:35 am

Nonstop7h 05m

$586

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/15

5:00 am-3:50 pm

1 stop15h 50m

Washington, D.C. Dulles Intl

Wed 1/28

6:00 pm-11:35 am

1 stop12h 35m

$590

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 1/15

6:00 am-3:50 pm

1 stop14h 50m

Washington, D.C. Dulles Intl

Wed 1/28

5:15 pm-11:40 am

1 stop13h 25m

$591

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 5/4

7:15 am-4:50 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

Fri 5/8

8:20 pm-3:35 pm

1 stop14h 15m

$592

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/15

5:00 am-8:15 pm

1 stop20h 15m

Washington, D.C. Dulles Intl

Wed 1/28

5:38 pm-8:10 am

1 stop9h 32m

$594

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Thu 1/15

6:35 am-4:05 pm

1 stop14h 30m

Washington, D.C. Dulles Intl

Wed 1/28

12:23 pm-10:30 am

2 stops17h 07m

$620

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. Dulles Intl Airport

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. Dulles Intl Airport?

In general, December is the cheapest month to fly from Portugal to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $635. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of December, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $636.

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

Our data shows that Sunday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $681. 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. Dulles Intl Airport for around $899.

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

Flying to Washington, D.C. Dulles Intl Airport from Portugal at noon is the least expensive time of day to depart. momondo users have found prices as low as $484 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $814 on average. Flights to Washington, D.C. Dulles Intl Airport from Portugal in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

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

There are 3 cabin classes available to choose from on Portugal to Washington, D.C. Dulles Intl 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. Dulles Intl Airport flights?

You could potentially save up to 22% on your flight if you consider stops on a Portugal to Washington, D.C. Dulles Intl Airport flight.

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

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

Best Price Found	$607
Fastest flight time	8h 15m
Direct flights	Every day

The best one-way flight to Washington, D.C. Dulles Intl Airport from Portugal in the past 72 hours is $607. The best round-trip flight deal from Portugal to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $713.

The fastest flight from Portugal to Washington, D.C. Dulles Intl Airport takes 8h 15m

Direct flights go from Portugal to Washington, D.C. Dulles Intl Airport every day.

Search flight deals

When did momondo last update prices for flights from Portugal to Washington, D.C. Dulles Intl Airport?
Prices for flights from Portugal to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Portugal to Washington, D.C. Dulles Intl Airport?
There are 2 operators available for flights from Portugal to Washington, D.C. Dulles Intl Airport as of December 2025.
How old do you have to be to fly from Portugal to Washington, D.C. Dulles Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portugal to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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. Dulles Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from Portugal to Washington, D.C. Dulles Intl Airport is Boeing 767-400, representing 34.14% of all bookings. The subsequent popular models are Airbus A321neo at 22.36%, Boeing 767-300 (winglets) at 12.82%, and Airbus A330-900neo at 5.89%.

Best airlines flying from Portugal to Washington, D.C. Dulles Intl Airport

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

Airline	Rating	Free Cancellation	Price
TAP AIR PORTUGAL	PriceFrom $492	Free Cancellation	Rating 7.1 2,089 reviews		Search TAP AIR PORTUGAL flights
United Airlines	PriceFrom $573	Free Cancellation	Rating 7.4 9,095 reviews		Search United Airlines flights

Alexandria

National Harbor

Gettysburg

Arlington

Winchester

Woodbridge

Waldorf

Tysons

Laurel

Colonial Beach

Silver Spring

Fredericksburg

Towson

Harpers Ferry

Rockville

Gaithersburg

Reston

Manassas

Sterling

Fairfax

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momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portugal to Washington, D.C.. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Washington, D.C. from Portugal on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Portugal.

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 offers price alerts on flights to Washington, D.C. from Portugal. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Washington, D.C. Dulles Intl Airport flight routes

Flights from San Francisco to Washington, D.C. Dulles Intl

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Cheap flights from Portugal to Washington, D.C. from $365

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 2/21. 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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United Airlines flights from Portugal to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on Portugal to Washington, D.C. Dulles Intl Airport flight tickets

Air Canada flights from Portugal to Washington, D.C. Dulles Intl Airport

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

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

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

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

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

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

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

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

There are 3 cabin classes available to choose from on Portugal to Washington, D.C. Dulles Intl 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. Dulles Intl Airport flights?

You could potentially save up to 22% on your flight if you consider stops on a Portugal to Washington, D.C. Dulles Intl Airport flight.

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

Iberia, Royal Air Maroc, and TAP AIR PORTUGAL are the most popular carriers operating from Portugal to Washington, D.C. Dulles Intl

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

Historically, on average around 30% 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. Sunday 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 26% of their flights experiencing any sort of delay.

How many flights depart from Portugal to Washington, D.C. Dulles Intl Airport on average per day?

As of December 2025, 3 flights take off from Portugal and land in Washington, D.C. Dulles Intl Airport each day. The most common flight departure time for this route is 11:00AM, with 92% of daily flights taking off at noon.

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

As of December 2025, there are 26 flights per week flying from Portugal to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

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

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

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

Best Price Found

Fastest flight time

Direct flights

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

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

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

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

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

Best airlines flying from Portugal to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Portugal to Washington, D.C. Dulles Intl Airport 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?

An easier way to manage your Washington, D.C. Dulles Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Washington, D.C.

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