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

As of May 2026, there are 6 flights per day flying from Lisbon to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 12:00PM, with 76% of flights taking off in the afternoon.

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

Monday 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.

What is the most punctual flight time for Lisbon 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.

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

As of May 2026, there are 45 flights per week flying from Lisbon to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Tue, with 18% of flights taking off on this day.

Which airline has the best punctuality record on Lisbon 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 often are flights from Lisbon to Washington, D.C. delayed?

Historically, on average around 31% of flights between Lisbon and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 131 minutes.

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

British Airways, Finnair, and WestJet are the most popular carriers operating from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl

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

Prices for flights from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport are updated daily.

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

As of May 2026, there are 2 operators available to choose from for flights from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lisbon Humberto Delgado Airport 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.

$496 Cheap Flights from Lisbon to Washington, D.C. Dulles Intl Airport in 2026

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12:20 pm - 3:15 pm

LIS

IAD

7h 55mnonstop

10:25 pm - 10:30 am

IAD

LIS

7h 05mnonstop

$624United Airlines

Tue, Jun 2 - Tue, Jun 9

10:25 am - 4:22 pm

LIS

IAD

10h 57m

1 stop

11:05 pm - 10:15 am

IAD

LIS

7h 10mnonstop

$629United Airlines

Fri, Oct 16 - Sun, Oct 25

7:55 pm - 1:30 pm

LIS

IAD

22h 35m

1 stop

5:35 pm - 11:10 am

IAD

LIS

12h 35m

1 stop

$634Brussels Airlines

Fri, Jun 5 - Mon, Jun 8

12:20 pm - 3:15 pm

LIS

IAD

7h 55mnonstop

5:42 pm - 8:20 am

IAD

LIS

9h 38m

1 stop

$644United Airlines

Tue, Jun 2 - Tue, Jun 9

12:35 pm - 6:45 pm

LIS

IAD

11h 10m

1 stop

8:45 pm - 4:55 pm

IAD

LIS

15h 10m

1 stop

$653Royal Air Maroc

Wed, Nov 11 - Wed, Nov 25

7:55 pm - 2:15 pm

LIS

IAD

23h 20m

2 stops

5:35 pm - 11:10 am

IAD

LIS

12h 35m

1 stop

$669Brussels Airlines

Fri, Jun 5 - Mon, Jun 8

5:55 pm - 6:45 pm

LIS

IAD

29h 50m

1 stop

8:45 pm - 11:35 am

IAD

LIS

9h 50m

1 stop

$678Royal Air Maroc

Tue, Nov 10 - Wed, Nov 25

5:00 am - 4:50 pm

LIS

IAD

15h 50m

1 stop

6:00 pm - 11:35 am

IAD

LIS

12h 35m

1 stop

$681Lufthansa

Wed, Oct 28 - Thu, Nov 5

5:00 am - 4:22 pm

LIS

IAD

16h 22m

2 stops

1:20 pm - 11:00 am

IAD

LIS

16h 40m

2 stops

$682Air Canada

Wed, Nov 11 - Wed, Nov 25

5:05 am - 4:05 pm

LIS

IAD

16h 00m

1 stop

7:00 pm - 2:50 pm

IAD

LIS

15h 50m

1 stop

$688Lufthansa

Fri, Oct 16 - Sun, Oct 25

Lufthansa flights from Lisbon to Washington, D.C. Dulles Intl Airport

Our best Lufthansa deals on Lisbon to Washington, D.C. Dulles Intl Airport flight tickets

Lufthansa

Oct 28

LIS5:00 amLisbon Humberto Delgado

15h 50m

1 stop

IAD4:50 pmWashington, D.C. Dulles Intl

Nov 5

IAD6:00 pmWashington, D.C. Dulles Intl

12h 35m

1 stop

LIS11:35 amLisbon Humberto Delgado

$681

Lufthansa

Oct 16

LIS5:05 amLisbon Humberto Delgado

16h 00m

1 stop

IAD4:05 pmWashington, D.C. Dulles Intl

Oct 25

IAD7:00 pmWashington, D.C. Dulles Intl

15h 50m

1 stop

LIS2:50 pmLisbon Humberto Delgado

$688

Lufthansa

Nov 11

LIS5:00 amLisbon Humberto Delgado

15h 50m

1 stop

IAD3:50 pmWashington, D.C. Dulles Intl

Nov 25

IAD10:05 pmWashington, D.C. Dulles Intl

7h 10m

LIS10:15 amLisbon Humberto Delgado

$693

SWISS flights from Lisbon to Washington, D.C. Dulles Intl Airport

Our best SWISS deals on Lisbon to Washington, D.C. Dulles Intl Airport flight tickets

SWISS

Jun 2

LIS6:25 pmLisbon Humberto Delgado

27h 20m

1 stop

IAD4:45 pmWashington, D.C. Dulles Intl

Jun 10

IAD8:20 pmWashington, D.C. Dulles Intl

22h 05m

1 stop

LIS11:25 pmLisbon Humberto Delgado

$720

SWISS

Jun 1

LIS3:50 pmLisbon Humberto Delgado

29h 55m

1 stop

IAD4:45 pmWashington, D.C. Dulles Intl

Jun 15

IAD8:20 pmWashington, D.C. Dulles Intl

16h 05m

1 stop

LIS5:25 pmLisbon Humberto Delgado

$732

SWISS

Jun 11

LIS5:55 amLisbon Humberto Delgado

14h 35m

1 stop

IAD3:30 pmWashington, D.C. Dulles Intl

Jun 14

IAD5:40 pmWashington, D.C. Dulles Intl

15h 05m

2 stops

LIS1:45 pmLisbon Humberto Delgado

$742

momondo Fare Finder

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

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Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 6/2

12:20 pm-3:15 pm

Nonstop7h 55m

Washington, D.C. Dulles Intl

Tue 6/9

10:25 pm-10:30 am

Nonstop7h 05m

$624

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 10/16

10:25 am-4:22 pm

1 stop10h 57m

Washington, D.C. Dulles Intl

Sun 10/25

11:05 pm-10:15 am

Nonstop7h 10m

$629

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 6/5

7:55 pm-1:30 pm

1 stop22h 35m

Washington, D.C. Dulles Intl

Mon 6/8

5:35 pm-11:10 am

1 stop12h 35m

$634

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 6/2

12:20 pm-3:15 pm

Nonstop7h 55m

Washington, D.C. Dulles Intl

Tue 6/9

5:42 pm-8:20 am

1 stop9h 38m

$644

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 11/11

12:35 pm-6:45 pm

1 stop11h 10m

Washington, D.C. Dulles Intl

Wed 11/25

8:45 pm-4:55 pm

1 stop15h 10m

$653

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 6/5

7:55 pm-2:15 pm

2 stops23h 20m

Washington, D.C. Dulles Intl

Mon 6/8

5:35 pm-11:10 am

1 stop12h 35m

$669

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 11/10

5:55 pm-6:45 pm

1 stop29h 50m

Washington, D.C. Dulles Intl

Wed 11/25

8:45 pm-11:35 am

1 stop9h 50m

$678

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 10/28

5:00 am-4:50 pm

1 stop15h 50m

Washington, D.C. Dulles Intl

Thu 11/5

6:00 pm-11:35 am

1 stop12h 35m

$681

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 11/11

5:00 am-4:22 pm

2 stops16h 22m

Washington, D.C. Dulles Intl

Wed 11/25

1:20 pm-11:00 am

2 stops16h 40m

$682

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 10/16

5:05 am-4:05 pm

1 stop16h 00m

Washington, D.C. Dulles Intl

Sun 10/25

7:00 pm-2:50 pm

1 stop15h 50m

$688

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 Lisbon 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 typical price of a round-trip flight between Lisbon and Washington, D.C. Dulles Intl Airport?

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

In general, January is the cheapest month to fly from Lisbon 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 $544. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of January, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $577.

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

Our data shows that Wednesday 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 $799. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Lisbon to Washington, D.C. Dulles Intl Airport for around $1,070.

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 Lisbon in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $679 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $938 on average. Flights to Washington, D.C. Dulles Intl Airport from Lisbon in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Lisbon Humberto Delgado to Washington, D.C. Dulles Intl flight route?

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

Can stopping save me money on Lisbon to Washington, D.C. Dulles Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Lisbon to Washington, D.C. Dulles Intl Airport.

How have Lisbon to Washington, D.C. Dulles Intl Airport flight prices changed over time?

As of May 2026, prices for Lisbon to Washington, D.C. Dulles Intl Airport flights are approximately 4% more expensive when compared to flights at the same time last year.

When to book flights from Lisbon to Washington, D.C. Dulles Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Lisbon to Washington, D.C. Dulles Intl Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Lisbon to Washington, D.C. Dulles Intl Airport (LIS to IAD) flight deals and tips

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

Best Price Found	$645
Fastest flight time	7h 55m
Direct flights	Every day

The best one-way flight to Washington, D.C. Dulles Intl Airport from Lisbon in the past 72 hours is $645. The best round-trip flight deal from Lisbon to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $982.

The fastest flight from Lisbon to Washington, D.C. Dulles Intl Airport takes 7h 55m

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

Search flight deals

Frequently asked questions about flying from Lisbon to Washington, D.C. Dulles Intl Airport

How far is Lisbon Humberto Delgado to Washington, D.C. Dulles Intl by plane?
A flight from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl will travel around 3581.5 mi. A reasonable flight in good conditions will take 7h 55m.
When did momondo last update prices for flights from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport are updated daily.
How many operators does momondo search for flights from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport?
As of May 2026, there are 2 operators available to choose from for flights from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport.
How old do you have to be to fly from Lisbon Humberto Delgado Airport to Washington, D.C. Dulles Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lisbon Humberto Delgado Airport 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 Lisbon to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Lisbon to Washington, D.C. Dulles Intl Airport is Boeing 777 (36.55% of total bookings). The next most popular plane models are Airbus A321neo (27.71%), Airbus A321-100/200 (8.84%), and Boeing 767-300 (winglets) (5.02%).
What is the most popular airline from Lisbon to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between Lisbon and Washington, D.C. Dulles Intl Airport, the leading airline is TAP AIR PORTUGAL, making up 61% of the total bookings. Other popular airlines include United Airlines with 39%.

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

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $497	Free Cancellation	Rating 7.4 9,733 reviews		Search United Airlines flights
TAP AIR PORTUGAL	PriceFrom $561	Free Cancellation	Rating 7.2 2,254 reviews		Search TAP AIR PORTUGAL flights

United Airlines Flights From Lisbon to Washington, D.C. Dulles Intl Airport
United Airlines flies from Lisbon to Washington, D.C. Dulles Intl Airport around 3 times per week, with 9,733 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Lisbon to Washington, D.C. Dulles Intl Airport in the last 72 hours was $497 (round-trip), much lower than the average airfare cost of $802 for United Airlines flights on this route.
TAP AIR PORTUGAL Flights From Lisbon to Washington, D.C. Dulles Intl Airport
Across 2,254 TAP AIR PORTUGAL reviews on momondo, the average score is 7.2/10. TAP AIR PORTUGAL flies from Lisbon to Washington, D.C. Dulles Intl Airport about 8 times each week, with ticket deals ranging from $561 to $705. Price data is based on momondo searches in the last 72 hours.

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Gaithersburg

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Linthicum Heights

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Bethesda

Springfield

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

Finding the right flight to Washington, D.C. from Lisbon is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Lisbon with this policy.

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

Once all potential Lisbon 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 Lisbon 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 Lisbon. 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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Cheap flights from Lisbon to Washington, D.C. from $507

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Lisbon to Washington, D.C. departing on 5/25. 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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Lufthansa flights from Lisbon to Washington, D.C. Dulles Intl Airport

Our best Lufthansa deals on Lisbon to Washington, D.C. Dulles Intl Airport flight tickets

SWISS flights from Lisbon to Washington, D.C. Dulles Intl Airport

Our best SWISS deals on Lisbon to Washington, D.C. Dulles Intl Airport flight tickets

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See travel insights to Washington, D.C. from

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

What is the typical price of a round-trip flight between Lisbon and 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 Lisbon Humberto Delgado to Washington, D.C. Dulles Intl flight route?

Can stopping save me money on Lisbon to Washington, D.C. Dulles Intl Airport flights?

How have Lisbon to Washington, D.C. Dulles Intl Airport flight prices changed over time?

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

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

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

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

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

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

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

When to book flights from Lisbon to Washington, D.C. Dulles Intl Airport

Cheap Lisbon to Washington, D.C. Dulles Intl Airport (LIS to IAD) flight deals and tips

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

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Direct flights

Frequently asked questions about flying from Lisbon to Washington, D.C. Dulles Intl Airport

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

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

United Airlines Flights From Lisbon to Washington, D.C. Dulles Intl Airport

TAP AIR PORTUGAL Flights From Lisbon to Washington, D.C. Dulles Intl Airport

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