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

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 Lisbon according to our data. TAP AIR PORTUGAL is the first choice among our users, with 51% 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.

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.

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

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

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 28% of their flights experiencing any sort of delay.

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

As of February 2026, 3 flights take off from Lisbon and land in Washington, D.C. each week. The most common flight departure day for this route is Mon, with 33% of weekly flights taking off on this day.

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

Historically, on average around 33% 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 134 minutes.

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

Prices for flights from Lisbon Humberto Delgado Airport to Washington, D.C. are refreshed on a daily basis.

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

There are 3 operators available for flights from Lisbon Humberto Delgado Airport to Washington, D.C. as of February 2026.

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

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..

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

The necessary travel and health documents for your Washington, D.C. 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.

$331 Cheap Flights from Lisbon to Washington, D.C. in 2026

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5:15 pm - 9:00 pm

LIS

IAD

8h 45mnonstop

11:30 pm - 10:35 am

IAD

LIS

7h 05mnonstop

$575TAP AIR PORTUGAL

Fri, Feb 27 - Sun, Mar 8

5:00 am - 5:05 pm

LIS

IAD

16h 05m

1 stop

7:50 pm - 3:10 pm

IAD

LIS

15h 20m

1 stop

$576Multiple Airlines

Mon, Mar 9 - Mon, Mar 16

5:00 am - 3:35 pm

LIS

IAD

15h 35m

1 stop

9:45 pm - 10:25 pm

IAD

LIS

19h 40m

1 stop

$577Multiple Airlines

Mon, May 11 - Tue, May 26

5:35 am - 7:35 pm

LIS

IAD

19h 00m

1 stop

9:45 pm - 10:25 pm

IAD

LIS

19h 40m

1 stop

$579Air France

Tue, May 12 - Tue, May 26

5:35 am - 7:35 pm

LIS

IAD

19h 00m

1 stop

7:33 pm - 5:50 pm

IAD

LIS

17h 17m

2 stops

$583Delta

Tue, May 12 - Wed, May 27

5:00 am - 7:55 pm

LIS

DCA

18h 55m

2 stops

12:16 pm - 8:50 am

DCA

LIS

15h 34m

2 stops

$585Delta

Wed, Mar 18 - Sun, Mar 29

5:00 am - 5:05 pm

LIS

IAD

16h 05m

1 stop

7:05 pm - 2:35 pm

IAD

LIS

15h 30m

1 stop

$585KLM

Tue, Mar 17 - Sun, Mar 22

5:00 am - 4:05 pm

LIS

IAD

16h 05m

1 stop

7:05 pm - 10:35 am

IAD

LIS

11h 30m

1 stop

$586KLM

Fri, Feb 27 - Sun, Mar 8

5:00 am - 9:35 pm

LIS

DCA

20h 35m

2 stops

6:00 pm - 8:10 am

DCA

LIS

10h 10m

1 stop

$609United Airlines

Mon, Mar 9 - Mon, Mar 16

5:05 am - 5:25 pm

LIS

DCA

17h 20m

2 stops

6:00 pm - 8:20 am

DCA

LIS

9h 20m

1 stop

$612United Airlines

Wed, Apr 22 - Sun, Apr 26

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

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

TAP AIR PORTUGAL

Feb 27

LIS5:15 pmLisbon Humberto Delgado

8h 45m

IAD9:00 pmWashington, D.C. Dulles Intl

Mar 8

IAD11:30 pmWashington, D.C. Dulles Intl

7h 05m

LIS10:35 amLisbon Humberto Delgado

$575

TAP AIR PORTUGAL

Feb 27

LIS5:15 pmLisbon Humberto Delgado

8h 45m

IAD9:00 pmWashington, D.C. Dulles Intl

Mar 8

IAD11:30 pmWashington, D.C. Dulles Intl

7h 05m

LIS10:35 amLisbon Humberto Delgado

$578

TAP AIR PORTUGAL

Feb 27

LIS5:15 pmLisbon Humberto Delgado

8h 45m

IAD9:00 pmWashington, D.C. Dulles Intl

Mar 8

IAD11:30 pmWashington, D.C. Dulles Intl

7h 05m

LIS10:35 amLisbon Humberto Delgado

$582

American Airlines flights from Lisbon to Washington, D.C.

Our best American Airlines deals on Lisbon to Washington, D.C. flight tickets

American Airlines

May 10

LIS6:35 amLisbon Humberto Delgado

13h 55m

1 stop

IAD3:30 pmWashington, D.C. Dulles Intl

May 26

IAD7:15 pmWashington, D.C. Dulles Intl

22h 45m

1 stop

LIS11:00 pmLisbon Humberto Delgado

$622

American Airlines

Apr 23

LIS6:35 amLisbon Humberto Delgado

22h 24m

2 stops

IAD11:59 pmWashington, D.C. Dulles Intl

Apr 27

IAD10:25 pmWashington, D.C. Dulles Intl

19h 45m

1 stop

LIS11:10 pmLisbon Humberto Delgado

$625

American Airlines

May 11

LIS6:35 amLisbon Humberto Delgado

22h 24m

2 stops

IAD11:59 pmWashington, D.C. Dulles Intl

May 25

IAD10:25 pmWashington, D.C. Dulles Intl

19h 45m

1 stop

LIS11:10 pmLisbon Humberto Delgado

$627

Fly from

Fly to

Route

Depart

Return

Price

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 2/27

5:15 pm-9:00 pm

Nonstop8h 45m

Washington, D.C. Dulles Intl

Sun 3/8

11:30 pm-10:35 am

Nonstop7h 05m

$575

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 3/9

5:00 am-5:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Mon 3/16

7:50 pm-3:10 pm

1 stop15h 20m

$576

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 5/11

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Tue 5/26

9:45 pm-10:25 pm

1 stop19h 40m

$577

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 5/12

5:35 am-7:35 pm

1 stop19h 00m

Washington, D.C. Dulles Intl

Tue 5/26

9:45 pm-10:25 pm

1 stop19h 40m

$579

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 5/12

5:35 am-7:35 pm

1 stop19h 00m

Washington, D.C. Dulles Intl

Wed 5/27

7:33 pm-5:50 pm

2 stops17h 17m

$583

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Wed 3/18

5:00 am-7:55 pm

2 stops18h 55m

Washington, D.C. Reagan-National

Sun 3/29

12:16 pm-8:50 am

2 stops15h 34m

$585

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 3/17

5:00 am-5:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Sun 3/22

7:05 pm-2:35 pm

1 stop15h 30m

$585

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 2/27

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Sun 3/8

7:05 pm-10:35 am

1 stop11h 30m

$586

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Mon 3/9

5:00 am-9:35 pm

2 stops20h 35m

Washington, D.C. Reagan-National

Mon 3/16

6:00 pm-8:10 am

1 stop10h 10m

$609

LisbonWashington, D.C.

LIS - DCA

LISDCA

Lisbon Humberto Delgado

Wed 4/22

5:05 am-5:25 pm

2 stops17h 20m

Washington, D.C. Reagan-National

Sun 4/26

6:00 pm-8:20 am

1 stop9h 20m

$612

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How to get the cheapest flight ticket from Lisbon 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 Lisbon, with most prices found around $524. If you’re not able to fly to Washington, D.C. in September, then January is your next best option. Flight prices from Lisbon to Washington, D.C. during January average around $602.

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 Lisbon 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 Lisbon to Washington, D.C. for around $899.

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 Lisbon 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 $814. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

What cabin class options are available on Lisbon Humberto Delgado to Washington, D.C. flights?

There are 3 cabin classes available to choose from on Lisbon Humberto Delgado 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 Lisbon to Washington, D.C. flights?

You could potentially save up to 20% on your flight if you consider stops on a Lisbon to Washington, D.C. flight.

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

As of February 2026, prices for Lisbon to Washington, D.C. flights are approximately 131% more expensive when compared to flights at the same time last year.

When to book flights from Lisbon to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from Lisbon to Washington, D.C. 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. (LIS to WAS) flight deals and tips

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

Best Price Found	$550
Fastest flight time	8h 05m
Direct flights	Every day
Airports in Washington, D.C.	2 airports

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

The fastest flight from Lisbon to Washington, D.C. takes 8h 05m

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

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

Search flight deals

How far is Lisbon Humberto Delgado to Washington, D.C. by plane?
There are 3562.1 mi between Lisbon Humberto Delgado and Washington, D.C.. Typically, this will take 8h 05m by plane in normal conditions.
When did momondo last update prices for flights from Lisbon Humberto Delgado Airport to Washington, D.C.?
Prices for flights from Lisbon Humberto Delgado Airport to Washington, D.C. are refreshed on a daily basis.
How many operators does momondo search for flights from Lisbon Humberto Delgado Airport to Washington, D.C.?
There are 3 operators available for flights from Lisbon Humberto Delgado Airport to Washington, D.C. as of February 2026.
How old do you have to be to fly from Lisbon Humberto Delgado Airport to Washington, D.C.?
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..
What documentation or ID do you need to fly to Washington, D.C.?
The necessary travel and health documents for your Washington, D.C. 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.?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Lisbon to Washington, D.C. is Boeing 767-300 (winglets) (22.31% of total bookings). The next most popular plane models are Airbus A321neo (20.22%), Boeing 767-400 (16.37%), and Boeing 787 Dreamliner (8.51%).
What is the most popular airline from Lisbon to Washington, D.C.?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Lisbon to Washington, D.C. is TAP AIR PORTUGAL (74% of total bookings). The next most popular airline is United Airlines (26%).

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

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $497	Free Cancellation	Rating 7.4 9,279 reviews	Search United Airlines flights
British Airways	PriceFrom $500	Free Cancellation	Rating 6.7 7,731 reviews	Search British Airways flights
TAP AIR PORTUGAL	PriceFrom $561	Free Cancellation	Rating 7.1 2,139 reviews	Search TAP AIR PORTUGAL flights

TAP AIR PORTUGAL Flights From Lisbon to Washington, D.C.
TAP AIR PORTUGAL is one of the most popular airlines flying from Lisbon to Washington, D.C., operating 3 flights/week on average for this route. A good TAP AIR PORTUGAL flight deal for Lisbon to Washington, D.C. starts from $561 round-trip, up to an average price of $720. Our users have rated TAP AIR PORTUGAL at 7.1/10.

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Colonial Beach

Tysons

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Lisbon to Washington, D.C..

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

If you are simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from Lisbon and alert you when they change.

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

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Cheap flights from Lisbon to Washington, D.C. from $331

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 4/20. 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 Lisbon to Washington, D.C.

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

American Airlines flights from Lisbon to Washington, D.C.

Our best American Airlines deals on Lisbon to Washington, D.C. flight tickets

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How to get the cheapest flight ticket from Lisbon 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 Lisbon Humberto Delgado to Washington, D.C. flight route?

What cabin class options are available on Lisbon Humberto Delgado to Washington, D.C. flights?

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

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

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

What airlines fly to Washington, D.C.?

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. on average per week?

When to book flights from Lisbon to Washington, D.C.

Cheap Lisbon to Washington, D.C. (LIS to WAS) flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Washington, D.C.

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

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

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

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

Why use momondo?

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

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

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

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

An easier way to manage your Washington, D.C. 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 the United States

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.

Fly your favorite airline to Washington, D.C.

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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