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.

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

Iberia is the most popular carrier operating from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl

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

As of February 2026, there are 1 flights per week flying from Lisbon to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Wed, with 100% of flights taking off on this day.

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.

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.

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.

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 February 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.

$337 Cheap Flights from Lisbon to Washington, D.C. Dulles Intl Airport in 2026

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

Prices are currently low for flights on this route. Typical prices usually range from $646 to $794. The lowest price recently found on this route was $576.

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Enter your travel dates to find the best prices.

5:00 am - 5:05 pm

LIS

IAD

16h 05m

1 stop

10:40 pm - 3:10 pm

IAD

LIS

12h 30m

1 stop

$576Multiple Airlines

Thu, Mar 12 - Wed, Mar 18

5:00 am - 5:05 pm

LIS

IAD

16h 05m

1 stop

7:50 pm - 3:10 pm

IAD

LIS

15h 20m

1 stop

$578Multiple Airlines

Thu, Mar 12 - Wed, Mar 18

4:50 pm - 5:05 pm

LIS

IAD

28h 15m

1 stop

9:45 pm - 2:55 pm

IAD

LIS

12h 10m

1 stop

$579Multiple Airlines

Tue, Mar 24 - Tue, Mar 31

5:00 am - 7:19 pm

LIS

IAD

18h 19m

2 stops

7:50 pm - 3:10 pm

IAD

LIS

15h 20m

1 stop

$584Delta

Thu, Mar 12 - Wed, Mar 18

5:00 am - 3:35 pm

LIS

IAD

15h 35m

1 stop

6:15 pm - 11:15 am

IAD

LIS

12h 00m

1 stop

$585Multiple Airlines

Mon, Mar 30 - Mon, Apr 6

5:00 am - 4:05 pm

LIS

IAD

16h 05m

1 stop

7:05 pm - 2:35 pm

IAD

LIS

15h 30m

1 stop

$588KLM

Fri, Mar 6 - Sun, Mar 15

5:00 am - 3:35 pm

LIS

IAD

15h 35m

1 stop

5:07 pm - 5:50 pm

IAD

LIS

19h 43m

2 stops

$589Delta

Tue, Mar 31 - Tue, Apr 14

5:00 am - 7:19 pm

LIS

IAD

18h 19m

2 stops

7:59 pm - 2:35 pm

IAD

LIS

14h 36m

2 stops

$592Delta

Thu, Mar 12 - Wed, Mar 18

7:25 am - 4:05 pm

LIS

IAD

13h 40m

1 stop

10:05 pm - 10:15 pm

IAD

LIS

19h 10m

1 stop

$593Lufthansa

Wed, Apr 1 - Wed, Apr 8

5:00 am - 3:35 pm

LIS

IAD

15h 35m

1 stop

9:45 pm - 5:50 pm

IAD

LIS

15h 05m

1 stop

$596Multiple Airlines

Thu, May 21 - Sat, May 30

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

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

American Airlines

Apr 23

LIS6:35 amLisbon Humberto Delgado

17h 50m

2 stops

IAD7:25 pmWashington, D.C. Dulles Intl

Apr 27

IAD10:25 pmWashington, D.C. Dulles Intl

19h 45m

1 stop

LIS11:10 pmLisbon Humberto Delgado

$624

American Airlines

Apr 23

LIS6:35 amLisbon Humberto Delgado

22h 24m

2 stops

IAD11:59 pmWashington, D.C. Dulles Intl

Apr 27

IAD7:15 pmWashington, D.C. Dulles Intl

22h 55m

1 stop

LIS11:10 pmLisbon Humberto Delgado

$625

American Airlines

Apr 23

LIS6:35 amLisbon Humberto Delgado

17h 50m

2 stops

IAD7:25 pmWashington, D.C. Dulles Intl

Apr 27

IAD10:25 pmWashington, D.C. Dulles Intl

19h 45m

1 stop

LIS11:10 pmLisbon Humberto Delgado

$626

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

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

United Airlines

Mar 12

LIS5:00 amLisbon Humberto Delgado

14h 35m

1 stop

IAD3:35 pmWashington, D.C. Dulles Intl

Mar 18

IAD11:05 pmWashington, D.C. Dulles Intl

7h 10m

LIS10:15 amLisbon Humberto Delgado

$604

United Airlines

Mar 30

LIS7:25 amLisbon Humberto Delgado

13h 40m

1 stop

IAD4:05 pmWashington, D.C. Dulles Intl

Apr 6

IAD10:30 pmWashington, D.C. Dulles Intl

7h 00m

LIS10:30 amLisbon Humberto Delgado

$605

United Airlines

Apr 23

LIS5:05 amLisbon Humberto Delgado

15h 00m

1 stop

IAD3:05 pmWashington, D.C. Dulles Intl

Apr 27

IAD10:20 pmWashington, D.C. Dulles Intl

19h 25m

1 stop

LIS10:45 pmLisbon Humberto Delgado

$607

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.

Fly from

Fly to

Route

Depart

Return

Price

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 3/12

5:00 am-5:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Wed 3/18

10:40 pm-3:10 pm

1 stop12h 30m

$576

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 3/12

5:00 am-5:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Wed 3/18

7:50 pm-3:10 pm

1 stop15h 20m

$578

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 3/24

4:50 pm-5:05 pm

1 stop28h 15m

Washington, D.C. Dulles Intl

Tue 3/31

9:45 pm-2:55 pm

1 stop12h 10m

$579

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 3/12

5:00 am-7:19 pm

2 stops18h 19m

Washington, D.C. Dulles Intl

Wed 3/18

7:50 pm-3:10 pm

1 stop15h 20m

$584

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 3/30

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Mon 4/6

6:15 pm-11:15 am

1 stop12h 00m

$585

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 3/6

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Sun 3/15

7:05 pm-2:35 pm

1 stop15h 30m

$588

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 3/31

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Tue 4/14

5:07 pm-5:50 pm

2 stops19h 43m

$589

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 3/12

5:00 am-7:19 pm

2 stops18h 19m

Washington, D.C. Dulles Intl

Wed 3/18

7:59 pm-2:35 pm

2 stops14h 36m

$592

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 4/1

7:25 am-4:05 pm

1 stop13h 40m

Washington, D.C. Dulles Intl

Wed 4/8

10:05 pm-10:15 pm

1 stop19h 10m

$593

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 5/21

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Sat 5/30

9:45 pm-5:50 pm

1 stop15h 05m

$596

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 $588.

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 $658. 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 $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 Lisbon 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 $812 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

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

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

You could potentially save up to 18% on your flight if you consider stops on a Lisbon to Washington, D.C. Dulles Intl Airport flight.

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

As of February 2026, prices for Lisbon to Washington, D.C. Dulles Intl Airport flights are approximately 20% 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	$556
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 $556. The best round-trip flight deal from Lisbon to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $743.

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

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 February 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 767-300 (winglets) (22.20% of total bookings). The next most popular plane models are Airbus A321neo (20.17%), Boeing 767-400 (14.92%), and Boeing 787 Dreamliner (8.47%).
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 59% of the total bookings. Other popular airlines include United Airlines with 41%.

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 9,322 reviews		Search United Airlines flights
TAP AIR PORTUGAL	PriceFrom $548	Free Cancellation	Rating 7.1 2,144 reviews		Search TAP AIR PORTUGAL flights

TAP AIR PORTUGAL Flights From Lisbon to Washington, D.C. Dulles Intl Airport
TAP AIR PORTUGAL flies from Lisbon to Washington, D.C. Dulles Intl Airport around 1 time per week, with 2,144 momondo users rating the airline 7.1/10. The cheapest TAP AIR PORTUGAL deal from Lisbon to Washington, D.C. Dulles Intl Airport in the last 72 hours was $548 (round-trip), much lower than the average airfare cost of $694 for TAP AIR PORTUGAL flights on this route.

Alexandria

National Harbor

Gettysburg

Arlington

Winchester

Waldorf

Woodbridge

Colonial Beach

Laurel

Silver Spring

Tysons

Towson

Fredericksburg

Gaithersburg

Rockville

Manassas

Springfield

Sterling

Fairfax

Bethesda

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 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.

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

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Cheap flights from Lisbon to Washington, D.C. from $347

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 5/6. 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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American Airlines flights from Lisbon to Washington, D.C. Dulles Intl Airport

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

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

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

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

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?

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

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 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

Best Price Found

Fastest flight time

Direct flights

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

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

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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. 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.

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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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