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Cheap flights from Lisbon to Washington, D.C. Dulles Intl Airport from £336

LIS — IAD
3 Dec — 10 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Lisbon to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Lisbon to Dulles Intl

Fri 13/1105:00 -
1 stop15h 55m
Sun 22/1118:40 -
1 stop15h 30m
Deal found 29/10£518
Thu 26/1105:00 -
1 stop15h 55m
Tue 19/118:40 -
1 stop11h 45m
Deal found 2/11£519
Tue 24/1105:00 -
1 stop15h 45m
Tue 1/1218:20 -
2 stops15h 50m
Deal found 2/11£520
Thu 19/1105:00 -
1 stop15h 55m
Sat 28/1118:40 -
1 stop17h 50m
Deal found 30/10£521
Thu 26/1105:00 -
1 stop15h 55m
Wed 2/1212:35 -
2 stops17h 45m
Deal found 3/11£521
Tue 24/1105:00 -
1 stop15h 45m
Tue 15/1212:35 -
1 stop14h 25m
Deal found 3/11£524
Tue 24/1105:00 -
2 stops17h 28m
Wed 20/118:40 -
1 stop11h 40m
Deal found 2/11£527
Thu 26/1105:00 -
1 stop15h 55m
Tue 19/118:15 -
2 stops15h 25m
Deal found 2/11£529

Find flight deals from Lisbon to Dulles Intl

Round-trip from

£518

One-way from

£336

Popular in

July

Cheapest in

March

Average price

£553

Good one-way deal

£673 or less
Air France
  • Air France
  • 13/11-22/11
  • 2 total stops
  • 31h 25m total
  • Lisbon to Washington, D.C.
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Finnair
  • Finnair
  • 1/3-31/12
  • 1 total stop
  • 14h 50m total
  • Lisbon to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£59 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
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Average for round-trip flights in November 2026
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Price to beat on a one-way flight from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl.
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Cheapflights 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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Price

Cheapest return flight

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Sun 25/4

06:35-15:30

1 stop13h 55m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£336

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Wed 6/1

18:35-15:40

1 stop26h 05m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£365

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Tue 24/11

10:50-14:40

Nonstop8h 50m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£444

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Wed 3/3

16:40-20:30

Nonstop8h 50m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£444

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Thu 4/3

11:25-15:15

Nonstop8h 50m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£444

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Mon 30/11

20:45-16:20

1 stop24h 35m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£467

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Sat 13/2

05:00-15:55

1 stop15h 55m

Washington, D.C. Dulles Intl

Sat 20/2

18:40-11:25

1 stop11h 45m

£520

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Thu 19/11

05:00-17:28

2 stops17h 28m

Washington, D.C. Dulles Intl

Sat 28/11

18:40-17:30

1 stop17h 50m

£524

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Tue 24/11

05:00-17:28

2 stops17h 28m

Washington, D.C. Dulles Intl

Tue 15/12

12:35-11:25

2 stops17h 50m

£525

LisbonWashington, D.C.

LIS Lisbon Humberto Delgado - IAD Washington, D.C. Dulles Intl

LISIAD

Lisbon Humberto Delgado

Thu 19/11

10:00-00:41

2 stops19h 41m

Washington, D.C. Dulles Intl

Sat 28/11

12:35-08:00

1 stop14h 25m

£535

Flights are sorted by cheapest return flights first.

Deals found on 2/11

Showing 1-10 of 17 resultsSorted by cheapest first
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Best time to book a flight from Lisbon to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Lisbon with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Lisbon to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from Lisbon to Washington, D.C. Dulles Intl Airport?

The best time to book flights from Lisbon to Washington, D.C. Dulles Intl Airport is 14 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Lisbon to Washington, D.C. Dulles Intl Airport?

Currently, March is the cheapest month in which you can book a flight from Lisbon to Washington, D.C. Dulles Intl Airport (average of £499). Flying from Lisbon to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £726). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LIS to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Lisbon to Washington, D.C. Dulles Intl Airport as you normally would.

How much does it cost for a return flight from Lisbon to Washington, D.C. Dulles Intl Airport?

Airfare is below average for this route at the moment.

Lisbon to Washington, D.C. Dulles Intl Airport flights typically cost between £531 and £654 in November.
The cheapest return price found within the last 5 days was £518 on Multiple Airlines (13 Nov–22 Nov).

Related info for your journey

  • What airport do you fly from for flights from Lisbon to Washington, D.C. Dulles Intl?

    If you book a flight to Washington, D.C. Dulles Intl from Lisbon, you will be flying from Humberto Delgado, which is the city’s only airport. Lisbon Humberto Delgado (LIS) is located 4.2 mi from the center of Lisbon. There are 2 flights from Humberto Delgado to Washington, D.C. Dulles Intl per day from 0 different airlines.

  • How long is the flight from Lisbon to Washington, D.C. Dulles Intl Airport?

    Airlines like Delta fly from Lisbon to Washington, D.C. Dulles Intl Airport in about 15h 55m. The time it takes to get you to your destination can typically vary by up to . There are 3580 mi between Lisbon and Washington, D.C. Dulles Intl Airport.

  • What are the most reliable airlines from Lisbon to Washington, D.C. Dulles Intl Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Lisbon to Washington, D.C. Dulles Intl Airport on time: JetBlue (75%), TAP AIR PORTUGAL (75%), Air Canada (67%).

  • Can I find deals for flights from Lisbon to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Lisbon to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Lisbon to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Lisbon to Dulles Intl.

  • Can I find deals for business class flights from Lisbon to Dulles Intl?

    Yes. Cheapflights offers flight deals from Lisbon to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Lisbon to Washington, D.C. Dulles Intl Airport?

    Currently, March is the cheapest month in which you can book a flight from Lisbon to Washington, D.C. Dulles Intl Airport (average of £499). Flying from Lisbon to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £726). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Silver Spring
Alexandria
Gaithersburg
Oxon Hill
Hanover
Woodbridge
Glen Burnie
Springfield
Sterling

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