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Cheap flights from Lisbon to Washington, D.C. from $322

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 3/30. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
4:55 pm - 5:15 pm
LIS
-
IAD
29h 20m1 stop
Scandinavian Airlines Logo
8:30 pm - 3:50 pm
IAD
-
LIS
14h 20m1 stop
$471Scandinavian Airlines
Wed, Feb 11 - Thu, Feb 19
Multiple Airlines Logo
6:35 am - 3:30 pm
LIS
-
IAD
13h 55m1 stop
Multiple Airlines Logo
7:15 pm - 12:45 pm
IAD
-
LIS
12h 30m1 stop
$508Multiple Airlines
Mon, Jun 15 - Mon, Jun 22
Finnair Logo
6:35 am - 3:30 pm
LIS
-
IAD
13h 55m1 stop
Finnair Logo
5:40 pm - 3:40 pm
IAD
-
LIS
17h 00m1 stop
$509Finnair
Wed, Apr 22 - Wed, Jun 3
American Airlines Logo
6:35 am - 3:30 pm
LIS
-
IAD
13h 55m1 stop
American Airlines Logo
10:25 pm - 3:40 pm
IAD
-
LIS
12h 15m1 stop
$511American Airlines
Tue, Mar 31 - Mon, Apr 6
American Airlines Logo
8:25 am - 3:30 pm
LIS
-
IAD
12h 05m1 stop
American Airlines Logo
10:25 pm - 11:10 pm
IAD
-
LIS
19h 45m1 stop
$512American Airlines
Mon, Jun 15 - Mon, Jun 22
Multiple Airlines Logo
6:30 am - 4:30 pm
LIS
-
IAD
15h 00m1 stop
Multiple Airlines Logo
6:20 pm - 12:10 pm
IAD
-
LIS
12h 50m1 stop
$513Multiple Airlines
Thu, Jan 22 - Wed, Feb 4
American Airlines Logo
6:30 am - 4:30 pm
LIS
-
IAD
15h 00m1 stop
American Airlines Logo
1:08 pm - 12:05 pm
IAD
-
LIS
41h 57m2 stops
$514American Airlines
Thu, Jan 22 - Mon, Jan 26
American Airlines Logo
6:30 am - 4:30 pm
LIS
-
IAD
15h 00m1 stop
American Airlines Logo
1:08 pm - 12:05 pm
IAD
-
LIS
41h 57m2 stops
$515American Airlines
Thu, Jan 22 - Mon, Jan 26
American Airlines Logo
6:35 am - 3:50 pm
LIS
-
IAD
38h 15m2 stops
American Airlines Logo
7:15 pm - 3:40 pm
IAD
-
LIS
15h 25m1 stop
$517American Airlines
Tue, Mar 31 - Mon, Apr 6
American Airlines Logo
6:30 am - 11:12 pm
LIS
-
IAD
21h 42m2 stops
American Airlines Logo
1:08 pm - 12:05 pm
IAD
-
LIS
41h 57m2 stops
$519American Airlines
Thu, Jan 22 - Mon, Jan 26

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

Our best Scandinavian Airlines deals on Lisbon to Washington, D.C. Dulles Intl Airport flight tickets
Scandinavian Airlines
Feb 11
LIS4:55 pmLisbon Humberto Delgado
29h 20m
1 stop
IAD5:15 pmWashington, D.C. Dulles Intl
Feb 19
IAD8:30 pmWashington, D.C. Dulles Intl
14h 20m
1 stop
LIS3:50 pmLisbon Humberto Delgado
$471
Find similar
Scandinavian Airlines
Feb 11
LIS4:55 pmLisbon Humberto Delgado
29h 20m
1 stop
IAD5:15 pmWashington, D.C. Dulles Intl
Feb 14
IAD8:30 pmWashington, D.C. Dulles Intl
14h 35m
1 stop
LIS4:05 pmLisbon Humberto Delgado
$540
Find similar

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

Our best British Airways deals on Lisbon to Washington, D.C. Dulles Intl Airport flight tickets
British Airways
Feb 12
LIS10:40 amLisbon Humberto Delgado
14h 15m
1 stop
IAD7:55 pmWashington, D.C. Dulles Intl
Feb 16
IAD6:20 pmWashington, D.C. Dulles Intl
15h 35m
1 stop
LIS2:55 pmLisbon Humberto Delgado
$526
Find similar
British Airways
Jan 22
LIS12:55 pmLisbon Humberto Delgado
31h 40m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Jan 26
IAD9:45 pmWashington, D.C. Dulles Intl
19h 10m
1 stop
LIS9:55 pmLisbon Humberto Delgado
$543
Find similar
British Airways
Jan 22
LIS10:40 amLisbon Humberto Delgado
14h 15m
1 stop
IAD7:55 pmWashington, D.C. Dulles Intl
Jan 26
IAD6:20 pmWashington, D.C. Dulles Intl
22h 35m
1 stop
LIS9:55 pmLisbon Humberto Delgado
$544
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Lisbon to Washington, D.C. Dulles Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated January 7, 2026.
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

Wed 2/11

4:55 pm-5:15 pm

1 stop29h 20m

Washington, D.C. Dulles Intl

Thu 2/19

8:30 pm-3:50 pm

1 stop14h 20m

$471

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 6/15

6:35 am-3:30 pm

1 stop13h 55m

Washington, D.C. Dulles Intl

Mon 6/22

7:15 pm-12:45 pm

1 stop12h 30m

$508

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 4/22

6:35 am-3:30 pm

1 stop13h 55m

Washington, D.C. Dulles Intl

Wed 6/3

5:40 pm-3:40 pm

1 stop17h 00m

$509

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 3/31

6:35 am-3:30 pm

1 stop13h 55m

Washington, D.C. Dulles Intl

Mon 4/6

10:25 pm-3:40 pm

1 stop12h 15m

$511

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 6/15

8:25 am-3:30 pm

1 stop12h 05m

Washington, D.C. Dulles Intl

Mon 6/22

10:25 pm-11:10 pm

1 stop19h 45m

$512

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/22

6:30 am-4:30 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Wed 2/4

6:20 pm-12:10 pm

1 stop12h 50m

$513

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/22

6:30 am-4:30 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Mon 1/26

1:08 pm-12:05 pm

2 stops41h 57m

$514

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/22

6:30 am-4:30 pm

1 stop15h 00m

Washington, D.C. Dulles Intl

Mon 1/26

1:08 pm-12:05 pm

2 stops41h 57m

$515

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 3/31

6:35 am-3:50 pm

2 stops38h 15m

Washington, D.C. Dulles Intl

Mon 4/6

7:15 pm-3:40 pm

1 stop15h 25m

$517

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/22

6:30 am-11:12 pm

2 stops21h 42m

Washington, D.C. Dulles Intl

Mon 1/26

1:08 pm-12:05 pm

2 stops41h 57m

$519

Flights are sorted by cheapest round-trip flights first.

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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

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

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

In general, December 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 $588. 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 $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 $895.

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 $800 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 12% 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 January 2026, prices for Lisbon to Washington, D.C. Dulles Intl Airport flights are approximately 6% cheaper 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

$763

Fastest flight time

8h 05m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Lisbon in the past 72 hours is $763. The best round-trip flight deal from Lisbon to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $599.
The fastest flight from Lisbon to Washington, D.C. Dulles Intl Airport takes 8h 05m
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 8h 05m.

  • 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?

  • 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?

  • What is the most popular airline 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
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $497Free CancellationRating
7.4
9,139 reviews
Search United Airlines flights
TAP AIR PORTUGALPriceFrom $561Free CancellationRating
7.1
2,109 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 6 times per week, with 2,109 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 $561 (round-trip), much lower than the average airfare cost of $707 for TAP AIR PORTUGAL flights on this route.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Rockville
Gaithersburg
Harpers Ferry
Manassas
Sterling
Fairfax
Springfield

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.

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