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Cheap flights from Lisbon to Washington, D.C. from $356

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 8/27. 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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Find the cheapest flights from Lisbon to Washington, D.C. (LIS-IAD)

Cheap round-trip flights

Scandinavian Airlines Logo
4:55 pm - 5:15 pmLIS-IAD
29h 20m1 stop
Scandinavian Airlines Logo
8:30 pm - 4:05 pmIAD-LIS
14h 35m1 stop
$417Scandinavian Airlines
Find Deal
dom., nov. 23 - sáb., dic. 6
Scandinavian Airlines Logo
4:55 pm - 6:50 pmLIS-IAD
30h 55m1 stop
Scandinavian Airlines Logo
8:30 pm - 4:05 pmIAD-LIS
14h 35m1 stop
$435Scandinavian Airlines
Find Deal
vie., nov. 21 - sáb., dic. 6
Logo
7:05 am - 6:50 pmLIS-IAD
16h 45m1 stop
Logo
8:30 pm - 8:55 amIAD-LIS
31h 25m1 stop
$517
Find Deal
sáb., nov. 22 - sáb., dic. 6
Logo
7:05 am - 7:11 pmLIS-IAD
17h 06m2 stops
Logo
8:30 pm - 4:05 pmIAD-LIS
14h 35m1 stop
$528
Find Deal
sáb., nov. 22 - sáb., dic. 6
United Airlines Logo
5:00 am - 2:35 pmLIS-IAD
14h 35m1 stop
United Airlines Logo
5:20 pm - 8:10 amIAD-LIS
9h 50m1 stop
$541United Airlines
Find Deal
jue., dic. 18 - jue., ene. 8
Lufthansa Logo
5:00 am - 3:50 pmLIS-IAD
15h 50m1 stop
Lufthansa Logo
6:00 pm - 2:50 pmIAD-LIS
15h 50m1 stop
$543Lufthansa
Find Deal
mar., nov. 11 - mié., nov. 19
United Airlines Logo
5:05 am - 3:50 pmLIS-IAD
15h 45m1 stop
United Airlines Logo
10:35 pm - 8:20 amIAD-LIS
28h 45m1 stop
$545United Airlines
Find Deal
jue., sep. 11 - sáb., sep. 27
Air Canada Logo
5:00 am - 9:20 pmLIS-IAD
21h 20m2 stops
Air Canada Logo
12:40 pm - 9:20 amIAD-LIS
15h 40m2 stops
$550Air Canada
Find Deal
mié., dic. 17 - mar., ene. 6
Air Canada Logo
5:00 am - 9:20 pmLIS-IAD
21h 20m2 stops
Air Canada Logo
5:10 pm - 9:20 amIAD-LIS
11h 10m2 stops
$560Air Canada
Find Deal
mié., dic. 17 - jue., ene. 1
Lufthansa Logo
5:00 am - 2:35 pmLIS-IAD
14h 35m1 stop
Lufthansa Logo
6:00 pm - 11:30 amIAD-LIS
12h 30m1 stop
$582Lufthansa
Find Deal
vie., dic. 19 - vie., ene. 2

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

Our best Iberia deals on Lisbon to Washington, D.C. Dulles Intl Airport flight tickets
Iberia
Aug 25
LIS8:25 amLisbon Humberto Delgado
11h 35m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
Sep 7
IAD4:35 pmWashington, D.C. Dulles Intl
25h 50m
1 stop
LIS11:25 pmLisbon Humberto Delgado
$617
Find similar
Iberia
Aug 25
LIS8:25 amLisbon Humberto Delgado
11h 35m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
Sep 7
IAD4:35 pmWashington, D.C. Dulles Intl
25h 50m
1 stop
LIS11:25 pmLisbon Humberto Delgado
$661
Find similar
Iberia
Aug 25
LIS8:25 amLisbon Humberto Delgado
11h 35m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
Sep 7
IAD4:35 pmWashington, D.C. Dulles Intl
25h 50m
1 stop
LIS11:25 pmLisbon Humberto Delgado
$676
Find similar

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
Aug 25
LIS11:05 amLisbon Humberto Delgado
16h 51m
2 stops
IAD10:56 pmWashington, D.C. Dulles Intl
Sep 7
IAD10:40 pmWashington, D.C. Dulles Intl
19h 25m
1 stop
LIS11:05 pmLisbon Humberto Delgado
$616
Find similar
American Airlines
Aug 16
LIS11:05 amLisbon Humberto Delgado
13h 44m
2 stops
IAD7:49 pmWashington, D.C. Dulles Intl
Sep 1
IAD10:40 pmWashington, D.C. Dulles Intl
19h 30m
1 stop
LIS11:10 pmLisbon Humberto Delgado
$692
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 agosto 14, 2025.
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

dom. 11/23

4:55 pm-5:15 pm

1 stop29h 20m

Washington, D.C. Dulles Intl

sáb. 12/6

8:30 pm-4:05 pm

1 stop14h 35m

$417

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

vie. 11/21

4:55 pm-6:50 pm

1 stop30h 55m

Washington, D.C. Dulles Intl

sáb. 12/6

8:30 pm-4:05 pm

1 stop14h 35m

$435

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

sáb. 11/22

7:05 am-6:50 pm

1 stop16h 45m

Washington, D.C. Dulles Intl

sáb. 12/6

8:30 pm-8:55 am

1 stop31h 25m

$517

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

sáb. 11/22

7:05 am-7:11 pm

2 stops17h 06m

Washington, D.C. Dulles Intl

sáb. 12/6

8:30 pm-4:05 pm

1 stop14h 35m

$528

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

jue. 12/18

5:00 am-2:35 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

jue. 1/8

5:20 pm-8:10 am

1 stop9h 50m

$541

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

mar. 11/11

5:00 am-3:50 pm

1 stop15h 50m

Washington, D.C. Dulles Intl

mié. 11/19

6:00 pm-2:50 pm

1 stop15h 50m

$543

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

jue. 9/11

5:05 am-3:50 pm

1 stop15h 45m

Washington, D.C. Dulles Intl

sáb. 9/27

10:35 pm-8:20 am

1 stop28h 45m

$545

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

mié. 12/17

5:00 am-9:20 pm

2 stops21h 20m

Washington, D.C. Dulles Intl

mar. 1/6

12:40 pm-9:20 am

2 stops15h 40m

$550

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

mié. 12/17

5:00 am-9:20 pm

2 stops21h 20m

Washington, D.C. Dulles Intl

jue. 1/1

5:10 pm-9:20 am

2 stops11h 10m

$560

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

vie. 12/19

5:00 am-2:35 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

vie. 1/2

6:00 pm-11:30 am

1 stop12h 30m

$582

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 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, March 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 $601. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of March, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $635.

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 $691. 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 $881.

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 $775 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

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Lisbon when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $712 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Lisbon for as low as $573 on momondo.

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?

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 August 2025, prices for Lisbon to Washington, D.C. Dulles Intl Airport flights are approximately 8% 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

$356

Fastest flight time

8h 15m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Lisbon in the past 72 hours is $356. The best round-trip flight deal from Lisbon to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $417.
The fastest flight from Lisbon to Washington, D.C. Dulles Intl Airport takes 8h 15m
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 15m.

  • 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 $534Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
LufthansaPriceFrom $536Free CancellationRating
6.8
7,317 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $541Free CancellationRating
7.1
1,947 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 6 times per week, with 8,916 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 $534 (round-trip), much lower than the average airfare cost of $635 for United Airlines flights on this route.

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

    Across 1,948 TAP AIR PORTUGAL reviews on momondo, the average score is 7.1/10. TAP AIR PORTUGAL flies from Lisbon to Washington, D.C. Dulles Intl Airport about 12 times each week, with ticket deals ranging from $541 to $727. Price data is based on momondo searches in the last 72 hours.

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

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