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Cheap flights from Lisbon to Washington, D.C. from $351

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 9/16. 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
$462Scandinavian Airlines
Find Deal
Wed, Nov 26 - Sat, Dec 27
KLM Logo
5:00 am - 3:35 pmLIS-IAD
15h 35m1 stop
KLM Logo
5:25 pm - 2:35 pmIAD-LIS
16h 10m1 stop
$507KLM
Find Deal
Mon, Sep 8 - Mon, Sep 22
Delta Logo
5:00 am - 3:35 pmLIS-IAD
15h 35m1 stop
Delta Logo
6:30 pm - 2:50 pmIAD-LIS
15h 20m1 stop
$534Delta
Find Deal
Mon, Sep 8 - Mon, Sep 22
Delta Logo
5:00 am - 3:35 pmLIS-IAD
15h 35m1 stop
Delta Logo
8:17 pm - 2:50 pmIAD-LIS
13h 33m2 stops
$537Delta
Find Deal
Mon, Sep 8 - Mon, Sep 22
United Airlines Logo
6:15 am - 7:25 pmLIS-IAD
18h 10m1 stop
United Airlines Logo
10:15 pm - 10:30 amIAD-LIS
7h 15mnonstop
$564United Airlines
Find Deal
Mon, Sep 8 - Mon, Sep 22
Lufthansa Logo
5:00 am - 3:50 pmLIS-IAD
15h 50m1 stop
Lufthansa Logo
11:10 pm - 11:30 pmIAD-LIS
19h 20m1 stop
$567Lufthansa
Find Deal
Mon, Nov 24 - Sat, Dec 27
Lufthansa Logo
6:15 am - 7:25 pmLIS-IAD
18h 10m1 stop
Lufthansa Logo
10:15 pm - 10:30 amIAD-LIS
7h 15mnonstop
$578Lufthansa
Find Deal
Mon, Sep 8 - Mon, Sep 22
United Airlines Logo
5:05 am - 1:30 pmLIS-IAD
13h 25m1 stop
United Airlines Logo
10:15 pm - 10:30 amIAD-LIS
7h 15mnonstop
$579United Airlines
Find Deal
Mon, Sep 8 - Mon, Sep 22
TAP AIR PORTUGAL Logo
10:45 am - 2:35 pmLIS-IAD
8h 50mnonstop
TAP AIR PORTUGAL Logo
5:30 pm - 5:35 amIAD-LIS
7h 05mnonstop
$585TAP AIR PORTUGAL
Find Deal
Tue, Nov 25 - Sat, Dec 27
TAP AIR PORTUGAL Logo
11:25 am - 3:15 pmLIS-IAD
8h 50mnonstop
TAP AIR PORTUGAL Logo
5:30 pm - 5:35 amIAD-LIS
7h 05mnonstop
$606TAP AIR PORTUGAL
Find Deal
Mon, Nov 24 - Sat, Dec 27

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

Our best Virgin Atlantic deals on Lisbon to Washington, D.C. Dulles Intl Airport flight tickets
Virgin Atlantic
Sep 8
LIS12:45 pmLisbon Humberto Delgado
15h 36m
2 stops
IAD11:21 pmWashington, D.C. Dulles Intl
Sep 22
IAD6:00 amWashington, D.C. Dulles Intl
21h 00m
2 stops
LIS8:00 amLisbon Humberto Delgado
$557
Find similar
Virgin Atlantic
Sep 8
LIS12:45 pmLisbon Humberto Delgado
15h 36m
2 stops
IAD11:21 pmWashington, D.C. Dulles Intl
Sep 22
IAD1:00 pmWashington, D.C. Dulles Intl
16h 45m
2 stops
LIS10:45 amLisbon Humberto Delgado
$560
Find similar
Virgin Atlantic
Sep 17
LIS10:00 amLisbon Humberto Delgado
18h 06m
2 stops
IAD11:06 pmWashington, D.C. Dulles Intl
Sep 24
IAD12:35 pmWashington, D.C. Dulles Intl
17h 10m
2 stops
LIS10:45 amLisbon Humberto Delgado
$565
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 29
LIS11:05 amLisbon Humberto Delgado
13h 34m
2 stops
IAD7:39 pmWashington, D.C. Dulles Intl
Sep 13
IAD7:25 pmWashington, D.C. Dulles Intl
22h 45m
1 stop
LIS11:10 pmLisbon Humberto Delgado
$552
Find similar
American Airlines
Aug 29
LIS11:05 amLisbon Humberto Delgado
17h 47m
2 stops
IAD11:52 pmWashington, D.C. Dulles Intl
Sep 13
IAD4:35 pmWashington, D.C. Dulles Intl
20h 50m
1 stop
LIS6:25 pmLisbon Humberto Delgado
$582
Find similar
American Airlines
Aug 7
LIS11:05 amLisbon Humberto Delgado
17h 54m
2 stops
IAD11:59 pmWashington, D.C. Dulles Intl
Aug 10
IAD4:35 pmWashington, D.C. Dulles Intl
18h 30m
1 stop
LIS4:05 pmLisbon Humberto Delgado
$748
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 August 4, 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

Wed 11/26

4:55 pm-5:15 pm

1 stop29h 20m

Washington, D.C. Dulles Intl

Sat 12/27

8:30 pm-4:05 pm

1 stop14h 35m

$462

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 9/8

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Mon 9/22

5:25 pm-2:35 pm

1 stop16h 10m

$507

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 9/8

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Mon 9/22

6:30 pm-2:50 pm

1 stop15h 20m

$534

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 9/8

5:00 am-3:35 pm

1 stop15h 35m

Washington, D.C. Dulles Intl

Mon 9/22

8:17 pm-2:50 pm

2 stops13h 33m

$537

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 9/8

6:15 am-7:25 pm

1 stop18h 10m

Washington, D.C. Dulles Intl

Mon 9/22

10:15 pm-10:30 am

Nonstop7h 15m

$564

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 11/24

5:00 am-3:50 pm

1 stop15h 50m

Washington, D.C. Dulles Intl

Sat 12/27

11:10 pm-11:30 pm

1 stop19h 20m

$567

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 9/8

6:15 am-7:25 pm

1 stop18h 10m

Washington, D.C. Dulles Intl

Mon 9/22

10:15 pm-10:30 am

Nonstop7h 15m

$578

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 9/8

5:05 am-1:30 pm

1 stop13h 25m

Washington, D.C. Dulles Intl

Mon 9/22

10:15 pm-10:30 am

Nonstop7h 15m

$579

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Tue 11/25

10:45 am-2:35 pm

Nonstop8h 50m

Washington, D.C. Dulles Intl

Sat 12/27

5:30 pm-5:35 am

Nonstop7h 05m

$585

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 11/24

11:25 am-3:15 pm

Nonstop8h 50m

Washington, D.C. Dulles Intl

Sat 12/27

5:30 pm-5:35 am

Nonstop7h 05m

$606

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, 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 Wednesday 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 $712. 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 $876.

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 $772 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 $713 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 $581 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.

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 4% 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

$351

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 $351. The best round-trip flight deal from Lisbon to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $462.
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.
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  • 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
8,912 reviews
Search United Airlines flights
LufthansaPriceFrom $536Free CancellationRating
6.8
7,285 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $541Free CancellationRating
7.1
1,942 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 7 times per week, with 8,912 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 1,942 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 14 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
Laurel
Silver Spring
Tysons
Waldorf
Fredericksburg
Harpers Ferry
Colonial Beach
Manassas
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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