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Cheap flights from Lisbon to Washington, D.C. from $444

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 12/13. 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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Scandinavian Airlines Logo
4:25 pm - 4:50 pmLIS-IAD
29h 25m1 stop
Scandinavian Airlines Logo
8:20 pm - 3:35 pmIAD-LIS
14h 15m1 stop
$472Scandinavian Airlines
Find Deal
Sat, Apr 18 - Mon, Apr 20
Scandinavian Airlines Logo
4:25 pm - 4:50 pmLIS-IAD
29h 25m1 stop
Scandinavian Airlines Logo
8:20 pm - 10:05 pmIAD-LIS
20h 45m2 stops
$533Scandinavian Airlines
Find Deal
Sat, Apr 18 - Mon, Apr 20
Scandinavian Airlines Logo
6:10 pm - 7:09 pmLIS-IAD
29h 59m2 stops
Scandinavian Airlines Logo
8:30 pm - 4:05 pmIAD-LIS
14h 35m1 stop
$538Scandinavian Airlines
Find Deal
Mon, Jan 12 - Sat, Jan 17
Delta Logo
5:00 am - 4:05 pmLIS-IAD
16h 05m1 stop
Delta Logo
6:50 pm - 3:10 pmIAD-LIS
15h 20m1 stop
$539Delta
Find Deal
Sat, Nov 22 - Sat, Jan 10
Multiple Airlines Logo
3:30 pm - 4:05 pmLIS-IAD
29h 35m1 stop
Multiple Airlines Logo
6:50 pm - 5:30 pmIAD-LIS
17h 40m1 stop
$540Multiple Airlines
Find Deal
Wed, Nov 19 - Wed, Nov 26
Multiple Airlines Logo
5:00 am - 4:05 pmLIS-IAD
16h 05m1 stop
Multiple Airlines Logo
6:50 pm - 3:10 pmIAD-LIS
15h 20m1 stop
$541Multiple Airlines
Find Deal
Thu, Nov 20 - Tue, Nov 25
Delta Logo
5:00 am - 7:09 pmLIS-IAD
19h 09m2 stops
Delta Logo
12:23 pm - 11:20 amIAD-LIS
17h 57m2 stops
$544Delta
Find Deal
Thu, Jan 22 - Tue, Feb 10
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
$561TAP AIR PORTUGAL
Find Deal
Sat, Dec 13 - Mon, Dec 29
United Airlines Logo
5:00 am - 3:50 pmLIS-IAD
15h 50m1 stop
United Airlines Logo
9:55 am - 9:20 amIAD-LIS
18h 25m1 stop
$563United Airlines
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Wed, Dec 17 - Tue, Apr 28
United Airlines Logo
5:00 am - 3:50 pmLIS-IAD
15h 50m1 stop
United Airlines Logo
10:20 pm - 10:45 pmIAD-LIS
19h 25m1 stop
$567United Airlines
Find Deal
Wed, Dec 17 - Sun, May 3

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
Apr 18
LIS4:25 pmLisbon Humberto Delgado
29h 25m
1 stop
IAD4:50 pmWashington, D.C. Dulles Intl
Apr 20
IAD8:20 pmWashington, D.C. Dulles Intl
14h 15m
1 stop
LIS3:35 pmLisbon Humberto Delgado
$472
Find similar
Scandinavian Airlines
Apr 18
LIS4:25 pmLisbon Humberto Delgado
29h 25m
1 stop
IAD4:50 pmWashington, D.C. Dulles Intl
Apr 20
IAD8:20 pmWashington, D.C. Dulles Intl
20h 45m
2 stops
LIS10:05 pmLisbon Humberto Delgado
$533
Find similar
Scandinavian Airlines
Jan 12
LIS6:10 pmLisbon Humberto Delgado
29h 59m
2 stops
IAD7:09 pmWashington, D.C. Dulles Intl
Jan 17
IAD8:30 pmWashington, D.C. Dulles Intl
14h 35m
1 stop
LIS4:05 pmLisbon Humberto Delgado
$538
Find similar

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

Our best Lufthansa deals on Lisbon to Washington, D.C. Dulles Intl Airport flight tickets
Lufthansa
Nov 20
LIS5:00 amLisbon Humberto Delgado
14h 35m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
Nov 24
IAD10:05 pmWashington, D.C. Dulles Intl
7h 10m
LIS10:15 amLisbon Humberto Delgado
$564
Find similar
Lufthansa
Dec 18
LIS5:00 amLisbon Humberto Delgado
15h 50m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
Dec 31
IAD10:55 pmWashington, D.C. Dulles Intl
19h 35m
1 stop
LIS11:30 pmLisbon Humberto Delgado
$566
Find similar
Lufthansa
Nov 19
LIS5:00 amLisbon Humberto Delgado
15h 50m
1 stop
IAD3:50 pmWashington, D.C. Dulles Intl
Nov 26
IAD10:05 pmWashington, D.C. Dulles Intl
7h 10m
LIS10:15 amLisbon Humberto Delgado
$586
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 November 6, 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

Sat 4/18

4:25 pm-4:50 pm

1 stop29h 25m

Washington, D.C. Dulles Intl

Mon 4/20

8:20 pm-3:35 pm

1 stop14h 15m

$472

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 4/18

4:25 pm-4:50 pm

1 stop29h 25m

Washington, D.C. Dulles Intl

Mon 4/20

8:20 pm-10:05 pm

2 stops20h 45m

$533

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Mon 1/12

6:10 pm-7:09 pm

2 stops29h 59m

Washington, D.C. Dulles Intl

Sat 1/17

8:30 pm-4:05 pm

1 stop14h 35m

$538

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 11/22

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Sat 1/10

6:50 pm-3:10 pm

1 stop15h 20m

$539

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 11/19

3:30 pm-4:05 pm

1 stop29h 35m

Washington, D.C. Dulles Intl

Wed 11/26

6:50 pm-5:30 pm

1 stop17h 40m

$540

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 11/20

5:00 am-4:05 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Tue 11/25

6:50 pm-3:10 pm

1 stop15h 20m

$541

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 1/22

5:00 am-7:09 pm

2 stops19h 09m

Washington, D.C. Dulles Intl

Tue 2/10

12:23 pm-11:20 am

2 stops17h 57m

$544

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 12/13

11:25 am-3:15 pm

Nonstop8h 50m

Washington, D.C. Dulles Intl

Mon 12/29

5:30 pm-5:35 am

Nonstop7h 05m

$561

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 12/17

5:00 am-3:50 pm

1 stop15h 50m

Washington, D.C. Dulles Intl

Tue 4/28

9:55 am-9:20 am

1 stop18h 25m

$563

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 12/17

5:00 am-3:50 pm

1 stop15h 50m

Washington, D.C. Dulles Intl

Sun 5/3

10:20 pm-10:45 pm

1 stop19h 25m

$567

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 $610. 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 $617.

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 $681. 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 $889.

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 $791 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 $729 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.

Can stopping save me money on Lisbon to Washington, D.C. Dulles Intl Airport flights?

You could potentially save up to 6% 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 November 2025, prices for Lisbon to Washington, D.C. Dulles Intl Airport flights are approximately 18% 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

$654

Fastest flight time

8h 20m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from Lisbon in the past 72 hours is $654. The best round-trip flight deal from Lisbon to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $835.
The fastest flight from Lisbon to Washington, D.C. Dulles Intl Airport takes 8h 20m
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 35m.

  • 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
9,004 reviews
Search United Airlines flights
TAP AIR PORTUGALPriceFrom $548Free CancellationRating
7.1
2,046 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 9,004 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 $711 for United Airlines flights on this route.

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

    Across 2,046 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 5 times each week, with ticket deals ranging from $548 to $721. 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
National Harbor
Gettysburg
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Reston
Manassas
Gaithersburg
Fairfax
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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