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Cheap flights from Lisbon to Washington, D.C. from $376

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 11/14. 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

Multiple Airlines Logo
6:30 am - 7:20 pmLIS-IAD
17h 50m2 stops
Multiple Airlines Logo
6:20 pm - 12:05 pmIAD-LIS
12h 45m1 stop
$518Multiple Airlines
Find Deal
Fri, Nov 21 - Tue, Dec 2
Multiple Airlines Logo
7:05 am - 7:55 pmLIS-IAD
17h 50m1 stop
Multiple Airlines Logo
6:20 pm - 5:40 pmIAD-LIS
18h 20m1 stop
$520Multiple Airlines
Find Deal
Fri, Nov 21 - Tue, Dec 2
American Airlines Logo
6:45 pm - 5:30 pmLIS-IAD
26h 45m1 stop
American Airlines Logo
9:45 pm - 10:30 pmIAD-LIS
19h 45m1 stop
$523American Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 15
American Airlines Logo
6:45 pm - 5:30 pmLIS-IAD
26h 45m1 stop
American Airlines Logo
6:20 pm - 2:50 pmIAD-LIS
15h 30m1 stop
$526American Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 15
Lufthansa Logo
5:05 am - 1:30 pmLIS-IAD
13h 25m1 stop
Lufthansa Logo
11:05 pm - 10:15 amIAD-LIS
7h 10mnonstop
$550Lufthansa
Find Deal
Thu, Oct 9 - Mon, Oct 27
TAP AIR PORTUGAL Logo
11:25 am - 4:15 pmLIS-IAD
8h 50mnonstop
TAP AIR PORTUGAL Logo
5:30 pm - 5:35 amIAD-LIS
7h 05mnonstop
$553TAP AIR PORTUGAL
Find Deal
Sat, Nov 1 - Sat, Nov 15
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, Nov 8 - Sat, Nov 15
United Airlines Logo
5:05 am - 3:50 pmLIS-IAD
15h 45m1 stop
United Airlines Logo
8:16 am - 11:05 amIAD-LIS
21h 49m2 stops
$570United Airlines
Find Deal
Fri, Oct 10 - Sun, Oct 12
Lufthansa Logo
5:05 am - 3:50 pmLIS-IAD
15h 45m1 stop
Lufthansa Logo
10:15 pm - 10:30 amIAD-LIS
7h 15mnonstop
$575Lufthansa
Find Deal
Thu, Oct 16 - Thu, Oct 23
United Airlines Logo
12:20 pm - 3:45 pmLIS-IAD
8h 25mnonstop
United Airlines Logo
11:05 pm - 10:15 amIAD-LIS
7h 10mnonstop
$589United Airlines
Find Deal
Thu, Oct 9 - Mon, Oct 27

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
Nov 1
LIS6:45 pmLisbon Humberto Delgado
26h 45m
1 stop
IAD5:30 pmWashington, D.C. Dulles Intl
Nov 15
IAD9:45 pmWashington, D.C. Dulles Intl
19h 45m
1 stop
LIS10:30 pmLisbon Humberto Delgado
$523
Find similar
American Airlines
Nov 1
LIS6:45 pmLisbon Humberto Delgado
26h 45m
1 stop
IAD5:30 pmWashington, D.C. Dulles Intl
Nov 15
IAD6:20 pmWashington, D.C. Dulles Intl
15h 30m
1 stop
LIS2:50 pmLisbon Humberto Delgado
$526
Find similar
American Airlines
Nov 1
LIS6:45 pmLisbon Humberto Delgado
26h 45m
1 stop
IAD5:30 pmWashington, D.C. Dulles Intl
Nov 15
IAD1:58 pmWashington, D.C. Dulles Intl
14h 07m
2 stops
LIS9:05 amLisbon Humberto Delgado
$548
Find similar

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

Our best Delta deals on Lisbon to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Nov 1
LIS5:00 amLisbon Humberto Delgado
16h 05m
1 stop
IAD5:05 pmWashington, D.C. Dulles Intl
Nov 15
IAD6:50 pmWashington, D.C. Dulles Intl
11h 30m
1 stop
LIS11:20 amLisbon Humberto Delgado
$528
Find similar
Delta
Nov 1
LIS5:00 amLisbon Humberto Delgado
16h 05m
1 stop
IAD5:05 pmWashington, D.C. Dulles Intl
Nov 15
IAD6:50 pmWashington, D.C. Dulles Intl
11h 30m
1 stop
LIS11:20 amLisbon Humberto Delgado
$531
Find similar
Delta
Oct 16
LIS5:00 amLisbon Humberto Delgado
15h 35m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Oct 23
IAD12:09 pmWashington, D.C. Dulles Intl
14h 51m
1 stop
LIS8:00 amLisbon Humberto Delgado
$532
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 September 17, 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

Fri 11/21

6:30 am-7:20 pm

2 stops17h 50m

Washington, D.C. Dulles Intl

Tue 12/2

6:20 pm-12:05 pm

1 stop12h 45m

$518

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 11/21

7:05 am-7:55 pm

1 stop17h 50m

Washington, D.C. Dulles Intl

Tue 12/2

6:20 pm-5:40 pm

1 stop18h 20m

$520

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 11/1

6:45 pm-5:30 pm

1 stop26h 45m

Washington, D.C. Dulles Intl

Sat 11/15

9:45 pm-10:30 pm

1 stop19h 45m

$523

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 11/1

6:45 pm-5:30 pm

1 stop26h 45m

Washington, D.C. Dulles Intl

Sat 11/15

6:20 pm-2:50 pm

1 stop15h 30m

$526

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 10/9

5:05 am-1:30 pm

1 stop13h 25m

Washington, D.C. Dulles Intl

Mon 10/27

11:05 pm-10:15 am

Nonstop7h 10m

$550

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 11/1

11:25 am-4:15 pm

Nonstop8h 50m

Washington, D.C. Dulles Intl

Sat 11/15

5:30 pm-5:35 am

Nonstop7h 05m

$553

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 11/8

11:25 am-3:15 pm

Nonstop8h 50m

Washington, D.C. Dulles Intl

Sat 11/15

5:30 pm-5:35 am

Nonstop7h 05m

$561

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Fri 10/10

5:05 am-3:50 pm

1 stop15h 45m

Washington, D.C. Dulles Intl

Sun 10/12

8:16 am-11:05 am

2 stops21h 49m

$570

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 10/16

5:05 am-3:50 pm

1 stop15h 45m

Washington, D.C. Dulles Intl

Thu 10/23

10:15 pm-10:30 am

Nonstop7h 15m

$575

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 10/9

12:20 pm-3:45 pm

Nonstop8h 25m

Washington, D.C. Dulles Intl

Mon 10/27

11:05 pm-10:15 am

Nonstop7h 10m

$589

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 $606. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of March, 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 $721. 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 $779 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 $721 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?

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 September 2025, prices for Lisbon to Washington, D.C. Dulles Intl Airport flights are approximately 24% 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

$395

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 $395. The best round-trip flight deal from Lisbon to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $738.
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 25m.

  • 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
8,926 reviews
Search United Airlines flights
LufthansaPriceFrom $536Free CancellationRating
6.8
7,409 reviews
Search Lufthansa flights
TAP AIR PORTUGALPriceFrom $541Free CancellationRating
7.1
1,977 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 8,926 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 1,977 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 $753. 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
National Harbor
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Manassas
Reston
Fairfax
Glen Burnie
Gaithersburg

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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