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Cheap flights from Lisbon to Washington, D.C. from $390

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 9/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Delta Logo
5:00 am - 3:35 pmLIS-IAD
15h 35m1 stop
Delta Logo
9:20 pm - 2:50 pmIAD-LIS
12h 30m1 stop
$470Delta
Find Deal
Thu, Sep 11 - Fri, Sep 19
American Airlines Logo
8:20 am - 4:30 pmLIS-IAD
13h 10m1 stop
American Airlines Logo
6:15 pm - 5:45 pmIAD-LIS
18h 30m1 stop
$474American Airlines
Find Deal
Thu, Nov 6 - Wed, Nov 19
American Airlines Logo
6:35 am - 3:00 pmLIS-IAD
13h 25m1 stop
American Airlines Logo
10:40 pm - 5:55 pmIAD-LIS
14h 15m1 stop
$475American Airlines
Find Deal
Wed, Sep 3 - Wed, Sep 17
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
$485Scandinavian Airlines
Find Deal
Wed, Nov 19 - Thu, Nov 27
British Airways Logo
7:20 am - 5:35 pmLIS-IAD
15h 15m1 stop
British Airways Logo
10:55 pm - 6:55 pmIAD-LIS
16h 00m1 stop
$488British Airways
Find Deal
Thu, Aug 28 - Mon, Oct 27
British Airways Logo
7:20 am - 8:15 pmLIS-IAD
17h 55m1 stop
British Airways Logo
10:45 pm - 11:05 pmIAD-LIS
19h 20m1 stop
$490British Airways
Find Deal
Wed, Oct 1 - Thu, Oct 16
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
$493TAP AIR PORTUGAL
Find Deal
Tue, Nov 11 - Tue, Dec 2
TAP AIR PORTUGAL Logo
5:10 pm - 9:00 pmLIS-IAD
8h 50mnonstop
TAP AIR PORTUGAL Logo
5:30 pm - 5:35 amIAD-LIS
7h 05mnonstop
$495TAP AIR PORTUGAL
Find Deal
Wed, Nov 19 - Thu, Nov 27
United Airlines Logo
5:00 am - 11:45 amLIS-IAD
35h 45m2 stops
United Airlines Logo
8:35 am - 9:20 amIAD-LIS
19h 45m2 stops
$557United Airlines
Find Deal
Tue, Nov 11 - Tue, Dec 2
United Airlines Logo
11:55 am - 3:30 pmLIS-IAD
8h 35mnonstop
United Airlines Logo
8:45 am - 8:10 amIAD-LIS
18h 25m1 stop
$587United Airlines
Find Deal
Thu, Nov 6 - Wed, Nov 19

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
Sep 11
LIS5:00 amLisbon Humberto Delgado
15h 35m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Sep 19
IAD9:20 pmWashington, D.C. Dulles Intl
12h 30m
1 stop
LIS2:50 pmLisbon Humberto Delgado
Delta
Sep 11
LIS5:00 amLisbon Humberto Delgado
16h 31m
2 stops
IAD4:31 pmWashington, D.C. Dulles Intl
Sep 19
IAD9:20 pmWashington, D.C. Dulles Intl
15h 30m
1 stop
LIS5:50 pmLisbon Humberto Delgado
Delta
Dec 2
LIS5:00 amLisbon Humberto Delgado
15h 45m
1 stop
IAD3:45 pmWashington, D.C. Dulles Intl
Dec 7
IAD9:25 pmWashington, D.C. Dulles Intl
15h 05m
1 stop
LIS5:30 pmLisbon Humberto Delgado

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 6
LIS8:20 amLisbon Humberto Delgado
13h 10m
1 stop
IAD4:30 pmWashington, D.C. Dulles Intl
Nov 19
IAD6:15 pmWashington, D.C. Dulles Intl
18h 30m
1 stop
LIS5:45 pmLisbon Humberto Delgado
American Airlines
Sep 3
LIS6:35 amLisbon Humberto Delgado
13h 25m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
Sep 17
IAD10:40 pmWashington, D.C. Dulles Intl
14h 15m
1 stop
LIS5:55 pmLisbon Humberto Delgado
American Airlines
Nov 11
LIS10:40 amLisbon Humberto Delgado
14h 05m
1 stop
IAD7:45 pmWashington, D.C. Dulles Intl
Dec 2
IAD6:15 pmWashington, D.C. Dulles Intl
18h 30m
1 stop
LIS5:45 pmLisbon Humberto Delgado

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, November 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 $568. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of November, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $600.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Thursday 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 $732. 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 $788 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 25 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 25 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 June 2025, prices for Lisbon to Washington, D.C. Dulles Intl Airport flights are approximately 9% more expensive 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

$390

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 $390. The best round-trip flight deal from Lisbon to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $470.
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.

  • 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
8,790 reviews
Search United Airlines flights
TAP AIR PORTUGALPriceFrom $548Free CancellationRating
7.1
1,885 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 8,790 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 $636 for United Airlines flights on this route.

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

    Across 1,885 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 $548 to $734. 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
Laurel
Woodbridge
Silver Spring
Tysons
Waldorf
Fredericksburg
Manassas
Harpers Ferry
Gaithersburg
Towson
Rockville
Fairfax
Linthicum Heights
Glen Burnie
Reston

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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