Cheap flights from Washington, D.C. Dulles Intl Airport to Lisbon from $239

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Lisbon departing on 1/19. 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 Washington, D.C. Dulles Intl Airport to Lisbon

Cheap round-trip flights

Enter your travel dates to find the best prices.
Turkish Airlines Logo
2:30 pm - 3:05 pmIAD-LIS
20h 35m1 stop
Turkish Airlines Logo
5:55 am - 8:20 pmLIS-IAD
18h 25m1 stop
$624Turkish Airlines
Find Deal
Tue, Mar 10 - Fri, Mar 20
Turkish Airlines Logo
1:20 pm - 11:35 pmIAD-LIS
29h 15m1 stop
Turkish Airlines Logo
6:05 am - 7:45 pmLIS-IAD
18h 40m1 stop
$625Turkish Airlines
Find Deal
Mon, Apr 13 - Mon, Apr 20
Turkish Airlines Logo
2:30 pm - 3:05 pmIAD-LIS
20h 35m1 stop
Turkish Airlines Logo
5:05 pm - 11:35 amLIS-IAD
23h 30m1 stop
$626Turkish Airlines
Find Deal
Tue, Mar 17 - Tue, Apr 14
Royal Air Maroc Logo
8:45 pm - 4:55 pmIAD-LIS
15h 10m1 stop
Royal Air Maroc Logo
12:30 pm - 6:45 pmLIS-IAD
11h 15m1 stop
$627Royal Air Maroc
Find Deal
Sun, Jan 25 - Fri, Jan 30
Turkish Airlines Logo
1:30 pm - 10:40 amIAD-LIS
16h 10m1 stop
Turkish Airlines Logo
5:55 am - 7:20 pmLIS-IAD
18h 25m1 stop
$628Turkish Airlines
Find Deal
Thu, Feb 26 - Tue, Mar 3
Turkish Airlines Logo
1:30 pm - 10:40 amIAD-LIS
16h 10m1 stop
Turkish Airlines Logo
5:55 am - 7:20 pmLIS-IAD
18h 25m1 stop
$629Turkish Airlines
Find Deal
Thu, Feb 26 - Fri, Mar 6
Scandinavian Airlines Logo
12:23 pm - 4:30 pmIAD-LIS
23h 07m2 stops
Scandinavian Airlines Logo
4:55 pm - 5:15 pmLIS-IAD
29h 20m1 stop
$630Scandinavian Airlines
Find Deal
Sun, Mar 1 - Wed, Mar 4
Royal Air Maroc Logo
9:45 pm - 11:35 amIAD-LIS
9h 50m1 stop
Royal Air Maroc Logo
6:40 pm - 7:00 pmLIS-IAD
29h 20m1 stop
$631Royal Air Maroc
Find Deal
Sun, Mar 15 - Thu, Apr 16
Multiple Airlines Logo
9:45 am - 9:55 pmIAD-LIS
31h 10m3 stops
Multiple Airlines Logo
6:15 am - 8:54 pmLIS-IAD
19h 39m2 stops
$632Multiple Airlines
Find Deal
Fri, Feb 6 - Wed, Feb 11
Multiple Airlines Logo
4:30 pm - 6:30 pmIAD-LIS
21h 00m3 stops
Multiple Airlines Logo
6:15 am - 8:05 pmLIS-IAD
18h 50m2 stops
$633Multiple Airlines
Find Deal
Wed, Dec 10 - Wed, Dec 17

TAP AIR PORTUGAL flights from Washington, D.C. Dulles Intl Airport to Lisbon

Our best TAP AIR PORTUGAL deals on Washington, D.C. Dulles Intl Airport to Lisbon flight tickets
TAP AIR PORTUGAL
Jan 16
IAD10:30 pmWashington, D.C. Dulles Intl
7h 05m
LIS10:35 amLisbon Humberto Delgado
Feb 1
LIS5:10 pmLisbon Humberto Delgado
8h 50m
IAD9:00 pmWashington, D.C. Dulles Intl
TAP AIR PORTUGAL
Mar 11
IAD11:30 pmWashington, D.C. Dulles Intl
7h 05m
LIS10:35 amLisbon Humberto Delgado
Mar 18
LIS5:15 pmLisbon Humberto Delgado
8h 45m
IAD10:00 pmWashington, D.C. Dulles Intl
TAP AIR PORTUGAL
Mar 7
IAD5:30 pmWashington, D.C. Dulles Intl
7h 05m
LIS5:35 amLisbon Humberto Delgado
Mar 13
LIS5:15 pmLisbon Humberto Delgado
8h 45m
IAD10:00 pmWashington, D.C. Dulles Intl

Royal Air Maroc flights from Washington, D.C. Dulles Intl Airport to Lisbon

Our best Royal Air Maroc deals on Washington, D.C. Dulles Intl Airport to Lisbon flight tickets
Royal Air Maroc
Jan 25
IAD8:45 pmWashington, D.C. Dulles Intl
15h 10m
1 stop
LIS4:55 pmLisbon Humberto Delgado
Jan 30
LIS12:30 pmLisbon Humberto Delgado
11h 15m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
Royal Air Maroc
Mar 15
IAD9:45 pmWashington, D.C. Dulles Intl
9h 50m
1 stop
LIS11:35 amLisbon Humberto Delgado
Apr 16
LIS6:40 pmLisbon Humberto Delgado
29h 20m
1 stop
IAD7:00 pmWashington, D.C. Dulles Intl
Royal Air Maroc
Mar 29
IAD9:00 pmWashington, D.C. Dulles Intl
15h 40m
1 stop
LIS5:40 pmLisbon Humberto Delgado
Apr 5
LIS6:40 pmLisbon Humberto Delgado
29h 20m
1 stop
IAD7:00 pmWashington, D.C. Dulles Intl

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Lisbon 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 13, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 3/10

2:30 pm-3:05 pm

1 stop20h 35m

Lisbon Humberto Delgado

Fri 3/20

5:55 am-8:20 pm

1 stop18h 25m

$624

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 4/13

1:20 pm-11:35 pm

1 stop29h 15m

Lisbon Humberto Delgado

Mon 4/20

6:05 am-7:45 pm

1 stop18h 40m

$625

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 3/17

2:30 pm-3:05 pm

1 stop20h 35m

Lisbon Humberto Delgado

Tue 4/14

5:05 pm-11:35 am

1 stop23h 30m

$626

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sun 1/25

8:45 pm-4:55 pm

1 stop15h 10m

Lisbon Humberto Delgado

Fri 1/30

12:30 pm-6:45 pm

1 stop11h 15m

$627

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Thu 2/26

1:30 pm-10:40 am

1 stop16h 10m

Lisbon Humberto Delgado

Tue 3/3

5:55 am-7:20 pm

1 stop18h 25m

$628

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Thu 2/26

1:30 pm-10:40 am

1 stop16h 10m

Lisbon Humberto Delgado

Fri 3/6

5:55 am-7:20 pm

1 stop18h 25m

$629

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sun 3/1

12:23 pm-4:30 pm

2 stops23h 07m

Lisbon Humberto Delgado

Wed 3/4

4:55 pm-5:15 pm

1 stop29h 20m

$630

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sun 3/15

9:45 pm-11:35 am

1 stop9h 50m

Lisbon Humberto Delgado

Thu 4/16

6:40 pm-7:00 pm

1 stop29h 20m

$631

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Fri 2/6

9:45 am-9:55 pm

3 stops31h 10m

Lisbon Humberto Delgado

Wed 2/11

6:15 am-8:54 pm

2 stops19h 39m

$632

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Wed 12/10

4:30 pm-6:30 pm

3 stops21h 00m

Lisbon Humberto Delgado

Wed 12/17

6:15 am-8:05 pm

2 stops18h 50m

$633

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Lisbon from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Lisbon

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 Lisbon?

In general, February is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $710. If you are unable to visit Lisbon during the month of February, then departing from Washington, D.C. Dulles Intl Airport during the month January is also very affordable. Most momondo users find prices during this month for around $719.

What is the cheapest day to depart on your flight to Lisbon?

Our data shows that Monday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $708. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. Dulles Intl Airport to Lisbon for around $885.

What is the cheapest time of day to depart on your flight to Lisbon?

The cheapest time of day to fly to Lisbon is in the afternoon when flights can be purchased for as low as $760. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $867 on average. Flights to Lisbon from Washington, D.C. Dulles Intl Airport at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Washington, D.C. Dulles Intl to Lisbon Humberto Delgado flight route?

Fly from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado for the best Washington, D.C. Dulles Intl - Lisbon Humberto Delgado flight prices

How far in advance should I book a flight to Lisbon?

You are more likely to see cheaper flights to Lisbon from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $906 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Washington, D.C. Dulles Intl Airport for as low as $733 on momondo.

What cabin class options are available on Washington, D.C. Dulles Intl to Lisbon Humberto Delgado flights?

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl to Lisbon Humberto Delgado 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 Washington, D.C. Dulles Intl Airport to Lisbon flights?

You could potentially save up to 12% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Lisbon flight.

How have Washington, D.C. Dulles Intl Airport to Lisbon flight prices changed over time?

As of November 2025, prices for Washington, D.C. Dulles Intl Airport to Lisbon flights are approximately 4% more expensive when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Lisbon according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Lisbon (IAD to LIS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Lisbon

Best Price Found

$290

Fastest flight time

7h 05m

Direct flights

Every day

Airports in Lisbon

1 airport
The best one-way flight to Lisbon from Washington, D.C. Dulles Intl Airport in the past 72 hours is $290. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Lisbon found on momondo in the last 72 hours is $486.
The fastest flight from Washington, D.C. Dulles Intl Airport to Lisbon takes 7h 05m
Direct flights go from Washington, D.C. Dulles Intl Airport to Lisbon every day.
There is 1 airport near Lisbon: Lisbon Humberto Delgado (LIS)
  • How far is Washington, D.C. Dulles Intl to Lisbon Humberto Delgado by plane?

    The straight-line distance from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado is 3581.5 mi. Typically, this will take 7h 05m by plane in normal conditions.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Lisbon Humberto Delgado Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Lisbon Humberto Delgado Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Lisbon Humberto Delgado Airport?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Lisbon Humberto Delgado Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Lisbon Humberto Delgado Airport.

  • What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

    The travel and health documents you'll need for your trip to Lisbon Humberto Delgado Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Washington, D.C. Dulles Intl Airport to Lisbon?

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to Lisbon?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Lisbon

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Lisbon with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $504Free CancellationRating
7.4
1,575 reviews
Search Scandinavian Airlines flights
American AirlinesPriceFrom $508Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
TAP AIR PORTUGALPriceFrom $508Free CancellationRating
7.1
2,059 reviews
Search TAP AIR PORTUGAL flights
British AirwaysPriceFrom $510Free CancellationRating
6.7
7,516 reviews
Search British Airways flights
Royal Air MarocPriceFrom $552Free CancellationRating
6.2
528 reviews
Search Royal Air Maroc flights
DeltaPriceFrom $563Free CancellationRating
7.9
8,007 reviews
Search Delta flights
Turkish AirlinesPriceFrom $585Free CancellationRating
7.3
4,044 reviews
Search Turkish Airlines flights
IberiaPriceFrom $592Free CancellationRating
7.0
3,010 reviews
Search Iberia flights
JetBluePriceFrom $707Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
LufthansaPriceFrom $741Free CancellationRating
6.8
7,570 reviews
Search Lufthansa flights
  • United Airlines Flights From Washington, D.C. Dulles Intl Airport to Lisbon

    The lowest priced United Airlines flight from Washington, D.C. Dulles Intl Airport to Lisbon from the last 72 hours was $745. Generally, United Airlines has 7 flights on this route every week with an average price of $1,175. United Airlines is rated 7.4/10 by our users.

  • JetBlue Flights From Washington, D.C. Dulles Intl Airport to Lisbon

    The best JetBlue deal for Washington, D.C. Dulles Intl Airport to Lisbon flight tickets found on momondo in the last 72 hours was $707, round-trip. It should be noted that an average JetBlue flight deal for this route in this time was higher, at $1,166 round-trip. JetBlue operates 7 flights out of Washington, D.C. Dulles Intl Airport into Lisbon in an average week, so prices vary by time and availability. 2,907 JetBlue reviews by users on momondo have scored the airline at 7.2/10.

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Sintra
Fátima
Ericeira
Nazaré
Oeiras
Setúbal
Peniche
Estoril
Leiria
Sesimbra
Tomar
Almada
Evora
Zambujeira do Mar
Figueira da Foz
Batalha
Óbidos
Torres Vedras
Comporta
Sines

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Lisbon?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Lisbon for you.

Can I find flights from Washington, D.C. to Lisbon with flexible booking policies on momondo?

Yes. All flights to Lisbon from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington, D.C. to Lisbon?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Lisbon.

I’m not ready to book a flight from Washington, D.C. to Lisbon right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Lisbon now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Lisbon and let you know when they change.

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1 adult
Sat 12/13
Sat 12/20

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