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Cheap flights from Washington, D.C. Dulles Intl Airport to Lisbon from $335

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 10/16. 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 Washington, D.C. Dulles Intl Airport to Lisbon (IAD-LIS)

Cheap round-trip flights

Turkish Airlines Logo
9:40 pm - 11:35 pmIAD-LIS
20h 55m1 stop
Turkish Airlines Logo
4:05 pm - 12:45 pmLIS-IAD
24h 40m1 stop
$645Turkish Airlines
Find Deal
Sun, Oct 5 - Sun, Oct 26
Turkish Airlines Logo
1:30 pm - 3:30 pmIAD-LIS
21h 00m1 stop
Turkish Airlines Logo
4:30 pm - 11:45 amLIS-IAD
24h 15m1 stop
$646Turkish Airlines
Find Deal
Thu, Oct 9 - Mon, Oct 13
Logo
8:30 pm - 4:05 pmIAD-LIS
14h 35m1 stop
Logo
7:05 am - 7:08 pmLIS-IAD
17h 03m2 stops
$649
Find Deal
Sat, Nov 8 - Wed, Nov 12
Royal Air Maroc Logo
9:05 pm - 5:40 pmIAD-LIS
15h 35m1 stop
Royal Air Maroc Logo
5:55 pm - 6:45 pmLIS-IAD
29h 50m1 stop
$651Royal Air Maroc
Find Deal
Mon, Oct 20 - Tue, Nov 4
Royal Air Maroc Logo
9:05 pm - 5:40 pmIAD-LIS
15h 35m1 stop
Royal Air Maroc Logo
5:55 pm - 7:45 pmLIS-IAD
29h 50m1 stop
$653Royal Air Maroc
Find Deal
Mon, Oct 20 - Tue, Oct 28
Logo
10:05 pm - 3:40 pmIAD-LIS
12h 35m1 stop
Logo
8:00 am - 7:59 pmLIS-IAD
16h 59m2 stops
$654
Find Deal
Thu, Oct 16 - Wed, Oct 22
TAP AIR PORTUGAL Logo
10:35 pm - 10:55 amIAD-LIS
7h 20mnonstop
TAP AIR PORTUGAL Logo
12:00 pm - 3:20 pmLIS-IAD
8h 20mnonstop
$674TAP AIR PORTUGAL
Find Deal
Sat, Sep 13 - Fri, Sep 19
Scandinavian Airlines Logo
8:30 pm - 9:30 pmIAD-LIS
20h 00m1 stop
Scandinavian Airlines Logo
4:55 pm - 5:15 pmLIS-IAD
29h 20m1 stop
$678Scandinavian Airlines
Find Deal
Mon, Nov 3 - Sun, Nov 16
Scandinavian Airlines Logo
10:05 pm - 10:05 pmIAD-LIS
43h 00m2 stops
Scandinavian Airlines Logo
3:45 pm - 11:57 amLIS-IAD
49h 12m2 stops
$684Scandinavian Airlines
Find Deal
Fri, Oct 17 - Mon, Nov 3
TAP AIR PORTUGAL Logo
5:00 pm - 5:20 amIAD-LIS
7h 20mnonstop
TAP AIR PORTUGAL Logo
5:10 pm - 9:00 pmLIS-IAD
8h 50mnonstop
$694TAP AIR PORTUGAL
Find Deal
Tue, Oct 21 - Fri, Nov 7

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

Our best Turkish Airlines deals on Washington, D.C. Dulles Intl Airport to Lisbon flight tickets
Turkish Airlines
Oct 5
IAD9:40 pmWashington, D.C. Dulles Intl
20h 55m
1 stop
LIS11:35 pmLisbon Humberto Delgado
Oct 26
LIS4:05 pmLisbon Humberto Delgado
24h 40m
1 stop
IAD12:45 pmWashington, D.C. Dulles Intl
$645
Find similar
Turkish Airlines
Oct 9
IAD1:30 pmWashington, D.C. Dulles Intl
21h 00m
1 stop
LIS3:30 pmLisbon Humberto Delgado
Oct 13
LIS4:30 pmLisbon Humberto Delgado
24h 15m
1 stop
IAD11:45 amWashington, D.C. Dulles Intl
$646
Find similar
Turkish Airlines
Oct 5
IAD1:30 pmWashington, D.C. Dulles Intl
21h 00m
1 stop
LIS3:30 pmLisbon Humberto Delgado
Oct 15
LIS10:55 amLisbon Humberto Delgado
29h 50m
1 stop
IAD11:45 amWashington, D.C. Dulles Intl
$647
Find similar

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
Sep 13
IAD10:35 pmWashington, D.C. Dulles Intl
7h 20m
LIS10:55 amLisbon Humberto Delgado
Sep 19
LIS12:00 pmLisbon Humberto Delgado
8h 20m
IAD3:20 pmWashington, D.C. Dulles Intl
$674
Find similar
TAP AIR PORTUGAL
Oct 21
IAD5:00 pmWashington, D.C. Dulles Intl
7h 20m
LIS5:20 amLisbon Humberto Delgado
Nov 7
LIS5:10 pmLisbon Humberto Delgado
8h 50m
IAD9:00 pmWashington, D.C. Dulles Intl
$694
Find similar
TAP AIR PORTUGAL
Sep 2
IAD5:00 pmWashington, D.C. Dulles Intl
7h 20m
LIS5:20 amLisbon Humberto Delgado
Sep 16
LIS12:00 pmLisbon Humberto Delgado
8h 20m
IAD3:20 pmWashington, D.C. Dulles Intl
$820
Find similar

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 August 28, 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

Sun 10/5

9:40 pm-11:35 pm

1 stop20h 55m

Lisbon Humberto Delgado

Sun 10/26

4:05 pm-12:45 pm

1 stop24h 40m

$645

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Thu 10/9

1:30 pm-3:30 pm

1 stop21h 00m

Lisbon Humberto Delgado

Mon 10/13

4:30 pm-11:45 am

1 stop24h 15m

$646

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sat 11/8

8:30 pm-4:05 pm

1 stop14h 35m

Lisbon Humberto Delgado

Wed 11/12

7:05 am-7:08 pm

2 stops17h 03m

$649

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 10/20

9:05 pm-5:40 pm

1 stop15h 35m

Lisbon Humberto Delgado

Tue 11/4

5:55 pm-6:45 pm

1 stop29h 50m

$651

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 10/20

9:05 pm-5:40 pm

1 stop15h 35m

Lisbon Humberto Delgado

Tue 10/28

5:55 pm-7:45 pm

1 stop29h 50m

$653

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Thu 10/16

10:05 pm-3:40 pm

1 stop12h 35m

Lisbon Humberto Delgado

Wed 10/22

8:00 am-7:59 pm

2 stops16h 59m

$654

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sat 9/13

10:35 pm-10:55 am

Nonstop7h 20m

Lisbon Humberto Delgado

Fri 9/19

12:00 pm-3:20 pm

Nonstop8h 20m

$674

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 11/3

8:30 pm-9:30 pm

1 stop20h 00m

Lisbon Humberto Delgado

Sun 11/16

4:55 pm-5:15 pm

1 stop29h 20m

$678

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Fri 10/17

10:05 pm-10:05 pm

2 stops43h 00m

Lisbon Humberto Delgado

Mon 11/3

3:45 pm-11:57 am

2 stops49h 12m

$684

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 10/21

5:00 pm-5:20 am

Nonstop7h 20m

Lisbon Humberto Delgado

Fri 11/7

5:10 pm-9:00 pm

Nonstop8h 50m

$694

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 $658. 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 $710.

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 $740. 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 $906.

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 $775. 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 $902 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 $748 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 3% 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 August 2025, prices for Washington, D.C. Dulles Intl Airport to Lisbon flights are approximately 22% cheaper 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

$294

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 $294. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Lisbon found on momondo in the last 72 hours is $523.
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)
Search flight deals

  • 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 20m 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
PLAYPriceFrom $338Free CancellationRating
7.0
103 reviews
Search PLAY flights
British AirwaysPriceFrom $480Free CancellationRating
6.7
7,316 reviews
Search British Airways flights
TAP AIR PORTUGALPriceFrom $505Free CancellationRating
7.1
1,963 reviews
Search TAP AIR PORTUGAL flights
American AirlinesPriceFrom $508Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Royal Air MarocPriceFrom $552Free CancellationRating
6.1
505 reviews
Search Royal Air Maroc flights
DeltaPriceFrom $563Free CancellationRating
7.9
7,977 reviews
Search Delta flights
Turkish AirlinesPriceFrom $586Free CancellationRating
7.3
3,955 reviews
Search Turkish Airlines flights
IberiaPriceFrom $592Free CancellationRating
7.0
2,892 reviews
Search Iberia flights
Aer LingusPriceFrom $666Free CancellationRating
7.2
1,239 reviews
Search Aer Lingus flights
LufthansaPriceFrom $672Free CancellationRating
6.8
7,368 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 $718. Generally, United Airlines has 5 flights on this route every week with an average price of $1,134. 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 8 flights out of Washington, D.C. Dulles Intl Airport into Lisbon in an average week, so prices vary by time and availability. 2,920 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
Nazaré
Ericeira
Setúbal
Oeiras
Almada
Tomar
Peniche
Evora
Estoril
Sesimbra
Leiria
Figueira da Foz
Zambujeira do Mar
Torres Vedras
Batalha
Óbidos
Comporta
Costa da Caparica

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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