Cheap flights from Washington, D.C. Dulles Intl Airport to Lisbon from $342

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 11/23. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

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.
Scandinavian Airlines Logo
7:59 pm - 4:05 pmIAD-LIS
39h 06m2 stops
Scandinavian Airlines Logo
4:55 pm - 7:19 pmLIS-IAD
31h 24m2 stops
$544Scandinavian Airlines
Find Deal
Wed, Dec 3 - Mon, Dec 8
Scandinavian Airlines Logo
7:49 pm - 4:05 pmIAD-LIS
39h 16m2 stops
Scandinavian Airlines Logo
8:05 am - 5:15 pmLIS-IAD
38h 10m2 stops
$546Scandinavian Airlines
Find Deal
Mon, Jan 19 - Tue, Feb 10
Multiple Airlines Logo
7:49 pm - 4:05 pmIAD-LIS
39h 16m2 stops
Multiple Airlines Logo
7:05 am - 5:15 pmLIS-IAD
15h 10m1 stop
$547Multiple Airlines
Find Deal
Mon, Jan 12 - Wed, Jan 21
Scandinavian Airlines Logo
12:19 pm - 4:05 pmIAD-LIS
22h 46m2 stops
Scandinavian Airlines Logo
4:55 pm - 5:15 pmLIS-IAD
29h 20m1 stop
$548Scandinavian Airlines
Find Deal
Tue, Dec 9 - Sun, Dec 14
Scandinavian Airlines Logo
8:30 pm - 4:05 pmIAD-LIS
14h 35m1 stop
Scandinavian Airlines Logo
6:10 pm - 7:09 pmLIS-IAD
29h 59m2 stops
$550Scandinavian Airlines
Find Deal
Sat, Jan 17 - Mon, Jan 26
Multiple Airlines Logo
7:40 pm - 9:10 pmIAD-LIS
20h 30m2 stops
Multiple Airlines Logo
8:55 pm - 6:30 pmLIS-IAD
26h 35m2 stops
$551Multiple Airlines
Find Deal
Fri, Jan 16 - Tue, Jan 20
Turkish Airlines Logo
9:15 pm - 10:00 amIAD-LIS
31h 45m1 stop
Turkish Airlines Logo
4:05 pm - 11:45 amLIS-IAD
24h 40m1 stop
$561Turkish Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 18
Turkish Airlines Logo
1:30 pm - 10:40 amIAD-LIS
16h 10m1 stop
Turkish Airlines Logo
4:05 pm - 11:45 amLIS-IAD
24h 40m1 stop
$570Turkish Airlines
Find Deal
Tue, Nov 4 - Tue, Nov 11
Royal Air Maroc Logo
8:45 pm - 4:55 pmIAD-LIS
15h 10m1 stop
Royal Air Maroc Logo
11:35 am - 6:45 pmLIS-IAD
12h 10m1 stop
$595Royal Air Maroc
Find Deal
Fri, Nov 28 - Wed, Dec 3
Royal Air Maroc Logo
8:45 pm - 11:35 amIAD-LIS
9h 50m1 stop
Royal Air Maroc Logo
12:30 pm - 6:45 pmLIS-IAD
11h 15m1 stop
$602Royal Air Maroc
Find Deal
Sun, Jan 18 - Fri, Jan 23

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
Nov 11
IAD9:15 pmWashington, D.C. Dulles Intl
31h 45m
1 stop
LIS10:00 amLisbon Humberto Delgado
Nov 18
LIS4:05 pmLisbon Humberto Delgado
24h 40m
1 stop
IAD11:45 amWashington, D.C. Dulles Intl
Turkish Airlines
Nov 4
IAD1:30 pmWashington, D.C. Dulles Intl
16h 10m
1 stop
LIS10:40 amLisbon Humberto Delgado
Nov 11
LIS4:05 pmLisbon Humberto Delgado
24h 40m
1 stop
IAD11:45 amWashington, D.C. Dulles Intl
Turkish Airlines
Jan 15
IAD1:30 pmWashington, D.C. Dulles Intl
20h 35m
1 stop
LIS3:05 pmLisbon Humberto Delgado
Jan 29
LIS6:00 amLisbon Humberto Delgado
18h 20m
1 stop
IAD7:20 pmWashington, D.C. Dulles Intl

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

Our best Scandinavian Airlines deals on Washington, D.C. Dulles Intl Airport to Lisbon flight tickets
Scandinavian Airlines
Dec 3
IAD7:59 pmWashington, D.C. Dulles Intl
39h 06m
2 stops
LIS4:05 pmLisbon Humberto Delgado
Dec 8
LIS4:55 pmLisbon Humberto Delgado
31h 24m
2 stops
IAD7:19 pmWashington, D.C. Dulles Intl
Scandinavian Airlines
Jan 19
IAD7:49 pmWashington, D.C. Dulles Intl
39h 16m
2 stops
LIS4:05 pmLisbon Humberto Delgado
Feb 10
LIS8:05 amLisbon Humberto Delgado
38h 10m
2 stops
IAD5:15 pmWashington, D.C. Dulles Intl
Scandinavian Airlines
Dec 9
IAD12:19 pmWashington, D.C. Dulles Intl
22h 46m
2 stops
LIS4:05 pmLisbon Humberto Delgado
Dec 14
LIS4:55 pmLisbon Humberto Delgado
29h 20m
1 stop
IAD5:15 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 October 29, 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

Wed 12/3

7:59 pm-4:05 pm

2 stops39h 06m

Lisbon Humberto Delgado

Mon 12/8

4:55 pm-7:19 pm

2 stops31h 24m

$544

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 1/19

7:49 pm-4:05 pm

2 stops39h 16m

Lisbon Humberto Delgado

Tue 2/10

8:05 am-5:15 pm

2 stops38h 10m

$546

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Mon 1/12

7:49 pm-4:05 pm

2 stops39h 16m

Lisbon Humberto Delgado

Wed 1/21

7:05 am-5:15 pm

1 stop15h 10m

$547

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 12/9

12:19 pm-4:05 pm

2 stops22h 46m

Lisbon Humberto Delgado

Sun 12/14

4:55 pm-5:15 pm

1 stop29h 20m

$548

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sat 1/17

8:30 pm-4:05 pm

1 stop14h 35m

Lisbon Humberto Delgado

Mon 1/26

6:10 pm-7:09 pm

2 stops29h 59m

$550

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Fri 1/16

7:40 pm-9:10 pm

2 stops20h 30m

Lisbon Humberto Delgado

Tue 1/20

8:55 pm-6:30 pm

2 stops26h 35m

$551

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 11/11

9:15 pm-10:00 am

1 stop31h 45m

Lisbon Humberto Delgado

Tue 11/18

4:05 pm-11:45 am

1 stop24h 40m

$561

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 11/4

1:30 pm-10:40 am

1 stop16h 10m

Lisbon Humberto Delgado

Tue 11/11

4:05 pm-11:45 am

1 stop24h 40m

$570

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Fri 11/28

8:45 pm-4:55 pm

1 stop15h 10m

Lisbon Humberto Delgado

Wed 12/3

11:35 am-6:45 pm

1 stop12h 10m

$595

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sun 1/18

8:45 pm-11:35 am

1 stop9h 50m

Lisbon Humberto Delgado

Fri 1/23

12:30 pm-6:45 pm

1 stop11h 15m

$602

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $716. 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 $711. 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 $883.

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 $761. 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 $911 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 $730 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 10% 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 October 2025, prices for Washington, D.C. Dulles Intl Airport to Lisbon flights are approximately 24% 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

$289

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 $289. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Lisbon found on momondo in the last 72 hours is $471.
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 9h 50m 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
1,543 reviews
Search Scandinavian Airlines flights
American AirlinesPriceFrom $508Free CancellationRating
7.2
11,032 reviews
Search American Airlines flights
TAP AIR PORTUGALPriceFrom $509Free CancellationRating
7.1
2,035 reviews
Search TAP AIR PORTUGAL flights
British AirwaysPriceFrom $510Free CancellationRating
6.7
7,483 reviews
Search British Airways flights
Royal Air MarocPriceFrom $552Free CancellationRating
6.2
525 reviews
Search Royal Air Maroc flights
DeltaPriceFrom $563Free CancellationRating
7.9
7,994 reviews
Search Delta flights
Turkish AirlinesPriceFrom $586Free CancellationRating
7.3
4,031 reviews
Search Turkish Airlines flights
IberiaPriceFrom $592Free CancellationRating
7.0
3,001 reviews
Search Iberia flights
JetBluePriceFrom $707Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
Aer LingusPriceFrom $737Free CancellationRating
7.2
1,361 reviews
Search Aer Lingus 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 $746. Generally, United Airlines has 6 flights on this route every week with an average price of $1,168. 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 $1,148 round-trip. JetBlue operates 6 flights out of Washington, D.C. Dulles Intl Airport into Lisbon in an average week, so prices vary by time and availability. 2,906 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
Batalha
Figueira da Foz
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.

An easier way to manage your Lisbon trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 11/28
Fri 12/5

Find better results for your trip to Portugal