Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. to Lisbon from $276

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. to Lisbon departing on 10/5. 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.
Search flight deals

Find the cheapest flights from Washington, D.C. to Lisbon (WAS-LIS)

Cheap round-trip flights

PLAY Logo
6:50 pm - 8:20 pmBWI-LIS
20h 30m1 stop
PLAY Logo
9:25 pm - 5:40 pmLIS-BWI
25h 15m1 stop
$401PLAY
Find Deal
Thu, Sep 25 - Mon, Sep 29
PLAY Logo
6:50 pm - 8:20 pmBWI-LIS
20h 30m1 stop
PLAY Logo
9:20 pm - 5:40 pmLIS-BWI
25h 20m1 stop
$406PLAY
Find Deal
Sun, Oct 12 - Fri, Oct 17
PLAY Logo
6:50 pm - 8:20 pmBWI-LIS
20h 30m1 stop
PLAY Logo
9:25 pm - 5:40 pmLIS-BWI
25h 15m1 stop
$409PLAY
Find Deal
Thu, Sep 25 - Mon, Sep 29
Logo
4:35 pm - 10:20 amIAD-LIS
12h 45m1 stop
Logo
7:05 am - 3:00 pmLIS-IAD
12h 55m1 stop
$468
Find Deal
Tue, Oct 14 - Tue, Oct 21
Logo
9:45 am - 6:20 pmIAD-LIS
27h 35m2 stops
Logo
10:00 pm - 9:05 pmLIS-IAD
28h 05m3 stops
$475
Find Deal
Sun, Oct 5 - Mon, Oct 13
Scandinavian Airlines Logo
8:30 pm - 4:05 pmIAD-LIS
14h 35m1 stop
Scandinavian Airlines Logo
4:55 pm - 5:15 pmLIS-IAD
29h 20m1 stop
$495Scandinavian Airlines
Find Deal
Thu, Nov 13 - Wed, Nov 19
Scandinavian Airlines Logo
8:30 pm - 4:05 pmIAD-LIS
14h 35m1 stop
Scandinavian Airlines Logo
4:55 pm - 5:15 pmLIS-IAD
29h 20m1 stop
$505Scandinavian Airlines
Find Deal
Thu, Nov 27 - Sun, Dec 7
Aer Lingus Logo
9:00 pm - 9:35 pmIAD-LIS
19h 35m1 stop
Aer Lingus Logo
10:15 pm - 7:30 pmLIS-IAD
26h 15m1 stop
$561Aer Lingus
Find Deal
Tue, Sep 16 - Tue, Sep 23
Icelandair Logo
7:30 pm - 8:20 pmBWI-LIS
19h 50m1 stop
Icelandair Logo
9:20 pm - 6:30 pmLIS-BWI
26h 10m1 stop
$639Icelandair
Find Deal
Sat, Nov 8 - Thu, Nov 13
Icelandair Logo
7:30 pm - 8:20 pmBWI-LIS
19h 50m1 stop
Icelandair Logo
9:20 pm - 6:30 pmLIS-BWI
26h 10m1 stop
$659Icelandair
Find Deal
Sat, Nov 29 - Sun, Dec 7

Aer Lingus flights from Washington, D.C. to Lisbon

Our best Aer Lingus deals on Washington, D.C. to Lisbon flight tickets
Aer Lingus
Sep 16
IAD9:00 pmWashington, D.C. Dulles Intl
19h 35m
1 stop
LIS9:35 pmLisbon Humberto Delgado
Sep 23
LIS10:15 pmLisbon Humberto Delgado
26h 15m
1 stop
IAD7:30 pmWashington, D.C. Dulles Intl
$561
Find similar
Aer Lingus
Aug 18
IAD8:25 pmWashington, D.C. Dulles Intl
20h 10m
1 stop
LIS9:35 pmLisbon Humberto Delgado
Aug 27
LIS10:15 pmLisbon Humberto Delgado
25h 40m
1 stop
IAD6:55 pmWashington, D.C. Dulles Intl
$835
Find similar
Aer Lingus
Aug 11
IAD8:25 pmWashington, D.C. Dulles Intl
20h 10m
1 stop
LIS9:35 pmLisbon Humberto Delgado
Aug 20
LIS10:15 pmLisbon Humberto Delgado
25h 40m
1 stop
IAD6:55 pmWashington, D.C. Dulles Intl
$908
Find similar

Scandinavian Airlines flights from Washington, D.C. to Lisbon

Our best Scandinavian Airlines deals on Washington, D.C. to Lisbon flight tickets
Scandinavian Airlines
Nov 13
IAD8:30 pmWashington, D.C. Dulles Intl
14h 35m
1 stop
LIS4:05 pmLisbon Humberto Delgado
Nov 19
LIS4:55 pmLisbon Humberto Delgado
29h 20m
1 stop
IAD5:15 pmWashington, D.C. Dulles Intl
$495
Find similar
Scandinavian Airlines
Nov 27
IAD8:30 pmWashington, D.C. Dulles Intl
14h 35m
1 stop
LIS4:05 pmLisbon Humberto Delgado
Dec 7
LIS4:55 pmLisbon Humberto Delgado
29h 20m
1 stop
IAD5:15 pmWashington, D.C. Dulles Intl
$505
Find similar
Scandinavian Airlines
Jan 29
IAD8:30 pmWashington, D.C. Dulles Intl
14h 35m
1 stop
LIS4:05 pmLisbon Humberto Delgado
Feb 4
LIS4:55 pmLisbon Humberto Delgado
29h 20m
1 stop
IAD5:15 pmWashington, D.C. Dulles Intl
$517
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 5, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreLisbon

BWI - LIS

BWILIS

Baltimore/Washington

Thu 9/25

6:50 pm-8:20 pm

1 stop20h 30m

Lisbon Humberto Delgado

Mon 9/29

9:25 pm-5:40 pm

1 stop25h 15m

$401

BaltimoreLisbon

BWI - LIS

BWILIS

Baltimore/Washington

Sun 10/12

6:50 pm-8:20 pm

1 stop20h 30m

Lisbon Humberto Delgado

Fri 10/17

9:20 pm-5:40 pm

1 stop25h 20m

$406

BaltimoreLisbon

BWI - LIS

BWILIS

Baltimore/Washington

Thu 9/25

6:50 pm-8:20 pm

1 stop20h 30m

Lisbon Humberto Delgado

Mon 9/29

9:25 pm-5:40 pm

1 stop25h 15m

$409

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 10/14

4:35 pm-10:20 am

1 stop12h 45m

Lisbon Humberto Delgado

Tue 10/21

7:05 am-3:00 pm

1 stop12h 55m

$468

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Sun 10/5

9:45 am-6:20 pm

2 stops27h 35m

Lisbon Humberto Delgado

Mon 10/13

10:00 pm-9:05 pm

3 stops28h 05m

$475

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Thu 11/13

8:30 pm-4:05 pm

1 stop14h 35m

Lisbon Humberto Delgado

Wed 11/19

4:55 pm-5:15 pm

1 stop29h 20m

$495

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Thu 11/27

8:30 pm-4:05 pm

1 stop14h 35m

Lisbon Humberto Delgado

Sun 12/7

4:55 pm-5:15 pm

1 stop29h 20m

$505

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 9/16

9:00 pm-9:35 pm

1 stop19h 35m

Lisbon Humberto Delgado

Tue 9/23

10:15 pm-7:30 pm

1 stop26h 15m

$561

BaltimoreLisbon

BWI - LIS

BWILIS

Baltimore/Washington

Sat 11/8

7:30 pm-8:20 pm

1 stop19h 50m

Lisbon Humberto Delgado

Thu 11/13

9:20 pm-6:30 pm

1 stop26h 10m

$639

BaltimoreLisbon

BWI - LIS

BWILIS

Baltimore/Washington

Sat 11/29

7:30 pm-8:20 pm

1 stop19h 50m

Lisbon Humberto Delgado

Sun 12/7

9:20 pm-6:30 pm

1 stop26h 10m

$659

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. 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. to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $670. If you are unable to visit Lisbon during the month of February, then departing from Washington, D.C. during the month January is also very affordable. Most momondo users find prices during this month for around $702.

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 $748. 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. to Lisbon for around $910.

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 morning 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. at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Fly from Washington, D.C. Dulles Intl to Lisbon Humberto Delgado for the best Washington, D.C. - 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. when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $935 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. for as low as $669 on momondo.

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

There are 3 cabin classes available to choose from on Washington, D.C. 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. to Lisbon flights?

No. A direct flight is the cheapest option for a flight between Washington, D.C. to Lisbon.

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

As of August 2025, prices for Washington, D.C. to Lisbon flights are approximately 30% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. 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. to Lisbon (WAS to LIS) flight deals and tips

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

Best Price Found

$276

Fastest flight time

7h 20m

Direct flights

Every day

Airports in Lisbon

1 airport
The best one-way flight to Lisbon from Washington, D.C. in the past 72 hours is $276. The best round-trip flight deal from Washington, D.C. to Lisbon found on momondo in the last 72 hours is $401.
The fastest flight from Washington, D.C. to Lisbon takes 7h 20m
Direct flights go from Washington, D.C. to Lisbon every day.
There is 1 airport near Lisbon: Lisbon Humberto Delgado (LIS)
Search flight deals

  • How far is Washington, D.C. to Lisbon Humberto Delgado by plane?

    There are 3562.1 mi between Washington, D.C. and Lisbon Humberto Delgado. 11h 45m is a normal flight duration for this route.

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

    Prices for flights from Washington, D.C. to Lisbon Humberto Delgado Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. to Lisbon Humberto Delgado Airport.

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

    The required travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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

Best airlines flying from Washington, D.C. to Lisbon

Compare and see reviews for airlines that fly from Washington, D.C. to Lisbon with momondo
Airline
Rating
Free Cancellation
Price
PLAYPriceFrom $333Free CancellationRating
7.0
102 reviews
Search PLAY flights
TAP AIR PORTUGALPriceFrom $506Free CancellationRating
7.1
1,942 reviews
Search TAP AIR PORTUGAL flights
American AirlinesPriceFrom $508Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $510Free CancellationRating
6.6
7,235 reviews
Search British Airways flights
KLMPriceFrom $534Free CancellationRating
7.8
1,381 reviews
Search KLM flights
Royal Air MarocPriceFrom $552Free CancellationRating
6.1
495 reviews
Search Royal Air Maroc flights
Air FrancePriceFrom $554Free CancellationRating
7.5
1,466 reviews
Search Air France flights
DeltaPriceFrom $563Free CancellationRating
8.0
7,987 reviews
Search Delta flights
Turkish AirlinesPriceFrom $586Free CancellationRating
7.3
3,935 reviews
Search Turkish Airlines flights
IberiaPriceFrom $592Free CancellationRating
7.0
2,865 reviews
Search Iberia flights

  • United Airlines Flights From Washington, D.C. to Lisbon

    United Airlines flight deals from Washington, D.C. to Lisbon start from $700 round-trip. Over the 5 United Airlines flights for this route in a normal week, average airfare is usually $1,234 round-trip - but some users have found much cheaper deals with momondo.

  • JetBlue Flights From Washington, D.C. to Lisbon

    Across 2,914 JetBlue reviews on momondo, the average score is 7.2/10. JetBlue flies from Washington, D.C. to Lisbon about 11 times each week, with ticket deals ranging from $707 to $1,166. Price data is based on momondo searches in the last 72 hours.

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
Peniche
Evora
Estoril
Sesimbra
Leiria
Figueira da Foz
Tomar
Óbidos
Batalha
Comporta
Torres Vedras
Costa da Caparica
Sines

Why use momondo?

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

Finding the right flight to Lisbon from Washington, D.C. 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 Lisbon quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Washington, D.C. to Lisbon flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Lisbon from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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 simply researching potential flights to Lisbon, momondo offers a useful price alert feature which will track prices for flights to Lisbon from Washington, D.C. and alert you 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 8/10
Sun 8/17
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal