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$242+ Cheap flights from Washington, D.C. (WAS) to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LIS
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Portugal

Cheapest flights from Washington, D.C. to Portugal
Explore the most affordable flight options available from Washington, D.C. to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.

This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/810:30 pm
IAD
-
OPO
1 stop15h 30m
TAP AIR PORTUGAL
Sat 2/148:55 am
OPO
-
IAD
1 stop11h 20m
TAP AIR PORTUGAL
Deal found 1/26$371
This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:30 pm
IAD
-
OPO
1 stop16h 30m
TAP AIR PORTUGAL
Tue 3/36:55 am
OPO
-
IAD
1 stop12h 40m
TAP AIR PORTUGAL
Deal found 1/27$372
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1810:30 pm
IAD
-
OPO
1 stop15h 30m
TAP AIR PORTUGAL
Tue 2/2410:15 pm
OPO
-
IAD
1 stop27h 45m
TAP AIR PORTUGAL
Deal found 1/26$378
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/811:30 pm
IAD
-
OPO
1 stop11h 50m
TAP AIR PORTUGAL
Wed 3/2510:00 am
OPO
-
IAD
1 stop16h 00m
TAP AIR PORTUGAL
Deal found 1/27$398
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/166:30 pm
IAD
-
OPO
1 stop11h 30m
TAP AIR PORTUGAL
Thu 3/267:00 am
OPO
-
IAD
1 stop13h 15m
TAP AIR PORTUGAL
Deal found 1/27$399
This TAP AIR PORTUGAL deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/106:30 pm
IAD
-
FAO
1 stop25h 20m
TAP AIR PORTUGAL
Tue 3/176:05 am
FAO
-
IAD
1 stop13h 30m
TAP AIR PORTUGAL
Deal found 1/25$399
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1511:30 pm
IAD
-
OPO
1 stop28h 30m
TAP AIR PORTUGAL
Mon 3/238:00 pm
OPO
-
IAD
1 stop23h 35m
TAP AIR PORTUGAL
Deal found 1/26$403
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/166:30 pm
IAD
-
OPO
1 stop11h 30m
TAP AIR PORTUGAL
Wed 3/252:00 pm
OPO
-
IAD
1 stop12h 00m
TAP AIR PORTUGAL
Deal found 1/28$404
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/175:30 pm
IAD
-
OPO
1 stop14h 40m
TAP AIR PORTUGAL
Mon 2/234:10 pm
OPO
-
IAD
1 stop27h 25m
TAP AIR PORTUGAL
Deal found 1/26$425
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1810:30 pm
IAD
-
PDL
1 stop16h 05m
TAP AIR PORTUGAL
Wed 2/256:35 am
PDL
-
IAD
1 stop18h 25m
TAP AIR PORTUGAL
Deal found 1/26$471
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2510:30 pm
IAD
-
FNC
1 stop21h 30m
TAP AIR PORTUGAL
Wed 3/46:10 pm
FNC
-
IAD
1 stop26h 05m
TAP AIR PORTUGAL
Deal found 1/26$472
This oojo deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1310:35 pm
IAD
-
PDL
1 stop12h 00m
TAP AIR PORTUGAL
Mon 4/203:50 pm
PDL
-
IAD
1 stop27h 15m
TAP AIR PORTUGAL
Deal found 1/27$472

Find flight deals from Washington, D.C. to Portugal

Keep the following information in mind while searching for Washington, D.C. to Portugal flight deals. Data was last updated January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$371
(oojo)

One-way from

$242
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$730

Good round-trip deal

$541 or less

Good one-way deal

$390 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Lisbon Humberto Delgado flights.
Search Deals
From Washington, D.C. (WAS) to Portugal
Search Deals
One-way flight from Washington, D.C. (WAS) to Portugal
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($164 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Portugal.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to Portugal.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Portugal 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, Cheapflights users made 2,558,603 searches. Data last updated January 28, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Portugal that are best for you.

Fly from

Washington, D.C.

Fly to

Portugal

Route

Depart

Return

Price

Washington, D.C.Faro

IAD - FAO

IADFAO

Washington, D.C. Dulles Intl

Tue 3/10

6:30 pm-11:50 pm

1 stop25h 20m

Faro

Tue 3/17

6:05 am-3:35 pm

1 stop13h 30m

$399

Washington, D.C.Funchal

IAD - FNC

IADFNC

Washington, D.C. Dulles Intl

Wed 2/25

10:30 pm-1:00 am

1 stop21h 30m

Funchal Madeira

Wed 3/4

6:10 pm-3:15 pm

1 stop26h 05m

$472

Washington, D.C.Funchal

IAD - FNC

IADFNC

Washington, D.C. Dulles Intl

Thu 4/23

10:35 pm-6:30 pm

1 stop14h 55m

Funchal Madeira

Tue 4/28

5:50 am-3:05 pm

1 stop14h 15m

$472

Washington, D.C.Ponta Delgada

IAD - PDL

IADPDL

Washington, D.C. Dulles Intl

Thu 4/23

10:35 pm-6:50 pm

1 stop16h 15m

Ponta Delgada Nordela

Thu 4/30

7:40 pm-3:05 pm

1 stop23h 25m

$472

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Tue 4/21

10:25 pm-11:00 pm

1 stop19h 35m

Lisbon Humberto Delgado

Sat 5/2

7:10 am-3:50 pm

1 stop13h 40m

$549

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Thu 4/16

10:25 pm-10:05 am

1 stop30h 40m

Lisbon Humberto Delgado

Sun 5/3

5:10 pm-8:20 pm

1 stop32h 10m

$549

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Thu 4/16

7:15 pm-10:05 am

1 stop33h 50m

Lisbon Humberto Delgado

Thu 4/30

11:05 am-8:20 pm

1 stop14h 15m

$549

Washington, D.C.Lisbon

IAD - LIS

IADLIS

Washington, D.C. Dulles Intl

Thu 4/16

10:25 pm-10:05 am

1 stop30h 40m

Lisbon Humberto Delgado

Sun 4/19

6:50 pm-8:20 pm

1 stop30h 30m

$551

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 3/11

7:00 pm-3:25 pm

1 stop16h 25m

Porto

Tue 3/24

6:00 am-4:50 pm

1 stop14h 50m

$570

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 3/9

5:35 pm-9:30 am

1 stop11h 55m

Porto

Fri 3/20

6:00 am-4:50 pm

1 stop14h 50m

$572

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 60 results
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Best time to book a flight from Washington, D.C. to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Washington, D.C. with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Portugal

What is the cheapest month to book a flight from Washington, D.C. to Portugal?

Currently, July is the cheapest month in which you can book a flight from Washington, D.C. to Portugal (average of $345). Flying from Washington, D.C. to Portugal in September is currently the most expensive (average of $529). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WAS to PT?

Find hourly flight availability from Washington, D.C. to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 28, 2026.

When flying from Washington, D.C. to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How often are flights from Washington, D.C. to Portugal delayed?

About 28% of weekly flights between Washington, D.C. and Portugal have experienced delays in the past year, with the average delay time being 145 minutes.

What is the most punctual flight time for Washington, D.C. to Portugal flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to Portugal flights?

Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 26% of flights being delayed.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated January 28, 2026.
Read reviews from past customers who have flown United Airlines, Aer Lingus, and TAP AIR PORTUGAL from Washington, D.C. to Portugal. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,213 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,213 reviews
United Airlines
7.4
Good
9,213 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.2
Good
1,442 reviews
United Airlines
7.4
Good
9,213 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
TAP AIR PORTUGAL
7.1
Good
2,130 reviews
United Airlines
7.4
Good
9,213 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Lufthansa
6.8
Okay
7,752 reviews
United Airlines
7.4
Good
9,213 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Royal Air Maroc
6.2
Okay
572 reviews
United Airlines
7.4
Good
9,213 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. to Portugal?

    TAP AIR PORTUGAL, British Airways, and Lufthansa can get you from Washington, D.C. to Portugal in just under 16h 25m. Your travel time can differ by up to 8h 55m. Washington, D.C. and Portugal are separated by a distance of 3537 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Washington, D.C. to Portugal one-way?

    One-way options have recently been found by users for as low as $251 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include Royal Air Maroc from $338 and KLM from $384 one-way.

  • What are the most popular routes from Washington, D.C. to Portugal?

    While some choose either Washington, D.C. Reagan-National - Lisbon Humberto Delgado or Baltimore/Washington - Lisbon Humberto Delgado, Washington, D.C. Dulles Intl - Lisbon Humberto Delgado is the most popular route from Washington, D.C. to Portugal.

  • What are the most reliable airlines from Washington, D.C. to Portugal?

    The top 3 most reliable airlines when flying from Washington, D.C. to Portugal are JetBlue (75%), TAP AIR PORTUGAL (75%) and Air Canada (72%).

  • What are the cheapest flights from Washington, D.C. to Portugal?

    Looking for the cheapest flight from Washington, D.C. to Portugal? While on average our users pay $1,459, our data indicates the cheapest price to be $292. The most popular route (Washington, D.C. Dulles Intl - Lisbon Humberto Delgado), is priced around $370.

  • Can I find deals for flights from Washington, D.C. to Portugal that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Portugal.

  • Can I find deals for business class flights from Washington, D.C. to Portugal?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. to Portugal?

    Currently, July is the cheapest month in which you can book a flight from Washington, D.C. to Portugal (average of $345). Flying from Washington, D.C. to Portugal in September is currently the most expensive (average of $529). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Washington, D.C. to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
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Top 10 airlines flying from Washington, D.C. to Portugal

Discover the top 10 airlines that operate flights from Washington, D.C. to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$344Average$414FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$439Average$881FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$443Average$908FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$444Average$681FlexibilityNo cancel feeOn-time79%
KLMCheapest$477Average$731FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$480Average$878FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$481Average$599FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$494Average$1,069FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$508Average$1,022FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$514Average$951FlexibilityNo cancel feeOn-time76%

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