HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$286+ Cheap flights from District of Columbia 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — LIS
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from District of Columbia to Portugal with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from District of Columbia to Portugal

Cheapest flights from District of Columbia to Portugal
Explore the most affordable flight options available from District of Columbia to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 30, 2025.

This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/195:25 pmIAD - OPO
1 stop12h 50mMultiple Airlines
mar. 12/1612:30 pmOPO - IAD
2 stops15h 51mMultiple Airlines
Deal found 10/28$488
This Delta deal was found by Cheapflights users on 10/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/1112:36 pmIAD - OPO
2 stops16h 54mDelta
mar. 11/1811:15 amOPO - IAD
2 stops18h 01mDelta
Deal found 10/27$492
This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/311:13 amDCA - OPO
2 stops18h 17mDelta
mié. 12/106:00 amOPO - DCA
2 stops21h 57mDelta
Deal found 10/30$492
This FlightHub deal was found by Cheapflights users on 10/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/39:45 amIAD - OPO
2 stops22h 30mAir Canada
lun. 12/86:00 amOPO - IAD
2 stops43h 59mAir Canada
Deal found 10/30$495
This FlightHub deal was found by Cheapflights users on 10/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/36:00 amDCA - OPO
2 stops26h 15mAir Canada
lun. 12/86:00 amOPO - DCA
2 stops57h 21mAir Canada
Deal found 10/30$495
This United deal was found by Cheapflights users on 10/28. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/238:30 amIAD - OPO
2 stops25h 45mMultiple Airlines
mar. 12/96:00 amOPO - IAD
2 stops19h 26mMultiple Airlines
Deal found 10/28$496
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/1912:11 pmIAD - OPO
2 stops17h 19mDelta
mar. 12/1611:15 amOPO - IAD
2 stops17h 57mDelta
Deal found 10/28$498
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/312:50 pmIAD - OPO
2 stops17h 50mUnited Airlines
mié. 12/106:00 amOPO - IAD
2 stops43h 26mUnited Airlines
Deal found 10/27$499
This United Airlines deal was found by Cheapflights users on 10/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/36:00 amDCA - OPO
2 stops24h 40mUnited Airlines
mié. 12/1712:30 pmOPO - DCA
2 stops29h 43mUnited Airlines
Deal found 10/29$499
This CheapOair deal was found by Cheapflights users on 10/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/311:05 amDCA - OPO
2 stops21h 10mMultiple Airlines
lun. 12/84:15 pmOPO - DCA
2 stops32h 30mMultiple Airlines
Deal found 10/29$501
This Priceline deal was found by Cheapflights users on 10/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/39:45 amIAD - OPO
2 stops22h 30mMultiple Airlines
dom. 12/76:15 amOPO - IAD
1 stop18h 50mMultiple Airlines
Deal found 10/29$502
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/312:50 pmIAD - OPO
2 stops17h 50mUnited Airlines
mié. 12/176:00 amOPO - IAD
2 stops20h 14mUnited Airlines
Deal found 10/27$503

Cheap flight deals from District of Columbia to Portugal

Keep the following information in mind while searching for District of Columbia to Portugal flight deals. Data was last updated octubre 30, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$492
(CheapOair)

One-way from

$286
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$785

Good round-trip deal

$471 or less

Good one-way deal

$289 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 District of Columbia to Portugal
Search Deals
One-way flight from District of Columbia to Portugal
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from District of Columbia to Portugal.
Search Deals
Price to beat on a one-way flight from District of Columbia to Portugal.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 octubre 30, 2025.
Use the filters below to find and compare flights from District of Columbia to Portugal that are best for you.

Fly from

District of Columbia

Fly to

Portugal

Route

Depart

Return

Price

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mar. 11/11

12:36 pm-10:30 am

2 stops16h 54m

Porto

mar. 11/18

11:15 am-12:16 am

2 stops18h 01m

$492

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mié. 12/3

9:45 am-1:15 pm

2 stops22h 30m

Porto

mié. 12/10

12:55 pm-8:59 pm

2 stops37h 04m

$492

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 12/9

2:55 pm-10:30 am

2 stops14h 35m

Porto

mar. 12/16

11:15 am-10:57 pm

2 stops16h 42m

$492

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mié. 12/3

11:13 am-10:30 am

2 stops18h 17m

Porto

mié. 12/10

6:00 am-10:57 pm

2 stops21h 57m

$492

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

vie. 1/16

10:30 pm-6:00 pm

1 stop14h 30m

Porto

mié. 1/21

10:00 am-9:00 pm

1 stop16h 00m

$499

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mié. 12/3

12:50 pm-11:40 am

2 stops17h 50m

Porto

mié. 12/10

6:00 am-8:26 pm

2 stops43h 26m

$499

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

jue. 11/27

5:33 pm-9:30 am

1 stop10h 57m

Porto

jue. 12/4

6:00 am-2:35 pm

1 stop13h 35m

$499

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

mié. 12/3

12:50 pm-11:40 am

2 stops17h 50m

Porto

mié. 12/17

6:00 am-9:14 pm

2 stops20h 14m

$503

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

lun. 12/29

10:33 pm-11:40 am

2 stops32h 07m

Porto

vie. 1/9

12:30 pm-11:53 am

2 stops28h 23m

$504

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

dom. 11/30

5:33 pm-9:30 am

1 stop10h 57m

Porto

sáb. 12/13

6:00 am-7:29 am

2 stops30h 29m

$514

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from District of Columbia to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from District of Columbia 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 District of Columbia to Portugal

What is the cheapest month to book a flight from District of Columbia to Portugal?

Currently, July is the cheapest month in which you can book a flight from District of Columbia to Portugal (average of $346). Flying from District of Columbia to Portugal in December is currently the most expensive (average of $551). 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 DC to PT?

Find hourly flight availability from District of Columbia 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 octubre 30, 2025.

When flying from District of Columbia to Portugal, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 19% versus a flight in the evening.

What is the cheapest day to fly from District of Columbia to Portugal?

Use this chart to determine the cheapest time to fly round-trip from District of Columbia to Portugal. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their District of Columbia to Portugal flight should consider departing on Sunday afternoons when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from District of Columbia 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 District of Columbia to Portugal?

    Airlines like Delta, TAP AIR PORTUGAL, and United Airlines fly from District of Columbia to Portugal in about 14h 30m. The time it takes to get you to your destination can typically vary by up to 3h 20m. There are 3537 mi between District of Columbia and Portugal. 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 District of Columbia to Portugal one-way?

    One-way options have recently been found by users for as low as $359 on Scandinavian Airlines. Other airlines that offer cheap prices include Royal Air Maroc from $364 and Air Canada from $377 one-way.

  • Can I find deals for flights from District of Columbia to Portugal that include hotel bookings?

    Yes. In addition to deals on District of Columbia to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from District of Columbia to Portugal?

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

  • Can I find deals for business class flights from District of Columbia to Portugal?

    Yes. Cheapflights offers flight deals from District of Columbia 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 District of Columbia to Portugal?

    Currently, July is the cheapest month in which you can book a flight from District of Columbia to Portugal (average of $346). Flying from District of Columbia to Portugal in December is currently the most expensive (average of $551). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for District of Columbia to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Charles de Gaulle flights
Newark to Charles de Gaulle flights
John F Kennedy Intl to Gatwick flights
John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights
LaGuardia to Heathrow flights
John F Kennedy Intl to London City flights
Boston to Heathrow flights
Newark to Orly flights
Newark to Gatwick flights
John F Kennedy Intl to Istanbul flights
Newark to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Orly flights
Miami to Madrid flights
Dulles Intl to Heathrow flights
John F Kennedy Intl to Madrid flights
Los Angeles to Heathrow flights
Newark to Madrid flights
John F Kennedy Intl to Stansted flights
LaGuardia to Charles de Gaulle flights
LaGuardia to Gatwick flights
John F Kennedy Intl to Luton flights
San Francisco to Heathrow flights
Newark to London City flights
John F Kennedy Intl to Barcelona-El Prat flights
Newark to Barcelona-El Prat flights
Los Angeles to Charles de Gaulle flights
John F Kennedy Intl to Malpensa flights
Dallas/Fort Worth to Heathrow flights
O'Hare Intl to Heathrow flights
John F Kennedy Intl to Lisbon flights
John F Kennedy Intl to Dublin flights
Boston to Charles de Gaulle flights
Newark to Malpensa flights
Newark to Istanbul flights
Baltimore to Heathrow flights
Newark to Dublin flights
Newark to Lisbon flights
O'Hare Intl to Charles de Gaulle flights
Dulles Intl to Charles de Gaulle flights
Newark to Luton flights
Seattle to Heathrow flights
O'Hare Intl to Frankfurt flights
Dulles Intl to Madrid flights
Newark to Stansted flights
San Francisco to Charles de Gaulle flights
John F Kennedy Intl to Amsterdam flights
Dallas/Fort Worth to Frankfurt flights
LaGuardia to Leonardo da Vinci/Fiumicino flights

Top 10 airlines flying from District of Columbia to Portugal

Discover the top 10 airlines that operate flights from District of Columbia 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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$345Average$396FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$493Average$1,073FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$504Average$599FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$506Average$925FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$508Average$749FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$510Average$924FlexibilityNo cancel feeOn-time70%
IberiaCheapest$515Average$721FlexibilityNo cancel feeOn-time77%
DeltaCheapest$529Average$904FlexibilityNo cancel feeOn-timeN/A
Royal Air MarocCheapest$552Average$673FlexibilityNo cancel feeOn-time75%
KLMCheapest$555Average$741FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.