$230 Find Cheap Flights from Washington, D.C. to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Portugal departing on 10/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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Cheap Flights from Washington, D.C. to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon1 stop$392
Porto
Porto2 stops$491
Ponta Delgada
Ponta Delgada1 stop$557
Faro
Faro1 stop$525
Funchal
Funchal1 stop$503
Velas
Velas2 stops$978
Lisbon
Lisbon1 stop$392
Porto
Porto2 stops$491
Ponta Delgada
Ponta Delgada1 stop$557
Faro
Faro1 stop$525
Funchal
Funchal1 stop$503
Velas
Velas2 stops$978

Book Cheap Washington, D.C. to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Portugal

Sun, Oct 12 - Fri, Oct 17
PLAY Logo
6:50 pm - 8:20 pmBWI-LIS
20h 30m1 stop
PLAY Logo
9:20 pm - 5:40 pmLIS-BWI
25h 20m1 stop
$392PLAY
Find Deal
Sun, Oct 12 - Fri, Oct 17
PLAY Logo
6:50 pm - 8:20 pmBWI-LIS
20h 30m1 stop
PLAY Logo
9:20 pm - 5:40 pmLIS-BWI
25h 20m1 stop
$395PLAY
Find Deal
Mon, Nov 3 - Tue, Nov 11
Delta Logo
7:45 pm - 3:25 pmBWI-OPO
14h 40m2 stops
Delta Logo
11:10 am - 11:00 pmOPO-BWI
16h 50m2 stops
$491Delta
Find Deal
Thu, Oct 23 - Tue, Nov 4
Delta Logo
5:39 pm - 3:30 pmBWI-OPO
16h 51m2 stops
Delta Logo
11:10 am - 11:02 pmOPO-BWI
16h 52m2 stops
$528Delta
Find Deal
Thu, Nov 13 - Tue, Dec 2
United Airlines Logo
10:56 am - 9:30 amBWI-OPO
17h 34m2 stops
United Airlines Logo
6:00 am - 1:50 pmOPO-BWI
36h 50m2 stops
$530United Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
United Airlines Logo
6:30 am - 11:40 amIAD-OPO
25h 10m2 stops
United Airlines Logo
6:00 am - 11:59 pmOPO-IAD
22h 59m2 stops
$547United Airlines
Find Deal
Sun, Oct 12 - Tue, Oct 21
TAP AIR PORTUGAL Logo
10:20 pm - 6:50 pmIAD-PDL
16h 30m1 stop
TAP AIR PORTUGAL Logo
7:25 pm - 3:20 pmPDL-IAD
23h 55m1 stop
$557TAP AIR PORTUGAL
Find Deal
Tue, Dec 2 - Sun, Dec 7
TAP AIR PORTUGAL Logo
5:30 pm - 9:45 amIAD-FNC
11h 15m1 stop
TAP AIR PORTUGAL Logo
4:10 am - 3:15 pmFNC-IAD
16h 05m1 stop
$575TAP AIR PORTUGAL
Find Deal
Wed, Nov 5 - Tue, Nov 11
Royal Air Maroc Logo
8:45 pm - 4:55 pmIAD-LIS
15h 10m1 stop
Royal Air Maroc Logo
5:55 pm - 6:45 pmLIS-IAD
29h 50m1 stop
$626Royal Air Maroc
Find Deal
Sun, Oct 19 - Sat, Oct 25
Royal Air Maroc Logo
9:05 pm - 5:40 pmIAD-LIS
15h 35m1 stop
Royal Air Maroc Logo
6:40 pm - 7:45 pmLIS-IAD
30h 05m1 stop
$635Royal Air Maroc
Find Deal
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Portugal flights

Get data-powered insights and trends into flights from Washington, D.C. to Portugal to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Washington, D.C. to Portugal flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Portugal from Washington, D.C. found in the last 72 hours was to Lisbon, at $424 round-trip. The most popular route is from Washington, D.C. Dulles Intl Airport (IAD) to Lisbon (LIS), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $424.

Can I save money by flying with a layover from Washington, D.C. to Portugal?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $825, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Washington, D.C. to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Portugal, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to Portugal is February, when tickets cost $664 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,321 and $1,223 respectively.

What’s the cheapest day of the week to fly from Washington, D.C. to Portugal?

The average price of all round-trip flights from Washington, D.C. to Portugal clicked on KAYAK for each day over the last 12 months.

When flying from Washington, D.C. to Portugal, you should consider leaving on a Monday and avoid Fridays if you are looking for the best rates. For your return to Washington, D.C., you’ll find the best rates on Sundays and the most expensive ones on Mondays.

How far in advance should I book a flight from Washington, D.C. to Portugal?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. to Portugal, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. to Portugal, you should book around 7 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$230
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Baltimore to Porto

FAQs - booking Portugal flights

  • Which airport in Portugal offers free wheelchair services?

    Due to a requirement by the European Union that mandates all airports in the region to provide free accessibility services to travelers with disabilities and reduced mobility, you will be able to receive free wheelchair services at any airport in the country upon request. Simply reserve one by informing your airline or travel agent at least 48 hours before departure.

  • Are there any airlines offering direct flights on this route?

    While most of the flights from Washington D.C. to Portugal have at least one layover in between, you can still get a direct flight on this route. TAP Air Portugal, Lufthansa, and United Airlines are the only airlines offering direct trips. All flights come from Dulles International Airport (IAD) and land at Humberto Delgado Airport (LIS).

  • Which international airlines have a lounge at IAD Airport?

    There are ten lounges at IAD Airport where you can hang out while waiting to board your flight. United Airlines has four lounges, three of which are located in Concourse C while the fourth one is in Concourse D. Air France and KLM have a joint lounge in Concourse A opposite Gate A22 while the Virgin Atlantic Clubhouse is on the same concourse near Gate A32. Turkish Airlines, British Airways, and Lufthansa lounges are all in Concourse B.

  • Which is the closest airport to downtown Washington D.C?

    The closest airport to downtown Washington D.C is DCA. If you're coming from that region, you should consider booking a flight that flies out of DCA. It is also worth mentioning that DCA is the least busy airport compared to BWI and IAD. However, only IAD offers direct flights from Washington to Portugal.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington, D.C. to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Washington, D.C. to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Washington, D.C. to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Portugal?

    The cheapest time of day to fly to Portugal is generally in the afternoon, when round-trip flights cost $661 on average. Morning departures are around 6% cheaper than evening flights, on average. The most expensive time of day to fly to Portugal is generally at night, which is peak travel time and where the average cost of a ticket is $844.

Top tips for finding cheap flights to Portugal

  • When flying out of Washington, you have the choice between Ronald Reagan Washington Airport (DCA), Dulles Airport (IAD), and Thurgood Marshall Airport (BWI). All three airports offer flights from Washington D.C to Portugal.
  • Humberto Delgado Airport (LIS) is the best airport to land in Portugal if you want access to most attractions in the country. This is because the airport is located in the country’s capital and provides flight, train, and bus connections to other major cities in Portugal.
  • When traveling with your pet through BWI Airport, you will find pet relief areas both indoors past security and outdoors. There are two indoor pet relief areas; one is located in the Concourse D/E connector immediately after the checkpoint while the other can be found at the entrance of Concourse C.
  • Any nursing moms traveling through DCA will be happy to know that the airport has several private nursing suites where you can breastfeed your child. There’s one in Terminal A just before the security checkpoints and another two in Terminal B near Touch of Color on National Hall.
  • As long as you don’t plan on staying in Portugal for longer than 90 days, you won’t need a visa to be allowed into the country. However, a passport remains a necessity and it should have at least six months of validity left in it.

Reviews of the top 5 airlines serving from Washington, D.C. to Portugal

 
Need help choosing which airline to fly with from Washington, D.C. to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 7957 reviews
7.9Entertainment
7.3Food
7.9Comfort
8.2Boarding
8.5Crew
Airline reviews

Passengers need to check in big baggage instead of bringing on the plane. That cause inconvenience for everyone. Otherwise flight was good.

8.0 ExcellentTarun, Sep 2025MCO - LHR
Read more Delta reviews

Passengers need to check in big baggage instead of bringing on the plane. That cause inconvenience for everyone. Otherwise flight was good.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

The food was terrible especially for a 15 hour international flight. The crew was unpleasant as well.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Quick check in. Everything went smooth. I don't know what can be done about airline food.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Nothing special. The crew never went out of their way for anything.

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

Too hot. Asked for an extra glass of water and was ignored. Asked to sit in empty seats that were open because it was so hot and crowded and was denied and the seats were empty the entire flight

Terrible leg room - I’m 5’3” and my knees were touching the seat in front of me. When the person sitting in front of me leaned back, there was about 15 inches of space between my head and the TV screen which made it awkward to view movies. Last year they had decent food, but this year the only tasty item on the trip was dessert.

The flight was delayed leaving Philadelphia due to “catering” and consequently arrived in Dublin some 75 minutes later than scheduled. Consequently this caused me to miss my connecting flight to Glasgow and I had to spend the night in Dublin.

The flight from Cincinnati to Philadelphia was satisfactory and uneventful.

All of my Aer Lingus flights were delayed. The seat I purchased with extra leg room was exactly the same as my previous seat that was free. I would appreciate my money back.

It was truly a horrible flight. We were delayed almost 2 hours. The seats were so tiny, my legs were hurting the entire flight. When i finally made it to Ireland i missed my connecting flight because we left Newark late. I will most likely never fly Aer Lingus again

Terrible. The test of an airline is how they deal with problems. There is very little to differentiate between airlines. Aer Lingus failed absolutely. They lost one of my bags even though we had more than a 2 hour connection in Dublin. Trying to get it back has been awful. In checking on line I can see that the bag is in Edinburgh and it was supposed to be delivered today. It wasn't. The number we have in the UK doesn't answer. I had to pay for an international call to speak to somebody. All the woman at the call centre could say was be patient wait. I can tell you when it will be delivered nor can I tell you who the courier is.

Not JetBlue's fault but Aer Lingus never explained how to transfer to JetBlue.

Poor check-in experience in Manchester. Delayed boarding and check-in agent never explained how to transfer in NYC to JetBlue.

I was very disappointed that the online sys allowed me to get the boarding pass for the second leg of the trip, when I clearly request it for both flights!

An old airplane with very uncomfortable seats in the Comfort “class! Small, narrow, and hard seat. Entertainment options are inferior, old movies. Boarding started at the back of the airplane, as we entered the aircraft last instead of after business class, risking the possibility that the comfort section would not have room for carry-on in the overhead bin. The food was ok. White wine was terrible. Overall, the flight felt worse than cheap airliners, and the price was as high as premium carriers.

I will avoid TAP if I can, the ground experience was very poor with bad behaviour from the ground crew and it was only a bit better on the aircraft.

I had a business class ticket from EWR to Madrid with a layover at LIS for 11 hours. It was obvious that I needed to pick up my luggage in Lisbon for 11 hours and check it in again when boarding the second flight to Madrid. Before buying the ticket, I called TAP customer service. Customer service assured me that I could get my luggage in Lisbon. When I arrived at Newark airport, I immediately asked to check my luggage to Lisbon. However, the TAP employee refused me, saying that I should resolve this issue upon arrival in Lisbon. She checked my luggage to Madrid. I asked the TAP employee at the gate to help me when boarding the plane, I asked the flight attendants manager on board the plane to help me. All the employees refused to help me and said that I should resolve this issue in Lisbon. It took me 4 hours to resolve this issue in Lisbon. I arrived at 11am and they didn't give me my luggage until 3pm. As a result, I was so tired after a sleepless night on the plane and 4 hours on my feet at the airport and all my plans were ruined that I couldn't fly to Madrid. It was a terrible experiance,

The seats were not designed to comfortably see people in coach for more than 10 minutes

A good, comfortable flight with friendly crew and good entertainment options.

Very rude person at the boarding desk; flight attendant coughing 3 inches from my face three times- not even covering her mouth; boarding process very unacceptable for older people with stairs to all planes (are you all stuck in the 1960’s?). I am sure that I am not remembering all of the negative things, but I am sure you get the message!

There was chaos at the Naples airport. We arrived three hours early for the flight but there was no invitation available about where to go to check bags until an hour later. Then we had to go to a different terminal to check our bags and check in and back to the first to board.

We flew TAP last October from Newark to Lisbon. The meal was bad. This flight had good food. Also, this flight was delayed. There were TAP employees waiting at Lisbon to make sure we made our connecting flight. I find the TAP website and app frustrating, but the service once we reached the airport was very good

The airport temperature at the airport and on the flight was too warm

Boarding too way too long. Biggest peeve: zero in-seat power in economy! No plug sockets, no USB ports. Plane was an A330, so not old.

Intersting crew: only men with a bit of roughness. The food was not bad, but there´s no alcohol option

The food was disappointing, and the airplane appeared old, with torn seats. Royal Air Maroc could definitely do better.

Extremely Disappointing Experience Boarding was chaotic and poorly managed—we were left standing in the heat for 30–45 minutes with no explanation or apology. As a business class passenger, I was shocked when a staff member rudely refused to let me board after I questioned why I had to check in my carry-on, which contained valuables. Despite explaining my concerns, he remained unreasonably inflexible. Thankfully, the captain intervened and retrieved my bag personally. This same staff member was also loud and disrespectful to several other passengers. Completely unacceptable service.

Awful. Seats on this Dreamliner really uncomfortable with broken tables. No food selection availability in business class. Poor service. No engagement senior flight attendant spent more time applying make up then speaking to her guests. It appeared that the right side received a different level of service to the left when there were only 8 people. Worst flight I have ever had. A great way to ruin an outstanding two week with this return flight

Flights were okay. Not bad, not good. On time and efficient. Planes are a bit old and run down, even the 787... Casablanca airport, HORRIBLE. no air conditioning, no power outlets, no clear signs to anywhere, old, unfriendly, no restaurants to speak of. Casablanca lounge, HORRIFIC No seats available most of the time, no power outlets working, no food, only water is offered, 1 shower available, unfriendly and inneficient people, no air conditioning, flies and bugs everywhere, extremely old seats and unconfortable. Although with some cleaning crew present, toilettes are .... not too clean.

3 hour delay, very rude flight attendant the food was horrible.

Wait time was very long during boarding. We had to wait a while in the bus which was under the sun.

When the flight landed, it was still going towards the gate, when everybody got up. Nobody cared that the flight was still in "active taxi" mode. But seems like this is common on Air Maroc flights.

1. Boarding - Chaotic, no announcements. 2. Gate Agents - Don't care about anything. 3. Inflight - FA are good and cordial. 4. Landing - Everybody is in a rush to get out because of the crowding at immigration.

This is the worst seat that I ever sat on. The length and width are great but Super uncomfortable. We felt like sitting on marble.

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

Cabin class types available on flights to Portugal

Cabin classes available on flights to Portugal. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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