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Cheap Flights from Dulles Intl to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Lisbon
Lisbon2 stops$723
Porto
Porto3 stops$666
Faro
Faro3 stops$574
Ponta Delgada
Ponta Delgada3 stops$697
Funchal
Funchal2 stops$723
Lajes
Lajes1 stop$847
Pico Island
Pico Island1 stop$1,052
Horta
Horta3 stops$1,576
Lisbon
Lisbon2 stops$723
Porto
Porto3 stops$666
Faro
Faro3 stops$574
Ponta Delgada
Ponta Delgada3 stops$697
Funchal
Funchal2 stops$723
Lajes
Lajes1 stop$847
Pico Island
Pico Island1 stop$1,052
Horta
Horta3 stops$1,576
Booking Insights

Price, demand and travel trends for Washington, D.C. Dulles Intl Airport to Portugal flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

Are flights from Washington, D.C. Dulles Intl Airport to Portugal cheaper or more expensive than last year?

Fares from Washington, D.C. Dulles Intl Airport to Portugal are running about 12% higher than they were around this time last year, averaging $1,010 round-trip.

What are the cheapest fares from Washington, D.C. Dulles Intl Airport to Portugal right now?

Here are the cheapest round-trip fares from Washington, D.C. Dulles Intl Airport to Portugal on KAYAK in the last week:

• Faro (FAO) from $574
• Porto (OPO) from $666
• Ponta Delgada Nordela (PDL) from $697
• Lisbon Humberto Delgado (LIS) from $723
• Funchal Madeira (FNC) from $723

What’s the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Portugal?

January is the cheapest time of year to fly, with average fares of $663. Prices are highest in June, when average flight costs increase to around $1,354.

When is the best time to book flights from Washington, D.C. Dulles Intl Airport to Portugal?

Book your flights 14 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 30% compared to booking last-minute (within 2 weeks of departure).

Which airport in Portugal is the cheapest to fly to from Washington, D.C. Dulles Intl Airport?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Portugal are:

• Porto (OPO) from $834
• Ponta Delgada Nordela (PDL) from $962
• Faro (FAO) from $1,060

What’s the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Portugal?

Wednesday tends to be the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Portugal, while Saturday is the most expensive. Fares run about 13% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from Washington, D.C. Dulles Intl Airport to Portugal?

Data from the past 12 months shows it's cheapest to fly to Portugal during the morning with average prices of $868. The night is the most expensive time to fly, with average prices of $1,074.

Key details for Washington, D.C. Dulles Intl Airport to Portugal flights

Low season

January

Cheapest flight

$314
Beat the crowds with an average 68% drop in travelers.
The most popular month to fly with an average 9% increase in travelers.
One-way flight from Washington, D.C. Dulles Intl Airport to Porto

Your Washington, D.C. Dulles Intl Airport to Portugal flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Washington, D.C. Dulles Intl Airport to Portugal?

    Yes. Fares from Washington, D.C. Dulles Intl Airport to Portugal are low right now. As a rule of thumb, a round-trip under $782 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Washington, D.C. Dulles Intl Airport to Portugal?

    Over the past 12 months, round-trip fares from Washington, D.C. Dulles Intl Airport to Portugal have ranged from $782 to $1,298.

  • What are the main airports serving Portugal?

    Portugal has 6 airports. The three busiest are Lisbon Humberto Delgado (LIS) (72% of arrivals), Porto (OPO) (19%) and Faro (FAO) (5%).

  • What airlines fly nonstop from Washington, D.C. Dulles Intl Airport to Portugal?

    Based on the flight schedule for the next 3 months, 2 airlines offer nonstop flights on this route:

    • TAP AIR PORTUGAL
    • United Airlines

  • Where in Portugal can I fly nonstop from Washington, D.C. Dulles Intl Airport?

    Based on the flight schedule for the next 3 months, you can only fly nonstop from Washington, D.C. Dulles Intl Airport to Lisbon.

  • Is it cheaper to fly with a layover from Washington, D.C. Dulles Intl Airport to Portugal?

    Yes. Nonstop flights from Washington, D.C. Dulles Intl Airport to Portugal average $1,100 over the past 12 months, but flights with a layover can cost less. The most affordable connecting airports are:

    • Reykjavik Keflavik Intl (KEF) from $509
    • Kastrup Copenhagen (CPH) from $619
    • Munich Franz Josef Strauss (MUC) from $665

  • How long is a flight from Washington, D.C. Dulles Intl Airport to Portugal?

    Flights from Washington, D.C. Dulles Intl Airport to Portugal take 7h 05m on average.

  • How often are flights from Washington, D.C. Dulles Intl Airport to Portugal delayed and what's the average delay?

    21% of flights on this route are delayed by at least 15 minutes. The average delay is 2h 36m.

  • Which cabin classes are available on flights from Washington, D.C. Dulles Intl Airport to Portugal?

    On flights from Washington, D.C. Dulles Intl Airport to Portugal you can book Economy Class, Premium Economy Class, Business Class or First Class.

  • What are some popular landmarks in Portugal?

    KAYAK travelers' favorite landmarks in Portugal include:

    • Chiado
    • Ribeira Square
    • Avenida dos Aliados
    • Praça do Marquês de Pombal

  • What are the earliest and latest flights from Washington, D.C. Dulles Intl Airport to Portugal?

    The earliest nonstop flight from Washington, D.C. Dulles Intl Airport to Portugal departs at 5:05 pm and the latest departs at 11:30 pm. Nonstop flights take about 7h 05m.

Your guide to booking Washington, D.C. Dulles Intl Airport to Portugal flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 14 weeks before your trip. KAYAK data shows fares in this window are around 30% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • If your travel dates are flexible, book your trip for January when flights are typically cheapest and avoid June when prices are at their highest.
  • Flying on Wednesday is usually the cheapest. Flights on Saturday cost about 13% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Porto (OPO) is the cheapest airport to fly into from Washington, D.C. Dulles Intl Airport. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Lisbon, which is the most popular destination in Portugal. From there, it's easy to continue on to other popular destinations such as Porto, Albufeira and Funchal.
  • If you want the shortest trip, choose the Washington, D.C. Dulles Intl Airport to Portugal nonstop route. If you'd rather save money, the route via Reykjavik Keflavik Intl (KEF) is usually the cheapest.

Reviews of the top 5 airlines serving from Dulles Intl to Portugal

 
Need help choosing which airline to fly with from Dulles Intl 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.
7.4
United AirlinesOverall score based on 10307 reviews
7.1Entertainment
8.1Crew
6.7Food
7.3Comfort
7.7Boarding
Airline reviews

Flight delayed over an hour with plane on runway because of weather in an area of the country we were not in or flying to.

2.0 MediocreJeffrey, Oct 2026
Read more United Airlines reviews

Flight delayed over an hour with plane on runway because of weather in an area of the country we were not in or flying to.

The very best airline service I have experienced. Better than domestic airlines first class and I flew Economy Plus!

The food was horrible. There was no. Wifi, and it was just terrible from bangkok to d. C

Boarding was 2 hours late and then we were delayed another 5 hours on the tarmac. I'm sure the crew were also tired, but some of them were rather snappy. The special dinner I ordered was not served, and they only served a tapas box on takeoff and breakfast before landing. That was disappointing in premium economy. However United was good at rebooking my connecting flight.

It was pretty good, they give a small blanket, neck pillow and earphones. The only bad thing was not big enough leg room for your bag and feet. They gave us a snack, dinner, and breakfast on flight and food was good considering it was on a plane

The crew was great. The food was typical, but decent. Everything else - mediocre to poor. The flight was late arriving - happily for us and our 49 minute connection (what idiot came up with that?)- in another concourse - that concourse changed before we arrived (ticket and app was showing the incorrect gate - when we boarded at the correct gate - known by the airport person pushing my assistance cart). Had I walked and read the screens or United app I would have missed the flight! May other people arrived late to the correct gate, having been victims of a last minute gate change, were also relieved the flight arrived late. The aircraft (Boeing 757) was a sardine-can due to an uncomfortable seat pitch distance. The material or seat was beyond not comfortable, but I'm sure they made a lot of money with that aircraft type. I spent a lot of time standing in the back (in the middle of the night/morning to rest my back). I learned my lesson - any trans-oceanic fight - avoid United or American Airlines - and look for Airbus or Boeing 737, 767, 777. Also, pay for business class or premium coach seating.

Crew was great. Seats are cramped and uncomfortable and I’m a small person.

A little more friendliness from that crew of the day.

Staff didn't seem confident about the ingredients in my lactose intolerance meal

the seat has a problem. the back had a hole.

Cabin crew was one of the worst in memory. Poor in delivering service - in some cases skipping it altogether. Someone in baggage handling managed to steal my electronic bag tracker from Apple.

I buy ticket from you and when I go to the airport aer Lingus they tell me you need travel visa for Ireland for one hour travel so when I buy tickets there no requirement I need transit, visa or not so when I try to cancel my ticket or change my ticket, you guys say there is no refund so you u guys take all my money which is very disappointed

The aircraft was clean and relatively comfortable- for an aircraft seat. The entertainment was good. The food was terrible, especially the “breakfast “ which was a cereal bar, and just not good. The crew were amazing, professional and no complaints there. The food was so bad, I know for my return, it will be inedible.

The embarkation at Dublin was a kin to a Ryanair approach, in other words a circuitous and cheep access

Flight crew was superb. Meal was one of the meals at altitude I’ve had

Couldn’t check In online, message was couldn’t check in until Sunday morning though plane left Saturday night. Checked in okay at airport but caused slot if stress.

Excellent flight and crew. Boarding at Dublin Airport was a very difficult trying to find the right gate.

Delightful flight, ahead of time with a super crew, thanks

I had a great experience. I wasn’t sure what to expect but the crew helped me check my bags and made sure I got in the correct line to board. It was a bit of a walk to my gate so arrive early. I would recommend securing a flight that includes checking in your bag if you remotely think your baggage is over 10kg/22lbs. Be safe and upgrade unless you are carrying a backpack or weekend type baggage.

The only problem was there are games on the entertaiment system. The guy behind me played poker the entire time and poking the back of my seat. I hope they remove these.

The in flight meal was absolutely delicious. One thing I noted was that the meals weren’t just prepackaged tv dinner style options but were actual prepared meals you could tell were cooked that day in a kitchen and individually packaged for the flight.

The flight took off two hours late. What was good was that I was getting an information on this earlier in the day. The lounge agent sent the passengers to the gate way too early. That was annoying. The food aboard was disgusting. The service aboard was okay. The seats were good. Overall, it's a very mediocre experience. Well, it's not a five-star airline and not one that aspires to be one. Comparing TAP Portugal to Iberia or Lufthansa, I'd rather see it as a three-star airline, even though it's website works much better than what Lufthansa has been trying to pull off for the past decade.

The plane was FABULOUS. The crew were wonderful and the food more than I expected.

Poor. Our flight was delayed and they told me I would be fine to make my connection in Lisbon, I missed it. Then they told me my bag would be automatically loaded onto my new flight to rome. It wasn’t. It’s been 4 days and I still don’t have it.

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

Checked bG chstgr was extremely high. Over $120. It was s bsit and switch knowing an international passenger would have t9 check a bag.

On time, politeness, food okay but entertneiment mediocre with only old movie and the so called new we’re 2 or 3…

Everything went very well. I would like to acknowledge the politeness and professionalism of the staff—they are superb. No complaints.

No legroom, have to pay for everything including water?!? Water is more expensive than beer?

We liked the crew. They were competent, professional and friendly. The only big negative was our departure was delayed several times and the airport staff did not communicate what the problems were and what we should expect.

Lufthansa was great. Crew on board excellent. Frankfort passport control horrible it took about two hours to get through. After waiting in line for hours there was a discussion with the passenger in front of me that was taking forever. The couple behind me had a connecting flight to Turkey in 30 minutes and asked border control officer of her situation and the control officer told the couple in a nasty tone if you don’t like it you can go to another line which would have surely made her miss the flight. Border patrol officers were not helpful. Finally made it through I had to exit and reentry for security check for my connecting flight which Lufthansa changed gates and I had to run to get to A60. Which it seemed 2 kilometers to get to but I made it. If i fid not have 2.5 hrs layover i would have missed my connecting flight to Milan. Not sure if I will fly through Frankfort in the future.

When our flight was canceled and rebooked, my husband's meal request was not transfered. As a result, there was nothing he could eat for dinner and breakfast on the new flight, save a side salad and roll.

Very efficient and excellent service. Nice amenities and beautiful plane. Elevated meals. Boarding could have been more organized. We missed our connecting flight due to EU entry but Lufthansa was extremely quick to rebook us.

Missed it by a couple minutes and couldn’t find an alternative flight so had to spend the night in DC and after much shuffling from 1 airline to another managed to get a United to Frankfurt.

There were only 2 toilets and one of them did not work in business class. We are not allowed to cross classes so had to wait in line to use the toilets!! The entertainment touch display was finicky and did not work all the time.

The flight and crew were good. The customer experience on the ground could have been better. We had to reschedule our flight because of a delay on the previous flight. The attendants working the desk in Washington DC were not helpful. They told us to scan a QR code and that would get us rebooked. Why couldn't two people standing at their computers do this? We had to chat with someone to get everything figured out. It was extremely confusing.

good entertainment package but rather small seats for business class

The male attendant has zero personality. It seemed like he was over worked or hated his job, not once did he smile or made any contact with the people on the plane. Strictly business and call it a day!

Our flight was delayed for over an hour due to weather, and it had already been a long travel day. However, the crew was calm and compassionate, listening to every complaint with genuine concern. They got us home safely without incident, in spite of all of the obstacles. I’m grateful.

Bad! Disaster!! The LH419 was cancelled after 4 hrs on board with no AC and no toilets

We missed our connection and they put us in a hotel our luggage didn't get rerouted with us so we arrived with no luggage

The crew was friendly, 5/5 stars. The food was better than ok, 3.5/5 stars. The seats were tight, 3/5 stars. The entertainment was 2/5 stars because of lack of WiFi.

ldid not like the late departure did not like the late food service. Food should have been serve earlier ro allow more sleeping time. Did not like beeing interrupted just to show announcement about their duty free onboard Finally baggage did not make it to final destination and are still in casablanca.

My luggage was left behind in Miami. I wasn’t the only one. I couldn’t get a boarding pass from air Maroc but I got one from American Airlines for the air Maroc leg. I had the sense of getting in line with air Maroc boarding crew and showed them my AA boarding pass for air Maroc and I got a new one from them. There were several passengers filing missing bags reports in Casablanca so I assume there isn’t a good coordination between airlines. My AA bag ticket says Casablanca but it is from AA. I wasn’t the only one missing a bag.

I couldn’t find my boarding pass with the information provided by Underpricer. It took me several hours to find what the issue was. Finally I got the right code to get my boarding pass from American Airlines. Underpricer WhatsApp call center finally got it right. When I got to Casablanca my luggage was left in Miami. Not sure which airline fault it was if Air Maroc or AA. I filled out a report with Air Maroc

I would like to praise one of the stewards, Mohamed, who was swift and efficient to help me as I was not feeling well at some point during the flight.

Stay away at all cost! Late boarding, late departure, inoperable seat controls and entertainment screens, very rude cabin crew,

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.

Plane is dirty Food quality poor Service was not good Lounge extremely bad

More options for your flight from Dulles Intl to Portugal

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