$268 Find Cheap Flights from Reagan Washington National Airport 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 Reagan-National to Portugal departing on 5/13. 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, 0 bags

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Cheap Flights from Reagan-National to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon2 stops$534
Porto
Porto2 stops$576
Faro
Faro2 stops$548
Ponta Delgada
Ponta Delgada2 stops$745
Funchal
Funchal3 stops$952
Lisbon
Lisbon2 stops$534
Porto
Porto2 stops$576
Faro
Faro2 stops$548
Ponta Delgada
Ponta Delgada2 stops$745
Funchal
Funchal3 stops$952

Book Cheap Reagan-National 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 Reagan-National 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 Reagan-National to Portugal

Tue, Mar 10 - Tue, Mar 17
British Airways Logo
4:34 pm - 12:05 pm
DCA
-
LIS
15h 31m
2 stops
British Airways Logo
11:05 am - 8:43 pm
LIS
-
DCA
13h 38m
1 stop
$534British Airways
Thu, Apr 9 - Tue, Apr 14
British Airways Logo
4:43 pm - 11:05 pm
DCA
-
LIS
25h 22m
2 stops
British Airways Logo
6:45 pm - 6:58 pm
LIS
-
DCA
29h 13m
2 stops
$547British Airways
Tue, Mar 10 - Tue, Mar 17
KLM Logo
12:29 pm - 9:30 am
DCA
-
FAO
17h 01m
2 stops
KLM Logo
7:45 pm - 5:49 pm
FAO
-
DCA
26h 04m
2 stops
$548KLM
Thu, Apr 23 - Tue, Apr 28
British Airways Logo
7:46 pm - 11:05 pm
DCA
-
LIS
22h 19m
2 stops
British Airways Logo
6:45 pm - 8:19 pm
LIS
-
DCA
30h 34m
2 stops
$549British Airways
Tue, May 5 - Wed, May 13
American Airlines Logo
1:25 pm - 7:40 am
DCA
-
OPO
13h 15m
2 stops
American Airlines Logo
8:20 am - 10:15 pm
OPO
-
DCA
18h 55m
2 stops
$576American Airlines
Tue, Feb 24 - Tue, Mar 3
United Airlines Logo
6:00 pm - 9:30 am
DCA
-
OPO
10h 30m
1 stop
United Airlines Logo
12:35 pm - 7:35 pm
OPO
-
DCA
12h 00m
1 stop
$591United Airlines
Wed, Apr 15 - Tue, Apr 21
United Airlines Logo
1:00 pm - 3:40 pm
DCA
-
OPO
21h 40m
2 stops
United Airlines Logo
12:00 pm - 6:03 pm
OPO
-
DCA
35h 03m
2 stops
$600United Airlines
Sun, Apr 12 - Wed, Apr 29
American Airlines Logo
4:43 pm - 11:45 am
DCA
-
OPO
14h 02m
2 stops
American Airlines Logo
12:25 pm - 10:17 pm
OPO
-
DCA
14h 52m
2 stops
$606American Airlines
Sun, Feb 22 - Sun, Mar 1
KLM Logo
11:06 am - 9:15 am
DCA
-
FAO
17h 09m
2 stops
KLM Logo
6:50 pm - 4:27 pm
FAO
-
DCA
26h 37m
2 stops
$686KLM
Sun, Apr 19 - Thu, Apr 23
TAP AIR PORTUGAL Logo
12:00 pm - 11:10 am
DCA
-
PXO
18h 10m
2 stops
TAP AIR PORTUGAL Logo
12:00 pm - 8:20 am
PXO
-
DCA
25h 20m
2 stops
$1,949TAP AIR PORTUGAL
Booking Insights

KAYAK's insights & trends for Reagan-National to Portugal flights

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

What is the cheapest month to fly from Washington, D.C. Reagan-National Airport 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. Reagan-National Airport 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. Reagan-National Airport to Portugal is November, when tickets cost $664 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $1,541 and $1,301 respectively.

Good to know

Low seasonJuly
Cheapest flight$268
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Reagan Washington National Airport to Porto

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Reagan Washington National Airport 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 Reagan Washington National Airport to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Reagan Washington National Airport to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Reagan Washington National Airport 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 Reagan Washington National Airport 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 Reagan Washington National Airport 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 Reagan Washington National Airport 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 Reagan Washington National Airport to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Reagan-National to Portugal

 
Need help choosing which airline to fly with from Reagan-National 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 9206 reviews
8.1Crew
7.7Boarding
7.3Comfort
7.1Entertainment
6.6Food
Airline reviews

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

10.0 ExcellentAnonymous, Jan 2026
IAD - ATL
Read more United Airlines reviews

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Delayed departure Madrid to Lisboa and my luggage no arrived

this flight was awful from pre-boarding to on the plane. There needs to be more coordination between TAP and My Way. We were in first class and I am handicapped. BY the time we got on the plane there was no place for our baggage and the crew did not handle the situation well. They gave us an argument and said that we'd have to have it checked. Then, after I complained they moved some people's bags to put our small carry ons several seats back of our seats which were in Row 4.

Late. Lack of updates. Rude hostesses. Terrible food. Lack of headphones.

Flight was delayed but crew gave little to no communication, then “began boarding” but really just had everyone stand up and wait for an hour without any news or updates, as if we were going to start boarding at any second. Total chaos. Seemed like this was their first time boarding a plane. When we arrived at our destination, we waited for over an hour for the baggage claim belt to even turn on. Probably waited at baggage claim for our luggage for close to two hours. Everyone was very confused and of course we all worried that the luggage was lost. Again, zero communication and everyone we asked just said “I don’t know.” So we were left wondering whether to wait, or file a missing baggage claim, or check the other baggage claim belts (which we did every fifteen-twenty minutes because we were just confused). Lack of communication throughout the experience was a huge issue.

The value is there, but the layovers in Lisbon were not great. The passport control was so bad that a 2 hour layover became very tight and on the return the Terminal was barebones which made it a long 3 hours.

From Casablanca to Lisbon our baggage 2 pound over they want me to pay $120 for 2 pound which unexpected we are two family 8 of us they counters lady her customer service is not good I fly frequently for my business next time fly with TAP Air I will think twice

Booked business with TAP from LAX to Cabo Verde - overall ok, but just doesn’t feel like business class. More of a budget airline

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.

I like the price. I dislike the website where I wanted to ask questions about the unusual high prices of the luggage fees. I called the toll free number from the United States and I cannot get through. You should test your own toll free website for info and you will know what I am writing about.

Wonderful just hope the had more direct flights to Boston

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