$290 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 7/18. 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$580
Porto
Porto1 stop$583
Faro
Faro2 stops$549
Ponta Delgada
Ponta Delgada1 stop$755
Funchal
Funchal2 stops$858
Lisbon
Lisbon2 stops$580
Porto
Porto1 stop$583
Faro
Faro2 stops$549
Ponta Delgada
Ponta Delgada1 stop$755
Funchal
Funchal2 stops$858

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

mar., mar. 10 - mar., mar. 17
KLM Logo
1:40 pm - 9:30 am
DCA
-
FAO
15h 50m
2 stops
KLM Logo
7:45 pm - 5:00 pm
FAO
-
DCA
25h 15m
2 stops
$549KLM
sáb., abr. 18 - dom., abr. 26
Scandinavian Airlines Logo
6:00 am - 4:00 pm
DCA
-
LIS
29h 00m
2 stops
Scandinavian Airlines Logo
7:00 am - 10:41 pm
LIS
-
DCA
20h 41m
2 stops
$580Scandinavian Airlines
mié., ago. 19 - mié., sep. 2
Air Canada Logo
4:20 pm - 7:00 am
DCA
-
OPO
9h 40m
1 stop
Air Canada Logo
2:25 pm - 12:00 pm
OPO
-
DCA
26h 35m
2 stops
$583Air Canada
mar., abr. 7 - mar., abr. 14
Delta Logo
12:16 pm - 3:25 pm
DCA
-
OPO
22h 09m
2 stops
Delta Logo
5:00 am - 10:22 pm
OPO
-
DCA
22h 22m
2 stops
$588Delta
mié., ago. 19 - mié., sep. 2
United Airlines Logo
4:20 pm - 7:00 am
DCA
-
OPO
9h 40m
1 stop
United Airlines Logo
12:35 pm - 7:48 pm
OPO
-
DCA
12h 13m
1 stop
$590United Airlines
dom., jul. 26 - vie., ago. 21
United Airlines Logo
5:55 pm - 9:45 am
DCA
-
OPO
10h 50m
1 stop
United Airlines Logo
9:00 am - 3:53 pm
OPO
-
DCA
11h 53m
1 stop
$591United Airlines
mié., ago. 19 - mié., sep. 2
Air Canada Logo
11:00 am - 7:00 am
DCA
-
OPO
15h 00m
2 stops
Air Canada Logo
2:25 pm - 12:00 pm
OPO
-
DCA
26h 35m
2 stops
$592Air Canada
mar., abr. 7 - mié., abr. 15
Delta Logo
12:16 pm - 10:55 am
DCA
-
OPO
17h 39m
2 stops
Delta Logo
5:00 am - 4:36 pm
OPO
-
DCA
16h 36m
2 stops
$593Delta
dom., abr. 26 - mié., may. 6
American Airlines Logo
1:29 pm - 7:40 am
DCA
-
OPO
13h 11m
2 stops
American Airlines Logo
8:20 am - 10:15 pm
OPO
-
DCA
18h 55m
2 stops
$595American Airlines
dom., abr. 19 - jue., abr. 23
TAP AIR PORTUGAL Logo
11:00 am - 11:10 am
DCA
-
PXO
19h 10m
2 stops
TAP AIR PORTUGAL Logo
12:00 pm - 8:20 am
PXO
-
DCA
25h 20m
2 stops
$1,565TAP 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 February and June, when the average cost of round-trip tickets is $1,755 and $1,473 respectively.

Good to know

Low seasonDecember
Cheapest flight$290
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly and prices are also 6% lower on average.
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 9342 reviews
6.6Food
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
Airline reviews

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

10.0 ExcellentDr. Joseph, Feb 2026
DCA - ORD
Read more United Airlines reviews

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

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.

First time flying Business with Tap, I think it was a very good experience. It beats many domestic US carriers, the food options were really great, authentic Portuguese food, wines & deserts. Next time will do the free 24-48 hour stopover in Lisbon or Porto for sure.

We upgraded to business class. Nice seat with lots of room but otherwise not impressive.

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.

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