$340 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 9/7. 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$1,009
Porto
Porto2 stops$805
Faro
Faro2 stops$764
Funchal
Funchal1 stop$834
Ponta Delgada
Ponta Delgada1 stop$769
Lisbon
Lisbon2 stops$1,009
Porto
Porto2 stops$805
Faro
Faro2 stops$764
Funchal
Funchal1 stop$834
Ponta Delgada
Ponta Delgada1 stop$769

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, Nov 10 - Wed, Nov 18
KLM Logo
12:05 pm - 9:30 am
DCA
-
FAO
16h 25m
2 stops
KLM Logo
2:40 pm - 4:31 pm
FAO
-
DCA
30h 51m
2 stops
$764KLM
Mon, Aug 17 - Wed, Aug 26
United Airlines Logo
8:20 pm - 8:40 am
DCA
-
PDL
8h 20m
1 stop
United Airlines Logo
11:00 am - 9:46 am
PDL
-
DCA
26h 46m
1 stop
$769United Airlines
Mon, Aug 17 - Wed, Aug 26
Multiple Airlines Logo
11:30 am - 8:40 am
DCA
-
PDL
17h 10m
1 stop
Multiple Airlines Logo
9:35 am - 10:18 am
PDL
-
DCA
28h 43m
2 stops
$774Multiple Airlines
Mon, Aug 17 - Wed, Aug 26
Multiple Airlines Logo
4:30 pm - 8:40 am
DCA
-
PDL
12h 10m
1 stop
Multiple Airlines Logo
9:35 am - 10:18 am
PDL
-
DCA
28h 43m
2 stops
$775Multiple Airlines
Mon, Aug 17 - Wed, Aug 26
United Airlines Logo
5:55 pm - 8:40 am
DCA
-
PDL
10h 45m
1 stop
United Airlines Logo
11:00 am - 9:59 pm
PDL
-
DCA
14h 59m
1 stop
$776United Airlines
Mon, Aug 17 - Wed, Aug 26
Air Canada Logo
12:40 pm - 8:20 am
DCA
-
PDL
39h 40m
2 stops
Air Canada Logo
9:35 am - 12:00 pm
PDL
-
DCA
30h 25m
2 stops
$778Air Canada
Fri, Oct 16 - Thu, Dec 10
British Airways Logo
7:59 pm - 7:05 pm
DCA
-
OPO
18h 06m
2 stops
British Airways Logo
8:20 am - 10:15 pm
OPO
-
DCA
18h 55m
2 stops
$806British Airways
Tue, Sep 29 - Tue, Oct 6
Air Canada Logo
6:59 am - 5:35 pm
DCA
-
OPO
29h 36m
2 stops
Air Canada Logo
6:00 am - 9:50 pm
OPO
-
DCA
20h 50m
2 stops
$807Air Canada
Sun, Jul 19 - Wed, Jul 29
Lufthansa Logo
5:55 pm - 8:40 am
DCA
-
PDL
10h 45m
1 stop
Lufthansa Logo
9:35 am - 10:31 pm
PDL
-
DCA
16h 56m
1 stop
$839Lufthansa
Sat, Sep 26 - Wed, Oct 7
British Airways Logo
8:45 pm - 6:05 pm
DCA
-
FNC
40h 20m
2 stops
British Airways Logo
12:10 pm - 10:02 am
FNC
-
DCA
26h 52m
2 stops
$961British Airways
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 April, when tickets cost $0 (return) on average. On the other hand, the most expensive months are July and August, when the average cost of round-trip tickets is $1,767 and $1,470 respectively.

Good to know

Low seasonNovember
Cheapest flight$340
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Reagan Washington National Airport to Ponta Delgada

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 airline 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 9909 reviews
8.1Crew
7.1Entertainment
6.6Food
7.3Comfort
7.7Boarding
Airline reviews

Staff could’ve been a little more cordial. The men were much more friendlier than the women. My daughter and I also missed the 2nd to last meal as we were sleeping but that is on us.

8.0 ExcellentAmit, Jun 2026
IAD - CPT
Read more United Airlines reviews

Staff could’ve been a little more cordial. The men were much more friendlier than the women. My daughter and I also missed the 2nd to last meal as we were sleeping but that is on us.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

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.

Never nice, United Express partners always do an amazing job.

Being stick waiting for gate at ORD cause me to almost miss my connecting flight…being deaf United made no no effort to keep me updated as I couldn’t hear the PA

The flight was on time and the crew were great.

I was forced to gate check my carry on luggage. Somehow it did not arrive at my destination. I still have yet to receive my bag r days after arrival.

Boarding area is a mess. Lines not bounded and gate area too small. Food options (on this specific flight) were poor and you couldn’t pick part of it since it was like a mash of chicken and other unrecognisable stuff. Comfort of seats along with child noise made it difficult to get a good sleep. Last, the flight attendant that served my aisle was rude (others seemed fine) towards me and others.

Everything you need to know for your flight from Reagan-National to Portugal

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