$346 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 11/1. 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$885
Porto
Porto2 stops$756
Faro
Faro3 stops$894
Funchal
Funchal3 stops$945
Ponta Delgada
Ponta Delgada1 stop$849
Lisbon
Lisbon2 stops$885
Porto
Porto2 stops$756
Faro
Faro3 stops$894
Funchal
Funchal3 stops$945
Ponta Delgada
Ponta Delgada1 stop$849

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

Mon, Sep 21 - Tue, Sep 29
Multiple Airlines Logo
6:00 pm - 11:45 am
DCA
-
OPO
12h 45m
2 stops
Multiple Airlines Logo
8:20 am - 9:30 pm
OPO
-
DCA
18h 10m
2 stops
$756Multiple Airlines
Mon, Oct 19 - Tue, Oct 27
Delta Logo
5:00 pm - 10:30 am
DCA
-
OPO
12h 30m
1 stop
Delta Logo
5:00 am - 11:04 pm
OPO
-
DCA
22h 04m
2 stops
$773Delta
Mon, Oct 19 - Tue, Oct 27
Delta Logo
1:45 pm - 10:30 am
DCA
-
OPO
15h 45m
2 stops
Delta Logo
5:00 am - 11:04 pm
OPO
-
DCA
22h 04m
2 stops
$778Delta
Sun, Aug 16 - Tue, Aug 25
United Airlines Logo
1:00 pm - 6:55 am
DCA
-
OPO
12h 55m
1 stop
United Airlines Logo
12:15 pm - 10:23 am
OPO
-
DCA
27h 08m
2 stops
$791United Airlines
Mon, Aug 3 - Thu, Sep 3
United Airlines Logo
6:00 am - 9:45 am
DCA
-
OPO
22h 45m
1 stop
United Airlines Logo
11:50 am - 10:18 am
OPO
-
DCA
27h 28m
1 stop
$792United Airlines
Mon, Jun 1 - Tue, Jun 16
Multiple Airlines Logo
6:59 am - 10:00 pm
DCA
-
OPO
34h 01m
3 stops
Multiple Airlines Logo
10:25 pm - 7:58 pm
OPO
-
DCA
26h 33m
3 stops
$793Multiple Airlines
Mon, Sep 21 - Tue, Sep 29
American Airlines Logo
2:54 pm - 11:45 am
DCA
-
OPO
15h 51m
2 stops
American Airlines Logo
8:20 am - 9:30 pm
OPO
-
DCA
18h 10m
2 stops
$815American Airlines
Mon, Jun 8 - Wed, Jun 17
Air Canada Logo
8:40 pm - 9:20 am
DCA
-
LIS
31h 40m
2 stops
Air Canada Logo
12:55 pm - 7:58 pm
LIS
-
DCA
12h 03m
1 stop
$885Air Canada
Sat, Jun 6 - Sat, Jun 13
Air Canada Logo
6:59 am - 9:20 am
DCA
-
LIS
21h 21m
2 stops
Air Canada Logo
5:05 am - 12:01 pm
LIS
-
DCA
35h 56m
3 stops
$900Air Canada
Mon, Jul 20 - Tue, Aug 25
KLM Logo
7:37 pm - 7:30 pm
DCA
-
FAO
18h 53m
2 stops
KLM Logo
10:00 am - 10:59 pm
FAO
-
DCA
17h 59m
2 stops
$923KLM
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 June, when the average cost of round-trip tickets is $1,767 and $1,227 respectively.

Good to know

Low seasonNovember
Cheapest flight$346
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 11% 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 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 9684 reviews
7.3Comfort
6.6Food
8.1Crew
7.7Boarding
7.1Entertainment
Airline reviews

Vegetarian selection could be better. Bread was too hard to chew.

8.0 ExcellentAnonymous, Apr 2026
IAD - FRA
Read more United Airlines reviews

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

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.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

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.

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

Information on your arrival and departure airports