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DCA - OPO

$463 Find Cheap Flights from Reagan Washington National Airport to Porto

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 Porto departing on 3/11. 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.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Porto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Porto, as well as popular online travel agencies
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Cheap Flight Deals from Reagan-National to Porto (DCA-OPO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Reagan-National to Porto 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.

Recent round-trip flight deals from Reagan-National to Porto

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Reagan-National to Porto.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:00 pm - 3:25 pmDCA-OPO
17h 25m2 stops
6:00 am - 7:43 pmOPO-DCA
17h 43m2 stops
$547Delta
Find Deal
Wed, Mar 5 - Wed, Mar 19
4:10 pm - 12:50 pmDCA-OPO
16h 40m2 stops
12:10 pm - 3:24 pmOPO-DCA
32h 14m2 stops
$598Air Canada
Find Deal
Sat, Mar 22 - Mon, Mar 31
4:10 pm - 3:00 pmDCA-OPO
18h 50m2 stops
6:30 am - 7:57 pmOPO-DCA
17h 27m2 stops
$628
Find Deal
Fri, Mar 21 - Fri, Mar 28
9:40 am - 7:20 pmDCA-OPO
29h 40m3 stops
5:35 pm - 9:00 pmOPO-DCA
31h 25m2 stops
$655
Find Deal
Sun, Mar 9 - Tue, Mar 25
1:12 pm - 3:40 pmDCA-OPO
21h 28m2 stops
12:35 pm - 7:42 pmOPO-DCA
12h 07m1 stop
$689United Airlines
Find Deal
Sun, Mar 30 - Sun, Apr 6
5:00 pm - 3:10 pmDCA-OPO
18h 10m2 stops
12:35 pm - 7:42 pmOPO-DCA
12h 07m1 stop
$818United Airlines
Find Deal
Sat, Mar 22 - Mon, Mar 31
1:15 pm - 7:35 amDCA-OPO
13h 20m2 stops
12:20 pm - 10:36 pmOPO-DCA
15h 16m2 stops
$966American Airlines
Find Deal
Mon, May 5 - Fri, May 16
4:15 pm - 10:55 amDCA-OPO
13h 40m1 stop
6:10 pm - 9:41 amOPO-DCA
20h 31m1 stop
$1,009TAP AIR PORTUGAL
Find Deal
Wed, Jun 11 - Wed, Jun 18
4:15 pm - 10:55 amDCA-OPO
13h 40m1 stop
6:00 pm - 6:59 pmOPO-DCA
29h 59m1 stop
$1,017TAP AIR PORTUGAL
Find Deal
Wed, May 28 - Sun, Jun 15
4:59 pm - 11:40 amDCA-OPO
13h 41m2 stops
8:15 am - 7:15 pmOPO-DCA
16h 00m2 stops
$1,468American Airlines
Find Deal
Fri, Jul 18 - Sun, Jul 27

Flights from Reagan-National to Porto - Travel Insights & Trends

Get data-powered insights and trends into flights from Reagan-National to Porto 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 Porto?

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 Porto, 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 Porto is February, where tickets cost $421 (return) on average. On the other hand, the most expensive months are January and July, where the average cost of round-trip tickets is $1,615 and $1,525 respectively.

Good to know

Low season

September

High season

March

Cheapest flight

$463
Best time to beat the crowds but there is an average 17% increase in price.
Most popular time to fly and prices are also 37% lower on average.
Flight from Reagan Washington National Airport to Porto

When to book flights from Reagan-National to Porto

Are your dates flexible? Find out the best times to travel from Reagan-National to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Reagan Washington National Airport to Porto flights

  • What is the cheapest flight from Washington, D.C. Reagan-National Airport to Porto?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Reagan-National Airport to Porto was $463 for a one-way ticket and $547 for a round-trip.

  • Do I need a passport to fly between Reagan Washington National Airport and Porto?

    Yes, you’ll need a passport to travel to Porto from Reagan Washington National Airport.

  • Which airports will I be using when flying from Reagan Washington National Airport to Porto?

    When flying out of Reagan Washington National Airport you will be using Washington, D.C. Reagan-National. You will be landing at Porto, also known as Porto.

  • Which aircraft models fly most regularly from Reagan Washington National Airport to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Reagan Washington National Airport to Porto?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Reagan Washington National Airport and Porto, with Star Alliance being the most commonly used for this route.

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

    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 Porto.

  • 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 Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Reagan Washington National Airport 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 Porto?

    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 to Porto with an airline and back to Reagan Washington National Airport with another airline. Booking your flights between Reagan Washington National Airport and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Reagan Washington National Airport to Porto?

    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 to Porto from Reagan Washington National Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Reagan-National to Porto

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Reagan-National to Porto? 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 8765 reviews
8.1Crew
7.7Boarding
7.1Entertainment
6.7Food
7.3Comfort
Airline reviews

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

4.0 OkayDonald, Feb 2025EGE - IAH
Read more United Airlines reviews

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

The tv monitor in front of my seat was not responding. The flight crew reset it and it still didn’t work.

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

Liked nothing. As per previous segment it was delay delay delay.

Terrible. First of all we were delayed 4 3/4 hours departing Honolulu. As we had to leave our condo and the rental car had to be returned we had to go to the airport. Even though we had a business class boarding pass to Washington, since we did not have business class to Montreal we could not access the lounge without paying a $59 fee each. This does not make sense to us. Since we could not meet our original connection United booked us to Montreal via New York LaGuardia on Air Canada. In Washington a further delay got us into LaGuardia too late to make our connection to Montreal so we were booked on another Air Canada flight 3 hours later. We were originally scheduled to arrive in Montreal at 10:40 and arrived at 19:55. A totally exhausting day, United did not offer a meal voucher or any type of compensation. Air Canada did give us a digital meal voucher. The food in United business class is poor among all meals offered. The pods look nice but are not that confortable. Overall would not fly on United again.

Plenty of room for me and the cat in Premium Economy. Seat was comfortable. Boarding was a breeze. The lady at the special check-in desk was great, super helpful and professional.

I completely missed my flight because the first leg was longer than planned. I had to sleep overnight in the airport because no accommodation was provided and then sent to Trinidad in the morning with an anticipated 7 hour layover before my flight to Georgetown which was now with Caribbean Airlines. I tried twice with customer service to see if they could put me on an earlier flight which had seats available but was told it wasn’t possible.

First class felt like economy, seats were horrible, food was horrible, staff inattentive

EVen warmer in the plane it think it was 24+ degrees

The flying experience was great. The flight was on time with no boarding issues during a peak travel period. The short cut baggage drop and process was not smooth and efficient at Dulles.

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Lamego
Guimarães
Pinhao
Viseu
Esposende
Ponte de Lima
Arcos de Valdevez
Baiao
Santa Maria da Feira
Amares

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

Information on your arrival and departure airports

Porto (OPO)
Reagan Washington National Airport (DCA)

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