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DCA - OPO

$549 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 6/16. 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 Flights from Reagan-National to Porto

 
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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Reagan-National to Porto.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Logo
11:00 am - 11:25 amDCA-OPO
19h 25m2 stops
Logo
7:30 pm - 9:00 pmOPO-DCA
29h 30m2 stops
$684
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Fri, Oct 17 - Tue, Oct 28
Air Canada Logo
4:35 pm - 9:25 amDCA-OPO
11h 50m1 stop
Air Canada Logo
12:50 pm - 9:51 pmOPO-DCA
14h 01m1 stop
$687Air Canada
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Wed, Sep 17 - Tue, Sep 30
United Airlines Logo
9:40 am - 9:35 amDCA-OPO
18h 55m1 stop
United Airlines Logo
12:50 pm - 12:58 pmOPO-DCA
29h 08m2 stops
$696United Airlines
Find Deal
Mon, Jun 16 - Tue, Jun 24
United Airlines Logo
3:05 pm - 6:55 amDCA-OPO
10h 50m1 stop
United Airlines Logo
12:10 pm - 9:48 pmOPO-DCA
14h 38m1 stop
$703United Airlines
Find Deal
Sun, Jul 6 - Thu, Jul 17
American Airlines Logo
11:40 am - 7:35 amDCA-OPO
14h 55m2 stops
American Airlines Logo
12:20 pm - 10:36 pmOPO-DCA
15h 16m2 stops
$717American Airlines
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Tue, May 6 - Tue, May 13
British Airways Logo
2:54 pm - 7:50 pmDCA-OPO
23h 56m2 stops
British Airways Logo
11:15 am - 8:00 amOPO-DCA
25h 45m2 stops
$737British Airways
Find Deal
Mon, Jul 7 - Fri, Jul 18
Delta Logo
5:00 pm - 3:30 pmDCA-OPO
17h 30m2 stops
Delta Logo
11:25 am - 11:30 pmOPO-DCA
17h 05m2 stops
$740Delta
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Tue, Jul 8 - Thu, Jul 17
Delta Logo
7:55 pm - 3:35 pmDCA-OPO
14h 40m2 stops
Delta Logo
11:25 am - 9:53 pmOPO-DCA
15h 28m2 stops
$746Delta
Find Deal
Sun, Jul 6 - Fri, Jul 18
American Airlines Logo
11:40 am - 7:35 amDCA-OPO
14h 55m2 stops
American Airlines Logo
8:15 am - 7:07 pmOPO-DCA
15h 52m2 stops
$777American Airlines
Find Deal
Tue, May 6 - Sun, May 11
British Airways Logo
6:00 am - 7:30 pmDCA-OPO
32h 30m2 stops
British Airways Logo
9:10 pm - 11:07 pmOPO-DCA
30h 57m2 stops
$780British Airways
Find Deal
Tue, Jun 10 - Mon, Jun 16

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

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.

Which airlines provide the cheapest flights from Reagan Washington National Airport to Porto?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest round-trip tickets from Reagan Washington National Airport to Porto were found on Air Canada ($687) and United Airlines ($696).
Find deals

Good to know

Low season

November

High season

May

Cheapest flight

$549
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly and prices are also 19% 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 $549 for a one-way ticket and $684 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?

    Star Alliance, oneworld, 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 8684 reviews
7.3Comfort
6.6Food
7.7Boarding
8.1Crew
7.1Entertainment
Airline reviews

Multiple delays and not straight answer from the United team

2.0 MediocreAlex, Apr 2025FLL - EWR
Read more United Airlines reviews

Multiple delays and not straight answer from the United team

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

leg space better than expected. two washrooms for one plane isn't enough.

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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