Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Porto to Washington, D.C. from $352

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to Washington, D.C. departing on 9/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Porto to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:00 am - 7:12 pm
OPO
-
DCA
19h 12m
2 stops
Delta Logo
1:30 pm - 10:35 am
DCA
-
OPO
16h 05m
2 stops
$636Delta
Thu, Nov 19 - Wed, Dec 30
United Airlines Logo
6:00 am - 5:23 pm
OPO
-
DCA
16h 23m
2 stops
United Airlines Logo
3:00 pm - 9:30 am
DCA
-
OPO
13h 30m
1 stop
$694United Airlines
Thu, Nov 19 - Wed, Dec 30
United Airlines Logo
12:35 pm - 8:38 pm
OPO
-
DCA
13h 03m
1 stop
United Airlines Logo
4:00 pm - 9:30 am
DCA
-
OPO
12h 30m
1 stop
$718United Airlines
Thu, Nov 19 - Wed, Dec 30
Delta Logo
5:55 am - 7:52 pm
OPO
-
DCA
18h 57m
2 stops
Delta Logo
11:00 am - 10:20 am
DCA
-
OPO
18h 20m
1 stop
$722Delta
Thu, Jul 2 - Sat, Jul 18
Delta Logo
9:25 am - 10:59 pm
OPO
-
DCA
18h 34m
2 stops
Delta Logo
11:47 am - 8:30 am
DCA
-
OPO
15h 43m
2 stops
$724Delta
Tue, Jul 21 - Mon, Jul 27
Delta Logo
5:55 am - 5:43 pm
OPO
-
DCA
16h 48m
2 stops
Delta Logo
9:12 am - 10:20 am
DCA
-
OPO
20h 08m
2 stops
$726Delta
Thu, Jul 2 - Sat, Jul 18
American Airlines Logo
12:25 pm - 11:31 pm
OPO
-
DCA
16h 06m
2 stops
American Airlines Logo
5:00 pm - 11:45 am
DCA
-
OPO
13h 45m
2 stops
$728American Airlines
Thu, Jul 16 - Thu, Jul 23
Delta Logo
5:55 am - 7:52 pm
OPO
-
DCA
18h 57m
2 stops
Delta Logo
11:00 am - 10:20 am
DCA
-
OPO
18h 20m
1 stop
$729Delta
Thu, Jul 2 - Sat, Jul 18
KLM Logo
1:25 pm - 5:00 pm
OPO
-
DCA
32h 35m
1 stop
KLM Logo
4:56 pm - 10:20 am
DCA
-
OPO
12h 24m
1 stop
$730KLM
Thu, Jul 2 - Sat, Jul 18
American Airlines Logo
12:25 pm - 11:31 pm
OPO
-
DCA
16h 06m
2 stops
American Airlines Logo
2:54 pm - 11:45 am
DCA
-
OPO
15h 51m
2 stops
$731American Airlines
Thu, Jul 2 - Sat, Jul 18

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

American Airlines flights from Porto to Washington, D.C. Reagan-National Airport

Our best American Airlines deals on Porto to Washington, D.C. Reagan-National Airport flight tickets
American Airlines
Jun 22
OPO12:25 pmPorto
15h 49m
2 stops
DCA11:14 pmWashington, D.C. Reagan-National
Jul 7
DCA11:56 amWashington, D.C. Reagan-National
14h 44m
2 stops
OPO7:40 amPorto
$627
American Airlines
Jul 16
OPO12:25 pmPorto
16h 06m
2 stops
DCA11:31 pmWashington, D.C. Reagan-National
Jul 23
DCA5:00 pmWashington, D.C. Reagan-National
13h 45m
2 stops
OPO11:45 amPorto
$728
American Airlines
Jul 2
OPO12:25 pmPorto
16h 06m
2 stops
DCA11:31 pmWashington, D.C. Reagan-National
Jul 18
DCA2:54 pmWashington, D.C. Reagan-National
15h 51m
2 stops
OPO11:45 amPorto
$731

Air France flights from Porto to Washington, D.C. Reagan-National Airport

Our best Air France deals on Porto to Washington, D.C. Reagan-National Airport flight tickets
Air France
Jul 21
OPO12:25 pmPorto
15h 34m
1 stop
DCA10:59 pmWashington, D.C. Reagan-National
Jul 27
DCA11:00 amWashington, D.C. Reagan-National
18h 30m
1 stop
OPO10:30 amPorto
$744
Air France
Jul 21
OPO12:25 pmPorto
15h 34m
1 stop
DCA10:59 pmWashington, D.C. Reagan-National
Jul 27
DCA5:00 pmWashington, D.C. Reagan-National
12h 30m
1 stop
OPO10:30 amPorto
$746

momondo Fare Finder

 
Customize your flight search to find flights from Porto to Washington, D.C. Reagan-National Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 20, 2026.
Use the filters below to find and compare flights from Porto to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 11/19

5:00 am-7:12 pm

2 stops19h 12m

Washington, D.C. Reagan-National

Wed 12/30

1:30 pm-10:35 am

2 stops16h 05m

$636

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 11/19

6:00 am-5:23 pm

2 stops16h 23m

Washington, D.C. Reagan-National

Wed 12/30

3:00 pm-9:30 am

1 stop13h 30m

$694
Quickest round-trip

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 11/19

12:35 pm-8:38 pm

1 stop13h 03m

Washington, D.C. Reagan-National

Wed 12/30

4:00 pm-9:30 am

1 stop12h 30m

$718

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 7/2

5:55 am-7:52 pm

2 stops18h 57m

Washington, D.C. Reagan-National

Sat 7/18

11:00 am-10:20 am

1 stop18h 20m

$722

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Tue 7/21

9:25 am-10:59 pm

2 stops18h 34m

Washington, D.C. Reagan-National

Mon 7/27

11:47 am-8:30 am

2 stops15h 43m

$724

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 7/2

5:55 am-5:43 pm

2 stops16h 48m

Washington, D.C. Reagan-National

Sat 7/18

9:12 am-10:20 am

2 stops20h 08m

$726

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 7/16

12:25 pm-11:31 pm

2 stops16h 06m

Washington, D.C. Reagan-National

Thu 7/23

5:00 pm-11:45 am

2 stops13h 45m

$728

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 7/2

5:55 am-7:52 pm

2 stops18h 57m

Washington, D.C. Reagan-National

Sat 7/18

11:00 am-10:20 am

1 stop18h 20m

$729

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 7/2

1:25 pm-5:00 pm

1 stop32h 35m

Washington, D.C. Reagan-National

Sat 7/18

4:56 pm-10:20 am

1 stop12h 24m

$730

PortoWashington, D.C.

OPO - DCA

OPODCA

Porto

Thu 7/2

12:25 pm-11:31 pm

2 stops16h 06m

Washington, D.C. Reagan-National

Sat 7/18

2:54 pm-11:45 am

2 stops15h 51m

$731

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Porto to Washington, D.C. Reagan-National Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Porto to Washington, D.C. Reagan-National Airport flights?

You could potentially save up to 56% on your flight if you consider stops on a Porto to Washington, D.C. Reagan-National Airport flight.

When to book flights from Porto to Washington, D.C. Reagan-National Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Porto to Washington, D.C. Reagan-National Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Porto to Washington, D.C. Reagan-National Airport (OPO to DCA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Porto to Washington, D.C. Reagan-National Airport

Fastest flight time

11h 23m

Direct flights

None
The fastest flight from Porto to Washington, D.C. Reagan-National Airport takes 11h 23m
There are no direct flights from Porto to Washington, D.C. Reagan-National Airport. There are no popular flight routes from Porto to Washington, D.C. Reagan-National Airport.
Search flight deals

Frequently asked questions about flying from Porto to Washington, D.C. Reagan-National Airport

  • How far is Porto to Washington, D.C. Reagan-National by plane?

    The straight-line distance from Porto to Washington, D.C. Reagan-National is 3524.8 mi. Typically, this will take 11h 23m by plane in normal conditions.

  • When did momondo last update prices for flights from Porto Airport to Washington, D.C. Reagan-National Airport?

    Prices for flights from Porto Airport to Washington, D.C. Reagan-National Airport were last updated today.

  • How old do you have to be to fly from Porto Airport to Washington, D.C. Reagan-National Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Porto Airport to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The required travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Waldorf
Woodbridge
Laurel
Fredericksburg
Gaithersburg
Colonial Beach
Rockville
Linthicum Heights
Silver Spring
Towson
Manassas
Tysons
Springfield
Bethesda
Fairfax
College Park

Why use momondo?

Why should I use momondo to find a flight deal from Porto to Washington, D.C.?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Porto to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Porto to Washington, D.C. with flexible booking policies on momondo?

Flights from Porto to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Porto to Washington, D.C.?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Porto.

I’m not ready to book a flight from Porto to Washington, D.C. right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Porto to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

An easier way to manage your Washington, D.C. Reagan-National Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 7/20
Mon 7/27
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.