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Cheap flights from Washington, D.C. Reagan-National Airport to Porto from $333

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Reagan-National Airport to Porto departing on 11/24. 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 Washington, D.C. Reagan-National Airport to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
5:10 pm - 11:45 amDCA  Washington, D.C. Reagan-National-OPO Porto
13h 35m2 stops Boston Logan Intl Madrid Barajas
Iberia Logo
8:20 am - 7:10 pmOPO  Porto-DCA Washington, D.C. Reagan-National
15h 50m2 stops Madrid Barajas Boston Logan Intl
$719Iberia
Sun, Nov 1 - Sat, Nov 7
Multiple Airlines Logo
4:00 pm - 12:05 pmDCA  Washington, D.C. Reagan-National-OPO Porto
15h 05m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National
Multiple Airlines Logo
8:20 am - 7:15 pmOPO  Porto-DCA Washington, D.C. Reagan-National
15h 55m2 stops Madrid Barajas New York John F Kennedy Intl
$720Multiple Airlines
Tue, Nov 24 - Tue, Dec 1
Multiple Airlines Logo
4:00 pm - 12:00 pmDCA  Washington, D.C. Reagan-National-OPO Porto
15h 00m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National
Multiple Airlines Logo
8:40 pm - 7:19 pmOPO  Porto-DCA Washington, D.C. Reagan-National
27h 39m2 stops Madrid Barajas New York John F Kennedy Intl
$729Multiple Airlines
Wed, Nov 4 - Mon, Nov 9
Iberia Logo
6:30 pm - 11:45 amDCA  Washington, D.C. Reagan-National-OPO Porto
12h 15m2 stops Boston Logan Intl Madrid Barajas
Iberia Logo
8:40 pm - 6:57 pmOPO  Porto-DCA Washington, D.C. Reagan-National
27h 17m2 stops Madrid Barajas New York John F Kennedy Intl
$730Iberia
Wed, Dec 2 - Sun, Dec 6
Multiple Airlines Logo
4:00 pm - 12:05 pmDCA  Washington, D.C. Reagan-National-OPO Porto
15h 05m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National
Multiple Airlines Logo
4:40 pm - 8:05 pmOPO  Porto-DCA Washington, D.C. Reagan-National
32h 25m2 stops Madrid Barajas Chicago O'Hare Intl
$734Multiple Airlines
Tue, Nov 24 - Mon, Nov 30
Multiple Airlines Logo
4:00 pm - 12:05 pmDCA  Washington, D.C. Reagan-National-OPO Porto
15h 05m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National
Multiple Airlines Logo
8:40 pm - 8:05 pmOPO  Porto-DCA Washington, D.C. Reagan-National
28h 25m2 stops Madrid Barajas Chicago O'Hare Intl
$734Multiple Airlines
Tue, Nov 24 - Mon, Nov 30
United Airlines Logo
4:05 pm - 9:30 amDCA  Washington, D.C. Reagan-National-OPO Porto
12h 25m1 stop Newark
United Airlines Logo
6:00 am - 8:11 pmOPO  Porto-DCA Washington, D.C. Reagan-National
19h 11m2 stops Frankfurt am Main Chicago O'Hare Intl
$741United Airlines
Mon, Nov 9 - Tue, Nov 17
United Airlines Logo
9:05 am - 9:30 amDCA  Washington, D.C. Reagan-National-OPO Porto
19h 25m1 stop Newark
United Airlines Logo
6:00 am - 6:15 pmOPO  Porto-DCA Washington, D.C. Reagan-National
17h 15m2 stops Frankfurt am Main Chicago O'Hare Intl
$741United Airlines
Sun, Nov 8 - Thu, Nov 12
United Airlines Logo
6:20 pm - 9:30 amDCA  Washington, D.C. Reagan-National-OPO Porto
10h 10m1 stop Newark
United Airlines Logo
6:00 am - 8:11 pmOPO  Porto-DCA Washington, D.C. Reagan-National
19h 11m2 stops Frankfurt am Main Chicago O'Hare Intl
$741United Airlines
Mon, Nov 9 - Fri, Nov 13
United Airlines Logo
3:10 pm - 9:30 amDCA  Washington, D.C. Reagan-National-OPO Porto
13h 20m1 stop Newark
United Airlines Logo
6:00 am - 7:15 pmOPO  Porto-DCA Washington, D.C. Reagan-National
18h 15m2 stops Frankfurt am Main Chicago O'Hare Intl
$741United Airlines
Sun, Nov 8 - Tue, Nov 17

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

Our best Delta deals on Washington, D.C. Reagan-National Airport to Porto flight tickets
Delta
Nov 4
DCA5:05 pmWashington, D.C. Reagan-National
11h 00m
1 stop
OPO9:05 amPorto
Nov 12
OPO11:15 amPorto
16h 33m
2 stops
DCA10:48 pmWashington, D.C. Reagan-National
$743
Delta
Nov 2
DCA1:20 pmWashington, D.C. Reagan-National
16h 15m
2 stops
OPO10:35 amPorto
Nov 12
OPO5:00 amPorto
18h 40m
2 stops
DCA6:40 pmWashington, D.C. Reagan-National
$747
Delta
Nov 23
DCA11:05 amWashington, D.C. Reagan-National
18h 30m
2 stops
OPO10:35 amPorto
Dec 4
OPO5:55 amPorto
21h 53m
2 stops
DCA10:48 pmWashington, D.C. Reagan-National
$754

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

Our best United Airlines deals on Washington, D.C. Reagan-National Airport to Porto flight tickets
United Airlines
Nov 8
DCA3:10 pmWashington, D.C. Reagan-National
13h 20m
1 stop
OPO9:30 amPorto
Nov 17
OPO6:00 amPorto
18h 15m
2 stops
DCA7:15 pmWashington, D.C. Reagan-National
$741
United Airlines
Nov 3
DCA3:10 pmWashington, D.C. Reagan-National
13h 20m
1 stop
OPO9:30 amPorto
Nov 13
OPO6:00 amPorto
31h 24m
2 stops
DCA8:24 amWashington, D.C. Reagan-National
$746
United Airlines
Nov 23
DCA6:20 pmWashington, D.C. Reagan-National
10h 10m
1 stop
OPO9:30 amPorto
Dec 4
OPO12:35 pmPorto
14h 18m
1 stop
DCA9:53 pmWashington, D.C. Reagan-National
$750

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National Airport to Porto 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 August 6, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Porto

DCA Washington, D.C. Reagan-National - OPO Porto

DCAOPO

Washington, D.C. Reagan-National

Sun 11/1

5:10 pm-11:45 am

2 stops13h 35m

Porto

Sat 11/7

8:20 am-7:10 pm

2 stops15h 50m

$719

Washington, D.C.Porto

DCA Washington, D.C. Reagan-National - OPO Porto

DCAOPO

Washington, D.C. Reagan-National

Tue 11/24

4:00 pm-12:05 pm

2 stops15h 05m

Porto

Tue 12/1

8:20 am-7:15 pm

2 stops15h 55m

$720

Washington, D.C.Porto

DCA Washington, D.C. Reagan-National - OPO Porto

DCAOPO

Washington, D.C. Reagan-National

Wed 11/4

4:00 pm-12:00 pm

2 stops15h 00m

Porto

Mon 11/9

8:40 pm-7:19 pm

2 stops27h 39m

$729

Washington, D.C.Porto

DCA Washington, D.C. Reagan-National - OPO Porto

DCAOPO

Washington, D.C. Reagan-National

Wed 12/2

6:30 pm-11:45 am

2 stops12h 15m

Porto

Sun 12/6

8:40 pm-6:57 pm

2 stops27h 17m

$730

Washington, D.C.Porto

DCA Washington, D.C. Reagan-National - OPO Porto

DCAOPO

Washington, D.C. Reagan-National

Tue 11/24

4:00 pm-12:05 pm

2 stops15h 05m

Porto

Mon 11/30

4:40 pm-8:05 pm

2 stops32h 25m

$734

Washington, D.C.Porto

DCA Washington, D.C. Reagan-National - OPO Porto

DCAOPO

Washington, D.C. Reagan-National

Tue 11/24

4:00 pm-12:05 pm

2 stops15h 05m

Porto

Mon 11/30

8:40 pm-8:05 pm

2 stops28h 25m

$734

Washington, D.C.Porto

DCA Washington, D.C. Reagan-National - OPO Porto

DCAOPO

Washington, D.C. Reagan-National

Mon 11/9

4:05 pm-9:30 am

1 stop12h 25m

Porto

Tue 11/17

6:00 am-8:11 pm

2 stops19h 11m

$741

Washington, D.C.Porto

DCA Washington, D.C. Reagan-National - OPO Porto

DCAOPO

Washington, D.C. Reagan-National

Sun 11/8

9:05 am-9:30 am

1 stop19h 25m

Porto

Thu 11/12

6:00 am-6:15 pm

2 stops17h 15m

$741
Quickest round-trip

Washington, D.C.Porto

DCA Washington, D.C. Reagan-National - OPO Porto

DCAOPO

Washington, D.C. Reagan-National

Mon 11/9

6:20 pm-9:30 am

1 stop10h 10m

Porto

Fri 11/13

6:00 am-8:11 pm

2 stops19h 11m

$741

Washington, D.C.Porto

DCA Washington, D.C. Reagan-National - OPO Porto

DCAOPO

Washington, D.C. Reagan-National

Sun 11/8

3:10 pm-9:30 am

1 stop13h 20m

Porto

Tue 11/17

6:00 am-7:15 pm

2 stops18h 15m

$741

Flights are sorted by cheapest round-trip flights first.

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

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

You could potentially save up to 10% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to Porto flight.

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

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

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

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

Fastest flight time

10h 30m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Porto takes 10h 30m
There are no direct flights from Washington, D.C. Reagan-National Airport to Porto. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Porto.
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Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Porto

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

    A flight from Washington, D.C. Reagan-National to Porto will travel around 3524.8 mi. By plane, this route typically takes 10h 30m.

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

    Prices for flights from Washington, D.C. Reagan-National Airport to Porto Airport refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Reagan-National Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The travel and health documents required for your trip to Porto Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Braga
Aveiro
Matosinhos
Pinhao
Esposende
Lamego
Chaves
Arcos de Valdevez
Guimarães
Viseu
Espinho
Ponte de Lima
Mesao Frio
Penafiel
Baiao

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

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

All flight searches from Washington, D.C. to Porto on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Porto from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Washington, D.C. to Porto flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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