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Cheap flights from Washington, D.C. Reagan-National Airport to Porto from $323

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 1/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
United Airlines Logo
8:10 pm - 9:30 amDCA-OPO
9h 20m1 stop
United Airlines Logo
12:35 pm - 9:35 pmOPO-DCA
13h 00m1 stop
$445United Airlines
Find Deal
lun., mar. 9 - mar., mar. 17
Multiple Airlines Logo
11:05 am - 11:15 amDCA-OPO
19h 10m2 stops
Multiple Airlines Logo
6:00 am - 8:55 amOPO-DCA
30h 55m2 stops
$449Multiple Airlines
Find Deal
lun., mar. 2 - mar., mar. 10
American Airlines Logo
12:10 pm - 7:40 amDCA-OPO
14h 30m2 stops
American Airlines Logo
8:20 am - 6:56 pmOPO-DCA
15h 36m2 stops
$451American Airlines
Find Deal
mié., ene. 14 - mié., ene. 21
United Airlines Logo
4:10 pm - 9:30 amDCA-OPO
12h 20m1 stop
United Airlines Logo
6:00 am - 8:59 pmOPO-DCA
18h 59m2 stops
$459United Airlines
Find Deal
lun., mar. 2 - mar., mar. 10
Iberia Logo
3:21 pm - 11:45 amDCA-OPO
15h 24m2 stops
Iberia Logo
8:20 am - 10:35 pmOPO-DCA
19h 15m2 stops
$460Iberia
Find Deal
mar., feb. 24 - mar., mar. 3
Air Canada Logo
6:00 am - 12:05 pmDCA-OPO
25h 05m2 stops
Air Canada Logo
6:00 am - 10:23 amOPO-DCA
57h 23m2 stops
$469Air Canada
Find Deal
lun., ene. 12 - lun., ene. 26
United Airlines Logo
6:00 pm - 9:30 amDCA-OPO
11h 30m1 stop
United Airlines Logo
12:35 pm - 9:35 pmOPO-DCA
13h 00m1 stop
$470United Airlines
Find Deal
dom., mar. 8 - mar., mar. 17
Air Canada Logo
6:00 am - 12:05 pmDCA-OPO
25h 05m2 stops
Air Canada Logo
6:00 am - 8:55 amOPO-DCA
31h 55m2 stops
$471Air Canada
Find Deal
jue., ene. 15 - jue., ene. 22
Delta Logo
11:00 am - 10:30 amDCA-OPO
19h 30m2 stops
Delta Logo
11:25 am - 7:22 amOPO-DCA
23h 57m2 stops
$478Delta
Find Deal
lun., mar. 9 - mié., mar. 18
Delta Logo
11:00 am - 10:30 amDCA-OPO
19h 30m2 stops
Delta Logo
11:15 am - 5:49 pmOPO-DCA
34h 34m2 stops
$479Delta
Find Deal
lun., mar. 9 - lun., mar. 16

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

Our best Iberia deals on Washington, D.C. Reagan-National Airport to Porto flight tickets
Iberia
Feb 24
DCA3:21 pmWashington, D.C. Reagan-National
15h 24m
2 stops
OPO11:45 amPorto
Mar 3
OPO8:20 amPorto
19h 15m
2 stops
DCA10:35 pmWashington, D.C. Reagan-National
$460
Find similar
Iberia
Jan 29
DCA1:35 pmWashington, D.C. Reagan-National
13h 05m
2 stops
OPO7:40 amPorto
Feb 7
OPO8:20 amPorto
19h 27m
2 stops
DCA10:47 pmWashington, D.C. Reagan-National
$560
Find similar
Iberia
Dec 13
DCA6:30 pmWashington, D.C. Reagan-National
12h 15m
2 stops
OPO11:45 amPorto
Feb 2
OPO8:20 amPorto
15h 36m
2 stops
DCA6:56 pmWashington, D.C. Reagan-National
$798
Find similar

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

Our best British Airways deals on Washington, D.C. Reagan-National Airport to Porto flight tickets
British Airways
Jan 10
DCA8:45 pmWashington, D.C. Reagan-National
38h 55m
2 stops
OPO4:40 pmPorto
Jan 19
OPO5:30 pmPorto
28h 20m
2 stops
DCA4:50 pmWashington, D.C. Reagan-National
$486
Find similar
British Airways
Feb 27
DCA1:44 pmWashington, D.C. Reagan-National
24h 16m
2 stops
OPO7:00 pmPorto
Mar 5
OPO8:20 amPorto
15h 38m
2 stops
DCA6:58 pmWashington, D.C. Reagan-National
$530
Find similar
British Airways
Feb 27
DCA6:06 amWashington, D.C. Reagan-National
31h 54m
2 stops
OPO7:00 pmPorto
Mar 4
OPO6:30 pmPorto
29h 27m
2 stops
DCA6:57 pmWashington, D.C. Reagan-National
$531
Find similar

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 diciembre 2, 2025.
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

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

lun. 3/9

8:10 pm-9:30 am

1 stop9h 20m

Porto

mar. 3/17

12:35 pm-9:35 pm

1 stop13h 00m

$445

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

lun. 3/2

11:05 am-11:15 am

2 stops19h 10m

Porto

mar. 3/10

6:00 am-8:55 am

2 stops30h 55m

$449

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mié. 1/14

12:10 pm-7:40 am

2 stops14h 30m

Porto

mié. 1/21

8:20 am-6:56 pm

2 stops15h 36m

$451

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

lun. 3/2

4:10 pm-9:30 am

1 stop12h 20m

Porto

mar. 3/10

6:00 am-8:59 pm

2 stops18h 59m

$459

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

mar. 2/24

3:21 pm-11:45 am

2 stops15h 24m

Porto

mar. 3/3

8:20 am-10:35 pm

2 stops19h 15m

$460

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

lun. 1/12

6:00 am-12:05 pm

2 stops25h 05m

Porto

lun. 1/26

6:00 am-10:23 am

2 stops57h 23m

$469

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

dom. 3/8

6:00 pm-9:30 am

1 stop11h 30m

Porto

mar. 3/17

12:35 pm-9:35 pm

1 stop13h 00m

$470

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

jue. 1/15

6:00 am-12:05 pm

2 stops25h 05m

Porto

jue. 1/22

6:00 am-8:55 am

2 stops31h 55m

$471

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

lun. 3/9

11:00 am-10:30 am

2 stops19h 30m

Porto

mié. 3/18

11:25 am-7:22 am

2 stops23h 57m

$478

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

lun. 3/9

11:00 am-10:30 am

2 stops19h 30m

Porto

lun. 3/16

11:15 am-5:49 pm

2 stops34h 34m

$479

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto from

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

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

What is the cheapest day to depart on your flight to Porto?

The cheapest day to depart on your flight to Porto is on a Sunday when prices can be found for as low as $613. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $779. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

What is the cheapest time of day to depart on your flight to Porto?

In the afternoon is the cheapest time of day to fly from Washington, D.C. Reagan-National Airport to Porto when you can find flight prices for as low as $698. Flying to Porto in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $836 on average. Flights to Porto from Washington, D.C. Reagan-National Airport at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You could potentially save up to 7% 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

9h 20m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Porto takes 9h 20m
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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  • 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 9h 20m.

  • 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 many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Porto Airport?

  • 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.

  • What is the most popular airline from Washington, D.C. Reagan-National Airport to Porto?

Best airlines flying from Washington, D.C. Reagan-National Airport to Porto

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Porto with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $520Free CancellationRating
7.4
9,065 reviews
Search United Airlines flights

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
Guimarães
Lamego
Esposende
Chaves
Viseu
Espinho
Ponte de Lima
Arcos de Valdevez
Pinhao
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Porto. momondo saves you time and could save you money on your trip.

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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