Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from District of Columbia to Porto from $241

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from District of Columbia to Porto departing on 5/6. 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
0 bags

Discover deals from 900+ travel sites with momondo.

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

Find the cheapest flights from District of Columbia to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
10:35 pm - 12:40 am
IAD
-
OPO
21h 05m
1 stop
TAP AIR PORTUGAL Logo
9:00 am - 8:35 pm
OPO
-
IAD
16h 35m
1 stop
$509TAP AIR PORTUGAL
Mon, Apr 13 - Wed, May 6
TAP AIR PORTUGAL Logo
5:30 pm - 5:00 pm
IAD
-
OPO
18h 30m
1 stop
TAP AIR PORTUGAL Logo
6:55 am - 2:35 pm
OPO
-
IAD
12h 40m
1 stop
$514TAP AIR PORTUGAL
Tue, Feb 24 - Tue, Mar 3
TAP AIR PORTUGAL Logo
5:45 pm - 5:00 pm
IAD
-
OPO
18h 15m
1 stop
TAP AIR PORTUGAL Logo
10:35 pm - 3:05 pm
OPO
-
IAD
21h 30m
1 stop
$529TAP AIR PORTUGAL
Thu, Apr 9 - Mon, Apr 13
Lufthansa Logo
11:55 pm - 11:40 pm
IAD
-
OPO
19h 45m
1 stop
Lufthansa Logo
6:20 am - 7:25 pm
OPO
-
IAD
18h 05m
1 stop
$534Lufthansa
Thu, Mar 19 - Sun, Mar 29
SWISS Logo
8:20 pm - 6:30 pm
IAD
-
OPO
17h 10m
1 stop
SWISS Logo
7:20 pm - 4:45 pm
OPO
-
IAD
26h 25m
1 stop
$537SWISS
Wed, Apr 15 - Mon, Apr 20
Lufthansa Logo
7:00 pm - 11:40 am
IAD
-
OPO
12h 40m
1 stop
Lufthansa Logo
6:00 am - 4:50 pm
OPO
-
IAD
14h 50m
1 stop
$542Lufthansa
Wed, Mar 11 - Tue, Mar 17
United Airlines Logo
6:00 pm - 9:30 am
DCA
-
OPO
11h 30m
1 stop
United Airlines Logo
6:00 am - 8:56 am
OPO
-
DCA
31h 56m
2 stops
$583United Airlines
Sun, Mar 22 - Wed, Apr 1
Delta Logo
3:05 pm - 3:25 pm
DCA
-
OPO
19h 20m
2 stops
Delta Logo
5:00 am - 5:30 pm
OPO
-
DCA
17h 30m
2 stops
$588Delta
Mon, Apr 13 - Tue, May 5
Delta Logo
5:30 pm - 3:30 pm
DCA
-
OPO
17h 00m
2 stops
Delta Logo
5:00 am - 10:22 pm
OPO
-
DCA
22h 22m
2 stops
$593Delta
Tue, Apr 7 - Wed, Apr 15
United Airlines Logo
5:01 pm - 2:45 pm
DCA
-
OPO
17h 44m
2 stops
United Airlines Logo
6:00 am - 11:59 am
OPO
-
DCA
34h 59m
2 stops
$608United Airlines
Tue, Mar 24 - Tue, Mar 31

SWISS flights from District of Columbia to Porto

Our best SWISS deals on District of Columbia to Porto flight tickets
SWISS
Apr 15
IAD8:20 pmWashington, D.C. Dulles Intl
17h 10m
1 stop
OPO6:30 pmPorto
Apr 20
OPO7:20 pmPorto
26h 25m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
$537
SWISS
Mar 19
IAD9:30 pmWashington, D.C. Dulles Intl
33h 40m
1 stop
OPO11:10 amPorto
Mar 23
OPO7:20 pmPorto
26h 20m
1 stop
IAD5:40 pmWashington, D.C. Dulles Intl
$566
SWISS
May 10
IAD8:20 pmWashington, D.C. Dulles Intl
17h 10m
1 stop
OPO6:30 pmPorto
May 23
OPO8:40 amPorto
13h 05m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
$577

Delta flights from District of Columbia to Porto

Our best Delta deals on District of Columbia to Porto flight tickets
Delta
Apr 14
IAD5:07 pmWashington, D.C. Dulles Intl
17h 18m
2 stops
OPO3:25 pmPorto
Apr 24
OPO5:00 amPorto
15h 35m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$578
Delta
Apr 12
IAD9:45 pmWashington, D.C. Dulles Intl
19h 15m
1 stop
OPO10:00 pmPorto
Apr 29
OPO5:00 amPorto
23h 03m
2 stops
IAD11:03 pmWashington, D.C. Dulles Intl
$584
Delta
Apr 13
DCA3:05 pmWashington, D.C. Reagan-National
19h 20m
2 stops
OPO3:25 pmPorto
May 5
OPO5:00 amPorto
17h 30m
2 stops
DCA5:30 pmWashington, D.C. Reagan-National
$588

momondo Fare Finder

 
Customize your flight search to find flights from District of Columbia 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 February 8, 2026.
Use the filters below to find and compare flights from District of Columbia to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 4/13

10:35 pm-12:40 am

1 stop21h 05m

Porto

Wed 5/6

9:00 am-8:35 pm

1 stop16h 35m

$509

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 2/24

5:30 pm-5:00 pm

1 stop18h 30m

Porto

Tue 3/3

6:55 am-2:35 pm

1 stop12h 40m

$514

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Thu 4/9

5:45 pm-5:00 pm

1 stop18h 15m

Porto

Mon 4/13

10:35 pm-3:05 pm

1 stop21h 30m

$529

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Thu 3/19

11:55 pm-11:40 pm

1 stop19h 45m

Porto

Sun 3/29

6:20 am-7:25 pm

1 stop18h 05m

$534

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 4/15

8:20 pm-6:30 pm

1 stop17h 10m

Porto

Mon 4/20

7:20 pm-4:45 pm

1 stop26h 25m

$537

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 3/11

7:00 pm-11:40 am

1 stop12h 40m

Porto

Tue 3/17

6:00 am-4:50 pm

1 stop14h 50m

$542

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 3/22

6:00 pm-9:30 am

1 stop11h 30m

Porto

Wed 4/1

6:00 am-8:56 am

2 stops31h 56m

$583

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Mon 4/13

3:05 pm-3:25 pm

2 stops19h 20m

Porto

Tue 5/5

5:00 am-5:30 pm

2 stops17h 30m

$588

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 4/7

5:30 pm-3:30 pm

2 stops17h 00m

Porto

Wed 4/15

5:00 am-10:22 pm

2 stops22h 22m

$593

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 3/24

5:01 pm-2:45 pm

2 stops17h 44m

Porto

Tue 3/31

6:00 am-11:59 am

2 stops34h 59m

$608

Flights are sorted by cheapest round-trip flights first.

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

See travel insights to Porto from

How to get the cheapest flight ticket from District of Columbia 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 month to fly to Porto?

The month of January is, on average, the cheapest month to fly to Porto from District of Columbia, with most prices found around $539. If you aren’t able to travel during the month of January, then book flights to Porto from District of Columbia during October instead. Flights to Porto in October, while not as cheap as those in January, still average around $593.

How far in advance should I book a flight to Porto?

You are more likely to see cheaper flights to Porto from District of Columbia when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $718 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from District of Columbia for as low as $665 on momondo.

Can stopping save me money on District of Columbia to Porto flights?

You could potentially save up to 10% on your flight if you consider stops on a District of Columbia to Porto flight.

Cheap District of Columbia to Porto flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from District of Columbia to Porto

Fastest flight time

9h 30m

Direct flights

None
The fastest flight from District of Columbia to Porto takes 9h 30m
There are no direct flights from District of Columbia to Porto. There are no popular flight routes from District of Columbia to Porto.
Search flight deals

  • When did momondo last update prices for flights from District of Columbia to Porto Airport?

    Prices for flights from District of Columbia to Porto Airport are updated daily.

  • How many operators does momondo search for flights from District of Columbia to Porto Airport?

  • How old do you have to be to fly from District of Columbia to Porto Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from District of Columbia to Porto Airport.

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

    The necessary travel and health documents for your Porto Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from District of Columbia to Porto

Compare and see reviews for airlines that fly from District of Columbia to Porto with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $439Free CancellationRating
7.9
8,173 reviews
Search Delta flights
SWISSPriceFrom $444Free CancellationRating
7.6
1,867 reviews
Search SWISS flights
KLMPriceFrom $477Free CancellationRating
7.7
1,450 reviews
Search KLM flights
TAP AIR PORTUGALPriceFrom $487Free CancellationRating
7.1
2,135 reviews
Search TAP AIR PORTUGAL flights
United AirlinesPriceFrom $494Free CancellationRating
7.4
9,257 reviews
Search United Airlines flights
LufthansaPriceFrom $514Free CancellationRating
6.8
7,775 reviews
Search Lufthansa flights
IberiaPriceFrom $515Free CancellationRating
7.0
3,109 reviews
Search Iberia 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
Esposende
Lamego
Guimarães
Espinho
Chaves
Pinhao
Arcos de Valdevez
Viseu
Ponte de Lima
Curia
Penafiel
Mesao Frio
Mira
Baiao

Why use momondo?

Why should I use momondo to find a flight deal from District of Columbia to Porto?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Porto from District of Columbia.

Can I find flights from District of Columbia to Porto with flexible booking policies on momondo?

Flights from District of Columbia to Porto 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 District of Columbia to Porto?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from District of Columbia to Porto.

I’m not ready to book a flight from District of Columbia to Porto right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Porto from District of Columbia. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Porto 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
Tue 3/10
Tue 3/17
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal