What airlines fly to Porto?

TAP AIR PORTUGAL, United Airlines and Delta are the top three most popular airlines that fly to Porto from District of Columbia according to our data. TAP AIR PORTUGAL is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 6 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from District of Columbia to Porto?

KLM, Delta, and United Airlines are the most popular carriers operating from District of Columbia to Porto

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?

As of March 2026, there are 6 operators available to choose from 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.

$321 Cheap Flights from District of Columbia to Porto in 2026

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Find the cheapest flights from District of Columbia to Porto

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:45 pm - 9:45 am

IAD

OPO

31h 00m

1 stop

6:30 am - 7:50 pm

OPO

IAD

18h 20m

1 stop

$598Turkish Airlines

Mon, Apr 13 - Mon, Jun 8

10:35 pm - 5:10 pm

IAD

OPO

13h 35m

1 stop

9:00 am - 3:10 pm

OPO

IAD

11h 10m

1 stop

$604TAP AIR PORTUGAL

Tue, Aug 18 - Fri, Aug 28

5:45 pm - 10:10 am

IAD

OPO

11h 25m

1 stop

9:00 am - 3:10 pm

OPO

IAD

11h 10m

1 stop

$608TAP AIR PORTUGAL

Wed, Aug 19 - Fri, Aug 28

10:35 pm - 3:00 pm

IAD

OPO

11h 25m

1 stop

6:00 pm - 3:10 pm

OPO

IAD

26h 10m

1 stop

$613TAP AIR PORTUGAL

Sun, Aug 16 - Sun, Aug 30

5:40 pm - 9:00 am

IAD

OPO

10h 20m

1 stop

10:30 pm - 3:10 pm

OPO

IAD

21h 40m

1 stop

$614TAP AIR PORTUGAL

Mon, Aug 24 - Sun, Aug 30

6:00 am - 7:00 am

DCA

OPO

20h 00m

1 stop

2:25 pm - 10:23 am

OPO

DCA

24h 58m

2 stops

$739United Airlines

Wed, Aug 12 - Wed, Aug 26

3:05 pm - 6:55 am

DCA

OPO

10h 50m

1 stop

2:25 pm - 12:23 pm

OPO

DCA

26h 58m

2 stops

$740United Airlines

Sun, Aug 16 - Wed, Aug 26

6:00 am - 7:00 am

DCA

OPO

20h 00m

1 stop

11:50 am - 9:48 pm

OPO

DCA

14h 58m

1 stop

$752Air Canada

Wed, Aug 12 - Thu, Aug 27

11:00 am - 6:15 pm

DCA

OPO

26h 15m

2 stops

11:05 am - 9:55 pm

OPO

DCA

15h 50m

2 stops

$756Multiple Airlines

Sun, Apr 26 - Thu, May 7

5:34 pm - 3:25 pm

DCA

OPO

16h 51m

2 stops

5:00 am - 6:59 pm

OPO

DCA

18h 59m

2 stops

$757Delta

Tue, Apr 21 - Tue, Apr 28

TAP AIR PORTUGAL flights from District of Columbia to Porto

Our best TAP AIR PORTUGAL deals on District of Columbia to Porto flight tickets

TAP AIR PORTUGAL

Aug 18

IAD10:35 pmWashington, D.C. Dulles Intl

13h 35m

1 stop

OPO5:10 pmPorto

Aug 28

OPO9:00 amPorto

11h 10m

1 stop

IAD3:10 pmWashington, D.C. Dulles Intl

$604

TAP AIR PORTUGAL

Aug 31

IAD10:35 pmWashington, D.C. Dulles Intl

21h 05m

1 stop

OPO12:40 amPorto

Sep 8

OPO12:10 pmPorto

13h 25m

1 stop

IAD8:35 pmWashington, D.C. Dulles Intl

$608

TAP AIR PORTUGAL

Aug 16

IAD10:35 pmWashington, D.C. Dulles Intl

11h 25m

1 stop

OPO3:00 pmPorto

Aug 30

OPO6:00 pmPorto

26h 10m

1 stop

IAD3:10 pmWashington, D.C. Dulles Intl

$613

Turkish Airlines flights from District of Columbia to Porto

Our best Turkish Airlines deals on District of Columbia to Porto flight tickets

Turkish Airlines

Apr 25

IAD9:45 pmWashington, D.C. Dulles Intl

20h 45m

1 stop

OPO11:30 pmPorto

May 7

OPO6:10 amPorto

18h 40m

1 stop

IAD7:50 pmWashington, D.C. Dulles Intl

$594

Turkish Airlines

Apr 13

IAD9:45 pmWashington, D.C. Dulles Intl

31h 00m

1 stop

OPO9:45 amPorto

Jun 8

OPO6:30 amPorto

18h 20m

1 stop

IAD7:50 pmWashington, D.C. Dulles Intl

$598

Turkish Airlines

Apr 12

IAD1:20 pmWashington, D.C. Dulles Intl

21h 30m

1 stop

OPO3:50 pmPorto

Apr 29

OPO10:45 amPorto

29h 50m

1 stop

IAD11:35 amWashington, D.C. Dulles Intl

$607

momondo Fare Finder

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

Cheapest round-trip

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 4/13

9:45 pm-9:45 am

1 stop31h 00m

Porto

Mon 6/8

6:30 am-7:50 pm

1 stop18h 20m

$598

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 8/18

10:35 pm-5:10 pm

1 stop13h 35m

Porto

Fri 8/28

9:00 am-3:10 pm

1 stop11h 10m

$604

Quickest round-trip

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 8/19

5:45 pm-10:10 am

1 stop11h 25m

Porto

Fri 8/28

9:00 am-3:10 pm

1 stop11h 10m

$608

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 8/16

10:35 pm-3:00 pm

1 stop11h 25m

Porto

Sun 8/30

6:00 pm-3:10 pm

1 stop26h 10m

$613

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 8/24

5:40 pm-9:00 am

1 stop10h 20m

Porto

Sun 8/30

10:30 pm-3:10 pm

1 stop21h 40m

$614

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 8/12

6:00 am-7:00 am

1 stop20h 00m

Porto

Wed 8/26

2:25 pm-10:23 am

2 stops24h 58m

$739

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 8/16

3:05 pm-6:55 am

1 stop10h 50m

Porto

Wed 8/26

2:25 pm-12:23 pm

2 stops26h 58m

$740

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Wed 8/12

6:00 am-7:00 am

1 stop20h 00m

Porto

Thu 8/27

11:50 am-9:48 pm

1 stop14h 58m

$752

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Sun 4/26

11:00 am-6:15 pm

2 stops26h 15m

Porto

Thu 5/7

11:05 am-9:55 pm

2 stops15h 50m

$756

Washington, D.C.Porto

DCA - OPO

DCAOPO

Washington, D.C. Reagan-National

Tue 4/21

5:34 pm-3:25 pm

2 stops16h 51m

Porto

Tue 4/28

5:00 am-6:59 pm

2 stops18h 59m

$757

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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 $576.

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 $727 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 $644 on momondo.

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

You could potentially save up to 17% 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 50m
Direct flights	None

The fastest flight from District of Columbia to Porto takes 9h 50m

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?
As of March 2026, there are 6 operators available to choose from 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
KLM	PriceFrom $477	Free Cancellation	Rating 7.8 1,477 reviews	Search KLM flights
TAP AIR PORTUGAL	PriceFrom $490	Free Cancellation	Rating 7.1 2,183 reviews	Search TAP AIR PORTUGAL flights
United Airlines	PriceFrom $494	Free Cancellation	Rating 7.4 9,504 reviews	Search United Airlines flights
Iberia	PriceFrom $515	Free Cancellation	Rating 7.0 3,158 reviews	Search Iberia flights
Delta	PriceFrom $529	Free Cancellation	Rating 7.9 8,357 reviews	Search Delta flights
Lufthansa	PriceFrom $564	Free Cancellation	Rating 6.8 7,872 reviews	Search Lufthansa flights

Vila Nova de Gaia

Coimbra

Aveiro

Braga

Matosinhos

Lamego

Esposende

Chaves

Pinhao

Guimarães

Espinho

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.

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Find better results for your trip to Portugal

Nearby airports

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Other flights from District of Columbia

Complete your trip

Feeling lucky

Airports servicing Portugal

Faro Airport

Lisbon Humberto Delgado Airport

Azores Airport

Madeira Airport

Algarve Airport

Cheap flights from District of Columbia to Porto from $321

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 9/23. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from District of Columbia to Porto

Cheap round-trip flights

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TAP AIR PORTUGAL flights from District of Columbia to Porto

Our best TAP AIR PORTUGAL deals on District of Columbia to Porto flight tickets

Turkish Airlines flights from District of Columbia to Porto

Our best Turkish Airlines deals on District of Columbia to Porto flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from District of Columbia to Porto that are best for you.

See travel insights to Porto from

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

What is the cheapest month to fly to Porto?

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

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

What is the cheapest airline that flies from District of Columbia to Porto?

What airlines fly to Porto?

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

Direct flights

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

Traveling to a place near Porto?

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Airports servicing Portugal

Fly your favorite airline to Porto

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Porto

List of cabin classes available on flights landing in Porto. Availability may vary depending on flight origin and airline.

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from District of Columbia

According to popular flight searches on momondo this year

Complete your trip to Porto

Explore popular destinations other users love

According to popular flight searches on momondo this year