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 68% 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?

TAP AIR PORTUGAL, United Airlines, and Air Canada 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 November 2025, 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.

$246 Cheap Flights from District of Columbia to Porto in 2025/26

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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.

5:15 pm - 11:40 amIAD-OPO

13h 25m1 stop

6:00 am - 2:35 pmOPO-IAD

13h 35m1 stop

$488United Airlines

Find Deal

Wed, Jan 14 - Thu, Jan 22

12:23 pm - 10:30 amIAD-OPO

17h 07m2 stops

6:00 am - 7:09 pmOPO-IAD

18h 09m2 stops

$491Delta

Find Deal

Wed, Jan 14 - Wed, Jan 21

9:45 am - 12:50 pmIAD-OPO

22h 05m2 stops

4:15 pm - 8:59 pmOPO-IAD

33h 44m2 stops

$494Multiple Airlines

Find Deal

Mon, Nov 24 - Tue, Dec 2

7:40 pm - 9:15 pmIAD-OPO

20h 35m2 stops

6:00 am - 6:30 pmOPO-IAD

17h 30m2 stops

$499Multiple Airlines

Find Deal

Wed, Jan 14 - Sun, Jan 18

10:55 pm - 10:25 pmIAD-OPO

18h 30m2 stops

6:00 am - 3:50 pmOPO-IAD

14h 50m1 stop

$509Lufthansa

Find Deal

Sun, Jan 11 - Thu, Jan 22

5:30 pm - 9:55 amIAD-OPO

11h 25m1 stop

9:00 am - 3:15 pmOPO-IAD

11h 15m1 stop

$511TAP AIR PORTUGAL

Find Deal

Thu, Jan 15 - Thu, Jan 22

5:30 pm - 1:05 pmIAD-OPO

14h 35m1 stop

9:00 am - 8:05 pmOPO-IAD

16h 05m1 stop

$512TAP AIR PORTUGAL

Find Deal

Mon, Dec 1 - Sat, May 2

8:30 pm - 11:15 amIAD-OPO

33h 45m1 stop

11:55 am - 4:40 pmOPO-IAD

33h 45m1 stop

$531SWISS

Find Deal

Sun, Jan 11 - Sat, Jan 24

5:20 pm - 11:40 amIAD-OPO

37h 20m2 stops

6:00 am - 3:50 pmOPO-IAD

14h 50m1 stop

$555Lufthansa

Find Deal

Thu, Jan 15 - Tue, Jan 20

8:30 pm - 11:15 amIAD-OPO

33h 45m1 stop

7:20 pm - 4:20 pmOPO-IAD

26h 00m1 stop

$561SWISS

Find Deal

Tue, Nov 25 - Thu, Apr 30

Delta flights from District of Columbia to Porto

Our best Delta deals on District of Columbia to Porto flight tickets

Delta

Jan 14

IAD12:23 pmWashington, D.C. Dulles Intl

17h 07m

2 stops

OPO10:30 amPorto

Jan 21

OPO6:00 amPorto

18h 09m

2 stops

IAD7:09 pmWashington, D.C. Dulles Intl

$491

Find similar

Delta

Jan 11

IAD7:49 pmWashington, D.C. Dulles Intl

33h 41m

2 stops

OPO10:30 amPorto

Jan 19

OPO11:15 amPorto

33h 50m

1 stop

IAD4:05 pmWashington, D.C. Dulles Intl

$492

Find similar

Delta

Nov 25

IAD7:01 amWashington, D.C. Dulles Intl

22h 29m

2 stops

OPO10:30 amPorto

Dec 8

OPO6:30 amPorto

41h 49m

2 stops

IAD7:19 pmWashington, D.C. Dulles Intl

$497

Find similar

SWISS flights from District of Columbia to Porto

Our best SWISS deals on District of Columbia to Porto flight tickets

SWISS

Jan 11

IAD8:30 pmWashington, D.C. Dulles Intl

33h 45m

1 stop

OPO11:15 amPorto

Jan 24

OPO11:55 amPorto

33h 45m

1 stop

IAD4:40 pmWashington, D.C. Dulles Intl

$531

Find similar

SWISS

Nov 25

IAD8:30 pmWashington, D.C. Dulles Intl

33h 45m

1 stop

OPO11:15 amPorto

Apr 30

OPO7:20 pmPorto

26h 00m

1 stop

IAD4:20 pmWashington, D.C. Dulles Intl

$561

Find similar

SWISS

Jan 15

IAD8:30 pmWashington, D.C. Dulles Intl

37h 15m

2 stops

OPO2:45 pmPorto

Jan 21

OPO12:10 pmPorto

33h 30m

1 stop

IAD4:40 pmWashington, D.C. Dulles Intl

$565

Find similar

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

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 1/14

5:15 pm-11:40 am

1 stop13h 25m

Porto

Thu 1/22

6:00 am-2:35 pm

1 stop13h 35m

$488

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 1/14

12:23 pm-10:30 am

2 stops17h 07m

Porto

Wed 1/21

6:00 am-7:09 pm

2 stops18h 09m

$491

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 11/24

9:45 am-12:50 pm

2 stops22h 05m

Porto

Tue 12/2

4:15 pm-8:59 pm

2 stops33h 44m

$494

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Wed 1/14

7:40 pm-9:15 pm

2 stops20h 35m

Porto

Sun 1/18

6:00 am-6:30 pm

2 stops17h 30m

$499

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 1/11

10:55 pm-10:25 pm

2 stops18h 30m

Porto

Thu 1/22

6:00 am-3:50 pm

1 stop14h 50m

$509

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Thu 1/15

5:30 pm-9:55 am

1 stop11h 25m

Porto

Thu 1/22

9:00 am-3:15 pm

1 stop11h 15m

$511

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Mon 12/1

5:30 pm-1:05 pm

1 stop14h 35m

Porto

Sat 5/2

9:00 am-8:05 pm

1 stop16h 05m

$512

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Sun 1/11

8:30 pm-11:15 am

1 stop33h 45m

Porto

Sat 1/24

11:55 am-4:40 pm

1 stop33h 45m

$531

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Thu 1/15

5:20 pm-11:40 am

2 stops37h 20m

Porto

Tue 1/20

6:00 am-3:50 pm

1 stop14h 50m

$555

Washington, D.C.Porto

IAD - OPO

IADOPO

Washington, D.C. Dulles Intl

Tue 11/25

8:30 pm-11:15 am

1 stop33h 45m

Porto

Thu 4/30

7:20 pm-4:20 pm

1 stop26h 00m

$561

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 $585. 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 $598.

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 District of Columbia 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 District of Columbia at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $739 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 48% 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

Direct flights	None

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 November 2025, 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
United Airlines	PriceFrom $493	Free Cancellation	Rating 7.4 9,003 reviews	Search United Airlines flights
TAP AIR PORTUGAL	PriceFrom $505	Free Cancellation	Rating 7.1 2,046 reviews	Search TAP AIR PORTUGAL flights
Iberia	PriceFrom $515	Free Cancellation	Rating 7.0 3,007 reviews	Search Iberia flights
Delta	PriceFrom $529	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights
KLM	PriceFrom $555	Free Cancellation	Rating 7.7 1,405 reviews	Search KLM flights
Lufthansa	PriceFrom $618	Free Cancellation	Rating 6.8 7,555 reviews	Search Lufthansa flights

Vila Nova de Gaia

Coimbra

Aveiro

Matosinhos

Braga

Lamego

Guimarães

Esposende

Chaves

Espinho

Viseu

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 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

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Algarve Airport

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Cheap flights from District of Columbia to Porto from $246

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 1/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from District of Columbia to Porto

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Delta flights from District of Columbia to Porto

Our best Delta deals on District of Columbia to Porto flight tickets

SWISS flights from District of Columbia to Porto

Our best SWISS 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

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?

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

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

You could potentially save up to 48% on your flight if you consider stops on a District of Columbia to Porto flight.

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

TAP AIR PORTUGAL, United Airlines, and Air Canada are the most popular carriers operating 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

Direct flights

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

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?

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

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?

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

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

How can momondo help me find flights 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?

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