What airlines fly to Porto?

TAP AIR PORTUGAL, United Airlines and Lufthansa 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 78% 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?

United Airlines, Lufthansa, and Delta 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 September 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.

$297 Cheap Flights from District of Columbia to Porto in 2026/27

Discover deals from 900+ travel sites with momondo.

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.

9:55 am - 11:15 amIAD Washington, D.C. Dulles Intl-OPO Porto

20h 20m2 stops Montreal Pierre Elliott Trudeau Intl Zurich

6:00 am - 9:26 pmOPO Porto-IAD Washington, D.C. Dulles Intl

20h 26m2 stops Frankfurt am Main Toronto Pearson Intl

$645Air Canada

Tue, Dec 8 - Wed, Dec 16

11:05 am - 10:35 amDCA Washington, D.C. Reagan-National-OPO Porto

18h 30m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

5:55 am - 11:04 pmOPO Porto-DCA Washington, D.C. Reagan-National

22h 09m2 stops Paris Charles de Gaulle New York John F Kennedy Intl

$646Delta

Wed, Dec 9 - Thu, Jan 7

11:05 am - 10:35 amDCA Washington, D.C. Reagan-National-OPO Porto

18h 30m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

11:30 am - 11:04 pmOPO Porto-DCA Washington, D.C. Reagan-National

16h 34m2 stops Paris Charles de Gaulle New York John F Kennedy Intl

$646Delta

Sun, Dec 13 - Tue, Jan 12

5:50 pm - 9:40 amIAD Washington, D.C. Dulles Intl-OPO Porto

10h 50m1 stop Madrid Barajas

6:30 am - 4:20 pmOPO Porto-IAD Washington, D.C. Dulles Intl

14h 50m1 stop Madrid Barajas

$647Multiple Airlines

Mon, Dec 14 - Tue, Jan 12

8:15 am - 9:30 amIAD Washington, D.C. Dulles Intl-OPO Porto

20h 15m1 stop Newark

12:30 pm - 3:05 pmOPO Porto-IAD Washington, D.C. Dulles Intl

30h 35m1 stop Frankfurt am Main

$659United Airlines

Mon, Mar 1 - Sat, Mar 27

5:30 pm - 3:20 pmIAD Washington, D.C. Dulles Intl-OPO Porto

16h 50m1 stop Frankfurt am Main

6:00 am - 3:55 pmOPO Porto-IAD Washington, D.C. Dulles Intl

14h 55m1 stop Frankfurt am Main

$662United Airlines

Fri, Nov 6 - Fri, Nov 13

11:55 pm - 10:25 pmIAD Washington, D.C. Dulles Intl-OPO Porto

18h 30m2 stops Munich Franz Josef Strauss Frankfurt am Main

6:20 am - 7:25 pmOPO Porto-IAD Washington, D.C. Dulles Intl

18h 05m1 stop Munich Franz Josef Strauss

$676Lufthansa

Mon, Mar 22 - Sun, Mar 28

9:30 pm - 10:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

19h 30m1 stop Paris Charles de Gaulle

11:30 am - 11:02 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 32m2 stops Paris Charles de Gaulle Detroit Metropolitan Wayne County

$687KLM

Mon, Dec 14 - Sat, Mar 20

7:00 pm - 12:50 pmIAD Washington, D.C. Dulles Intl-OPO Porto

13h 50m2 stops Frankfurt am Main Munich Franz Josef Strauss

6:20 am - 7:25 pmOPO Porto-IAD Washington, D.C. Dulles Intl

18h 05m1 stop Munich Franz Josef Strauss

$688Lufthansa

Sun, Mar 21 - Sun, Mar 28

6:30 pm - 3:25 pmIAD Washington, D.C. Dulles Intl-OPO Porto

15h 55m2 stops New York John F Kennedy Intl Amsterdam Schiphol

5:00 am - 4:30 pmOPO Porto-IAD Washington, D.C. Dulles Intl

16h 30m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$799KLM

Sat, Jan 16 - Wed, Jan 20

Cheap last minute flights

Enter your travel dates to find the best prices.

12:59 pm - 7:40 amDCA Washington, D.C. Reagan-National-OPO Porto

13h 41m2 stops New York John F Kennedy Intl Madrid Barajas

8:40 pm - 9:40 pmOPO Porto-DCA Washington, D.C. Reagan-National

30h 00m2 stops Madrid Barajas Boston Logan Intl

$676Iberia

Mon, Sep 28 - Mon, Oct 5

11:00 am - 1:35 pmDCA Washington, D.C. Reagan-National-OPO Porto

21h 35m2 stops Toronto Pearson Intl Madrid Barajas

8:15 pm - 10:34 pmOPO Porto-DCA Washington, D.C. Reagan-National

31h 19m3 stops Madrid Barajas Brussels Bruxelles-National Toronto Pearson Intl

$729Multiple Airlines

Mon, Sep 28 - Mon, Oct 5

10:35 pm - 3:00 pmIAD Washington, D.C. Dulles Intl-OPO Porto

11h 25m1 stop Lisbon Humberto Delgado

10:00 am - 8:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 35m1 stop Lisbon Humberto Delgado

$741TAP AIR PORTUGAL

Sat, Sep 26 - Fri, Oct 9

10:35 pm - 12:40 amIAD Washington, D.C. Dulles Intl-OPO Porto

21h 05m1 stop Lisbon Humberto Delgado

10:30 pm - 3:10 pmOPO Porto-IAD Washington, D.C. Dulles Intl

21h 40m1 stop Lisbon Humberto Delgado

$752TAP AIR PORTUGAL

Sat, Sep 26 - Sun, Oct 4

5:15 pm - 11:15 amIAD Washington, D.C. Dulles Intl-OPO Porto

37h 00m2 stops Boston Logan Intl Frankfurt am Main

6:00 am - 4:05 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 05m1 stop Frankfurt am Main

$1,000Lufthansa

Sat, Sep 26 - Fri, Oct 9

5:15 pm - 11:15 amIAD Washington, D.C. Dulles Intl-OPO Porto

37h 00m2 stops Boston Logan Intl Frankfurt am Main

6:20 am - 4:05 pmOPO Porto-IAD Washington, D.C. Dulles Intl

14h 45m2 stops Munich Franz Josef Strauss Frankfurt am Main

$1,023Lufthansa

Sat, Sep 26 - Fri, Oct 9

9:45 pm - 3:25 pmIAD Washington, D.C. Dulles Intl-OPO Porto

12h 40m1 stop Paris Charles de Gaulle

5:00 am - 3:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 35m1 stop Amsterdam Schiphol

$1,024Delta

Thu, Sep 24 - Tue, Oct 20

9:45 pm - 3:25 pmIAD Washington, D.C. Dulles Intl-OPO Porto

12h 40m1 stop Paris Charles de Gaulle

5:00 am - 3:35 pmOPO Porto-IAD Washington, D.C. Dulles Intl

15h 35m1 stop Amsterdam Schiphol

$1,024Delta

Thu, Sep 24 - Thu, Oct 22

12:45 pm - 11:15 amIAD Washington, D.C. Dulles Intl-OPO Porto

17h 30m2 stops Atlanta Hartsfield-Jackson Frankfurt am Main

12:05 pm - 7:23 amOPO Porto-IAD Washington, D.C. Dulles Intl

24h 18m2 stops Frankfurt am Main New York John F Kennedy Intl

$1,054United Airlines

Fri, Sep 25 - Fri, Oct 9

5:55 pm - 9:45 amDCA Washington, D.C. Reagan-National-OPO Porto

10h 50m1 stop Newark

12:35 pm - 7:39 pmOPO Porto-DCA Washington, D.C. Reagan-National

12h 04m1 stop Newark

$1,448United Airlines

Sat, Sep 26 - Sun, Oct 4

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SWISS flights from District of Columbia to Porto

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

SWISS

Nov 4

IAD8:10 pmWashington, D.C. Dulles Intl

30h 45m

2 stops

OPO7:55 amPorto

Nov 8

OPO6:35 pmPorto

51h 25m

2 stops

IAD5:00 pmWashington, D.C. Dulles Intl

$654

SWISS

Oct 25

IAD9:10 pmWashington, D.C. Dulles Intl

34h 05m

1 stop

OPO11:15 amPorto

Oct 31

OPO10:40 amPorto

35h 20m

2 stops

IAD6:00 pmWashington, D.C. Dulles Intl

$657

SWISS

Nov 9

IAD8:10 pmWashington, D.C. Dulles Intl

34h 05m

1 stop

OPO11:15 amPorto

Nov 14

OPO10:40 amPorto

59h 20m

2 stops

IAD5:00 pmWashington, D.C. Dulles Intl

$669

United Airlines flights from District of Columbia to Porto

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

United Airlines

Mar 1

IAD8:15 amWashington, D.C. Dulles Intl

20h 15m

1 stop

OPO9:30 amPorto

Mar 27

OPO12:30 pmPorto

30h 35m

1 stop

IAD3:05 pmWashington, D.C. Dulles Intl

$659

United Airlines

Nov 5

IAD6:00 pmWashington, D.C. Dulles Intl

12h 45m

1 stop

OPO11:45 amPorto

Nov 12

OPO6:00 amPorto

14h 55m

1 stop

IAD3:55 pmWashington, D.C. Dulles Intl

$662

United Airlines

Nov 5

IAD8:23 amWashington, D.C. Dulles Intl

22h 22m

2 stops

OPO11:45 amPorto

Nov 12

OPO6:00 amPorto

14h 55m

1 stop

IAD3:55 pmWashington, D.C. Dulles Intl

$667

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 Washington, D.C. Dulles Intl - OPO Porto

IADOPO

Washington, D.C. Dulles Intl

Tue 12/8

9:55 am-11:15 am

2 stops20h 20m

Porto

Wed 12/16

6:00 am-9:26 pm

2 stops20h 26m

$645

Washington, D.C.Porto

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

DCAOPO

Washington, D.C. Reagan-National

Wed 12/9

11:05 am-10:35 am

2 stops18h 30m

Porto

Thu 1/7

5:55 am-11:04 pm

2 stops22h 09m

$646

Washington, D.C.Porto

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

DCAOPO

Washington, D.C. Reagan-National

Sun 12/13

11:05 am-10:35 am

2 stops18h 30m

Porto

Tue 1/12

11:30 am-11:04 pm

2 stops16h 34m

$646

Quickest round-trip

Washington, D.C.Porto

IAD Washington, D.C. Dulles Intl - OPO Porto

IADOPO

Washington, D.C. Dulles Intl

Mon 12/14

5:50 pm-9:40 am

1 stop10h 50m

Porto

Tue 1/12

6:30 am-4:20 pm

1 stop14h 50m

$647

Washington, D.C.Porto

IAD Washington, D.C. Dulles Intl - OPO Porto

IADOPO

Washington, D.C. Dulles Intl

Mon 3/1

8:15 am-9:30 am

1 stop20h 15m

Porto

Sat 3/27

12:30 pm-3:05 pm

1 stop30h 35m

$659

Washington, D.C.Porto

IAD Washington, D.C. Dulles Intl - OPO Porto

IADOPO

Washington, D.C. Dulles Intl

Fri 11/6

5:30 pm-3:20 pm

1 stop16h 50m

Porto

Fri 11/13

6:00 am-3:55 pm

1 stop14h 55m

$662

Washington, D.C.Porto

IAD Washington, D.C. Dulles Intl - OPO Porto

IADOPO

Washington, D.C. Dulles Intl

Mon 3/22

11:55 pm-10:25 pm

2 stops18h 30m

Porto

Sun 3/28

6:20 am-7:25 pm

1 stop18h 05m

$676

Washington, D.C.Porto

IAD Washington, D.C. Dulles Intl - OPO Porto

IADOPO

Washington, D.C. Dulles Intl

Mon 12/14

9:30 pm-10:00 pm

1 stop19h 30m

Porto

Sat 3/20

11:30 am-11:02 pm

2 stops15h 32m

$687

Washington, D.C.Porto

IAD Washington, D.C. Dulles Intl - OPO Porto

IADOPO

Washington, D.C. Dulles Intl

Sun 3/21

7:00 pm-12:50 pm

2 stops13h 50m

Porto

Sun 3/28

6:20 am-7:25 pm

1 stop18h 05m

$688

Washington, D.C.Porto

IAD Washington, D.C. Dulles Intl - OPO Porto

IADOPO

Washington, D.C. Dulles Intl

Sat 1/16

6:30 pm-3:25 pm

2 stops15h 55m

Porto

Wed 1/20

5:00 am-4:30 pm

2 stops16h 30m

$799

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 $574. If you aren’t able to travel during the month of January, then book flights to Porto from District of Columbia during February instead. Flights to Porto in February, while not as cheap as those in January, still average around $641.

How far in advance should I book a flight from District of Columbia 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 $843 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 $608 on momondo.

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

You could potentially save up to 11% 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

Best Price Found	$297
Fastest flight time	9h 30m
Direct flights	None

The best one-way flight to Porto from District of Columbia in the past 72 hours is $297. The best round-trip flight deal from District of Columbia to Porto found on momondo in the last 72 hours is $645.

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

Frequently asked questions about flying 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 September 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 1,576 reviews	Search KLM flights
TAP AIR PORTUGAL	PriceFrom $499	Free Cancellation	Rating 7.2 2,379 reviews	Search TAP AIR PORTUGAL flights
Lufthansa	PriceFrom $514	Free Cancellation	Rating 6.8 8,234 reviews	Search Lufthansa flights
United Airlines	PriceFrom $532	Free Cancellation	Rating 7.4 10,233 reviews	Search United Airlines flights
Delta	PriceFrom $533	Free Cancellation	Rating 7.8 8,594 reviews	Search Delta flights
Air France	PriceFrom $642	Free Cancellation	Rating 7.5 1,651 reviews	Search Air France flights

Coimbra

Vila Nova de Gaia

Braga

Aveiro

Pinhao

Matosinhos

Esposende

Chaves

Viseu

Arcos de Valdevez

Espinho

Guimarães

Lamego

Ponte de Lima

Penafiel

Caminha

Mira

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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Nearby airports

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Complete your trip

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Airports servicing Portugal

Faro Airport

Lisbon Humberto Delgado Airport

Azores Airport

Madeira Airport

Algarve Airport

Cheap flights from District of Columbia to Porto from $297

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 10/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from District of Columbia to Porto

Cheap round-trip flights

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Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

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SWISS flights from District of Columbia to Porto

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

United Airlines flights from District of Columbia to Porto

Our best United 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 from District of Columbia 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

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from District of Columbia to Porto

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

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