How does KAYAK find such low prices on flights from District of Columbia to Porto?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to Porto. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to Porto?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from District of Columbia to Porto?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to District of Columbia with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to Porto?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$219 CHEAP FLIGHTS from District of Columbia to Porto

OPO

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Cheap Flights from District of Columbia to Porto

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from District of Columbia to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from District of Columbia to Porto

Wed, Nov 19 - Thu, Nov 27

12:11 pm - 10:30 amIAD-OPO

17h 19m2 stops

11:15 am - 9:32 pmOPO-IAD

39h 17m2 stops

$492Delta

Find Deal

Sun, Jan 11 - Wed, Feb 4

11:00 am - 10:30 amDCA-OPO

18h 30m2 stops

6:00 am - 10:56 pmOPO-DCA

21h 56m2 stops

$492Delta

Find Deal

Wed, Jan 14 - Tue, Jan 27

1:05 pm - 11:40 amIAD-OPO

17h 35m2 stops

6:00 am - 2:35 pmOPO-IAD

13h 35m1 stop

$494United Airlines

Find Deal

Sat, Apr 4 - Fri, Apr 10

10:35 pm - 8:25 pmIAD-OPO

16h 50m1 stop

11:00 am - 8:35 pmOPO-IAD

14h 35m1 stop

$497TAP AIR PORTUGAL

Find Deal

Sun, Jan 11 - Mon, Feb 2

4:10 pm - 12:05 pmDCA-OPO

14h 55m2 stops

12:30 pm - 3:31 pmOPO-DCA

32h 01m2 stops

$497Multiple Airlines

Find Deal

Fri, Nov 14 - Fri, Nov 21

5:33 pm - 9:30 amIAD-OPO

10h 57m1 stop

6:00 am - 3:50 pmOPO-IAD

14h 50m1 stop

$499United Airlines

Find Deal

Fri, Jan 16 - Mon, Jan 26

10:30 pm - 5:00 pmIAD-OPO

13h 30m1 stop

8:30 am - 3:15 pmOPO-IAD

11h 45m1 stop

$500TAP AIR PORTUGAL

Find Deal

Fri, Nov 14 - Thu, Nov 20

5:33 pm - 9:30 amIAD-OPO

10h 57m1 stop

12:05 pm - 4:40 pmOPO-IAD

33h 35m1 stop

$502Multiple Airlines

Find Deal

Fri, Nov 14 - Fri, Nov 21

9:45 am - 12:05 pmIAD-OPO

21h 20m2 stops

6:00 am - 4:27 pmOPO-IAD

39h 27m2 stops

$509Air Canada

Find Deal

Wed, Jan 14 - Mon, Jan 26

4:10 pm - 12:05 pmDCA-OPO

14h 55m2 stops

6:00 am - 7:45 pmOPO-DCA

18h 45m2 stops

$510Air Canada

Find Deal

Cheapest round-trip

$492

Overall average: $574

Delta

Wed 11/19Thu 11/27

IAD - OPO • 2 stops

Cheapest one-way

$219

Typical prices: $251-$387

TAP AIR PORTUGAL

Thu 10/23

IAD - OPO • 1 stop

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KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Porto!

Useful Info

Low season	February
High season	July
Cheapest flight	$219

Best time to beat the crowds with an average 18% drop in price.

Most popular time to fly with an average 20% increase in price.

Flight from Washington Dulles Airport to Porto

How does KAYAK find such low prices on flights from District of Columbia to Porto?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to Porto.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to Porto?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from District of Columbia to Porto?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to District of Columbia with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to Porto?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Lamego

Guimarães

Chaves

Pinhao

Esposende

Viseu

Arcos de Valdevez

Espinho

Ponte de Lima

Caminha

Mira

Baiao

Penafiel

Santa Maria da Feira

Amares

Curia

Everything you need to know for your flight to Porto

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Porto

Porto (OPO)

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OPO

$220 Find Cheap Flights from District of Columbia to Porto

KAYAK searches hundreds of travel sites at once for deals on flights to Porto

Cheap Flights from District of Columbia to Porto

Recent round-trip flight deals from District of Columbia to Porto

Recent one-way flight deals from District of Columbia to Porto

Recent last minute flight deals from District of Columbia to Porto

Everything you should know

Good to know

FAQs for booking flights from District of Columbia to Porto

How does KAYAK find such low prices on flights from District of Columbia to Porto?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from District of Columbia to Porto.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from District of Columbia to Porto?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from District of Columbia to Porto?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto with an airline and back to District of Columbia with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from District of Columbia to Porto?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto from District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Porto?

Everything you need to know for your flight to Porto

Information on the airport you'll fly into in Porto

Cabin class types available on flights to District of Columbia

Complete your trip to Porto with a hotel stay or car rental

Find direct flights for Porto

Flights to other popular destinations

Flights from domestic origins to Porto

Choose which airport to fly into in Porto

Find deals for your return flight