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>

$353 CHEAP FLIGHTS from District of Columbia to Porto

OPO

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

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Cheap Flights from District of Columbia to Porto

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

Fri, Sep 18 - Fri, Oct 9

1:20 pm - 3:40 pm

IAD

OPO

21h 20m

1 stop

10:40 am - 11:35 am

OPO

IAD

29h 55m

1 stop

$623Turkish Airlines

Thu, Sep 17 - Mon, Sep 21

9:45 pm - 9:45 am

IAD

OPO

31h 00m

1 stop

6:30 am - 11:35 am

OPO

IAD

34h 05m

1 stop

$625Turkish Airlines

Sun, Apr 19 - Wed, Apr 29

10:35 pm - 11:50 pm

IAD

OPO

20h 15m

2 stops

2:40 pm - 8:35 pm

OPO

IAD

34h 55m

2 stops

$627Multiple Airlines

Mon, Aug 24 - Mon, Aug 31

10:35 pm - 3:00 pm

IAD

OPO

11h 25m

1 stop

11:00 am - 8:35 pm

OPO

IAD

14h 35m

1 stop

$628TAP AIR PORTUGAL

Wed, Sep 23 - Thu, Oct 1

1:20 pm - 3:40 pm

IAD

OPO

21h 20m

1 stop

6:10 am - 11:35 am

OPO

IAD

34h 25m

1 stop

$632Turkish Airlines

Sun, Aug 23 - Tue, Sep 1

10:35 pm - 3:15 pm

IAD

OPO

11h 40m

1 stop

9:00 am - 8:35 pm

OPO

IAD

16h 35m

1 stop

$634TAP AIR PORTUGAL

Tue, May 5 - Tue, May 12

1:25 pm - 11:45 am

DCA

OPO

17h 20m

2 stops

8:20 am - 7:05 pm

OPO

DCA

15h 45m

2 stops

$846Iberia

Mon, May 4 - Mon, May 11

5:59 pm - 11:45 am

DCA

OPO

12h 46m

2 stops

8:40 pm - 7:05 pm

OPO

DCA

27h 25m

2 stops

$857Iberia

Mon, May 11 - Thu, May 21

5:00 pm - 3:25 pm

DCA

OPO

17h 25m

2 stops

5:00 am - 5:07 pm

OPO

DCA

17h 07m

2 stops

$867Delta

Mon, Jun 8 - Tue, Jun 16

8:40 pm - 6:45 am

DCA

OPO

29h 05m

2 stops

8:25 am - 9:55 pm

OPO

DCA

18h 30m

1 stop

$897Multiple Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$353

Best time to beat the crowds with an average 23% drop in price.

Most popular time to fly with an average 27% 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

Espinho

Arcos de Valdevez

Ponte de Lima

Baiao

Santa Maria da Feira

Caminha

Mira

Penafiel

Amares

Curia

Everything you need to know for your flight to Porto

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Information on the airport you'll fly into in Porto

Porto (OPO)

OPO

$353 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

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