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>

$365 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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Flight Deals

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

Sun, Apr 12 - Tue, Jun 9

10:35 pm - 8:25 pm

IAD

OPO

16h 50m

1 stop

5:05 am - 3:10 pm

OPO

IAD

15h 05m

1 stop

$624TAP AIR PORTUGAL

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

Tue, Apr 21 - Tue, Apr 28

10:20 pm - 6:50 am

IAD

OPO

27h 30m

3 stops

4:05 pm - 4:45 pm

OPO

IAD

29h 40m

3 stops

$637Multiple Airlines

Mon, Aug 3 - Wed, Aug 19

6:00 am - 7:00 am

DCA

OPO

20h 00m

1 stop

2:25 pm - 12:23 pm

OPO

DCA

26h 58m

2 stops

$789United Airlines

Wed, Aug 12 - Wed, Aug 19

6:00 am - 7:00 am

DCA

OPO

20h 00m

1 stop

2:25 pm - 10:18 am

OPO

DCA

24h 53m

1 stop

$802Air Canada

Tue, Aug 18 - Tue, Aug 25

12:40 pm - 7:00 am

DCA

OPO

37h 20m

2 stops

12:15 pm - 12:00 pm

OPO

DCA

28h 45m

2 stops

$803Air Canada

Sun, Aug 16 - Wed, Aug 19

3:05 pm - 6:55 am

DCA

OPO

10h 50m

1 stop

2:25 pm - 9:48 pm

OPO

DCA

12h 23m

1 stop

$804United Airlines

Mon, Apr 27 - Tue, May 5

6:10 pm - 3:25 pm

DCA

OPO

16h 15m

2 stops

5:00 am - 4:36 pm

OPO

DCA

16h 36m

2 stops

$807Delta

Mon, May 11 - Mon, May 18

7:59 pm - 10:55 am

DCA

OPO

9h 56m

1 stop

5:50 pm - 9:44 am

OPO

DCA

20h 54m

1 stop

$822Multiple Airlines

Sun, Jul 26 - Fri, Aug 21

5:00 pm - 10:25 am

DCA

OPO

12h 25m

1 stop

11:25 am - 11:12 pm

OPO

DCA

16h 47m

2 stops

$833Delta

Useful Info

Low season	January
High season	July
Cheapest flight	$365

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

Most popular time to fly with an average 25% 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

Baiao

Santa Maria da Feira

Caminha

Mira

Penafiel

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)

OPO

$365 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