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>

$346 CHEAP FLIGHTS from District of Columbia to Porto

OPO

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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

Thu, Sep 17 - Mon, Sep 21

9:45 pm - 3:40 pm

IAD

OPO

36h 55m

1 stop

4:50 pm - 11:35 am

OPO

IAD

23h 45m

1 stop

$763Turkish Airlines

Tue, Aug 18 - Wed, Sep 2

5:05 pm - 10:00 am

IAD

OPO

11h 55m

1 stop

9:00 am - 3:10 pm

OPO

IAD

11h 10m

1 stop

$766TAP AIR PORTUGAL

Mon, Oct 19 - Tue, Oct 27

12:49 pm - 7:00 am

IAD

OPO

13h 11m

2 stops

6:00 am - 4:50 pm

OPO

IAD

14h 50m

1 stop

$767Multiple Airlines

Fri, Aug 14 - Mon, Aug 31

5:05 pm - 9:00 am

IAD

OPO

10h 55m

1 stop

10:30 pm - 3:10 pm

OPO

IAD

21h 40m

1 stop

$769TAP AIR PORTUGAL

Sun, Aug 23 - Sat, Aug 29

5:40 pm - 10:00 am

IAD

OPO

11h 20m

1 stop

5:05 am - 3:10 pm

OPO

IAD

15h 05m

1 stop

$770TAP AIR PORTUGAL

Mon, Aug 31 - Tue, Sep 8

5:40 pm - 5:00 pm

IAD

OPO

18h 20m

1 stop

11:00 am - 8:35 pm

OPO

IAD

14h 35m

1 stop

$774TAP AIR PORTUGAL

Sun, Aug 9 - Thu, Aug 20

5:40 pm - 10:25 am

DCA

OPO

11h 45m

1 stop

9:25 am - 10:59 pm

OPO

DCA

18h 34m

2 stops

$811Delta

Sun, Aug 9 - Wed, Aug 19

2:45 pm - 10:25 am

DCA

OPO

14h 40m

2 stops

5:55 am - 6:43 pm

OPO

DCA

17h 48m

2 stops

$815Delta

Wed, Jun 3 - Tue, Jun 16

6:00 am - 9:20 pm

DCA

OPO

34h 20m

3 stops

8:25 am - 12:01 pm

OPO

DCA

32h 36m

3 stops

$834Multiple Airlines

Wed, Aug 5 - Wed, Aug 26

6:00 am - 7:00 am

DCA

OPO

20h 00m

1 stop

2:25 pm - 3:38 pm

OPO

DCA

30h 13m

1 stop

$863Air Canada

Useful Info

Low season	January
High season	July
Cheapest flight	$346

Best time to beat the crowds with an average 24% drop in price.

Most popular time to fly with an average 29% 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

Pinhao

Chaves

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

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Cabin class

Complete your trip

Direct Flights

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Origins

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Return flight deals

Information on the airport you'll fly into in Porto

Porto (OPO)

OPO

$346 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