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>

$241 CHEAP FLIGHTS from District of Columbia to Porto

OPO

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Flight Deals

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

Tue, Sep 23 - Mon, Nov 3

4:35 pm - 3:55 pmIAD-OPO

18h 20m1 stop

12:25 pm - 4:30 pmOPO-IAD

33h 05m1 stop

$555Iberia

Find Deal

Mon, Sep 29 - Fri, Dec 5

1:00 pm - 9:35 amIAD-OPO

15h 35m1 stop

12:30 pm - 5:30 pmOPO-IAD

34h 00m2 stops

$556United Airlines

Find Deal

Tue, Oct 14 - Tue, Oct 21

8:21 am - 11:15 amIAD-OPO

21h 54m2 stops

6:00 am - 3:50 pmOPO-IAD

14h 50m1 stop

$557United Airlines

Find Deal

Tue, Sep 23 - Wed, Oct 8

1:30 pm - 3:50 pmIAD-OPO

21h 20m1 stop

4:50 pm - 11:45 amOPO-IAD

23h 55m1 stop

$558Turkish Airlines

Find Deal

Wed, Oct 15 - Wed, Oct 22

5:30 pm - 11:40 amDCA-OPO

13h 10m2 stops

8:15 am - 8:59 pmOPO-DCA

17h 44m2 stops

$559American Airlines

Find Deal

Tue, Oct 14 - Thu, Oct 23

3:36 pm - 11:15 amIAD-OPO

14h 39m2 stops

6:00 am - 3:50 pmOPO-IAD

14h 50m1 stop

$559

Find Deal

Wed, Sep 24 - Wed, Nov 5

10:20 pm - 7:00 pmIAD-OPO

15h 40m1 stop

12:00 pm - 9:00 pmOPO-IAD

14h 00m1 stop

$561TAP AIR PORTUGAL

Find Deal

Wed, Oct 22 - Wed, Oct 29

11:44 am - 7:35 amDCA-OPO

14h 51m2 stops

8:20 am - 8:59 pmOPO-DCA

16h 39m2 stops

$563American Airlines

Find Deal

Wed, Sep 24 - Thu, Nov 6

10:20 pm - 9:10 amIAD-OPO

29h 50m1 stop

7:00 am - 3:15 pmOPO-IAD

13h 15m1 stop

$566TAP AIR PORTUGAL

Find Deal

Sun, Oct 26 - Sat, Nov 1

1:09 pm - 7:40 amIAD-OPO

14h 31m2 stops

8:40 pm - 12:59 amOPO-IAD

32h 19m2 stops

$570

Find Deal

Useful Info

Low season	February
High season	July
Cheapest flight	$241

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

Most popular time to fly with an average 24% 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)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

OPO

$241 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