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>

$254 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.

Round-trip

One-way

Last minute

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

KAYAK's recommended round-trip deals from the most popular airlines that fly from District of Columbia to Porto.

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

10:20 pm - 7:00 pmIAD-OPO

15h 40m1 stop

11:00 am - 8:50 pmOPO-IAD

14h 50m1 stop

$500TAP AIR PORTUGAL

Find Deal

Mon, Sep 15 - Thu, Oct 2

5:00 pm - 9:00 amIAD-OPO

11h 00m1 stop

10:25 pm - 3:20 pmOPO-IAD

21h 55m1 stop

$501TAP AIR PORTUGAL

Find Deal

Tue, Sep 23 - Wed, Oct 1

4:35 pm - 3:55 pmIAD-OPO

18h 20m1 stop

8:40 pm - 5:30 pmOPO-IAD

24h 50m1 stop

$538Iberia

Find Deal

Mon, Oct 20 - Mon, Oct 27

5:44 pm - 11:40 amDCA-OPO

12h 56m2 stops

8:20 am - 10:46 pmOPO-DCA

18h 26m2 stops

$588Iberia

Find Deal

Wed, Oct 22 - Fri, Oct 31

8:45 pm - 11:25 amIAD-OPO

33h 40m1 stop

11:55 am - 5:30 pmOPO-IAD

33h 35m1 stop

$592SWISS

Find Deal

Wed, Oct 22 - Fri, Oct 31

9:45 am - 11:30 amIAD-OPO

20h 45m2 stops

6:00 am - 9:05 pmOPO-IAD

20h 05m2 stops

$619Air Canada

Find Deal

Tue, Oct 14 - Thu, Oct 23

5:30 pm - 11:40 amDCA-OPO

13h 10m2 stops

8:15 am - 8:16 pmOPO-DCA

17h 01m2 stops

$620American Airlines

Find Deal

Tue, Aug 19 - Wed, Aug 27

3:08 pm - 11:40 amDCA-OPO

15h 32m2 stops

8:15 am - 7:15 pmOPO-DCA

16h 00m2 stops

$667American Airlines

Find Deal

Wed, Oct 1 - Wed, Oct 8

4:30 pm - 9:35 amDCA-OPO

12h 05m1 stop

12:10 pm - 9:48 pmOPO-DCA

14h 38m1 stop

$687Air Canada

Find Deal

Mon, Aug 11 - Thu, Aug 28

8:45 pm - 7:55 amIAD-OPO

30h 10m1 stop

12:20 pm - 4:15 pmOPO-IAD

32h 55m1 stop

$711SWISS

Find Deal

Mon, May 12 - Wed, May 21

Useful Info

Low season	February
High season	July
Cheapest flight	$254

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

Most popular time to fly with an average 26% 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

Viseu

Esposende

Ponte de Lima

Arcos de Valdevez

Baiao

Santa Maria da Feira

Amares

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

$254 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