How does KAYAK find such low prices on flights from Washington 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 Washington 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 Washington to Porto?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Washington 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 Washington 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 Washington 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 Washington 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 Washington 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>

$280 CHEAP FLIGHTS from Washington 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 Washington 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 Washington to Porto

Sat, Aug 22 - Thu, Sep 10

3:55 pm - 5:05 pm

SEA

OPO

17h 10m

1 stop

11:50 am - 1:45 pm

OPO

SEA

33h 55m

1 stop

$738Scandinavian Airlines

Mon, Oct 19 - Wed, Oct 28

7:40 am - 4:00 pm

SEA

OPO

24h 20m

2 stops

8:40 pm - 11:08 am

OPO

SEA

21h 28m

2 stops

$781Iberia

Mon, Nov 9 - Mon, Nov 23

5:24 am - 8:00 pm

SEA

OPO

30h 36m

2 stops

8:40 pm - 11:05 pm

OPO

SEA

34h 25m

2 stops

$782Multiple Airlines

Tue, Oct 6 - Thu, Oct 29

8:20 pm - 7:30 pm

SEA

OPO

15h 10m

1 stop

8:20 am - 12:14 am

OPO

SEA

22h 54m

2 stops

$794Multiple Airlines

Sun, Oct 11 - Wed, Oct 21

12:00 pm - 4:00 pm

SEA

OPO

20h 00m

2 stops

8:20 am - 7:30 pm

OPO

SEA

19h 10m

2 stops

$798American Airlines

Sun, Oct 18 - Tue, Oct 27

11:55 am - 4:00 pm

PDX

OPO

20h 05m

2 stops

8:20 am - 10:59 pm

OPO

PDX

21h 39m

2 stops

$814American Airlines

Sat, Oct 17 - Thu, Oct 29

3:00 pm - 7:00 am

SEA

OPO

56h 00m

2 stops

6:00 am - 6:22 pm

OPO

SEA

19h 22m

2 stops

$818Air Canada

Sun, Aug 16 - Wed, Aug 26

7:45 pm - 7:00 am

PDX

OPO

27h 15m

2 stops

11:20 am - 10:52 pm

OPO

PDX

43h 32m

2 stops

$849Air Canada

Sun, Aug 16 - Wed, Aug 26

10:56 am - 9:45 am

PDX

OPO

14h 49m

1 stop

11:20 am - 9:59 pm

OPO

PDX

42h 39m

2 stops

$850United Airlines

Sun, Aug 16 - Wed, Aug 26

7:07 pm - 7:00 am

PDX

OPO

27h 53m

2 stops

11:20 am - 10:52 pm

OPO

PDX

43h 32m

2 stops

$854United Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$280

Best time to beat the crowds with an average 25% drop in price.

Most popular time to fly with an average 29% increase in price.

Flight from Portland to Porto

How does KAYAK find such low prices on flights from Washington 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 Washington to Porto.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Porto?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Washington 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 Washington 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 Washington with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington 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 Washington 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

Amares

Penafiel

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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Information on the airport you'll fly into in Porto

Porto (OPO)

OPO

$280 Find Cheap Flights from Washington to Porto

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

Cheap Flights from Washington to Porto

Recent round-trip flight deals from Washington to Porto

Recent one-way flight deals from Washington to Porto

Recent last minute flight deals from Washington to Porto

Good to know

FAQs for booking flights from Washington to Porto

How does KAYAK find such low prices on flights from Washington 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 Washington to Porto.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Porto?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Washington 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 Washington 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 Washington with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington 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 Washington 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 Washington

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