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>

$306 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 15 - Thu, Sep 3

3:55 pm - 5:05 pm

SEA

OPO

17h 10m

1 stop

11:50 am - 1:45 pm

OPO

SEA

33h 55m

1 stop

$686Scandinavian Airlines

Tue, May 5 - Tue, May 12

7:10 pm - 11:30 pm

SEA

OPO

20h 20m

1 stop

4:50 pm - 5:15 pm

OPO

SEA

32h 25m

1 stop

$710Turkish Airlines

Tue, May 5 - Wed, May 13

7:10 pm - 10:00 am

SEA

OPO

30h 50m

1 stop

10:45 am - 5:15 pm

OPO

SEA

38h 30m

1 stop

$716Turkish Airlines

Sat, Sep 19 - Wed, Oct 7

7:45 pm - 7:00 am

PDX

OPO

51h 15m

2 stops

12:45 pm - 2:17 pm

OPO

PDX

33h 32m

2 stops

$849Air Canada

Sat, Sep 19 - Thu, Oct 8

7:45 pm - 7:00 am

PDX

OPO

51h 15m

2 stops

11:50 am - 9:31 am

OPO

PDX

53h 41m

2 stops

$863Air Canada

Sat, Sep 19 - Wed, Oct 7

11:15 pm - 9:45 am

PDX

OPO

26h 30m

2 stops

12:35 pm - 9:21 pm

OPO

PDX

16h 46m

1 stop

$875United Airlines

Sat, Sep 26 - Fri, Oct 16

10:59 pm - 9:45 am

PDX

OPO

26h 46m

2 stops

12:35 pm - 8:25 pm

OPO

PDX

39h 50m

2 stops

$887United Airlines

Mon, Sep 28 - Fri, Oct 9

7:00 am - 10:30 am

PDX

OPO

19h 30m

1 stop

5:00 am - 11:10 am

OPO

PDX

14h 10m

1 stop

$904KLM

Sun, Sep 20 - Fri, Oct 9

7:30 pm - 7:40 am

PDX

OPO

28h 10m

2 stops

12:25 pm - 9:57 pm

OPO

PDX

41h 32m

2 stops

$906Iberia

Sat, Sep 19 - Sun, Oct 4

1:30 pm - 7:40 am

PDX

OPO

58h 10m

2 stops

8:40 pm - 9:57 pm

OPO

PDX

57h 17m

2 stops

$907Iberia

Useful Info

Low season	January
High season	July
Cheapest flight	$306

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

Most popular time to fly with an average 27% increase in price.

Flight from Seattle 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

Chaves

Pinhao

Esposende

Viseu

Espinho

Arcos de Valdevez

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

$306 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