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>

$275 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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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

Tue, Apr 28 - Wed, May 6

3:30 pm - 5:50 pm

PDX

OPO

18h 20m

2 stops

6:30 pm - 6:00 pm

OPO

PDX

55h 30m

2 stops

$610Multiple Airlines

Tue, Apr 28 - Wed, May 6

3:30 pm - 3:00 pm

PDX

OPO

39h 30m

3 stops

10:00 am - 6:00 pm

OPO

PDX

64h 00m

3 stops

$653Multiple Airlines

Sun, May 3 - Tue, May 26

7:10 pm - 9:40 am

SEA

OPO

30h 30m

1 stop

4:50 pm - 5:15 pm

OPO

SEA

32h 25m

1 stop

$680Turkish Airlines

Sun, May 3 - Tue, May 26

7:10 pm - 9:40 am

SEA

OPO

30h 30m

1 stop

10:40 am - 5:15 pm

OPO

SEA

38h 35m

1 stop

$681Turkish Airlines

Wed, May 6 - Wed, May 13

7:10 pm - 9:40 am

SEA

OPO

30h 30m

1 stop

10:45 am - 5:15 pm

OPO

SEA

38h 30m

1 stop

$694Turkish Airlines

Thu, Sep 10 - Tue, Sep 22

12:35 pm - 9:45 am

SEA

OPO

37h 10m

1 stop

4:50 pm - 5:15 pm

OPO

SEA

32h 25m

1 stop

$696Turkish Airlines

Tue, Apr 28 - Wed, May 6

7:30 pm - 7:30 pm

PDX

OPO

16h 00m

1 stop

8:20 am - 10:56 pm

OPO

PDX

22h 36m

2 stops

$759British Airways

Tue, Apr 28 - Wed, May 6

1:23 pm - 7:30 pm

PDX

OPO

22h 07m

2 stops

8:20 am - 10:56 pm

OPO

PDX

22h 36m

2 stops

$764British Airways

Tue, Apr 28 - Thu, May 7

11:56 am - 8:00 pm

PDX

OPO

24h 04m

2 stops

8:40 pm - 11:54 pm

OPO

PDX

35h 14m

2 stops

$775Iberia

Sun, May 3 - Sun, May 10

1:52 pm - 4:00 pm

PDX

OPO

18h 08m

2 stops

8:20 am - 10:47 pm

OPO

PDX

22h 27m

2 stops

$814American Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$275

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

Most popular time to fly with an average 25% 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

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

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

$275 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