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>

$244 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 8 - Tue, Aug 25

3:00 pm - 7:00 am

SEA

OPO

56h 00m

2 stops

12:15 pm - 9:17 am

OPO

SEA

29h 02m

2 stops

$567Air Canada

Sat, Aug 8 - Wed, Aug 26

3:00 pm - 7:00 am

SEA

OPO

56h 00m

2 stops

2:25 pm - 9:07 pm

OPO

SEA

38h 42m

2 stops

$576Air Canada

Mon, Aug 10 - Tue, Aug 25

7:20 pm - 7:00 am

SEA

OPO

27h 40m

2 stops

12:15 pm - 2:22 pm

OPO

SEA

34h 07m

2 stops

$577Air Canada

Wed, Aug 12 - Tue, Sep 1

7:30 am - 6:55 am

SEA

OPO

15h 25m

1 stop

12:15 pm - 10:00 am

OPO

SEA

29h 45m

2 stops

$578United Airlines

Tue, Aug 11 - Wed, Sep 2

10:40 pm - 6:55 am

SEA

OPO

24h 15m

2 stops

12:35 pm - 11:59 pm

OPO

SEA

19h 24m

2 stops

$580United Airlines

Mon, Apr 13 - Wed, Apr 29

6:40 pm - 10:00 pm

SEA

OPO

19h 20m

1 stop

5:00 am - 11:45 am

OPO

SEA

14h 45m

1 stop

$583Delta

Sat, Aug 8 - Wed, Aug 26

7:20 pm - 7:00 am

SEA

OPO

51h 40m

2 stops

2:25 pm - 9:07 pm

OPO

SEA

38h 42m

2 stops

$585Air Canada

Wed, Aug 12 - Mon, Aug 31

7:20 am - 10:30 am

SEA

OPO

19h 10m

1 stop

8:10 pm - 4:35 pm

OPO

SEA

28h 25m

1 stop

$588KLM

Tue, Apr 14 - Tue, Apr 28

5:35 pm - 10:15 pm

SEA

OPO

20h 40m

1 stop

6:50 pm - 11:45 am

OPO

SEA

24h 55m

1 stop

$589KLM

Mon, Apr 13 - Wed, Apr 22

7:05 am - 10:00 pm

PDX

OPO

30h 55m

2 stops

11:45 am - 11:10 am

OPO

PDX

31h 25m

1 stop

$679Delta

Useful Info

Low season	January
High season	July
Cheapest flight	$244

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

Most popular time to fly with an average 25% 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

Caminha

Santa Maria da Feira

Mira

Penafiel

Amares

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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Information on the airport you'll fly into in Porto

Porto (OPO)

OPO

$244 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