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>

$321 CHEAP FLIGHTS from Washington to Porto

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Cheap Flights from Washington to Porto

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington 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.

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

Wed, Oct 22 - Mon, Nov 3

5:00 am - 9:45 amSEA-OPO

20h 45m2 stops

12:30 pm - 12:10 pmOPO-SEA

31h 40m1 stop

$603United Airlines

Find Deal

Wed, Oct 22 - Mon, Nov 3

5:00 am - 9:45 amSEA-OPO

20h 45m2 stops

12:30 pm - 6:25 pmOPO-SEA

37h 55m2 stops

$613United Airlines

Find Deal

Wed, Oct 22 - Mon, Nov 3

6:50 pm - 11:20 pmSEA-OPO

20h 30m1 stop

12:30 pm - 12:10 pmOPO-SEA

31h 40m1 stop

$616Lufthansa

Find Deal

Mon, Aug 18 - Fri, Sep 5

4:00 pm - 11:00 amSEA-OPO

35h 00m1 stop

5:55 pm - 1:50 pmOPO-SEA

27h 55m1 stop

$617Scandinavian Airlines

Find Deal

Mon, Oct 27 - Mon, Nov 3

3:00 pm - 2:55 pmSEA-OPO

16h 55m1 stop

12:30 pm - 12:10 pmOPO-SEA

31h 40m1 stop

$620Lufthansa

Find Deal

Tue, Oct 28 - Tue, Nov 4

2:40 pm - 10:50 amSEA-OPO

13h 10m1 stop

11:45 am - 10:56 amOPO-SEA

31h 11m2 stops

$622Delta

Find Deal

Wed, Oct 22 - Tue, Nov 4

6:35 pm - 8:25 amSEA-OPO

29h 50m1 stop

11:45 am - 10:56 amOPO-SEA

31h 11m2 stops

$623Delta

Find Deal

Sun, Oct 26 - Tue, Nov 4

10:00 am - 7:40 amSEA-OPO

38h 40m2 stops

8:40 pm - 11:04 pmOPO-SEA

34h 24m2 stops

$626Iberia

Find Deal

Fri, Oct 24 - Tue, Nov 4

7:51 am - 11:40 amSEA-OPO

19h 49m2 stops

8:40 pm - 11:04 pmOPO-SEA

34h 24m2 stops

$668Iberia

Find Deal

Fri, Aug 22 - Fri, Sep 5

4:00 pm - 6:15 pmSEA-OPO

18h 15m2 stops

5:55 pm - 1:50 pmOPO-SEA

27h 55m1 stop

$788Scandinavian Airlines

Find Deal

Useful Info

Low season	February
High season	July
Cheapest flight	$321

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

Viseu

Esposende

Arcos de Valdevez

Ponte de Lima

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)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

OPO

$321 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