What airlines fly to Porto?

Delta, KLM and United Airlines are the top three most popular airlines that fly to Porto from State of Washington according to our data. Delta is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 7 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Washington to Porto?

American Airlines, British Airways, and United Airlines are the most popular carriers operating from Washington to Porto

When did momondo last update prices for flights from Washington to Porto Airport?

Prices for flights from Washington to Porto Airport are updated daily.

How many operators does momondo search for flights from Washington to Porto Airport?

There are 7 operators available for flights from Washington to Porto Airport as of May 2026.

How old do you have to be to fly from Washington to Porto Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Porto Airport.

What documentation or ID do you need to fly to Porto Airport?

The travel and health documents you'll need for your trip to Porto Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Porto Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$316 Cheap Flights from Washington to Porto in 2026

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Find the cheapest flights from Washington to Porto

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:45 pm - 8:00 pm

PDX

OPO

18h 15m

2 stops

8:20 am - 11:51 pm

OPO

PDX

23h 31m

2 stops

$754Multiple Airlines

Sun, Nov 1 - Tue, Nov 24

1:30 pm - 4:00 pm

PDX

OPO

18h 30m

2 stops

8:20 am - 11:51 pm

OPO

PDX

23h 31m

2 stops

$756American Airlines

Sun, Oct 18 - Tue, Nov 17

10:35 am - 4:40 pm

SEA

OPO

22h 05m

2 stops

8:40 pm - 9:18 pm

OPO

SEA

32h 38m

2 stops

$777British Airways

Sun, Nov 1 - Wed, Nov 11

7:10 pm - 3:45 pm

SEA

OPO

36h 35m

1 stop

10:40 am - 5:15 pm

OPO

SEA

38h 35m

1 stop

$791Turkish Airlines

Wed, Sep 16 - Tue, Sep 22

7:45 pm - 7:00 am

PDX

OPO

51h 15m

2 stops

6:15 am - 9:25 am

OPO

PDX

35h 10m

2 stops

$793Air Canada

Sat, Oct 17 - Fri, Nov 20

10:10 am - 6:30 pm

PDX

OPO

24h 20m

2 stops

6:15 am - 2:40 pm

OPO

PDX

40h 25m

2 stops

$799Air Canada

Wed, Oct 21 - Fri, Nov 20

2:06 pm - 4:00 pm

SEA

OPO

17h 54m

2 stops

12:25 pm - 12:36 am

OPO

SEA

20h 11m

2 stops

$799Iberia

Wed, Aug 12 - Thu, Aug 27

3:30 pm - 7:00 am

PDX

OPO

55h 30m

2 stops

6:00 am - 12:02 am

OPO

PDX

26h 02m

2 stops

$801Lufthansa

Sat, Oct 17 - Wed, Nov 18

10:35 am - 4:40 pm

SEA

OPO

22h 05m

2 stops

6:35 pm - 11:30 am

OPO

SEA

24h 55m

1 stop

$807British Airways

Sun, Nov 1 - Wed, Nov 11

7:10 pm - 9:45 am

SEA

OPO

30h 35m

1 stop

10:40 am - 5:15 pm

OPO

SEA

38h 35m

1 stop

$830Turkish Airlines

Thu, Sep 10 - Mon, Sep 28

Air Canada flights from State of Washington to Porto

Our best Air Canada deals on State of Washington to Porto flight tickets

Air Canada

Oct 17

PDX7:45 pmPortland

51h 15m

2 stops

OPO7:00 amPorto

Nov 20

OPO6:15 amPorto

35h 10m

2 stops

PDX9:25 amPortland

$793

Air Canada

Oct 21

PDX10:10 amPortland

24h 20m

2 stops

OPO6:30 pmPorto

Nov 20

OPO6:15 amPorto

40h 25m

2 stops

PDX2:40 pmPortland

$799

Air Canada

Oct 15

PDX3:30 pmPortland

55h 30m

2 stops

OPO7:00 amPorto

Nov 20

OPO6:15 amPorto

20h 15m

2 stops

PDX6:30 pmPortland

$843

Lufthansa flights from State of Washington to Porto

Our best Lufthansa deals on State of Washington to Porto flight tickets

Lufthansa

Oct 17

PDX3:30 pmPortland

55h 30m

2 stops

OPO7:00 amPorto

Nov 18

OPO6:00 amPorto

26h 02m

2 stops

PDX12:02 amPortland

$801

Lufthansa

Oct 15

PDX3:30 pmPortland

31h 40m

2 stops

OPO7:10 amPorto

Nov 17

OPO12:30 pmPorto

19h 32m

2 stops

PDX12:02 amPortland

$851

Lufthansa

Aug 12

SEA2:10 pmSeattle/Tacoma Intl

17h 30m

1 stop

OPO3:40 pmPorto

Aug 27

OPO6:20 amPorto

18h 39m

1 stop

SEA4:59 pmSeattle/Tacoma Intl

$853

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 11/1

5:45 pm-8:00 pm

2 stops18h 15m

Porto

Tue 11/24

8:20 am-11:51 pm

2 stops23h 31m

$754

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 10/18

1:30 pm-4:00 pm

2 stops18h 30m

Porto

Tue 11/17

8:20 am-11:51 pm

2 stops23h 31m

$756

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Sun 11/1

10:35 am-4:40 pm

2 stops22h 05m

Porto

Wed 11/11

8:40 pm-9:18 pm

2 stops32h 38m

$777

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Wed 9/16

7:10 pm-3:45 pm

1 stop36h 35m

Porto

Tue 9/22

10:40 am-5:15 pm

1 stop38h 35m

$791

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sat 10/17

7:45 pm-7:00 am

2 stops51h 15m

Porto

Fri 11/20

6:15 am-9:25 am

2 stops35h 10m

$793

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 10/21

10:10 am-6:30 pm

2 stops24h 20m

Porto

Fri 11/20

6:15 am-2:40 pm

2 stops40h 25m

$799

Quickest round-trip

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Wed 8/12

2:06 pm-4:00 pm

2 stops17h 54m

Porto

Thu 8/27

12:25 pm-12:36 am

2 stops20h 11m

$799

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sat 10/17

3:30 pm-7:00 am

2 stops55h 30m

Porto

Wed 11/18

6:00 am-12:02 am

2 stops26h 02m

$801

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Sun 11/1

10:35 am-4:40 pm

2 stops22h 05m

Porto

Wed 11/11

6:35 pm-11:30 am

1 stop24h 55m

$807

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Thu 9/10

7:10 pm-9:45 am

1 stop30h 35m

Porto

Mon 9/28

10:40 am-5:15 pm

1 stop38h 35m

$830

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Porto?

The month of March is, on average, the cheapest month to fly to Porto from State of Washington, with most prices found around $478. If you aren’t able to travel during the month of March, then book flights to Porto from State of Washington during January instead. Flights to Porto in January, while not as cheap as those in March, still average around $478.

How far in advance should I book a flight from Washington to Porto?

You are more likely to see cheaper flights to Porto from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $899 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from State of Washington for as low as $746 on momondo.

Can stopping save me money on State of Washington to Porto flights?

You could potentially save up to 57% on your flight if you consider stops on a State of Washington to Porto flight.

Cheap State of Washington to Porto flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Porto

Fastest flight time	14h 49m
Direct flights	None

The fastest flight from State of Washington to Porto takes 14h 49m

There are no direct flights from State of Washington to Porto. There are no popular flight routes from State of Washington to Porto.

Search flight deals

Frequently asked questions about flying from Washington to Porto

When did momondo last update prices for flights from Washington to Porto Airport?
Prices for flights from Washington to Porto Airport are updated daily.
How many operators does momondo search for flights from Washington to Porto Airport?
There are 7 operators available for flights from Washington to Porto Airport as of May 2026.
How old do you have to be to fly from Washington to Porto Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Porto Airport.
What documentation or ID do you need to fly to Porto Airport?
The travel and health documents you'll need for your trip to Porto Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Porto Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Porto

Compare and see reviews for airlines that fly from State of Washington to Porto with momondo

Airline	Rating	Free Cancellation	Price
KLM	PriceFrom $490	Free Cancellation	Rating 7.8 1,510 reviews	Search KLM flights
Lufthansa	PriceFrom $503	Free Cancellation	Rating 6.8 7,982 reviews	Search Lufthansa flights
Delta	PriceFrom $582	Free Cancellation	Rating 7.9 8,457 reviews	Search Delta flights
United Airlines	PriceFrom $651	Free Cancellation	Rating 7.4 9,693 reviews	Search United Airlines flights
Air Canada	PriceFrom $660	Free Cancellation	Rating 7.1 11,008 reviews	Search Air Canada flights
Turkish Airlines	PriceFrom $665	Free Cancellation	Rating 7.4 4,356 reviews	Search Turkish Airlines flights
Air France	PriceFrom $1,029	Free Cancellation	Rating 7.4 1,585 reviews	Search Air France flights

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Coimbra

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Aveiro

Matosinhos

Lamego

Esposende

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Pinhao

Guimarães

Espinho

Arcos de Valdevez

Ponte de Lima

Viseu

Curia

Penafiel

Mesao Frio

Mira

Baiao

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Porto?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Porto. momondo saves you time and could save you money on your trip.

Can I find flights from Washington to Porto with flexible booking policies on momondo?

momondo does allow users to show only those flights to Porto from Washington which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Washington to Porto?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Porto.

I’m not ready to book a flight from Washington to Porto right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington to Porto flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Washington to Porto from $316

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Porto departing on 8/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Air Canada flights from State of Washington to Porto

Our best Air Canada deals on State of Washington to Porto flight tickets

Lufthansa flights from State of Washington to Porto

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How to get the cheapest flight ticket from State of Washington to Porto

What is the cheapest month to fly to Porto?

How far in advance should I book a flight from Washington to Porto?

Can stopping save me money on State of Washington to Porto flights?

What is the cheapest airline that flies from Washington to Porto?

What airlines fly to Porto?

Cheap State of Washington to Porto flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Porto

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Frequently asked questions about flying from Washington to Porto

Best airlines flying from State of Washington to Porto

Compare and see reviews for airlines that fly from State of Washington to Porto with momondo

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Why use momondo?

An easier way to manage your Porto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Portugal

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List of cabin classes available on flights landing in Porto. Availability may vary depending on flight origin and airline.

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