How long is the flight from State of Washington to Portugal?

Average flight duration from State of Washington to Portugal depends on which airport you fly into and out of. Flying from Seattle to Lisbon is 14h 10m on average, while flying from Spokane to Lisbon is 19h 10m on average. Lisbon is the most popular airport in Portugal.

What airlines fly to Portugal?

British Airways, United Airlines and Delta are the top three most popular airlines that fly to Portugal from State of Washington according to our data. British Airways is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 13 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

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

British Airways, Icelandair, and Air Canada are the most popular carriers operating from Washington to Portugal

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

Prices for flights from Washington to Portugal are updated daily.

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

As of January 2026, there are 13 operators available to choose from for flights from Washington to Portugal.

How old do you have to be to fly from Washington to Portugal?

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 Portugal.

What documentation or ID do you need to fly to Portugal?

The travel and health documents you'll need for your trip to Portugal 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 Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$266 Cheap Flights from Washington to Portugal in 2026

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One-way

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Cheap round-trip flights

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8:00 am - 6:30 pm

SEA

OPO

26h 30m

2 stops

1:45 pm - 1:20 pm

OPO

SEA

31h 35m

1 stop

$478Multiple Airlines

Tue, Feb 24 - Tue, Mar 3

8:00 am - 6:30 pm

SEA

OPO

26h 30m

2 stops

1:45 pm - 1:20 pm

OPO

SEA

31h 35m

1 stop

$479Multiple Airlines

Tue, Feb 24 - Tue, Mar 3

6:44 am - 7:40 am

SEA

OPO

16h 56m

2 stops

8:20 am - 11:04 pm

OPO

SEA

22h 44m

2 stops

$481Iberia

Tue, Feb 24 - Tue, Mar 3

8:00 am - 10:30 am

SEA

OPO

18h 30m

2 stops

5:00 am - 11:35 am

OPO

SEA

14h 35m

1 stop

$484Delta

Tue, Feb 24 - Tue, Mar 3

8:17 am - 10:15 am

SEA

LIS

17h 58m

1 stop

5:00 am - 1:10 pm

LIS

SEA

15h 10m

1 stop

$484United Airlines

Sun, Mar 1 - Tue, Mar 17

7:00 am - 10:30 am

PDX

OPO

20h 30m

2 stops

11:15 am - 12:25 pm

OPO

PDX

32h 10m

1 stop

$485Delta

Tue, Mar 10 - Tue, Mar 17

4:05 pm - 6:25 pm

SEA

FAO

19h 20m

1 stop

6:50 pm - 12:35 pm

FAO

SEA

24h 45m

1 stop

$485KLM

Sun, Mar 15 - Sun, Mar 22

3:05 pm - 10:25 pm

SEA

OPO

23h 20m

1 stop

11:15 am - 11:35 am

OPO

SEA

32h 20m

1 stop

$485KLM

Tue, Feb 24 - Tue, Mar 3

9:00 am - 9:30 am

SEA

OPO

16h 30m

2 stops

12:30 pm - 12:59 am

OPO

SEA

20h 29m

2 stops

$487United Airlines

Tue, Feb 24 - Tue, Mar 3

6:00 am - 6:25 pm

GEG

LIS

28h 25m

2 stops

8:25 am - 8:28 pm

LIS

GEG

44h 03m

2 stops

$495Iberia

Tue, Apr 21 - Tue, Apr 28

Air Canada flights from State of Washington to Portugal

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

Air Canada

Apr 27

PDX7:05 pmPortland

32h 00m

2 stops

LIS11:05 amLisbon Humberto Delgado

May 7

LIS5:05 amLisbon Humberto Delgado

17h 40m

2 stops

PDX2:45 pmPortland

$490

Air Canada

Apr 27

PDX7:05 pmPortland

32h 00m

2 stops

LIS11:05 amLisbon Humberto Delgado

May 4

LIS1:00 pmLisbon Humberto Delgado

34h 13m

2 stops

PDX3:13 pmPortland

$497

Air Canada

Apr 6

SEA8:00 amSeattle/Tacoma Intl

41h 20m

2 stops

LIS9:20 amLisbon Humberto Delgado

Apr 20

LIS11:25 amLisbon Humberto Delgado

18h 26m

2 stops

SEA9:51 pmSeattle/Tacoma Intl

$517

United Airlines flights from State of Washington to Portugal

Our best United Airlines deals on State of Washington to Portugal flight tickets

United Airlines

Mar 1

SEA8:17 amSeattle/Tacoma Intl

17h 58m

1 stop

LIS10:15 amLisbon Humberto Delgado

Mar 17

LIS5:00 amLisbon Humberto Delgado

15h 10m

1 stop

SEA1:10 pmSeattle/Tacoma Intl

$484

United Airlines

Feb 24

SEA9:00 amSeattle/Tacoma Intl

16h 30m

2 stops

OPO9:30 amPorto

Mar 3

OPO12:30 pmPorto

20h 29m

2 stops

SEA12:59 amSeattle/Tacoma Intl

$487

United Airlines

Feb 25

SEA7:00 amSeattle/Tacoma Intl

17h 10m

2 stops

LIS8:10 amLisbon Humberto Delgado

Mar 4

LIS6:10 amLisbon Humberto Delgado

15h 10m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$488

Fly from

Fly to

Route

Depart

Return

Price

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Tue 2/24

8:00 am-6:30 pm

2 stops26h 30m

Porto

Tue 3/3

1:45 pm-1:20 pm

1 stop31h 35m

$478

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Tue 2/24

8:00 am-6:30 pm

2 stops26h 30m

Porto

Tue 3/3

1:45 pm-1:20 pm

1 stop31h 35m

$479

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Tue 2/24

6:44 am-7:40 am

2 stops16h 56m

Porto

Tue 3/3

8:20 am-11:04 pm

2 stops22h 44m

$481

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Tue 2/24

8:00 am-10:30 am

2 stops18h 30m

Porto

Tue 3/3

5:00 am-11:35 am

1 stop14h 35m

$484

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 3/1

8:17 am-10:15 am

1 stop17h 58m

Lisbon Humberto Delgado

Tue 3/17

5:00 am-1:10 pm

1 stop15h 10m

$484

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 3/10

7:00 am-10:30 am

2 stops20h 30m

Porto

Tue 3/17

11:15 am-12:25 pm

1 stop32h 10m

$485

SeattleFaro

SEA - FAO

SEAFAO

Seattle/Tacoma Intl

Sun 3/15

4:05 pm-6:25 pm

1 stop19h 20m

Faro

Sun 3/22

6:50 pm-12:35 pm

1 stop24h 45m

$485

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Tue 2/24

3:05 pm-10:25 pm

1 stop23h 20m

Porto

Tue 3/3

11:15 am-11:35 am

1 stop32h 20m

$485

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Tue 2/24

9:00 am-9:30 am

2 stops16h 30m

Porto

Tue 3/3

12:30 pm-12:59 am

2 stops20h 29m

$487

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Tue 4/21

6:00 am-6:25 pm

2 stops28h 25m

Lisbon Humberto Delgado

Tue 4/28

8:25 am-8:28 pm

2 stops44h 03m

$495

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Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Other information

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from State of Washington is in January. Flight prices, which tend to average around $504, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from State of Washington during November instead. Flights to Portugal in November, while not as cheap as those in January, still average around $594.

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $839 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from State of Washington for as low as $742 on momondo.

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

You could potentially save up to 19% on your flight if you consider stops on a State of Washington to Portugal flight.

Cheap State of Washington to Portugal flight deals and tips

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

Fastest flight time	13h 40m
Direct flights	None

The fastest flight from State of Washington to Portugal takes 13h 40m

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

Search flight deals

When did momondo last update prices for flights from Washington to Portugal?
Prices for flights from Washington to Portugal are updated daily.
How many operators does momondo search for flights from Washington to Portugal?
As of January 2026, there are 13 operators available to choose from for flights from Washington to Portugal.
How old do you have to be to fly from Washington to Portugal?
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 Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents you'll need for your trip to Portugal 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 Portugal. 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 Portugal

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

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $348	Free Cancellation	Rating 7.1 606 reviews	Search Icelandair flights
KLM	PriceFrom $481	Free Cancellation	Rating 7.7 1,443 reviews	Search KLM flights
British Airways	PriceFrom $486	Free Cancellation	Rating 6.7 7,705 reviews	Search British Airways flights
Lufthansa	PriceFrom $488	Free Cancellation	Rating 6.8 7,756 reviews	Search Lufthansa flights
United Airlines	PriceFrom $498	Free Cancellation	Rating 7.4 9,215 reviews	Search United Airlines flights
Delta	PriceFrom $499	Free Cancellation	Rating 7.9 8,127 reviews	Search Delta flights
Air Canada	PriceFrom $543	Free Cancellation	Rating 7.1 10,667 reviews	Search Air Canada flights
Air France	PriceFrom $546	Free Cancellation	Rating 7.4 1,528 reviews	Search Air France flights
American Airlines	PriceFrom $558	Free Cancellation	Rating 7.2 11,206 reviews	Search American Airlines flights
SWISS	PriceFrom $562	Free Cancellation	Rating 7.6 1,864 reviews	Search SWISS flights

Why use momondo?

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

Finding the right flight to Portugal from Washington is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portugal quick and easy, saving you time and money.

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

All flight searches from Washington to Portugal on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Washington to Portugal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Washington to Portugal flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Portugal trip

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Find better results for your trip to Portugal

Popular cities in Portugal

Flights to Lisbonfrom $365

Flights to Portofrom $342

Flights to Funchalfrom $376

Flights to Farofrom $364

Flights to Ponta Delgadafrom $391

Flights to Lajesfrom $398

Flights to Hortafrom $577

Flights to Pico Islandfrom $561

Flights to Porto Santofrom $392

Flights to Velasfrom $575

Cheap flights from Washington to Portugal from $255

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 Portugal departing on 5/19. 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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Cheap round-trip flights

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Air Canada flights from State of Washington to Portugal

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

United Airlines flights from State of Washington to Portugal

Our best United Airlines deals on State of Washington to Portugal flight tickets

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Use the filters below to find and compare flights from Washington to Portugal that are best for you.

See travel insights to Portugal from

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

What is the cheapest month to fly to Portugal?

How far in advance should I book a flight to Portugal?

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

You could potentially save up to 19% on your flight if you consider stops on a State of Washington to Portugal flight.

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

British Airways, Icelandair, and Air Canada are the most popular carriers operating from Washington to Portugal

What airlines fly to Portugal?

How long is the flight from State of Washington to Portugal?

Average flight duration from State of Washington to Portugal depends on which airport you fly into and out of. Flying from Seattle to Lisbon is 14h 10m on average, while flying from Spokane to Lisbon is 19h 10m on average. Lisbon is the most popular airport in Portugal.

Cheap State of Washington to Portugal flight deals and tips

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

Fastest flight time

Direct flights

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

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

How old do you have to be to fly from Washington to Portugal?

What documentation or ID do you need to fly to Portugal?

Best airlines flying from State of Washington to Portugal

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

Why use momondo?

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

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

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

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

An easier way to manage your Portugal 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo