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 13h 30m on average, while flying from Spokane to Lisbon is 17h 57m on average. Lisbon is the most popular airport in Portugal.

What airlines fly to Portugal?

British Airways, Delta and United Airlines 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 35% 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?

Air Canada and British Airways 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 August 2025, there are 14 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.

$274 Cheap Flights from Washington to Portugal in 2025

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Find the cheapest flights from Washington to Portugal

Round-trip

One-way

Last minute

Cheap round-trip flights

2:35 pm - 8:20 pmSEA-LIS

21h 45m1 stop

9:20 pm - 5:00 pmLIS-SEA

27h 40m1 stop

$497Icelandair

Find Deal

sáb., nov. 15 - dom., nov. 23

3:35 pm - 8:20 pmSEA-LIS

21h 45m1 stop

9:20 pm - 5:00 pmLIS-SEA

27h 40m1 stop

$499Icelandair

Find Deal

sáb., nov. 1 - dom., nov. 16

8:15 am - 9:20 amSEA-LIS

17h 05m2 stops

6:10 am - 1:20 pmLIS-SEA

15h 10m1 stop

$520

Find Deal

jue., nov. 27 - mié., dic. 17

7:00 am - 8:55 amSEA-LIS

17h 55m2 stops

11:20 am - 4:07 pmLIS-SEA

36h 47m2 stops

$522United Airlines

Find Deal

sáb., dic. 6 - mar., dic. 16

5:30 am - 9:20 amSEA-LIS

19h 50m2 stops

5:00 am - 10:06 pmLIS-SEA

25h 06m2 stops

$523Air Canada

Find Deal

mié., oct. 22 - dom., nov. 9

5:50 am - 7:55 amSEA-LIS

18h 05m2 stops

5:00 am - 10:06 pmLIS-SEA

25h 06m2 stops

$524Air Canada

Find Deal

jue., feb. 5 - vie., feb. 20

7:00 am - 8:10 amSEA-LIS

17h 10m2 stops

11:20 am - 4:07 pmLIS-SEA

36h 47m2 stops

$526United Airlines

Find Deal

sáb., dic. 6 - mar., dic. 16

3:40 pm - 8:55 amSEA-LIS

33h 15m2 stops

5:00 am - 12:10 pmLIS-SEA

15h 10m1 stop

$529Lufthansa

Find Deal

vie., feb. 6 - lun., feb. 16

8:15 am - 8:55 amSEA-LIS

17h 40m1 stop

5:00 am - 12:10 pmLIS-SEA

15h 10m1 stop

$530

Find Deal

mié., oct. 29 - mar., nov. 11

3:40 pm - 8:55 amSEA-LIS

33h 15m2 stops

12:30 pm - 12:10 pmLIS-SEA

31h 40m1 stop

$548Lufthansa

Find Deal

vie., nov. 14 - lun., dic. 1

United Airlines flights from State of Washington to Portugal

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

United Airlines

Dec 6

SEA7:00 amSeattle/Tacoma Intl

17h 55m

2 stops

LIS8:55 amLisbon Humberto Delgado

Dec 16

LIS11:20 amLisbon Humberto Delgado

36h 47m

2 stops

SEA4:07 pmSeattle/Tacoma Intl

$522

Find similar

United Airlines

Dec 6

SEA7:00 amSeattle/Tacoma Intl

17h 10m

2 stops

LIS8:10 amLisbon Humberto Delgado

Dec 16

LIS11:20 amLisbon Humberto Delgado

36h 47m

2 stops

SEA4:07 pmSeattle/Tacoma Intl

$526

Find similar

United Airlines

Nov 10

SEA11:59 pmSeattle/Tacoma Intl

25h 21m

2 stops

LIS9:20 amLisbon Humberto Delgado

Nov 24

LIS5:00 amLisbon Humberto Delgado

15h 10m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

$528

Find similar

Delta flights from State of Washington to Portugal

Our best Delta deals on State of Washington to Portugal flight tickets

Delta

Nov 18

PDX7:00 amPortland

18h 00m

1 stop

LIS9:00 amLisbon Humberto Delgado

Nov 25

LIS11:15 amLisbon Humberto Delgado

29h 23m

2 stops

PDX8:38 amPortland

$637

Find similar

Delta

Nov 2

GEG9:17 amSpokane

15h 38m

2 stops

LIS8:55 amLisbon Humberto Delgado

Nov 14

LIS10:00 amLisbon Humberto Delgado

20h 47m

2 stops

GEG10:47 pmSpokane

$697

Find similar

Delta

Sep 21

SEA5:40 pmSeattle/Tacoma Intl

13h 55m

1 stop

OPO3:35 pmPorto

Nov 21

OPO11:25 amPorto

19h 59m

2 stops

SEA11:24 pmSeattle/Tacoma Intl

$738

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

sáb. 11/15

2:35 pm-8:20 pm

1 stop21h 45m

Lisbon Humberto Delgado

dom. 11/23

9:20 pm-5:00 pm

1 stop27h 40m

$497

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

sáb. 11/1

3:35 pm-8:20 pm

1 stop21h 45m

Lisbon Humberto Delgado

dom. 11/16

9:20 pm-5:00 pm

1 stop27h 40m

$499

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

jue. 11/27

8:15 am-9:20 am

2 stops17h 05m

Lisbon Humberto Delgado

mié. 12/17

6:10 am-1:20 pm

1 stop15h 10m

$520

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

sáb. 12/6

7:00 am-8:55 am

2 stops17h 55m

Lisbon Humberto Delgado

mar. 12/16

11:20 am-4:07 pm

2 stops36h 47m

$522

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

mié. 10/22

5:30 am-9:20 am

2 stops19h 50m

Lisbon Humberto Delgado

dom. 11/9

5:00 am-10:06 pm

2 stops25h 06m

$523

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

jue. 2/5

5:50 am-7:55 am

2 stops18h 05m

Lisbon Humberto Delgado

vie. 2/20

5:00 am-10:06 pm

2 stops25h 06m

$524

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

sáb. 12/6

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

mar. 12/16

11:20 am-4:07 pm

2 stops36h 47m

$526

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

vie. 2/6

3:40 pm-8:55 am

2 stops33h 15m

Lisbon Humberto Delgado

lun. 2/16

5:00 am-12:10 pm

1 stop15h 10m

$529

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

mié. 10/29

8:15 am-8:55 am

1 stop17h 40m

Lisbon Humberto Delgado

mar. 11/11

5:00 am-12:10 pm

1 stop15h 10m

$530

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

vie. 11/14

3:40 pm-8:55 am

2 stops33h 15m

Lisbon Humberto Delgado

lun. 12/1

12:30 pm-12:10 pm

1 stop31h 40m

$548

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 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 $759, 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 February instead. Flights to Portugal in February, while not as cheap as those in January, still average around $761.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Monday is the cheapest day to fly to Portugal from State of Washington. The lowest ticket price found for a Monday departure recently was $908. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $1,111.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the afternoon. Flights from State of Washington to Portugal during this time can be as low as $959. At noon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,074 per ticket.

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 $952 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 $805 on momondo.

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

You could potentially save up to 27% 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

Best Price Found	$274
Fastest flight time	12h 50m
Direct flights	None
Airports in Portugal	5 airports

The best one-way flight to Portugal from State of Washington in the past 72 hours is $274. The best round-trip flight deal from State of Washington to Portugal found on momondo in the last 72 hours is $497.

The fastest flight from State of Washington to Portugal takes 12h 50m

There are no direct flights from State of Washington to Portugal. Popular non-direct routes for this connection are Seattle/Tacoma Intl Airport - Lisbon Humberto Delgado Airport, Seattle/Tacoma Intl Airport - Porto Airport and Portland Airport - Lisbon Humberto Delgado Airport.

There are 5 airports near Portugal: Faro (FAO), Lisbon Humberto Delgado (LIS), Ponta Delgada Nordela (PDL), Funchal Madeira (FNC), Porto (OPO)

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 August 2025, there are 14 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 $466	Free Cancellation	Rating 7.0 526 reviews	Search Icelandair flights
British Airways	PriceFrom $572	Free Cancellation	Rating 6.6 7,266 reviews	Search British Airways flights
Lufthansa	PriceFrom $581	Free Cancellation	Rating 6.8 7,317 reviews	Search Lufthansa flights
American Airlines	PriceFrom $621	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Air France	PriceFrom $643	Free Cancellation	Rating 7.4 1,467 reviews	Search Air France flights
Turkish Airlines	PriceFrom $646	Free Cancellation	Rating 7.3 3,940 reviews	Search Turkish Airlines flights
KLM	PriceFrom $649	Free Cancellation	Rating 7.8 1,381 reviews	Search KLM flights
Scandinavian Airlines	PriceFrom $652	Free Cancellation	Rating 7.4 1,468 reviews	Search Scandinavian Airlines flights
Delta	PriceFrom $659	Free Cancellation	Rating 8.0 7,980 reviews	Search Delta flights
Aer Lingus	PriceFrom $660	Free Cancellation	Rating 7.1 1,214 reviews	Search Aer Lingus 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

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

Popular cities in Portugal

Flights to Lisbonfrom $368

Flights to Portofrom $340

Flights to Funchalfrom $401

Flights to Farofrom $424

Flights to Ponta Delgadafrom $450

Flights to Lajesfrom $544

Flights to Hortafrom $591

Flights to Pico Islandfrom $560

Flights to Porto Santofrom $639

Flights to Velasfrom $594

Cheap flights from Washington to Portugal from $274

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 9/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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Find the cheapest flights from Washington to Portugal

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Cheap last minute flights

United Airlines flights from State of Washington to Portugal

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

Delta flights from State of Washington to Portugal

Our best Delta 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.

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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

What is the cheapest month to fly to Portugal?

What is the cheapest day to depart on your flight to Portugal?

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the afternoon. Flights from State of Washington to Portugal during this time can be as low as $959. At noon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,074 per ticket.

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 27% 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?

Air Canada and British Airways 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 13h 30m on average, while flying from Spokane to Lisbon is 17h 57m 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

Best Price Found

Fastest flight time

Direct flights

Airports in Portugal

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