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 29% 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?

United Airlines, British Airways, and American Airlines are the most popular carriers operating from Washington 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 16h 40m on average, while flying from Spokane to Lisbon is 19h 20m on average. Lisbon is the most popular airport in 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 March 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.

$247 Cheap Flights from Washington to Portugal in 2026

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Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

12:00 pm - 8:40 pm

SEA

LIS

24h 40m

2 stops

4:25 pm - 1:45 pm

LIS

SEA

29h 20m

1 stop

$554Scandinavian Airlines

Wed, Aug 19 - Sat, Oct 10

3:55 pm - 9:05 am

SEA

LIS

33h 10m

1 stop

4:25 pm - 1:45 pm

LIS

SEA

29h 20m

1 stop

$555Scandinavian Airlines

Tue, Aug 18 - Sat, Oct 10

2:10 pm - 11:30 pm

SEA

LIS

25h 20m

1 stop

6:15 am - 10:42 pm

LIS

SEA

24h 27m

2 stops

$561Lufthansa

Mon, Apr 13 - Mon, Apr 20

6:50 pm - 10:45 pm

SEA

LIS

19h 55m

1 stop

5:05 am - 12:20 pm

LIS

SEA

15h 15m

1 stop

$562Lufthansa

Wed, Apr 15 - Sat, Apr 25

11:59 pm - 1:50 pm

PDX

FAO

29h 51m

2 stops

3:25 pm - 8:48 pm

FAO

PDX

37h 23m

2 stops

$608United Airlines

Mon, Apr 13 - Thu, Apr 23

6:40 pm - 10:25 pm

SEA

LIS

19h 45m

1 stop

5:00 am - 11:40 am

LIS

SEA

14h 40m

1 stop

$609Multiple Airlines

Mon, Apr 13 - Wed, Apr 29

3:30 pm - 5:50 pm

PDX

OPO

18h 20m

2 stops

6:30 pm - 6:00 pm

OPO

PDX

55h 30m

2 stops

$610Multiple Airlines

Tue, Apr 28 - Wed, May 6

5:05 am - 10:45 pm

GEG

LIS

33h 40m

2 stops

1:00 pm - 9:11 pm

LIS

GEG

40h 11m

2 stops

$619United Airlines

Mon, Apr 13 - Mon, Apr 20

7:30 pm - 11:05 pm

PDX

LIS

19h 35m

1 stop

7:20 am - 5:40 pm

LIS

PDX

18h 20m

1 stop

$665British Airways

Thu, Apr 16 - Thu, Apr 23

7:30 pm - 8:35 pm

PDX

OPO

17h 05m

1 stop

8:55 pm - 5:40 pm

OPO

PDX

28h 45m

1 stop

$742British Airways

Sun, Apr 19 - Tue, May 5

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 16

PDX7:05 pmPortland

30h 15m

2 stops

LIS9:20 amLisbon Humberto Delgado

May 5

LIS11:25 amLisbon Humberto Delgado

41h 33m

2 stops

PDX8:58 pmPortland

$738

Air Canada

Apr 19

GEG1:46 pmSpokane

37h 14m

2 stops

LIS11:00 amLisbon Humberto Delgado

May 1

LIS11:25 amLisbon Humberto Delgado

35h 53m

2 stops

GEG3:18 pmSpokane

$755

United Airlines flights from State of Washington to Portugal

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

United Airlines

Apr 17

SEA6:50 pmSeattle/Tacoma Intl

19h 55m

1 stop

LIS10:45 pmLisbon Humberto Delgado

Apr 21

LIS5:05 amLisbon Humberto Delgado

15h 15m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

$607

United Airlines

Apr 13

PDX11:59 pmPortland

29h 51m

2 stops

FAO1:50 pmFaro

Apr 23

FAO3:25 pmFaro

37h 23m

2 stops

PDX8:48 pmPortland

$608

United Airlines

Apr 17

SEA6:50 pmSeattle/Tacoma Intl

19h 55m

1 stop

LIS10:45 pmLisbon Humberto Delgado

Apr 21

LIS11:25 amLisbon Humberto Delgado

32h 23m

2 stops

SEA11:48 amSeattle/Tacoma Intl

$610

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 8/19

12:00 pm-8:40 pm

2 stops24h 40m

Lisbon Humberto Delgado

Sat 10/10

4:25 pm-1:45 pm

1 stop29h 20m

$554

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 8/18

3:55 pm-9:05 am

1 stop33h 10m

Lisbon Humberto Delgado

Sat 10/10

4:25 pm-1:45 pm

1 stop29h 20m

$555

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 4/13

2:10 pm-11:30 pm

1 stop25h 20m

Lisbon Humberto Delgado

Mon 4/20

6:15 am-10:42 pm

2 stops24h 27m

$561

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 4/15

6:50 pm-10:45 pm

1 stop19h 55m

Lisbon Humberto Delgado

Sat 4/25

5:05 am-12:20 pm

1 stop15h 15m

$562

PortlandFaro

PDX - FAO

PDXFAO

Portland

Mon 4/13

11:59 pm-1:50 pm

2 stops29h 51m

Faro

Thu 4/23

3:25 pm-8:48 pm

2 stops37h 23m

$608

Quickest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 4/13

6:40 pm-10:25 pm

1 stop19h 45m

Lisbon Humberto Delgado

Wed 4/29

5:00 am-11:40 am

1 stop14h 40m

$609

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 4/28

3:30 pm-5:50 pm

2 stops18h 20m

Porto

Wed 5/6

6:30 pm-6:00 pm

2 stops55h 30m

$610

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Mon 4/13

5:05 am-10:45 pm

2 stops33h 40m

Lisbon Humberto Delgado

Mon 4/20

1:00 pm-9:11 pm

2 stops40h 11m

$619

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Thu 4/16

7:30 pm-11:05 pm

1 stop19h 35m

Lisbon Humberto Delgado

Thu 4/23

7:20 am-5:40 pm

1 stop18h 20m

$665

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 4/19

7:30 pm-8:35 pm

1 stop17h 05m

Porto

Tue 5/5

8:55 pm-5:40 pm

1 stop28h 45m

$742

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 $492, 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 $552.

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 $812 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 $735 on momondo.

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	12h 35m
Direct flights	None

The fastest flight from State of Washington to Portugal takes 12h 35m

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 March 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 7.0 625 reviews	Search Icelandair flights
KLM	PriceFrom $481	Free Cancellation	Rating 7.8 1,475 reviews	Search KLM flights
British Airways	PriceFrom $482	Free Cancellation	Rating 6.7 7,805 reviews	Search British Airways flights
Lufthansa	PriceFrom $484	Free Cancellation	Rating 6.8 7,858 reviews	Search Lufthansa flights
United Airlines	PriceFrom $494	Free Cancellation	Rating 7.4 9,452 reviews	Search United Airlines flights
Delta	PriceFrom $499	Free Cancellation	Rating 7.9 8,314 reviews	Search Delta flights
Air France	PriceFrom $530	Free Cancellation	Rating 7.4 1,547 reviews	Search Air France flights
Air Canada	PriceFrom $543	Free Cancellation	Rating 7.1 10,819 reviews	Search Air Canada flights
Aer Lingus	PriceFrom $553	Free Cancellation	Rating 7.2 1,481 reviews	Search Aer Lingus flights
American Airlines	PriceFrom $558	Free Cancellation	Rating 7.1 11,488 reviews	Search American Airlines 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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Popular cities in Portugal

Flights to Lisbonfrom $435

Flights to Portofrom $426

Flights to Funchalfrom $507

Flights to Farofrom $430

Flights to Ponta Delgadafrom $529

Flights to Lajesfrom $569

Flights to Pico Islandfrom $654

Flights to Hortafrom $599

Flights to Porto Santofrom $424

Flights to Velasfrom $586

Cheap flights from Washington to Portugal from $247

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 4/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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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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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?

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

What airlines fly to Portugal?

How long is the flight from State of Washington to 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

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?

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

State of Washington flight routes

According to popular flight searches on momondo this year

Portugal flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Portugal

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Portugal

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

Complete your trip to Portugal

Explore popular destinations other users love

According to popular flight searches on momondo this year