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

Lufthansa, Scandinavian Airlines, and Delta are the most popular carriers operating from Washington to 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 32% 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.

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 40m on average, while flying from Spokane to Lisbon is 19h 10m 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 October 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.

$297 Cheap Flights from Washington to Portugal in 2025/26

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Cheap round-trip flights

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10:47 am - 2:35 pmPDX-LIS

19h 48m2 stops

3:25 pm - 10:32 pmLIS-PDX

39h 07m2 stops

$514SWISS

Find Deal

Fri, Jan 30 - Sun, Feb 8

9:50 am - 7:55 amPDX-LIS

38h 05m2 stops

5:00 am - 6:30 pmLIS-PDX

21h 30m2 stops

$527Lufthansa

Find Deal

Wed, Feb 4 - Thu, Feb 12

3:00 pm - 6:00 pmSEA-FAO

19h 00m1 stop

8:10 pm - 11:45 amFAO-SEA

23h 35m1 stop

$531KLM

Find Deal

Sat, Nov 8 - Sat, Nov 22

9:59 am - 10:30 amPDX-OPO

16h 31m2 stops

5:00 am - 11:25 amOPO-PDX

14h 25m1 stop

$531KLM

Find Deal

Wed, Nov 12 - Sun, Nov 16

6:00 am - 8:00 amPDX-LIS

18h 00m2 stops

5:00 am - 11:25 amLIS-PDX

14h 25m1 stop

$531Delta

Find Deal

Mon, Nov 17 - Wed, Dec 3

1:25 pm - 10:30 amPDX-OPO

13h 05m1 stop

5:00 am - 11:25 amOPO-PDX

14h 25m1 stop

$532Delta

Find Deal

Wed, Nov 12 - Sun, Nov 16

6:25 am - 10:15 amPSC-LIS

43h 50m3 stops

5:00 am - 8:47 pmLIS-PSC

23h 47m2 stops

$532United Airlines

Find Deal

Thu, Nov 27 - Wed, Dec 3

7:00 am - 9:20 amPDX-LIS

18h 20m2 stops

5:00 am - 6:30 pmLIS-PDX

21h 30m2 stops

$532Air Canada

Find Deal

Tue, Feb 3 - Wed, Feb 11

3:15 pm - 9:20 amPDX-LIS

34h 05m2 stops

5:00 am - 6:30 pmLIS-PDX

21h 30m2 stops

$533Air Canada

Find Deal

Sat, Nov 29 - Thu, Dec 11

5:05 am - 9:20 amPDX-LIS

20h 15m2 stops

5:00 am - 12:19 amLIS-PDX

26h 19m3 stops

$542United Airlines

Find Deal

Tue, Mar 3 - Thu, Mar 12

Lufthansa flights from State of Washington to Portugal

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

Lufthansa

Feb 4

PDX9:50 amPortland

38h 05m

2 stops

LIS7:55 amLisbon Humberto Delgado

Feb 13

LIS5:00 amLisbon Humberto Delgado

21h 30m

2 stops

PDX6:30 pmPortland

$527

Find similar

Lufthansa

Feb 23

PDX9:50 amPortland

39h 30m

2 stops

LIS9:20 amLisbon Humberto Delgado

Mar 5

LIS5:00 amLisbon Humberto Delgado

21h 30m

2 stops

PDX6:30 pmPortland

$528

Find similar

Lufthansa

Dec 1

PDX9:50 amPortland

39h 05m

2 stops

LIS8:55 amLisbon Humberto Delgado

Dec 12

LIS6:10 amLisbon Humberto Delgado

20h 20m

2 stops

PDX6:30 pmPortland

$529

Find similar

British Airways flights from State of Washington to Portugal

Our best British Airways deals on State of Washington to Portugal flight tickets

British Airways

Mar 2

PDX5:45 pmPortland

17h 10m

1 stop

LIS6:55 pmLisbon Humberto Delgado

Mar 16

LIS7:05 amLisbon Humberto Delgado

16h 50m

1 stop

PDX4:55 pmPortland

$557

Find similar

British Airways

Mar 6

PDX5:45 pmPortland

16h 10m

1 stop

LIS5:55 pmLisbon Humberto Delgado

Mar 13

LIS7:05 amLisbon Humberto Delgado

16h 50m

1 stop

PDX4:55 pmPortland

$558

Find similar

British Airways

Feb 22

PDX5:45 pmPortland

16h 00m

1 stop

LIS5:45 pmLisbon Humberto Delgado

Mar 7

LIS3:55 pmLisbon Humberto Delgado

32h 00m

1 stop

PDX3:55 pmPortland

$559

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Fri 1/30

10:47 am-2:35 pm

2 stops19h 48m

Lisbon Humberto Delgado

Sun 2/8

3:25 pm-10:32 pm

2 stops39h 07m

$514

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 2/4

9:50 am-7:55 am

2 stops38h 05m

Lisbon Humberto Delgado

Thu 2/12

5:00 am-6:30 pm

2 stops21h 30m

$527

SeattleFaro

SEA - FAO

SEAFAO

Seattle/Tacoma Intl

Sat 11/8

3:00 pm-6:00 pm

1 stop19h 00m

Faro

Sat 11/22

8:10 pm-11:45 am

1 stop23h 35m

$531

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 11/12

9:59 am-10:30 am

2 stops16h 31m

Porto

Sun 11/16

5:00 am-11:25 am

1 stop14h 25m

$531

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 11/17

6:00 am-8:00 am

2 stops18h 00m

Lisbon Humberto Delgado

Wed 12/3

5:00 am-11:25 am

1 stop14h 25m

$531

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 11/12

1:25 pm-10:30 am

1 stop13h 05m

Porto

Sun 11/16

5:00 am-11:25 am

1 stop14h 25m

$532

PascoLisbon

PSC - LIS

PSCLIS

Pasco Tri Cities

Thu 11/27

6:25 am-10:15 am

3 stops43h 50m

Lisbon Humberto Delgado

Wed 12/3

5:00 am-8:47 pm

2 stops23h 47m

$532

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 2/3

7:00 am-9:20 am

2 stops18h 20m

Lisbon Humberto Delgado

Wed 2/11

5:00 am-6:30 pm

2 stops21h 30m

$532

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 11/29

3:15 pm-9:20 am

2 stops34h 05m

Lisbon Humberto Delgado

Thu 12/11

5:00 am-6:30 pm

2 stops21h 30m

$533

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 3/3

5:05 am-9:20 am

2 stops20h 15m

Lisbon Humberto Delgado

Thu 3/12

5:00 am-12:19 am

3 stops26h 19m

$542

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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 $720, 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 $758.

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 $930 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 $798 on momondo.

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

You could potentially save up to 7% 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

Direct flights	None

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 October 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 $415	Free Cancellation	Rating 7.0 553 reviews	Search Icelandair flights
Air Canada	PriceFrom $543	Free Cancellation	Rating 7.1 10,280 reviews	Search Air Canada flights
Lufthansa	PriceFrom $545	Free Cancellation	Rating 6.8 7,471 reviews	Search Lufthansa flights
British Airways	PriceFrom $561	Free Cancellation	Rating 6.7 7,450 reviews	Search British Airways flights
Air France	PriceFrom $565	Free Cancellation	Rating 7.4 1,468 reviews	Search Air France flights
United Airlines	PriceFrom $610	Free Cancellation	Rating 7.4 8,973 reviews	Search United Airlines flights
American Airlines	PriceFrom $627	Free Cancellation	Rating 7.2 11,048 reviews	Search American Airlines flights
Aer Lingus	PriceFrom $627	Free Cancellation	Rating 7.2 1,329 reviews	Search Aer Lingus flights
KLM	PriceFrom $632	Free Cancellation	Rating 7.7 1,402 reviews	Search KLM flights
Delta	PriceFrom $647	Free Cancellation	Rating 7.9 7,971 reviews	Search Delta 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 $352

Flights to Portofrom $324

Flights to Funchalfrom $404

Flights to Farofrom $402

Flights to Ponta Delgadafrom $427

Flights to Lajesfrom $477

Flights to Hortafrom $474

Flights to Pico Islandfrom $461

Flights to Porto Santofrom $555

Flights to Velasfrom $481

Cheap flights from Washington to Portugal from $297

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 10/20. 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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Filter for what you want

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Lufthansa flights from State of Washington to Portugal

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

British Airways flights from State of Washington to Portugal

Our best British Airways 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

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 7% 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?

Lufthansa, Scandinavian Airlines, and Delta 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 40m 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

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