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 29% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 14 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, American Airlines, and United 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 13h 55m on average, while flying from Spokane to Lisbon is 17h 51m 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 May 2026, 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.

$303 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.

5:00 am - 8:10 am

GEG

LIS

19h 10m

3 stops

1:00 pm - 9:09 pm

LIS

GEG

40h 09m

2 stops

$728United Airlines

Wed, Nov 4 - Wed, Nov 11

10:00 am - 4:05 pm

PDX

LIS

46h 05m

2 stops

4:55 pm - 10:26 pm

LIS

PDX

37h 31m

2 stops

$768Scandinavian Airlines

Tue, Nov 3 - Mon, Nov 9

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

5:45 pm - 5:45 pm

PDX

LIS

16h 00m

1 stop

6:30 am - 10:59 pm

LIS

PDX

24h 29m

2 stops

$796Multiple Airlines

Sun, Nov 1 - Tue, Nov 24

6:45 pm - 9:45 pm

PDX

LIS

20h 00m

1 stop

6:30 am - 10:59 pm

LIS

PDX

24h 29m

2 stops

$797Multiple Airlines

Sun, Oct 25 - Tue, Nov 3

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

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

7:30 pm - 7:40 am

PDX

OPO

28h 10m

2 stops

8:40 pm - 9:57 pm

OPO

PDX

33h 17m

2 stops

$825Iberia

Mon, Sep 28 - Mon, Oct 19

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

Scandinavian Airlines flights from State of Washington to Portugal

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

Scandinavian Airlines

Nov 3

PDX10:00 amPortland

46h 05m

2 stops

LIS4:05 pmLisbon Humberto Delgado

Nov 9

LIS4:55 pmLisbon Humberto Delgado

37h 31m

2 stops

PDX10:26 pmPortland

$768

Scandinavian Airlines

Oct 2

SEA3:55 pmSeattle/Tacoma Intl

15h 40m

1 stop

LIS3:35 pmLisbon Humberto Delgado

Oct 10

LIS4:25 pmLisbon Humberto Delgado

29h 20m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$816

Scandinavian Airlines

Oct 27

SEA12:00 pmSeattle/Tacoma Intl

45h 05m

2 stops

LIS4:05 pmLisbon Humberto Delgado

Nov 9

LIS4:55 pmLisbon Humberto Delgado

39h 23m

2 stops

SEA12:18 amSeattle/Tacoma Intl

$820

Finnair flights from State of Washington to Portugal

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

Finnair

Oct 28

PDX7:45 amPortland

24h 40m

2 stops

LIS3:25 pmLisbon Humberto Delgado

Nov 16

LIS4:10 pmLisbon Humberto Delgado

35h 05m

2 stops

PDX7:15 pmPortland

$829

Finnair

Sep 22

PDX1:31 pmPortland

24h 24m

2 stops

LIS9:55 pmLisbon Humberto Delgado

Sep 30

LIS6:35 amLisbon Humberto Delgado

24h 15m

2 stops

PDX10:50 pmPortland

$907

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SpokaneLisbon

GEG - LIS

GEGLIS

Spokane

Wed 11/4

5:00 am-8:10 am

3 stops19h 10m

Lisbon Humberto Delgado

Wed 11/11

1:00 pm-9:09 pm

2 stops40h 09m

$728

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 11/3

10:00 am-4:05 pm

2 stops46h 05m

Lisbon Humberto Delgado

Mon 11/9

4:55 pm-10:26 pm

2 stops37h 31m

$768

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

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 11/1

5:45 pm-5:45 pm

1 stop16h 00m

Lisbon Humberto Delgado

Tue 11/24

6:30 am-10:59 pm

2 stops24h 29m

$796

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 10/25

6:45 pm-9:45 pm

1 stop20h 00m

Lisbon Humberto Delgado

Tue 11/3

6:30 am-10:59 pm

2 stops24h 29m

$797

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

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

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 9/28

7:30 pm-7:40 am

2 stops28h 10m

Porto

Mon 10/19

8:40 pm-9:57 pm

2 stops33h 17m

$825

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 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

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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 $339, 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 April instead. Flights to Portugal in April, while not as cheap as those in January, still average around $390.

How far in advance should I book a flight from Washington 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 $817 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 $727 on momondo.

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

You could potentially save up to 37% 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	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.

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Frequently asked questions about flying 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 May 2026, 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 $348	Free Cancellation	Rating 7.0 653 reviews	Search Icelandair flights
KLM	PriceFrom $481	Free Cancellation	Rating 7.8 1,513 reviews	Search KLM flights
Lufthansa	PriceFrom $482	Free Cancellation	Rating 6.8 7,985 reviews	Search Lufthansa flights
British Airways	PriceFrom $482	Free Cancellation	Rating 6.7 7,963 reviews	Search British Airways flights
United Airlines	PriceFrom $494	Free Cancellation	Rating 7.4 9,694 reviews	Search United Airlines flights
Delta	PriceFrom $499	Free Cancellation	Rating 7.9 8,455 reviews	Search Delta flights
Air France	PriceFrom $505	Free Cancellation	Rating 7.4 1,585 reviews	Search Air France flights
Air Canada	PriceFrom $543	Free Cancellation	Rating 7.1 11,012 reviews	Search Air Canada flights
Aer Lingus	PriceFrom $553	Free Cancellation	Rating 7.3 1,551 reviews	Search Aer Lingus flights
American Airlines	PriceFrom $558	Free Cancellation	Rating 7.1 11,668 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.

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Popular cities in Portugal

Flights to Lisbonfrom $435

Flights to Portofrom $438

Flights to Funchalfrom $620

Flights to Farofrom $621

Flights to Ponta Delgadafrom $610

Flights to Lajesfrom $621

Flights to Pico Islandfrom $663

Flights to Hortafrom $866

Flights to Porto Santofrom $1,061

Flights to Velasfrom $771

Cheap flights from Washington to Portugal from $303

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 10/31. 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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Scandinavian Airlines flights from State of Washington to Portugal

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

Finnair flights from State of Washington to Portugal

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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 from Washington to Portugal?

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

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

Frequently asked questions about flying from Washington 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?

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