What airlines fly to Portugal?

Delta, British Airways and United Airlines are the top three most popular airlines that fly to Portugal from State of Washington according to our data. Delta 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?

United Airlines, Delta, and KLM 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 14h 30m on average, while flying from Spokane to Lisbon is 17h 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 June 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.

$242 Cheap Flights from Washington to Portugal in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Portugal

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:55 pm - 10:05 pm

SEA

LIS

22h 10m

1 stop

10:55 pm - 1:45 pm

LIS

SEA

22h 50m

1 stop

$611Scandinavian Airlines

Fri, Sep 4 - Sat, Sep 12

5:40 am - 9:20 am

SEA

LIS

19h 40m

2 stops

6:45 am - 6:32 pm

LIS

SEA

19h 47m

2 stops

$696Air Canada

Tue, Oct 13 - Wed, Oct 21

2:45 pm - 12:50 pm

PDX

LIS

14h 05m

1 stop

2:00 pm - 5:00 pm

LIS

PDX

35h 00m

1 stop

$697Icelandair

Mon, Nov 2 - Tue, Nov 10

2:45 pm - 12:50 pm

PDX

LIS

14h 05m

1 stop

2:00 pm - 5:00 pm

LIS

PDX

35h 00m

1 stop

$700Icelandair

Sat, Nov 7 - Thu, Nov 12

10:00 am - 9:50 am

PDX

LIS

15h 50m

2 stops

5:00 am - 8:46 pm

LIS

PDX

23h 46m

2 stops

$716Multiple Airlines

Mon, Nov 2 - Tue, Nov 10

7:45 am - 11:00 am

SEA

LIS

19h 15m

1 stop

5:00 am - 12:00 pm

LIS

SEA

15h 00m

1 stop

$716Multiple Airlines

Wed, Nov 4 - Wed, Nov 18

8:10 am - 10:20 am

SEA

LIS

18h 10m

1 stop

5:00 am - 12:00 pm

LIS

SEA

15h 00m

1 stop

$733United Airlines

Mon, Nov 9 - Wed, Nov 18

3:15 pm - 9:50 am

SEA

LIS

34h 35m

2 stops

5:00 am - 12:00 pm

LIS

SEA

15h 00m

1 stop

$736Lufthansa

Sun, Nov 8 - Wed, Nov 18

3:15 pm - 9:50 am

SEA

LIS

34h 35m

2 stops

5:00 am - 12:00 pm

LIS

SEA

15h 00m

1 stop

$737Lufthansa

Sun, Nov 8 - Wed, Nov 18

7:00 am - 11:00 am

SEA

LIS

20h 00m

2 stops

5:00 am - 12:00 pm

LIS

SEA

15h 00m

1 stop

$741United Airlines

Wed, Nov 11 - Thu, Nov 19

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Icelandair flights from State of Washington to Portugal

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

Icelandair

Nov 2

PDX2:45 pmPortland

14h 05m

1 stop

LIS12:50 pmLisbon Humberto Delgado

Nov 10

LIS2:00 pmLisbon Humberto Delgado

35h 00m

1 stop

PDX5:00 pmPortland

$697

Icelandair

Nov 7

PDX2:45 pmPortland

14h 05m

1 stop

LIS12:50 pmLisbon Humberto Delgado

Nov 12

LIS2:00 pmLisbon Humberto Delgado

35h 00m

1 stop

PDX5:00 pmPortland

$700

Icelandair

Oct 24

SEA3:40 pmSeattle/Tacoma Intl

14h 10m

1 stop

LIS1:50 pmLisbon Humberto Delgado

Dec 6

LIS2:00 pmLisbon Humberto Delgado

35h 00m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$739

Delta flights from State of Washington to Portugal

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

Delta

Oct 21

SEA6:45 pmSeattle/Tacoma Intl

15h 05m

1 stop

LIS5:50 pmLisbon Humberto Delgado

Dec 2

LIS11:30 amLisbon Humberto Delgado

32h 20m

1 stop

SEA11:50 amSeattle/Tacoma Intl

$745

Delta

Dec 7

PDX9:40 amPortland

21h 30m

2 stops

LIS3:10 pmLisbon Humberto Delgado

Jan 13

LIS5:00 amLisbon Humberto Delgado

14h 20m

1 stop

PDX11:20 amPortland

$772

Delta

Oct 13

SEA6:45 pmSeattle/Tacoma Intl

15h 05m

1 stop

LIS5:50 pmLisbon Humberto Delgado

Oct 23

LIS5:00 amLisbon Humberto Delgado

14h 52m

1 stop

SEA11:52 amSeattle/Tacoma Intl

$775

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 9/4

3:55 pm-10:05 pm

1 stop22h 10m

Lisbon Humberto Delgado

Sat 9/12

10:55 pm-1:45 pm

1 stop22h 50m

$611

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 10/13

5:40 am-9:20 am

2 stops19h 40m

Lisbon Humberto Delgado

Wed 10/21

6:45 am-6:32 pm

2 stops19h 47m

$696

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 11/2

2:45 pm-12:50 pm

1 stop14h 05m

Lisbon Humberto Delgado

Tue 11/10

2:00 pm-5:00 pm

1 stop35h 00m

$697

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 11/7

2:45 pm-12:50 pm

1 stop14h 05m

Lisbon Humberto Delgado

Thu 11/12

2:00 pm-5:00 pm

1 stop35h 00m

$700

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 11/2

10:00 am-9:50 am

2 stops15h 50m

Lisbon Humberto Delgado

Tue 11/10

5:00 am-8:46 pm

2 stops23h 46m

$716

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 11/4

7:45 am-11:00 am

1 stop19h 15m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-12:00 pm

1 stop15h 00m

$716

Quickest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 11/9

8:10 am-10:20 am

1 stop18h 10m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-12:00 pm

1 stop15h 00m

$733

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 11/8

3:15 pm-9:50 am

2 stops34h 35m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-12:00 pm

1 stop15h 00m

$736

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 11/8

3:15 pm-9:50 am

2 stops34h 35m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-12:00 pm

1 stop15h 00m

$737

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 11/11

7:00 am-11:00 am

2 stops20h 00m

Lisbon Humberto Delgado

Thu 11/19

5:00 am-12:00 pm

1 stop15h 00m

$741

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 $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 $831 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 $726 on momondo.

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

You could potentially save up to 36% 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 50m
Direct flights	None

The fastest flight from State of Washington to Portugal takes 13h 50m

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

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 June 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 7.0 683 reviews	Search Icelandair flights
Lufthansa	PriceFrom $482	Free Cancellation	Rating 6.8 8,086 reviews	Search Lufthansa flights
British Airways	PriceFrom $482	Free Cancellation	Rating 6.7 8,064 reviews	Search British Airways flights
KLM	PriceFrom $482	Free Cancellation	Rating 7.8 1,530 reviews	Search KLM flights
United Airlines	PriceFrom $488	Free Cancellation	Rating 7.4 9,875 reviews	Search United Airlines flights
American Airlines	PriceFrom $497	Free Cancellation	Rating 7.1 11,747 reviews	Search American Airlines flights
Air France	PriceFrom $504	Free Cancellation	Rating 7.5 1,613 reviews	Search Air France flights
Delta	PriceFrom $505	Free Cancellation	Rating 7.8 8,428 reviews	Search Delta flights
Aer Lingus	PriceFrom $535	Free Cancellation	Rating 7.3 1,620 reviews	Search Aer Lingus flights
Air Canada	PriceFrom $543	Free Cancellation	Rating 7.1 11,244 reviews	Search Air Canada 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 $501

Flights to Funchalfrom $589

Flights to Farofrom $562

Flights to Ponta Delgadafrom $563

Flights to Lajesfrom $627

Flights to Hortafrom $694

Flights to Pico Islandfrom $851

Flights to Porto Santofrom $540

Flights to Velasfrom $791

Cheap flights from Washington to Portugal from $242

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 12/1. 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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Icelandair flights from State of Washington to Portugal

Our best Icelandair 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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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 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