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

British Airways, Air France, 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 10m on average, while flying from Pasco to Lisbon is 20h 55m on average. Lisbon is the most popular airport in Portugal.

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 40% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 12 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

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 September 2026, there are 12 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.

$287 Cheap Flights from Washington to Portugal in 2026/27

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.

7:20 pm - 8:00 amGEG Spokane-LIS Lisbon Humberto Delgado

28h 40m2 stops Seattle/Tacoma Intl New York John F Kennedy Intl

10:00 am - 11:42 pmLIS Lisbon Humberto Delgado-GEG Spokane

21h 42m2 stops New York John F Kennedy Intl Seattle/Tacoma Intl

$596Delta

Mon, Jan 18 - Tue, Feb 9

7:20 pm - 8:00 amGEG Spokane-LIS Lisbon Humberto Delgado

28h 40m2 stops Seattle/Tacoma Intl New York John F Kennedy Intl

10:00 am - 11:42 pmLIS Lisbon Humberto Delgado-GEG Spokane

21h 42m2 stops New York John F Kennedy Intl Seattle/Tacoma Intl

$596Delta

Tue, Jan 19 - Thu, Feb 4

10:43 am - 4:50 pmSEA Seattle/Tacoma Intl-OPO Porto

22h 07m2 stops Chicago O'Hare Intl London Heathrow

8:20 am - 12:32 amOPO Porto-SEA Seattle/Tacoma Intl

24h 12m2 stops Madrid Barajas Chicago O'Hare Intl

$603British Airways

Wed, Nov 11 - Thu, Dec 3

6:00 am - 9:30 amSEA Seattle/Tacoma Intl-OPO Porto

19h 30m2 stops Los Angeles Newark

12:35 pm - 10:27 pmOPO Porto-SEA Seattle/Tacoma Intl

17h 52m1 stop Newark

$609United Airlines

Wed, Nov 11 - Thu, Dec 3

6:30 am - 9:30 amSEA Seattle/Tacoma Intl-OPO Porto

19h 00m1 stop Newark

12:35 pm - 1:01 pmOPO Porto-SEA Seattle/Tacoma Intl

32h 26m1 stop Newark

$612United Airlines

Wed, Nov 11 - Thu, Dec 3

6:45 pm - 8:00 pmSEA Seattle/Tacoma Intl-OPO Porto

17h 15m2 stops London Heathrow Madrid Barajas

8:40 pm - 10:35 pmOPO Porto-SEA Seattle/Tacoma Intl

33h 55m2 stops Madrid Barajas Dallas/Fort Worth

$614Multiple Airlines

Mon, Jan 11 - Mon, Jan 25

7:45 pm - 9:50 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

19h 05m1 stop London Heathrow

11:05 am - 9:57 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

17h 52m1 stop Philadelphia

$615American Airlines

Tue, Mar 16 - Tue, Mar 23

9:15 am - 9:05 amSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

15h 50m1 stop Philadelphia

11:05 am - 9:59 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

18h 54m1 stop Philadelphia

$615American Airlines

Tue, Nov 10 - Tue, Nov 17

6:45 pm - 5:45 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

15h 00m1 stop London Heathrow

11:05 am - 9:05 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

18h 00m1 stop Philadelphia

$615Multiple Airlines

Wed, Jan 13 - Wed, Feb 17

6:45 pm - 3:25 pmSEA Seattle/Tacoma Intl-FNC Funchal Madeira

36h 40m1 stop London Heathrow

12:30 pm - 11:25 amFNC Funchal Madeira-SEA Seattle/Tacoma Intl

30h 55m1 stop London Gatwick

$798British Airways

Mon, Nov 2 - Mon, Nov 16

Cheap last minute flights

Enter your travel dates to find the best prices.

8:20 pm - 11:15 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

18h 55m1 stop London Heathrow

6:45 pm - 11:35 amLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

24h 50m1 stop London Heathrow

$703British Airways

Wed, Sep 30 - Tue, Oct 13

8:20 pm - 11:15 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

18h 55m1 stop London Heathrow

7:10 am - 8:15 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

21h 05m2 stops London Heathrow Chicago O'Hare Intl

$722British Airways

Wed, Sep 30 - Tue, Oct 13

7:15 am - 10:55 amSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

19h 40m2 stops Chicago O'Hare Intl Amsterdam Schiphol

5:35 am - 11:20 amLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

13h 45m1 stop Paris Charles de Gaulle

$856Delta

Wed, Sep 30 - Tue, Oct 13

7:15 am - 10:55 amSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

19h 40m2 stops Chicago O'Hare Intl Amsterdam Schiphol

5:00 am - 11:52 amLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

14h 52m1 stop Amsterdam Schiphol

$856Delta

Wed, Sep 30 - Tue, Oct 13

3:40 pm - 1:05 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

13h 25m1 stop Reykjavik Keflavik Intl

3:00 pm - 8:40 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

13h 40m1 stop Reykjavik Keflavik Intl

$896Icelandair

Sat, Sep 26 - Tue, Oct 20

6:50 pm - 10:45 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

19h 55m1 stop Munich Franz Josef Strauss

2:30 pm - 4:59 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

34h 29m1 stop Munich Franz Josef Strauss

$923Lufthansa

Fri, Sep 25 - Mon, Oct 5

11:13 pm - 9:45 amSEA Seattle/Tacoma Intl-OPO Porto

26h 32m2 stops Chicago O'Hare Intl Newark

12:10 pm - 12:20 pmOPO Porto-SEA Seattle/Tacoma Intl

32h 10m1 stop Frankfurt am Main

$927United Airlines

Mon, Sep 28 - Mon, Oct 5

11:59 pm - 9:45 amSEA Seattle/Tacoma Intl-OPO Porto

25h 46m2 stops Houston George Bush Intcntl Newark

12:10 pm - 12:20 pmOPO Porto-SEA Seattle/Tacoma Intl

32h 10m1 stop Frankfurt am Main

$927United Airlines

Mon, Sep 28 - Mon, Oct 5

6:50 pm - 10:45 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

19h 55m1 stop Munich Franz Josef Strauss

6:15 am - 4:59 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

18h 44m1 stop Munich Franz Josef Strauss

$947Lufthansa

Wed, Sep 30 - Tue, Oct 13

12:30 pm - 1:05 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

16h 35m2 stops Portland Reykjavik Keflavik Intl

3:00 pm - 8:40 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

13h 40m1 stop Reykjavik Keflavik Intl

$1,057Icelandair

Sat, Sep 26 - Tue, Oct 20

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Air France flights from State of Washington to Portugal

Our best Air France deals on State of Washington to Portugal flight tickets

Air France

Jan 13

SEA6:00 amSeattle/Tacoma Intl

18h 00m

2 stops

LIS8:00 amLisbon Humberto Delgado

Feb 16

LIS10:00 amLisbon Humberto Delgado

17h 23m

1 stop

SEA7:23 pmSeattle/Tacoma Intl

$625

Air France

Jan 20

SEA6:00 amSeattle/Tacoma Intl

18h 00m

2 stops

LIS8:00 amLisbon Humberto Delgado

Feb 24

LIS5:30 amLisbon Humberto Delgado

19h 05m

2 stops

SEA4:35 pmSeattle/Tacoma Intl

$636

Air France

Nov 16

SEA7:38 amSeattle/Tacoma Intl

18h 57m

2 stops

OPO10:35 amPorto

Jan 12

OPO5:55 amPorto

15h 55m

1 stop

SEA1:50 pmSeattle/Tacoma Intl

$648

Lufthansa flights from State of Washington to Portugal

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

Lufthansa

Feb 5

SEA2:50 pmSeattle/Tacoma Intl

24h 50m

1 stop

OPO11:40 pmPorto

Feb 12

OPO6:15 amPorto

14h 45m

1 stop

SEA1:00 pmSeattle/Tacoma Intl

$672

Lufthansa

Mar 17

GEG12:30 pmSpokane

28h 25m

2 stops

OPO11:55 pmPorto

Mar 22

OPO1:45 pmPorto

38h 24m

2 stops

GEG9:09 pmSpokane

$731

Lufthansa

Mar 5

GEG4:00 pmSpokane

32h 10m

2 stops

LIS8:10 amLisbon Humberto Delgado

Mar 19

LIS10:55 amLisbon Humberto Delgado

32h 45m

2 stops

GEG12:40 pmSpokane

$764

momondo Fare Finder

Use the filters below to find and compare flights from Washington to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SpokaneLisbon

GEG Spokane - LIS Lisbon Humberto Delgado

GEGLIS

Spokane

Mon 1/18

7:20 pm-8:00 am

2 stops28h 40m

Lisbon Humberto Delgado

Tue 2/9

10:00 am-11:42 pm

2 stops21h 42m

$596

SpokaneLisbon

GEG Spokane - LIS Lisbon Humberto Delgado

GEGLIS

Spokane

Tue 1/19

7:20 pm-8:00 am

2 stops28h 40m

Lisbon Humberto Delgado

Thu 2/4

10:00 am-11:42 pm

2 stops21h 42m

$596

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Wed 11/11

10:43 am-4:50 pm

2 stops22h 07m

Porto

Thu 12/3

8:20 am-12:32 am

2 stops24h 12m

$603

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Wed 11/11

6:00 am-9:30 am

2 stops19h 30m

Porto

Thu 12/3

12:35 pm-10:27 pm

1 stop17h 52m

$609

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Wed 11/11

6:30 am-9:30 am

1 stop19h 00m

Porto

Thu 12/3

12:35 pm-1:01 pm

1 stop32h 26m

$612

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Mon 1/11

6:45 pm-8:00 pm

2 stops17h 15m

Porto

Mon 1/25

8:40 pm-10:35 pm

2 stops33h 55m

$614

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 3/16

7:45 pm-9:50 pm

1 stop19h 05m

Lisbon Humberto Delgado

Tue 3/23

11:05 am-9:57 pm

1 stop17h 52m

$615

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 11/10

9:15 am-9:05 am

1 stop15h 50m

Lisbon Humberto Delgado

Tue 11/17

11:05 am-9:59 pm

1 stop18h 54m

$615

Quickest round-trip

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Wed 1/13

6:45 pm-5:45 pm

1 stop15h 00m

Lisbon Humberto Delgado

Wed 2/17

11:05 am-9:05 pm

1 stop18h 00m

$615

SeattleFunchal

SEA Seattle/Tacoma Intl - FNC Funchal Madeira

SEAFNC

Seattle/Tacoma Intl

Mon 11/2

6:45 pm-3:25 pm

1 stop36h 40m

Funchal Madeira

Mon 11/16

12:30 pm-11:25 am

1 stop30h 55m

$798

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 $482, 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 $586.

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 $855 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 $787 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

Best Price Found	$287
Fastest flight time	13h 10m
Direct flights	None

The best one-way flight to Portugal from State of Washington in the past 72 hours is $287. The best round-trip flight deal from State of Washington to Portugal found on momondo in the last 72 hours is $596.

The fastest flight from State of Washington to Portugal takes 13h 10m

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 September 2026, there are 12 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 $345	Free Cancellation	Rating 6.9 751 reviews	Search Icelandair flights
Lufthansa	PriceFrom $471	Free Cancellation	Rating 6.8 8,235 reviews	Search Lufthansa flights
KLM	PriceFrom $481	Free Cancellation	Rating 7.8 1,576 reviews	Search KLM flights
British Airways	PriceFrom $482	Free Cancellation	Rating 6.7 8,227 reviews	Search British Airways flights
United Airlines	PriceFrom $482	Free Cancellation	Rating 7.4 10,234 reviews	Search United Airlines flights
American Airlines	PriceFrom $497	Free Cancellation	Rating 7.0 12,077 reviews	Search American Airlines flights
Air France	PriceFrom $504	Free Cancellation	Rating 7.5 1,651 reviews	Search Air France flights
Delta	PriceFrom $505	Free Cancellation	Rating 7.8 8,598 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $567	Free Cancellation	Rating 7.4 1,991 reviews	Search Scandinavian Airlines flights
Air Canada	PriceFrom $660	Free Cancellation	Rating 7.1 11,680 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.

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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 10/24

Sat 10/31

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Popular cities

Other flights from Washington

Other flights to Portugal

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $454

Flights to Portofrom $470

Flights to Funchalfrom $485

Flights to Farofrom $463

Flights to Ponta Delgadafrom $438

Flights to Lajesfrom $566

Flights to Hortafrom $591

Flights to Pico Islandfrom $592

Flights to Porto Santofrom $878

Flights to Velasfrom $590

Cheap flights from Washington to Portugal from $287

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.

Find the cheapest flights from Washington to Portugal

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Air France flights from State of Washington to Portugal

Our best Air France deals on State of Washington to Portugal flight tickets

Lufthansa flights from State of Washington to Portugal

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

momondo Fare Finder

Use the filters below to find and compare flights from Washington to Portugal that are best for you.

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

Best Price Found

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