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 15m on average, while flying from Pasco to Lisbon is 17h 45m 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 44% 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.

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

Icelandair, Delta, and United Airlines are the most popular carriers operating 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 November 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.

$300 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.

2:35 pm - 12:45 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

14h 10m1 stop Reykjavik Keflavik Intl

1:55 pm - 5:00 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

35h 05m1 stop Reykjavik Keflavik Intl

$587Icelandair

Mon, Nov 23 - Tue, Dec 8

2:35 pm - 12:50 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

14h 15m1 stop Reykjavik Keflavik Intl

11:35 am - 5:00 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

13h 25m1 stop Reykjavik Keflavik Intl

$589Icelandair

Wed, Feb 3 - Tue, Feb 9

7:45 am - 3:55 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

24h 10m2 stops Toronto Pearson Intl Kastrup Copenhagen

6:55 pm - 8:59 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

34h 04m2 stops Kastrup Copenhagen Toronto Pearson Intl

$705Multiple Airlines

Thu, Dec 3 - Thu, Dec 10

2:50 pm - 11:30 pmSEA Seattle/Tacoma Intl-OPO Porto

24h 40m1 stop Munich Franz Josef Strauss

6:00 am - 9:58 pmOPO Porto-SEA Seattle/Tacoma Intl

23h 58m2 stops Frankfurt am Main Vancouver Intl

$706Multiple Airlines

Wed, Feb 10 - Wed, Mar 31

7:02 am - 11:25 pmGEG Spokane-OPO Porto

32h 23m2 stops San Francisco Munich Franz Josef Strauss

6:00 am - 9:09 pmOPO Porto-GEG Spokane

23h 09m2 stops Frankfurt am Main Denver Intl

$708Lufthansa

Wed, Apr 7 - Wed, Apr 28

2:10 pm - 11:00 pmSEA Seattle/Tacoma Intl-OPO Porto

24h 50m1 stop Frankfurt am Main

6:00 am - 12:20 pmOPO Porto-SEA Seattle/Tacoma Intl

14h 20m1 stop Frankfurt am Main

$715Lufthansa

Mon, Apr 12 - Fri, Apr 30

4:05 pm - 10:00 pmSEA Seattle/Tacoma Intl-OPO Porto

21h 55m1 stop Paris Charles de Gaulle

5:00 am - 12:35 pmOPO Porto-SEA Seattle/Tacoma Intl

14h 35m1 stop Amsterdam Schiphol

$722KLM

Tue, Mar 9 - Tue, Mar 16

3:30 pm - 10:00 pmSEA Seattle/Tacoma Intl-OPO Porto

22h 30m1 stop Paris Charles de Gaulle

5:00 am - 11:50 amOPO Porto-SEA Seattle/Tacoma Intl

14h 50m1 stop Amsterdam Schiphol

$722Delta

Mon, Feb 15 - Wed, Feb 24

4:05 pm - 10:00 pmSEA Seattle/Tacoma Intl-OPO Porto

21h 55m1 stop Paris Charles de Gaulle

5:00 am - 11:50 amOPO Porto-SEA Seattle/Tacoma Intl

14h 50m1 stop Amsterdam Schiphol

$722Delta

Tue, Feb 16 - Tue, Feb 23

2:20 pm - 7:55 pmSEA Seattle/Tacoma Intl-OPO Porto

21h 35m1 stop Amsterdam Schiphol

5:00 am - 11:50 amOPO Porto-SEA Seattle/Tacoma Intl

14h 50m1 stop Amsterdam Schiphol

$826KLM

Sat, Feb 13 - Sat, Feb 20

Cheap last minute flights

Enter your travel dates to find the best prices.

2:50 pm - 1:30 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

14h 40m1 stop Munich Franz Josef Strauss

5:00 am - 12:00 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

15h 00m1 stop Frankfurt am Main

$806Lufthansa

Wed, Nov 11 - Wed, Nov 18

3:25 pm - 5:30 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

18h 05m1 stop Paris Charles de Gaulle

5:00 am - 11:47 amLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

14h 47m1 stop Amsterdam Schiphol

$837Delta

Wed, Nov 11 - Tue, Nov 17

7:00 am - 8:10 amSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

17h 10m2 stops Chicago O'Hare Intl Newark

5:00 am - 12:00 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

15h 00m1 stop Frankfurt am Main

$837United Airlines

Wed, Nov 11 - Wed, Nov 18

4:05 pm - 3:10 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

15h 05m1 stop Paris Charles de Gaulle

5:00 am - 11:47 amLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

14h 47m1 stop Amsterdam Schiphol

$837Delta

Tue, Nov 10 - Fri, Nov 20

5:05 am - 8:10 amSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

19h 05m2 stops Denver Intl Newark

5:00 am - 12:00 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

15h 00m1 stop Frankfurt am Main

$841United Airlines

Wed, Nov 11 - Thu, Nov 19

10:50 am - 2:35 pmSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

19h 45m2 stops Chicago O'Hare Intl Zurich

3:35 pm - 11:07 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

39h 32m2 stops Zurich Chicago O'Hare Intl

$841SWISS

Tue, Nov 10 - Tue, Nov 17

2:50 pm - 12:50 pmSEA Seattle/Tacoma Intl-OPO Porto

14h 00m1 stop Munich Franz Josef Strauss

6:15 am - 1:00 pmOPO Porto-SEA Seattle/Tacoma Intl

14h 45m1 stop Munich Franz Josef Strauss

$844Lufthansa

Fri, Nov 13 - Fri, Nov 20

10:50 am - 11:15 amSEA Seattle/Tacoma Intl-OPO Porto

40h 25m2 stops Chicago O'Hare Intl Zurich

6:15 am - 1:00 pmOPO Porto-SEA Seattle/Tacoma Intl

14h 45m1 stop Munich Franz Josef Strauss

$869Multiple Airlines

Fri, Nov 13 - Fri, Nov 20

7:45 am - 9:20 amSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

17h 35m1 stop Toronto Pearson Intl

8:55 am - 9:57 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

21h 02m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl

$878Air Canada

Thu, Nov 12 - Thu, Nov 19

10:10 am - 11:35 amSEA Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado

17h 25m2 stops Vancouver Intl Frankfurt am Main

6:05 am - 6:22 pmLIS Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl

20h 17m2 stops Munich Franz Josef Strauss Vancouver Intl

$886Air Canada

Thu, Nov 12 - Thu, Nov 19

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Delta flights from State of Washington to Portugal

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

Delta

Feb 14

SEA3:30 pmSeattle/Tacoma Intl

22h 25m

1 stop

OPO9:55 pmPorto

Feb 24

OPO11:15 amPorto

32h 35m

1 stop

SEA11:50 amSeattle/Tacoma Intl

$722

Delta

Mar 9

GEG6:20 amSpokane

24h 50m

2 stops

LIS3:10 pmLisbon Humberto Delgado

Mar 26

LIS5:00 amLisbon Humberto Delgado

18h 49m

2 stops

GEG4:49 pmSpokane

$734

Delta

Feb 14

SEA3:30 pmSeattle/Tacoma Intl

22h 25m

1 stop

OPO9:55 pmPorto

Feb 22

OPO11:30 amPorto

34h 20m

1 stop

SEA1:50 pmSeattle/Tacoma Intl

$742

Icelandair flights from State of Washington to Portugal

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

Icelandair

Nov 23

SEA2:35 pmSeattle/Tacoma Intl

14h 10m

1 stop

LIS12:45 pmLisbon Humberto Delgado

Dec 8

LIS1:55 pmLisbon Humberto Delgado

35h 05m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$587

Icelandair

Feb 3

SEA2:35 pmSeattle/Tacoma Intl

14h 15m

1 stop

LIS12:50 pmLisbon Humberto Delgado

Feb 9

LIS11:35 amLisbon Humberto Delgado

13h 25m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$589

Icelandair

Feb 3

SEA2:35 pmSeattle/Tacoma Intl

14h 15m

1 stop

LIS12:50 pmLisbon Humberto Delgado

Feb 9

LIS11:35 amLisbon Humberto Delgado

13h 25m

1 stop

SEA5:00 pmSeattle/Tacoma Intl

$590

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

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 11/23

2:35 pm-12:45 pm

1 stop14h 10m

Lisbon Humberto Delgado

Tue 12/8

1:55 pm-5:00 pm

1 stop35h 05m

$587

Quickest round-trip

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Wed 2/3

2:35 pm-12:50 pm

1 stop14h 15m

Lisbon Humberto Delgado

Tue 2/9

11:35 am-5:00 pm

1 stop13h 25m

$589

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Thu 12/3

7:45 am-3:55 pm

2 stops24h 10m

Lisbon Humberto Delgado

Thu 12/10

6:55 pm-8:59 pm

2 stops34h 04m

$705

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Wed 2/10

2:50 pm-11:30 pm

1 stop24h 40m

Porto

Wed 3/31

6:00 am-9:58 pm

2 stops23h 58m

$706

SpokanePorto

GEG Spokane - OPO Porto

GEGOPO

Spokane

Wed 4/7

7:02 am-11:25 pm

2 stops32h 23m

Porto

Wed 4/28

6:00 am-9:09 pm

2 stops23h 09m

$708

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Mon 4/12

2:10 pm-11:00 pm

1 stop24h 50m

Porto

Fri 4/30

6:00 am-12:20 pm

1 stop14h 20m

$715

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Tue 3/9

4:05 pm-10:00 pm

1 stop21h 55m

Porto

Tue 3/16

5:00 am-12:35 pm

1 stop14h 35m

$722

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Mon 2/15

3:30 pm-10:00 pm

1 stop22h 30m

Porto

Wed 2/24

5:00 am-11:50 am

1 stop14h 50m

$722

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Tue 2/16

4:05 pm-10:00 pm

1 stop21h 55m

Porto

Tue 2/23

5:00 am-11:50 am

1 stop14h 50m

$722

SeattlePorto

SEA Seattle/Tacoma Intl - OPO Porto

SEAOPO

Seattle/Tacoma Intl

Sat 2/13

2:20 pm-7:55 pm

1 stop21h 35m

Porto

Sat 2/20

5:00 am-11:50 am

1 stop14h 50m

$826

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 $562, 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 $607.

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 $898 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 $826 on momondo.

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

You could potentially save up to 81% 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	$300
Fastest flight time	14h 00m
Direct flights	None

The best one-way flight to Portugal from State of Washington in the past 72 hours is $300. The best round-trip flight deal from State of Washington to Portugal found on momondo in the last 72 hours is $587.

The fastest flight from State of Washington to Portugal takes 14h 00m

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 November 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 $383	Free Cancellation	Rating 6.9 767 reviews	Search Icelandair flights
KLM	PriceFrom $481	Free Cancellation	Rating 7.8 1,595 reviews	Search KLM flights
Lufthansa	PriceFrom $482	Free Cancellation	Rating 6.8 8,291 reviews	Search Lufthansa flights
British Airways	PriceFrom $482	Free Cancellation	Rating 6.7 8,287 reviews	Search British Airways flights
United Airlines	PriceFrom $482	Free Cancellation	Rating 7.3 10,479 reviews	Search United Airlines flights
Air France	PriceFrom $504	Free Cancellation	Rating 7.5 1,647 reviews	Search Air France flights
Delta	PriceFrom $505	Free Cancellation	Rating 7.8 8,699 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $567	Free Cancellation	Rating 7.5 2,028 reviews	Search Scandinavian Airlines flights
American Airlines	PriceFrom $649	Free Cancellation	Rating 7.0 12,227 reviews	Search American Airlines flights
Air Canada	PriceFrom $660	Free Cancellation	Rating 7.1 11,880 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

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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 $358

Flights to Portofrom $399

Flights to Funchalfrom $594

Flights to Farofrom $577

Flights to Ponta Delgadafrom $401

Flights to Lajesfrom $312

Flights to Hortafrom $585

Flights to Pico Islandfrom $585

Flights to Porto Santofrom $931

Flights to Velasfrom $588

Cheap flights from Washington to Portugal from $300

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 12/8. 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

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Delta flights from State of Washington to Portugal

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

Icelandair flights from State of Washington to Portugal

Our best Icelandair 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