How long is the flight from Portugal to Seattle?

Departing from Portugal to Seattle will take you 14h 50m. There are 5083 mi between Portugal and Seattle. This flight may include one or multiple stops.

What are the cheapest airlines to fly from Portugal to Seattle one-way?

$556 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on British Airways and Turkish Airlines, with prices starting from $560 and $583, respectively.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

What are the most popular airlines that fly from Portugal to Seattle?

Consider British Airways, Delta or Air France when booking your flight. These represent the most popular airlines when flying from Portugal to Seattle.

What airport do you fly into for flights to Seattle from Portugal?

Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Seattle from Portugal.

Can I find deals for flights from Portugal to Seattle that include hotel bookings?

Yes. In addition to deals on Portugal to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Portugal to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Seattle.

Can I find deals for business class flights from Portugal to Seattle?

Yes. Cheapflights offers flight deals from Portugal to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$368+ Flights from Portugal to Seattle

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Cheap flight deals from Portugal to Seattle

Cheapest flights from Portugal to Seattle
Explore the most affordable flight options available from Portugal to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Thu 12/188:55 amLIS - SEA

1 stop21h 04mBritish Airways

Tue 12/301:25 pmSEA - LIS

1 stop17h 20mBritish Airways

Deal found 12/16

$1,006

Thu 12/188:55 amLIS - SEA

2 stops20h 15mAmerican Airlines

Tue 12/308:11 amSEA - LIS

2 stops16h 54mAmerican Airlines

Deal found 12/16

$1,042

Thu 12/1810:55 amLIS - SEA

2 stops30h 36mAir Canada

Tue 12/305:50 amSEA - LIS

2 stops19h 30mAir Canada

Deal found 12/17

$1,101

Wed 12/3112:30 pmOPO - SEA

1 stop31h 40mLufthansa

Tue 1/67:00 amSEA - OPO

2 stops23h 45mLufthansa

Deal found 12/16

$1,258

Wed 12/3112:30 pmOPO - SEA

2 stops38h 15mUnited Airlines

Tue 1/67:00 amSEA - OPO

2 stops23h 45mUnited Airlines

Deal found 12/16

$1,271

Wed 12/316:00 amOPO - SEA

3 stops24h 46mMultiple Airlines

Tue 1/65:50 amSEA - OPO

3 stops22h 20mMultiple Airlines

Deal found 12/16

$1,701

Thu 12/184:05 pmLIS - SEA

3 stops36h 54mMultiple Airlines

Tue 12/307:09 amSEA - LIS

3 stops45h 01mMultiple Airlines

Deal found 12/16

$16,289

Best flights from Portugal to Seattle
Discover carefully curated flight deals from Portugal to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Wed 3/45:55 amLIS - SEA

2 stops22h 02mMultiple Airlines

Sat 3/72:35 pmSEA - LIS

1 stop21h 45mMultiple Airlines

Deal found 12/16

$703

Wed 1/217:00 pmLIS - SEA

2 stops36h 22mScandinavian Airlines

Sat 1/2411:17 amSEA - LIS

2 stops44h 48mScandinavian Airlines

Deal found 12/16

$849

Tue 3/35:00 amLIS - SEA

1 stop15h 10mUnited Airlines

Sun 3/88:00 amSEA - LIS

1 stop19h 15mUnited Airlines

Deal found 12/16

$889

Sun 1/185:00 amOPO - SEA

1 stop14h 50mDelta

Tue 1/271:40 pmSEA - OPO

1 stop12h 50mDelta

Deal found 12/17

$891

Sun 1/186:00 amOPO - SEA

2 stops22h 57mLufthansa

Tue 1/277:00 amSEA - OPO

2 stops21h 50mLufthansa

Deal found 12/17

$895

Tue 2/244:10 pmOPO - SEA

1 stop27h 30mKLM

Sun 3/84:00 pmSEA - OPO

1 stop16h 25mKLM

Deal found 12/17

$897

Sat 1/318:50 amOPO - SEA

1 stop21h 26mMultiple Airlines

Sat 2/72:35 pmSEA - OPO

2 stops15h 35mMultiple Airlines

Deal found 12/17

$800

Sat 2/285:00 amLIS - SEA

1 stop15h 10mUnited Airlines

Tue 3/108:00 amSEA - LIS

1 stop19h 15mUnited Airlines

Deal found 12/16

$889

Wed 4/84:25 pmLIS - SEA

2 stops38h 58mScandinavian Airlines

Fri 4/2411:10 amSEA - LIS

2 stops37h 50mScandinavian Airlines

Deal found 12/17

$890

Mon 2/2311:15 amOPO - SEA

1 stop32h 25mDelta

Sun 3/87:20 amSEA - OPO

2 stops20h 10mDelta

Deal found 12/17

$891

Mon 2/2311:15 amOPO - SEA

1 stop32h 25mKLM

Sun 3/84:00 pmSEA - OPO

1 stop16h 25mKLM

Deal found 12/17

$897

Sun 3/18:35 amLIS - SEA

1 stop18h 43mMultiple Airlines

Wed 3/113:35 pmSEA - LIS

1 stop21h 45mMultiple Airlines

Deal found 12/16

$837

Mon 2/236:00 amOPO - SEA

2 stops25h 00mUnited Airlines

Sun 3/88:45 amSEA - OPO

2 stops17h 45mUnited Airlines

Deal found 12/17

$891

Sat 2/285:00 amLIS - SEA

1 stop15h 10mUnited Airlines

Sun 3/811:59 pmSEA - LIS

2 stops27h 16mUnited Airlines

Deal found 12/16

$892

Mon 2/234:10 pmOPO - SEA

1 stop27h 30mMultiple Airlines

Sun 3/83:10 pmSEA - OPO

1 stop36h 20mMultiple Airlines

Deal found 12/17

$893

Tue 4/75:05 amLIS - SEA

1 stop15h 15mUnited Airlines

Thu 4/238:00 amSEA - LIS

1 stop18h 30mUnited Airlines

Deal found 12/17

$893

Sun 1/186:00 amOPO - SEA

2 stops24h 16mMultiple Airlines

Tue 1/278:10 amSEA - OPO

2 stops30h 15mMultiple Airlines

Deal found 12/17

$901

Mon 4/65:05 amLIS - SEA

1 stop15h 15mUnited Airlines

Thu 4/238:00 amSEA - LIS

1 stop18h 30mUnited Airlines

Deal found 12/17

$893

Fri 4/105:05 amLIS - SEA

1 stop15h 15mUnited Airlines

Tue 4/215:00 amSEA - LIS

2 stops19h 20mUnited Airlines

Deal found 12/17

$893

Fri 4/105:05 amLIS - SEA

1 stop15h 15mUnited Airlines

Sat 4/186:57 amSEA - LIS

2 stops19h 38mUnited Airlines

Deal found 12/17

$893

Last-minute flights from Portugal to Seattle
Discover last-minute flight deals from Portugal to Seattle. Data last updated December 18, 2025 and is based on user searches.

Mon 1/126:15 pmLIS - SEA

2 stops52h 05mMultiple Airlines

Sat 1/172:35 pmSEA - LIS

1 stop21h 45mMultiple Airlines

Deal found 12/16

$698

Wed 1/143:30 pmLIS - SEA

3 stops33h 30mMultiple Airlines

Wed 1/282:35 pmSEA - LIS

2 stops19h 00mMultiple Airlines

Deal found 12/15

$711

Thu 1/1511:00 amLIS - SEA

1 stop16h 17mMultiple Airlines

Wed 1/283:10 pmSEA - LIS

2 stops23h 45mMultiple Airlines

Deal found 12/16

$745

Sun 1/185:00 amOPO - SEA

1 stop14h 50mDelta

Tue 1/271:40 pmSEA - OPO

1 stop12h 50mDelta

Deal found 12/17

$891

Sun 1/186:00 amOPO - SEA

2 stops22h 57mLufthansa

Tue 1/277:00 amSEA - OPO

2 stops21h 50mLufthansa

Deal found 12/17

$895

Sun 1/186:00 amOPO - SEA

2 stops24h 16mMultiple Airlines

Tue 1/278:10 amSEA - OPO

2 stops30h 15mMultiple Airlines

Deal found 12/17

$901

Thu 1/226:00 amOPO - SEA

2 stops24h 16mAir Canada

Sun 1/258:10 amSEA - OPO

2 stops19h 30mAir Canada

Deal found 12/15

$920

Thu 1/226:00 amOPO - SEA

3 stops24h 43mUnited Airlines

Sun 1/258:10 amSEA - OPO

2 stops43h 30mUnited Airlines

Deal found 12/17

$928

Fri 1/3011:20 amLIS - SEA

1 stop15h 57mMultiple Airlines

Fri 2/67:55 amSEA - LIS

1 stop17h 25mMultiple Airlines

Deal found 12/16

$767

Sat 1/318:50 amOPO - SEA

1 stop21h 26mMultiple Airlines

Sat 2/72:35 pmSEA - OPO

2 stops15h 35mMultiple Airlines

Deal found 12/17

$800

One-way flights from Portugal to Seattle
Search for one-way flight options from Portugal to Seattle. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Tue 1/132:40 pmOPO - SEA

2 stops55h 40mMultiple Airlines

Deal found 12/16

$368

Wed 1/144:45 pmOPO - SEA

3 stops49h 37mMultiple Airlines

Deal found 12/16

$371

Tue 1/137:00 pmLIS - SEA

2 stops51h 20mMultiple Airlines

Deal found 12/16

$372

Wed 1/146:55 pmLIS - SEA

3 stops47h 27mMultiple Airlines

Deal found 12/16

$373

Tue 4/285:45 pmLIS - SEA

3 stops32h 59mMultiple Airlines

Deal found 12/16

$419

Fri 1/305:20 pmLIS - SEA

2 stops52h 59mMultiple Airlines

Deal found 12/16

$422

Tue 4/286:35 pmOPO - SEA

3 stops35h 08mMultiple Airlines

Deal found 12/16

$427

Thu 4/3010:40 amLIS - SEA

2 stops41h 48mMultiple Airlines

Deal found 12/16

$458

Wed 1/74:35 pmOPO - SEA

3 stops49h 47mMultiple Airlines

Deal found 12/17

$531

Tue 4/288:40 pmOPO - SEA

1 stop22h 55mBritish Airways

Deal found 12/16

$597

Thu 12/258:50 amOPO - SEA

3 stops57h 14mMultiple Airlines

Deal found 12/17

$693

Tue 1/134:10 pmOPO - SEA

1 stop32h 55mTurkish Airlines

Deal found 12/16

$694

Find flight deals from Portugal to Seattle

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$684 (Kiwi.com)
One-way from	$368 (Kiwi.com)
Popular in	July
Cheapest in	April
Average price	$959

Provider with most accurate pricing for Lisbon Humberto Delgado-Seattle/Tacoma Intl flight deals.

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Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Seattle/Tacoma Intl flights.

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From Portugal to Seattle/Tacoma Intl

Search Deals

One-way flight from Portugal to Seattle/Tacoma Intl

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($171 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 3/4

5:55 am-7:57 pm

2 stops22h 02m

Seattle/Tacoma Intl

Sat 3/7

2:35 pm-8:20 pm

1 stop21h 45m

$703

PortoSeattle

OPO - SEA

OPOSEA

Porto

Sat 1/31

8:50 am-10:16 pm

1 stop21h 26m

Seattle/Tacoma Intl

Sat 2/7

2:35 pm-2:10 pm

2 stops15h 35m

$800

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sun 3/1

8:35 am-7:18 pm

1 stop18h 43m

Seattle/Tacoma Intl

Wed 3/11

3:35 pm-8:20 pm

1 stop21h 45m

$837

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 1/21

7:00 pm-11:22 pm

2 stops36h 22m

Seattle/Tacoma Intl

Sat 1/24

11:17 am-4:05 pm

2 stops44h 48m

$849

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 3/3

5:00 am-12:10 pm

1 stop15h 10m

Seattle/Tacoma Intl

Sun 3/8

8:00 am-10:15 am

1 stop19h 15m

$889

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 2/28

5:00 am-12:10 pm

1 stop15h 10m

Seattle/Tacoma Intl

Tue 3/10

8:00 am-10:15 am

1 stop19h 15m

$889

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 4/8

4:25 pm-11:23 pm

2 stops38h 58m

Seattle/Tacoma Intl

Fri 4/24

11:10 am-9:00 am

2 stops37h 50m

$890

PortoSeattle

OPO - SEA

OPOSEA

Porto

Sun 1/18

5:00 am-11:50 am

1 stop14h 50m

Seattle/Tacoma Intl

Tue 1/27

1:40 pm-10:30 am

1 stop12h 50m

$891

PortoSeattle

OPO - SEA

OPOSEA

Porto

Mon 2/23

11:15 am-11:40 am

1 stop32h 25m

Seattle/Tacoma Intl

Sun 3/8

7:20 am-10:30 am

2 stops20h 10m

$891

PortoSeattle

OPO - SEA

OPOSEA

Porto

Mon 2/23

6:00 am-11:00 pm

2 stops25h 00m

Seattle/Tacoma Intl

Sun 3/8

8:45 am-9:30 am

2 stops17h 45m

$891

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 36 results

Best time to book a flight from Portugal to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Portugal with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portugal to Seattle

What is the cheapest month to book a flight from Portugal to Seattle?

Currently, April is the cheapest month in which you can book a flight from Portugal to Seattle (average of $693). Flying from Portugal to Seattle in July is currently the most expensive (average of $970). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PT to SEA?

Unlike at noon, when flights are generally more expensive, you can save up to 27% on flights from Portugal to Seattle by exploring options for tickets in the evening.

How often are flights from Portugal to Seattle delayed?

About 50% of weekly flights between Portugal and Seattle have experienced delays in the past year, with the average delay time being 108 minutes.

What is the most punctual flight time for Portugal to Seattle flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

Reviews of airlines servicing Seattle

Read reviews from past customers who have flown Delta, Air France, and United Airlines from Portugal to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

8,007 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Delta

7.9

Good

8,007 reviews

Delta

7.9

Good

8,007 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Air France

7.4

Good

1,508 reviews

Delta

7.9

Good

8,007 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,091 reviews

Delta

7.9

Good

8,007 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

British Airways

6.7

Okay

7,585 reviews

Delta

7.9

Good

8,007 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Related info for your journey

What airport do you fly into for flights to Seattle from Portugal?
Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Seattle from Portugal.
How long is the flight from Portugal to Seattle?
Departing from Portugal to Seattle will take you 14h 50m. There are 5083 mi between Portugal and Seattle. This flight may include one or multiple stops.
What are the cheapest airlines to fly from Portugal to Seattle one-way?
$556 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on British Airways and Turkish Airlines, with prices starting from $560 and $583, respectively.
Can I find deals for flights from Portugal to Seattle that include hotel bookings?
Yes. In addition to deals on Portugal to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portugal to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Seattle.
Can I find deals for business class flights from Portugal to Seattle?
Yes. Cheapflights offers flight deals from Portugal to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Portugal to Seattle?
Currently, April is the cheapest month in which you can book a flight from Portugal to Seattle (average of $693). Flying from Portugal to Seattle in July is currently the most expensive (average of $970). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Tacoma

SeaTac

Lakewood

Ocean Shores

Olympia

Edmonds

Lynnwood

Renton

Puyallup

Kirkland

Kent

Tukwila

Cle Elum

Marysville

Leavenworth

Fife

Aberdeen

Shoreline

Centralia

Federal Way

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from Portugal to Seattle

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest$720	Average$902	FlexibilityNo cancel fee	On-time70%
United Airlines	Cheapest$738	Average$1,236	FlexibilityNo cancel fee	On-time69%
Air France	Cheapest$762	Average$1,159	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$775	Average$1,077	FlexibilityNo cancel fee	On-timeN/A

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$368+ Cheap flights from Portugal to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portugal to Seattle with Cheapflights

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Cheap flight deals from Portugal to Seattle

Cheapest flights from Portugal to SeattleExplore the most affordable flight options available from Portugal to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Explore the most affordable flight options available from Portugal to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Find flight deals from Portugal to Seattle

Keep the following information in mind while searching for Portugal to Seattle flight deals. Data was last updated December 18, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

Best time to book a flight from Portugal to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Portugal with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Portugal to Seattle

What is the cheapest month to book a flight from Portugal to Seattle?

What is the cheapest time of day to fly from PT to SEA?

Find hourly flight availability from Portugal to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

How often are flights from Portugal to Seattle delayed?

What is the most punctual flight time for Portugal to Seattle flights?

What day of the week experiences the fewest flight delays on this route?

Reviews of airlines servicing Seattle

Read reviews from past customers who have flown Delta, Air France, and United Airlines from Portugal to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Portugal to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Seattle from Portugal?

How long is the flight from Portugal to Seattle?

What are the cheapest airlines to fly from Portugal to Seattle one-way?

Can I find deals for flights from Portugal to Seattle that include hotel bookings?

How can I find direct flights from Portugal to Seattle?

Can I find deals for business class flights from Portugal to Seattle?

What is the cheapest month to book a flight from Portugal to Seattle?

Traveling to a place near Seattle?

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Alternative routes for Portugal to Seattle

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Top 4 airlines flying from Portugal to Seattle

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Cheapest flights from Portugal to Seattle
Explore the most affordable flight options available from Portugal to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.