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$650+ 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 2/13. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
dic. 23 — dic. 301
lun. 12/23
lun. 12/30
1 adult, Economy
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Cheap flight deals from Portugal to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Portugal (PT0) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated diciembre 18, 2024.

Round-trip from

$742
(Mytrip)

One-way from

$650
(Cheapflightsfares)
From Portugal to Seattle/Tacoma Intl
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One-way flight from Portugal to Seattle/Tacoma Intl
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Find 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 diciembre 18, 2024.

This Delta deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/275:30 amLIS - SEA
1 stop14h 39mDelta
jue. 1/99:55 amSEA - LIS
2 stops21h 15mDelta
Deal found 12/17$785
This American Airlines deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/276:30 amLIS - SEA
2 stops25h 01mAmerican Airlines
jue. 1/91:35 pmSEA - LIS
2 stops24h 20mAmerican Airlines
Deal found 12/18$874
This United Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/2711:00 amLIS - SEA
1 stop18h 20mUnited Airlines
jue. 1/97:00 amSEA - LIS
2 stops17h 10mUnited Airlines
Deal found 12/17$881
This Lufthansa deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/276:10 amLIS - SEA
1 stop15h 10mLufthansa
jue. 1/911:05 amSEA - LIS
2 stops18h 15mLufthansa
Deal found 12/17$1,007
This KLM deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/288:05 pmOPO - SEA
1 stop23h 47mKLM
dom. 1/52:14 pmSEA - OPO
1 stop24h 06mKLM
Deal found 12/18$1,016
This British Airways deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/2710:45 amLIS - SEA
2 stops20h 46mBritish Airways
jue. 1/96:50 pmSEA - LIS
1 stop15h 10mBritish Airways
Deal found 12/17$1,087
This United Airlines deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/286:00 amOPO - SEA
2 stops47h 20mUnited Airlines
dom. 1/53:10 pmSEA - OPO
2 stops40h 15mUnited Airlines
Deal found 12/18$1,098
This Scandinavian Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/276:55 amLIS - SEA
2 stops22h 56mMultiple Airlines
jue. 1/97:25 amSEA - LIS
2 stops24h 10mMultiple Airlines
Deal found 12/17$1,250
This Scandinavian Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/276:55 amLIS - SEA
2 stops22h 56mScandinavian Airlines
jue. 1/97:30 amSEA - LIS
2 stops24h 05mScandinavian Airlines
Deal found 12/17$1,281
This Mytrip deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/286:55 amOPO - SEA
3 stops33h 10mMultiple Airlines
dom. 1/53:10 pmSEA - OPO
3 stops20h 25mMultiple Airlines
Deal found 12/18$1,431
This Turkish Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/274:00 pmLIS - SEA
2 stops31h 19mTurkish Airlines
jue. 1/97:00 pmSEA - LIS
1 stop31h 35mTurkish Airlines
Deal found 12/17$1,585
This Icelandair deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/276:55 amLIS - SEA
2 stops42h 05mIcelandair
jue. 1/92:35 pmSEA - LIS
2 stops15h 25mIcelandair
Deal found 12/17$2,350

Find flights from Portugal to Seattle within your budget

Customize your flight search to find flights from Portugal to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

PortoSeattle

OPO - SEA

OPOSEA

Porto

dom. 2/9

2:50 pm-2:21 pm

3 stops31h 31m

Seattle/Tacoma Intl

lun. 2/17

2:35 pm-7:15 pm

2 stops20h 40m

$742

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

jue. 1/23

11:00 am-9:30 pm

1 stop18h 30m

Seattle/Tacoma Intl

dom. 1/26

2:35 pm-8:25 pm

2 stops21h 50m

$774

PortoSeattle

OPO - SEA

OPOSEA

Porto

jue. 1/16

6:00 am-9:30 pm

2 stops47h 30m

Seattle/Tacoma Intl

jue. 1/23

2:00 pm-3:10 pm

1 stop17h 10m

$777

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

jue. 1/23

5:00 am-9:30 pm

2 stops24h 30m

Seattle/Tacoma Intl

dom. 1/26

7:00 am-8:10 am

2 stops17h 10m

$778

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

lun. 3/3

5:00 am-6:25 pm

2 stops21h 25m

Seattle/Tacoma Intl

lun. 3/24

7:05 pm-9:20 am

2 stops31h 15m

$786

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

mar. 3/11

5:00 am-12:40 pm

1 stop14h 40m

Seattle/Tacoma Intl

mié. 4/2

7:20 am-11:15 am

2 stops19h 55m

$788

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

mié. 4/2

5:40 am-11:15 am

1 stop13h 35m

Seattle/Tacoma Intl

mié. 4/23

6:40 pm-5:55 pm

1 stop15h 15m

$792

PortoSeattle

OPO - SEA

OPOSEA

Porto

vie. 4/18

6:15 am-4:59 pm

1 stop18h 44m

Seattle/Tacoma Intl

vie. 4/25

6:50 pm-11:20 pm

1 stop20h 30m

$795

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

lun. 6/2

6:45 pm-11:10 am

1 stop24h 25m

Seattle/Tacoma Intl

lun. 6/16

8:20 pm-5:55 pm

1 stop13h 35m

$800

PortoSeattle

OPO - SEA

OPOSEA

Porto

lun. 1/13

11:15 am-11:51 am

1 stop32h 36m

Seattle/Tacoma Intl

dom. 1/19

12:30 pm-10:55 am

1 stop14h 25m

$801

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 21 results
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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.

Travel insights for flights from Portugal to Seattle

Get recent, data-driven insights about flights from Portugal to Seattle including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Portugal to Seattle (average of $238). Flying from Portugal to Seattle in July is currently the most expensive (average of $411). 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?

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 diciembre 18, 2024.

When flying from Portugal to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

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.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated diciembre 18, 2024.
See what other customers who have flown with United Airlines, Air Canada and Delta from Portugal to Seattle have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,604 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,349 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.7
Good
1,285 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.6
Good
1,606 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Cathay Pacific
7.5
Good
841 reviews
Delta
8.0
Very good
8,604 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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?

    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.

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

    $650 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on United Airlines and Cathay Pacific, with prices starting from $894 and $9,909, 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, January is the cheapest month in which you can book a flight from Portugal to Seattle (average of $238). Flying from Portugal to Seattle in July is currently the most expensive (average of $411). 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

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Top 7 airlines flying from Portugal to Seattle

Discover the top 7 airlines that operate flights from Portugal to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$560Average$718FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$715Average$873FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$745Average$887FlexibilityNo cancel feeOn-time70%
DeltaCheapest$756Average$859FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$774Average$855FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$795Average$974FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$816Average$873FlexibilityNo cancel feeOn-time71%
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