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$639+ 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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
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 November 21, 2024.

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 November 21, 2024.

This Delta deal was found by Cheapflights users on 11/21. 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.
Wed 11/275:00 amLIS - SEA
1 stop14h 40mDelta
Wed 12/49:30 amSEA - LIS
2 stops17h 50mDelta
Deal found 11/21$809
This United Airlines deal was found by Cheapflights users on 11/21. 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.
Wed 11/2710:15 amLIS - SEA
2 stops18h 05mUnited Airlines
Wed 12/46:25 amSEA - LIS
3 stops19h 50mUnited Airlines
Deal found 11/21$959
This Mytrip deal was found by Cheapflights users on 11/21. 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.
Wed 11/271:55 pmLIS - SEA
3 stops32h 55mMultiple Airlines
Wed 12/45:45 amSEA - LIS
3 stops33h 15mMultiple Airlines
Deal found 11/21$1,033
This Expedia deal was found by Cheapflights users on 11/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/256:10 amOPO - SEA
2 stops36h 24mMultiple Airlines
Tue 11/262:42 pmSEA - OPO
2 stops37h 08mMultiple Airlines
Deal found 11/21$1,314
This United Airlines deal was found by Cheapflights users on 11/21. 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.
Mon 11/258:30 amOPO - SEA
2 stops19h 50mUnited Airlines
Tue 11/2612:55 pmSEA - OPO
3 stops38h 45mUnited Airlines
Deal found 11/21$1,486
This KLM deal was found by Cheapflights users on 11/21. 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.
Mon 11/2511:15 amOPO - SEA
1 stop32h 25mKLM
Tue 11/262:05 pmSEA - OPO
1 stop17h 20mKLM
Deal found 11/21$1,822
This Justfly.com deal was found by Cheapflights users on 11/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/211:00 amOPO - SEA
1 stop38h 05mTurkish Airlines
Sat 12/77:00 pmSEA - OPO
1 stop31h 00mTurkish Airlines
Deal found 11/21$2,759
This Cheapflightsfares deal was found by Cheapflights users on 11/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/138:20 amOPO - SEA
2 stops22h 55mIberia
Sun 12/156:50 pmSEA - OPO
2 stops28h 50mIberia
Deal found 11/21$3,396
This Arangrant deal was found by Cheapflights users on 11/21. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/108:20 amOPO - SEA
2 stops22h 01mBritish Airways
Sat 12/1410:32 amSEA - OPO
2 stops25h 28mBritish Airways
Deal found 11/21$3,806
This Arangrant deal was found by Cheapflights users on 11/21. 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 Arangrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/91:45 pmOPO - SEA
2 stops36h 40mLufthansa
Fri 12/1310:35 amSEA - OPO
2 stops29h 00mLufthansa
Deal found 11/21$3,829
This Aeromexico deal was found by Cheapflights users on 11/21. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/211:45 amOPO - SEA
1 stop31h 35mAir France
Sat 12/77:10 amSEA - OPO
2 stops43h 45mAir France
Deal found 11/21$4,493

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 2,612,795 searches. Data last updated November 21, 2024.

Fly from

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Fly to

Any airport

Route

Depart

Return

Price

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 1/13

5:35 pm-6:43 pm

1 stop33h 08m

Seattle/Tacoma Intl

Sun 1/26

2:35 pm-9:05 am

2 stops34h 30m

$715

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 1/13

5:00 am-11:50 am

1 stop14h 50m

Seattle/Tacoma Intl

Sun 1/26

12:35 pm-5:30 pm

1 stop20h 55m

$754

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 1/13

12:55 pm-4:55 pm

1 stop36h 00m

Seattle/Tacoma Intl

Sun 1/26

6:50 pm-9:45 pm

1 stop18h 55m

$765

PortoSeattle

OPO - SEA

OPOSEA

Porto

Sun 1/12

4:10 pm-11:50 am

1 stop27h 40m

Seattle/Tacoma Intl

Sat 1/25

9:54 am-10:50 am

2 stops16h 56m

$778

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 1/13

5:00 am-12:10 pm

1 stop15h 10m

Seattle/Tacoma Intl

Sun 1/26

7:08 am-8:10 am

1 stop17h 02m

$795

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 3/14

6:10 am-2:20 pm

1 stop15h 10m

Seattle/Tacoma Intl

Sat 4/5

2:20 pm-10:05 pm

1 stop23h 45m

$798

PortoSeattle

OPO - SEA

OPOSEA

Porto

Mon 1/13

11:15 am-11:50 am

1 stop32h 35m

Seattle/Tacoma Intl

Sun 1/19

10:55 pm-10:50 am

2 stops27h 55m

$799

PortoSeattle

OPO - SEA

OPOSEA

Porto

Sun 1/12

12:30 pm-10:00 pm

2 stops41h 30m

Seattle/Tacoma Intl

Sat 1/25

8:00 am-11:40 am

2 stops19h 40m

$810

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 3/14

10:00 am-10:41 pm

2 stops19h 41m

Seattle/Tacoma Intl

Sat 4/5

7:50 pm-8:00 am

2 stops28h 10m

$828

PortoSeattle

OPO - SEA

OPOSEA

Porto

Sun 1/12

8:55 am-12:10 pm

3 stops35h 15m

Seattle/Tacoma Intl

Sat 1/25

2:00 pm-10:20 pm

3 stops24h 20m

$887

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

Showing 1-10 of 32 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 November 21, 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 November 21, 2024.
See what other customers who have flown with United Airlines, Turkish Airlines and Air Canada from Portugal to Seattle have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very good
3,489 reviews

Entertainment

8.2

Crew

8.3

Food

7.9

Boarding

8.1

Overall

8.1

Comfort

8.0

Reviews

1 / 10

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Emirates
8.1
Very good
3,489 reviews
Emirates
8.1
Very good
3,489 reviews

Entertainment

8.2

Crew

8.3

Food

7.9

Boarding

8.1

Overall

8.1

Comfort

8.0

Reviews

1 / 10

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Delta
8.0
Very good
8,755 reviews
Emirates
8.1
Very good
3,489 reviews

Entertainment

8.2

Crew

8.3

Food

7.9

Boarding

8.1

Overall

8.1

Comfort

8.0

Reviews

1 / 10

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

KLM
7.8
Good
1,349 reviews
Emirates
8.1
Very good
3,489 reviews

Entertainment

8.2

Crew

8.3

Food

7.9

Boarding

8.1

Overall

8.1

Comfort

8.0

Reviews

1 / 10

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Finnair
7.7
Good
1,300 reviews
Emirates
8.1
Very good
3,489 reviews

Entertainment

8.2

Crew

8.3

Food

7.9

Boarding

8.1

Overall

8.1

Comfort

8.0

Reviews

1 / 10

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

Cathay Pacific
7.6
Good
878 reviews
Emirates
8.1
Very good
3,489 reviews

Entertainment

8.2

Crew

8.3

Food

7.9

Boarding

8.1

Overall

8.1

Comfort

8.0

Reviews

1 / 10

It was not a good experience the seats were small and uncomfortable the food was not good and they forgot to serve me my breakfast - there were 5 us in 2 rows that they just completely skipped us. Very disappointed.

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?

    $640 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 Finnair and British Airways, with prices starting from $646 and $647, 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 2,612,795 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$560Average$718FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$715Average$848FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$745Average$881FlexibilityNo cancel feeOn-time70%
DeltaCheapest$756Average$859FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$795Average$974FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$800Average$857FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$816Average$873FlexibilityNo cancel feeOn-time71%
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