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$522+ 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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
Nov 10 — Nov 171
1 adult
Sun 11/10
Sun 11/17
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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 November 5, 2024.

This Gotogate deal was found by Cheapflights users on 11/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/212:10 pmLIS - SEA
1 stop31h 10mLufthansa
Fri 12/62:00 pmSEA - LIS
1 stop24h 50mLufthansa
Deal found 11/4$782
This KLM deal was found by Cheapflights users on 11/4. 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.
Thu 12/54:10 pmOPO - SEA
1 stop27h 42mKLM
Sun 12/812:34 pmSEA - OPO
1 stop14h 21mKLM
Deal found 11/4$787
This Gotogate deal was found by Cheapflights users on 11/5. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2212:30 pmOPO - SEA
1 stop31h 40mLufthansa
Fri 11/293:10 pmSEA - OPO
1 stop24h 25mLufthansa
Deal found 11/5$791
This Delta deal was found by Cheapflights users on 11/4. 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.
Thu 12/55:00 amLIS - SEA
1 stop14h 52mDelta
Sun 12/89:30 amSEA - LIS
2 stops17h 50mDelta
Deal found 11/4$795
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Thu 11/215:00 amLIS - SEA
1 stop15h 10mUnited Airlines
Fri 12/67:40 amSEA - LIS
1 stop16h 30mUnited Airlines
Deal found 11/4$796
This United Airlines deal was found by Cheapflights users on 11/5. 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.
Fri 11/226:00 amOPO - SEA
2 stops24h 37mUnited Airlines
Fri 11/292:00 pmSEA - OPO
1 stop17h 15mUnited Airlines
Deal found 11/5$797
This Booking.com deal was found by Cheapflights users on 11/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/226:30 amOPO - SEA
2 stops23h 37mAir Canada
Fri 11/295:45 amSEA - OPO
2 stops25h 30mAir Canada
Deal found 11/4$805
This Mytrip deal was found by Cheapflights users on 11/4. 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.
Thu 12/51:45 pmOPO - SEA
3 stops30h 25mMultiple Airlines
Sun 12/83:10 pmSEA - OPO
3 stops35h 20mMultiple Airlines
Deal found 11/4$807
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Fri 11/2212:25 pmOPO - SEA
2 stops20h 28mAmerican Airlines
Fri 11/296:50 pmSEA - OPO
2 stops17h 10mAmerican Airlines
Deal found 11/4$811
This British Airways deal was found by Cheapflights users on 11/4. 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.
Mon 11/116:35 pmLIS - SEA
1 stop24h 45mBritish Airways
Fri 2/211:45 pmSEA - LIS
1 stop17h 10mBritish Airways
Deal found 11/4$812
This American Airlines deal was found by Cheapflights users on 11/5. 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.
Thu 11/218:20 amLIS - SEA
2 stops16h 35mAmerican Airlines
Fri 12/66:13 amSEA - LIS
2 stops17h 42mAmerican Airlines
Deal found 11/5$822
This Mytrip deal was found by Cheapflights users on 11/4. 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.
Thu 12/53:00 pmLIS - SEA
2 stops30h 20mMultiple Airlines
Sun 12/83:10 pmSEA - LIS
3 stops35h 25mMultiple Airlines
Deal found 11/4$827

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 2,554,862 searches. Data last updated November 5, 2024.

Fly from

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Fly to

Any airport

Route

Depart

Return

Price

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 2/14

8:05 pm-2:50 pm

2 stops26h 45m

$642

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 12/4

11:35 am-5:05 pm

1 stop37h 30m

$649

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 2/14

10:50 am-6:15 pm

1 stop15h 25m

$656

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 2/13

7:00 am-4:55 pm

1 stop17h 55m

$663

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 12/4

6:35 pm-10:21 pm

2 stops35h 46m

$673

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 2/17

6:30 am-11:07 pm

2 stops24h 37m

$674

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 12/31

9:30 am-11:50 am

1 stop34h 20m

$814

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 12/2

5:00 am-12:10 pm

1 stop15h 10m

$893

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sun 2/16

5:00 am-12:55 am

3 stops27h 55m

$914

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 1/1

11:00 am-9:30 pm

1 stop18h 30m

$929

Flights are sorted by cheapest first

Deals found on 11/4

Showing 1-10 of 37 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 5, 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 5, 2024.
See what other customers who have flown with KLM, Delta and Lufthansa 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
8,830 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

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
8,830 reviews
Delta
8.0
Very good
8,830 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

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
1,350 reviews
Delta
8.0
Very good
8,830 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 10

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

Cathay Pacific
7.7
Good
876 reviews
Delta
8.0
Very good
8,830 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

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
1,316 reviews
Delta
8.0
Very good
8,830 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Reviews

1 / 10

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

Air France
7.4
Good
1,530 reviews
Delta
8.0
Very good
8,830 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

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.

  • Can I find flights from Portugal to Seattle for under $800 on Cheapflights?

    Yes, there are multiple flights from Portugal to Seattle for under $800. The cheapest flight booked recently is on KLM for just $765, but on average you can expect to pay $1,128.

  • Are there last-minute flights available from Portugal to Seattle for under $900?

    There are currently 10+ open flights from Portugal to Seattle within the next 7 days for less than $900.

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

    $649 is the cheapest one-way deal found within the past few days, from Turkish Airlines. You may also be able to find cheap deals on Aer Lingus and Finnair, with prices starting from $656 and $663, respectively.

  • What does LIS to SEA mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Lisbon Humberto Delgado Airport to Seattle/Tacoma Intl Airport flight would often be abbreviated as a LIS to SEA flight. Ready for more IATA code knowledge? These are related airports for your current travel destination: Porto Airport (OPO), Funchal Madeira Airport (FNC), Faro Airport (FAO), Ponta Delgada Nordela Airport (PDL), Lajes Airport (TER).

  • Can I find deals for flights from Portugal to Seattle that include extra baggage allowance?

    The amount of baggage you can bring on your Portugal to Seattle flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Portugal to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter Portugal to Seattle flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Portugal to Seattle that allow pets onboard?

    Many airlines flying from Portugal to Seattle offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Portugal to Seattle?

    Yes, you can often find last-minute deals on Portugal to Seattle flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Portugal to Seattle flight deals updated?

    The Portugal to Seattle flight deals you see on this page were last updated on 11/5.

  • 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 6 airlines flying from Portugal to Seattle

Discover the top 6 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 2,554,862 searches. Data last updated November 5, 2024.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$560Average$718FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$715Average$894FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$745Average$867FlexibilityNo cancel feeOn-time70%
DeltaCheapest$756Average$980FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$800Average$885FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$816Average$873FlexibilityNo cancel feeOn-time71%
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