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$340+ 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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
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 January 21, 2025.

Round-trip from

$696
(Lucky2Go)

One-way from

$340
(Kiwi.com)
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 January 21, 2025.

This FlightHub deal was found by Cheapflights users on 1/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:55 amLIS - SEA
1 stop14h 55mMultiple Airlines
Fri 9/194:20 pmSEA - LIS
1 stop32h 40mMultiple Airlines
Deal found 1/21$634
This Lucky2Go deal was found by Cheapflights users on 1/20. 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 Lucky2Go is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1710:50 amLIS - SEA
1 stop15h 25mAer Lingus
Mon 3/316:45 pmSEA - LIS
1 stop18h 50mAer Lingus
Deal found 1/20$696
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Mon 3/176:30 amLIS - SEA
2 stops23h 37mAmerican Airlines
Mon 3/318:20 pmSEA - LIS
1 stop18h 50mAmerican Airlines
Deal found 1/20$699
This British Airways deal was found by Cheapflights users on 1/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/311:05 amLIS - SEA
1 stop19h 04mBritish Airways
Mon 3/247:50 pmSEA - LIS
1 stop16h 05mBritish Airways
Deal found 1/21$701
This American Airlines deal was found by Cheapflights users on 1/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/68:20 amOPO - SEA
2 stops33h 21mAmerican Airlines
Mon 2/1010:33 amSEA - OPO
2 stops21h 27mAmerican Airlines
Deal found 1/21$720
This United Airlines deal was found by Cheapflights users on 1/21. 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 3/56:00 amOPO - SEA
2 stops47h 30mUnited Airlines
Wed 3/128:10 amSEA - OPO
2 stops24h 05mUnited Airlines
Deal found 1/21$769
This Delta deal was found by Cheapflights users on 1/20. 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.
Mon 3/175:00 amLIS - SEA
1 stop14h 40mDelta
Wed 4/21:50 pmSEA - LIS
2 stops20h 05mDelta
Deal found 1/20$773
This Fly & Visit Rome deal was found by Cheapflights users on 1/21. 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 Fly & Visit Rome is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/61:45 pmOPO - SEA
1 stop31h 35mLufthansa
Mon 2/102:00 pmSEA - OPO
1 stop17h 25mLufthansa
Deal found 1/21$777
This Mytrip deal was found by Cheapflights users on 1/21. 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 3/54:05 pmOPO - SEA
3 stops28h 05mMultiple Airlines
Wed 3/123:05 pmSEA - OPO
3 stops33h 40mMultiple Airlines
Deal found 1/21$780
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Sun 4/205:05 amLIS - SEA
1 stop15h 20mUnited Airlines
Sun 5/2511:37 pmSEA - LIS
2 stops25h 43mUnited Airlines
Deal found 1/20$782
This KLM deal was found by Cheapflights users on 1/21. 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.
Wed 3/54:10 pmOPO - SEA
1 stop27h 27mKLM
Wed 3/123:15 pmSEA - OPO
1 stop21h 05mKLM
Deal found 1/21$796
This oojo deal was found by Cheapflights users on 1/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/195:55 amLIS - SEA
1 stop19h 15mTurkish Airlines
Thu 7/177:05 pmSEA - LIS
1 stop30h 50mTurkish Airlines
Deal found 1/21$813

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 3/17

10:50 am-7:15 pm

1 stop15h 25m

Seattle/Tacoma Intl

Mon 3/31

6:45 pm-9:35 pm

1 stop18h 50m

$696

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 3/17

6:30 am-11:07 pm

2 stops23h 37m

Seattle/Tacoma Intl

Mon 3/31

8:20 pm-11:10 pm

1 stop18h 50m

$699

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 3/3

6:30 am-11:06 pm

2 stops24h 36m

Seattle/Tacoma Intl

Mon 3/24

7:50 pm-6:55 pm

1 stop16h 05m

$700

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 3/3

11:05 am-10:09 pm

1 stop19h 04m

Seattle/Tacoma Intl

Mon 3/24

7:50 pm-6:55 pm

1 stop16h 05m

$701

PortoSeattle

OPO - SEA

OPOSEA

Porto

Thu 2/6

8:20 am-9:41 am

2 stops33h 21m

Seattle/Tacoma Intl

Mon 2/10

10:33 am-4:00 pm

2 stops21h 27m

$720

PortoSeattle

OPO - SEA

OPOSEA

Porto

Wed 3/5

6:00 am-9:30 pm

2 stops47h 30m

Seattle/Tacoma Intl

Wed 3/12

8:10 am-3:15 pm

2 stops24h 05m

$769

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 3/17

5:00 am-12:40 pm

1 stop14h 40m

Seattle/Tacoma Intl

Wed 4/2

1:50 pm-5:55 pm

2 stops20h 05m

$773

PortoSeattle

OPO - SEA

OPOSEA

Porto

Thu 2/6

1:45 pm-1:20 pm

1 stop31h 35m

Seattle/Tacoma Intl

Mon 2/10

2:00 pm-3:25 pm

1 stop17h 25m

$777

PortoSeattle

OPO - SEA

OPOSEA

Porto

Wed 3/5

4:05 pm-12:10 pm

3 stops28h 05m

Seattle/Tacoma Intl

Wed 3/12

3:05 pm-7:45 am

3 stops33h 40m

$780

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sun 4/20

5:05 am-12:25 pm

1 stop15h 20m

Seattle/Tacoma Intl

Sun 5/25

11:37 pm-9:20 am

2 stops25h 43m

$782

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

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 January 21, 2025.

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 January 21, 2025.
See what other customers who have flown with United Airlines, Turkish Airlines and American Airlines 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
8,521 reviews

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

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
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

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
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Reviews

1 / 10

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

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Reviews

1 / 10

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

United Airlines
7.4
Good
8,985 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Reviews

1 / 10

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

Turkish Airlines
7.3
Good
3,931 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

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?

    $602 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 Iberia, with prices starting from $636 and $654, 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

Traveling to a place near Portugal?

Book flights to Portugal if you plan to visit one of these locations
SeaTac
Tukwila
Renton
Tacoma
Lacey
Federal Way
Ocean Shores
Leavenworth
Olympia
Marysville
Centralia
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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Alternative routes for Portugal to Seattle

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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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$668Average$718FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$715Average$848FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$745Average$890FlexibilityNo 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$801Average$873FlexibilityNo cancel feeOn-time71%
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