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$289+ Cheap flights from Seattle (SEA) to Portugal

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 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LIS
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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Cheap flight deals from Seattle to Portugal

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Portugal (PT0). 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 Seattle to Portugal

Cheapest flights from Seattle to Portugal
Explore the most affordable flight options available from Seattle to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 21, 2024.

This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/12:25 pmSEA - LIS
1 stop21h 55mIcelandair
Mon 12/239:20 pmLIS - SEA
1 stop27h 40mIcelandair
Deal found 11/21$671
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.
Mon 12/22:24 pmSEA - LIS
3 stops34h 31mMultiple Airlines
Wed 12/1111:00 amLIS - SEA
3 stops32h 55mMultiple Airlines
Deal found 11/21$732
This Gurufare 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1111:50 amSEA - LIS
2 stops37h 05mScandinavian Airlines
Tue 1/2812:50 pmLIS - SEA
2 stops41h 31mScandinavian Airlines
Deal found 11/21$753
This Mytrip deal was found by Cheapflights users on 11/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/46:05 amSEA - OPO
2 stops33h 15mMultiple Airlines
Wed 12/116:05 amOPO - SEA
2 stops24h 05mMultiple Airlines
Deal found 11/20$755
This Gotogate deal was found by Cheapflights users on 11/19. 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.
Wed 12/47:00 pmSEA - OPO
1 stop36h 25mTurkish Airlines
Wed 12/1111:00 amOPO - SEA
1 stop38h 05mTurkish Airlines
Deal found 11/19$800
This lol.travel deal was found by Cheapflights users on 11/20. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/42:00 pmSEA - OPO
2 stops20h 40mSWISS
Wed 12/117:25 pmOPO - SEA
2 stops35h 21mSWISS
Deal found 11/20$850
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Wed 12/42:00 pmSEA - OPO
1 stop17h 15mUnited Airlines
Wed 12/116:00 amOPO - SEA
2 stops48h 10mUnited Airlines
Deal found 11/20$871
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/119:00 amSEA - LIS
1 stop13h 55mBritish Airways
Tue 1/286:30 amLIS - SEA
2 stops22h 51mBritish Airways
Deal found 11/21$878
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/119:00 amSEA - LIS
1 stop13h 55mAmerican Airlines
Tue 12/2411:10 amLIS - SEA
2 stops20h 12mAmerican Airlines
Deal found 11/21$883
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/17:00 pmSEA - LIS
1 stop31h 05mTurkish Airlines
Wed 12/114:00 pmLIS - SEA
1 stop33h 05mTurkish Airlines
Deal found 11/21$885
This Lucky2Go deal was found by Cheapflights users on 11/19. 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.
Sat 12/72:35 pmSEA - FNC
2 stops36h 30mMultiple Airlines
Sat 12/144:10 pmFNC - SEA
2 stops50h 18mMultiple Airlines
Deal found 11/19$895
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/297:15 pmSEA - LIS
2 stops30h 05mAir Canada
Mon 1/1311:00 amLIS - SEA
2 stops30h 50mAir Canada
Deal found 11/21$952

Find flights from Seattle to Portugal within your budget

Customize your flight search to find flights from Seattle to Portugal 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

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Tue 2/18

10:35 am-3:15 pm

2 stops20h 40m

Porto

Fri 2/28

6:00 am-9:30 pm

2 stops23h 30m

$615

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Sun 1/12

12:35 pm-10:55 am

1 stop14h 20m

Porto

Mon 1/27

11:15 am-11:50 am

1 stop32h 35m

$617

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Tue 2/18

6:15 am-3:15 pm

3 stops25h 00m

Porto

Thu 2/27

6:00 am-9:30 pm

2 stops47h 30m

$619

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Sun 1/12

3:25 pm-11:15 am

2 stops35h 50m

Porto

Mon 1/27

12:00 pm-9:20 pm

2 stops41h 20m

$630

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 1/12

6:05 am-9:25 pm

3 stops31h 20m

Lisbon Humberto Delgado

Sat 1/18

9:05 pm-1:20 pm

2 stops24h 15m

$652

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 1/19

6:05 am-9:20 am

1 stop19h 15m

Lisbon Humberto Delgado

Sun 1/26

11:00 am-10:53 pm

2 stops43h 53m

$653

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 2/17

7:05 pm-9:20 am

2 stops30h 15m

Lisbon Humberto Delgado

Sat 3/1

11:00 am-9:50 am

2 stops30h 50m

$654

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 1/31

6:50 pm-10:25 pm

1 stop19h 35m

Lisbon Humberto Delgado

Mon 2/10

4:10 pm-8:04 pm

2 stops35h 54m

$660

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 2/14

3:10 pm-1:20 pm

1 stop14h 10m

Lisbon Humberto Delgado

Thu 2/20

5:00 am-6:25 pm

2 stops21h 25m

$665

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 2/1

1:45 pm-12:10 pm

1 stop14h 25m

Lisbon Humberto Delgado

Thu 2/13

10:55 am-10:10 pm

1 stop19h 15m

$668

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

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Best time to book a flight from Seattle to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Seattle 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 Seattle to Portugal

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

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

Currently, December is the cheapest month in which you can book a flight from Seattle to Portugal (average of $589). Flying from Seattle to Portugal in June is currently the most expensive (average of $1,182). 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 SEA to PT?

Find hourly flight availability from Seattle to Portugal. 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.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Portugal as you normally would.

Rainfall in Portugal by month

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

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

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

If weather is an important factor for your trip to Portugal, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated November 21, 2024.
Read through reviews of airlines operating flights from Seattle to Portugal, such as Lufthansa, British Airways and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,755 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,755 reviews
Delta
8.0
Very good
8,755 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,349 reviews
Delta
8.0
Very good
8,755 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.7
Good
1,300 reviews
Delta
8.0
Very good
8,755 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.6
Good
1,636 reviews
Delta
8.0
Very good
8,755 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic
7.5
Good
663 reviews
Delta
8.0
Very good
8,755 reviews

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Portugal. 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 from for flights from Seattle to Portugal?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Portugal. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

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

    For one-way options, check prices for British Airways. According to our data, you can fly for as low as $447. Users have also found prices from $452 and $454 on Air France and United Airlines, respectively.

  • What are the most popular routes from Seattle to Portugal?

    When deciding which route to take from Seattle to Portugal consider Seattle/Tacoma Intl - Lisbon Humberto Delgado, Seattle/Tacoma Intl - Porto or Seattle/Tacoma Intl - Ponta Delgada Nordela as they are the most popular.

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

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

  • How can I find direct flights from Seattle to Portugal?

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

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

    Yes. Cheapflights offers flight deals from Seattle to Portugal 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 Seattle to Portugal?

    Currently, December is the cheapest month in which you can book a flight from Seattle to Portugal (average of $589). Flying from Seattle to Portugal in June is currently the most expensive (average of $1,182). 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 10 airlines flying from Seattle to Portugal

Discover the top 10 airlines that operate flights from Seattle to Portugal. 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
IcelandairCheapest$538Average$872FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$544Average$868FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$581Average$1,121FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$600Average$1,148FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$604Average$974FlexibilityNo cancel feeOn-time70%
Aer LingusCheapest$606Average$974FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$631Average$1,032FlexibilityNo cancel feeOn-time67%
DeltaCheapest$635Average$1,100FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$636Average$1,012FlexibilityNo cancel feeOn-time75%
Scandinavian AirlinesCheapest$652Average$785FlexibilityNo cancel feeOn-time77%
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