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$258+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LIS
Dec 28 — Jan 41
Sat 12/28
Sat 1/4
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 December 23, 2024.

Round-trip from

$623
(Mytrip)

One-way from

$258
(Kiwi.com)
From Seattle/Tacoma Intl to Portugal
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One-way flight from Seattle/Tacoma Intl to Portugal
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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 December 23, 2024.

This FlightHub deal was found by Cheapflights users on 12/23. 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 12/273:05 pmSEA - LIS
2 stops58h 15mMultiple Airlines
Mon 1/1312:15 pmLIS - SEA
2 stops41h 05mMultiple Airlines
Deal found 12/23$1,028
This United Airlines deal was found by Cheapflights users on 12/22. 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 12/295:00 amSEA - LIS
2 stops21h 15mUnited Airlines
Sat 1/115:00 amLIS - SEA
2 stops24h 30mUnited Airlines
Deal found 12/22$1,064
This Air Canada deal was found by Cheapflights users on 12/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/296:05 amSEA - LIS
1 stop19h 15mAir Canada
Sat 1/115:00 amLIS - SEA
2 stops24h 30mAir Canada
Deal found 12/22$1,065
This Delta deal was found by Cheapflights users on 12/23. 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.
Tue 12/246:15 amSEA - LIS
2 stops20h 20mDelta
Tue 12/315:00 amLIS - SEA
1 stop14h 52mDelta
Deal found 12/23$1,159
This oojo deal was found by Cheapflights users on 12/23. 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.
Fri 12/277:00 pmSEA - LIS
1 stop36h 00mTurkish Airlines
Sat 1/411:35 amLIS - SEA
1 stop37h 30mTurkish Airlines
Deal found 12/23$2,009
This Gurufare deal was found by Cheapflights users on 12/23. 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.
Fri 12/2712:31 amSEA - LIS
2 stops49h 39mAer Lingus
Fri 1/310:50 amLIS - SEA
1 stop15h 25mAer Lingus
Deal found 12/23$2,018
This Gurufare deal was found by Cheapflights users on 12/22. 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.
Tue 12/246:50 pmSEA - OPO
2 stops28h 50mIberia
Tue 1/78:40 pmOPO - SEA
2 stops32h 41mIberia
Deal found 12/22$2,166
This American Airlines deal was found by Cheapflights users on 12/23. 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 12/2711:10 pmSEA - LIS
1 stop25h 55mAmerican Airlines
Sat 1/410:30 amLIS - SEA
2 stops18h 31mAmerican Airlines
Deal found 12/23$2,195
This Delta deal was found by Cheapflights users on 12/23. 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.
Tue 12/241:35 pmSEA - OPO
1 stop13h 15mDelta
Tue 1/76:00 amOPO - SEA
2 stops24h 25mDelta
Deal found 12/23$2,607
This KAYAK deal was found by Cheapflights users on 12/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:50 pmSEA - LIS
1 stop19h 00mBritish Airways
Sat 1/410:30 amLIS - SEA
1 stop19h 24mBritish Airways
Deal found 12/22$2,650
This FlightHub deal was found by Cheapflights users on 12/23. 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.
Tue 12/247:00 pmSEA - OPO
1 stop36h 25mTurkish Airlines
Tue 1/74:25 pmOPO - SEA
1 stop32h 40mTurkish Airlines
Deal found 12/23$3,027
This KAYAK deal was found by Cheapflights users on 12/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2312:37 pmSEA - FNC
2 stops39h 38mLufthansa
Mon 12/304:20 amFNC - SEA
2 stops24h 16mLufthansa
Deal found 12/22$3,078

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 2,558,603 searches. Data last updated December 23, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Thu 2/6

2:35 pm-6:50 am

3 stops32h 15m

Porto

Thu 2/13

6:35 am-5:00 pm

2 stops18h 25m

$629

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 3/10

8:00 pm-3:00 pm

1 stop36h 00m

Lisbon Humberto Delgado

Mon 3/17

4:00 pm-6:05 pm

1 stop33h 05m

$652

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 2/18

7:30 am-3:35 pm

2 stops24h 05m

Lisbon Humberto Delgado

Wed 3/5

7:00 pm-10:25 pm

2 stops35h 25m

$657

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 2/19

6:05 am-9:20 am

1 stop19h 15m

Lisbon Humberto Delgado

Wed 2/26

5:00 am-10:07 pm

2 stops25h 07m

$662

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 3/27

3:35 pm-8:20 pm

1 stop21h 45m

Lisbon Humberto Delgado

Sun 4/6

10:20 pm-5:50 pm

1 stop27h 30m

$668

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 3/1

11:48 pm-5:35 am

1 stop21h 47m

Lisbon Humberto Delgado

Sat 3/15

6:05 am-2:21 pm

2 stops39h 16m

$674

SeattleFunchal

SEA - FNC

SEAFNC

Seattle/Tacoma Intl

Sun 2/2

2:35 pm-1:00 am

2 stops26h 25m

Funchal Madeira

Mon 2/10

1:05 pm-5:00 pm

2 stops35h 55m

$693

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Wed 2/5

2:09 pm-10:30 am

1 stop36h 21m

Porto

Wed 2/12

12:35 pm-11:46 am

1 stop31h 11m

$706

SeattlePorto

SEA - OPO

SEAOPO

Seattle/Tacoma Intl

Mon 2/3

12:50 pm-11:15 am

2 stops38h 25m

Porto

Mon 2/10

7:20 pm-10:53 pm

2 stops35h 33m

$716

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 3/23

6:05 am-9:20 am

1 stop20h 15m

Lisbon Humberto Delgado

Wed 4/2

12:50 pm-3:58 pm

2 stops35h 08m

$723

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/23

Showing 1-10 of 60 results
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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, January is the cheapest month in which you can book a flight from Seattle to Portugal (average of $612). Flying from Seattle to Portugal in June is currently the most expensive (average of $1,250). 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 December 23, 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 December 23, 2024.
Read through reviews of airlines operating flights from Seattle to Portugal, such as Air Canada, British Airways and Air France. 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
8,588 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

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
8,588 reviews
Delta
8.0
Very good
8,588 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

Reviews

1 / 10

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

KLM
7.8
Good
1,345 reviews
Delta
8.0
Very good
8,588 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

Reviews

1 / 10

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

Finnair
7.7
Good
1,285 reviews
Delta
8.0
Very good
8,588 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

Reviews

1 / 10

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

SWISS
7.6
Good
1,605 reviews
Delta
8.0
Very good
8,588 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

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
667 reviews
Delta
8.0
Very good
8,588 reviews

Crew

8.6

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Food

7.3

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 TAP AIR PORTUGAL. According to our data, you can fly for as low as $370. Users have also found prices from $389 and $413 on Icelandair and Scandinavian 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 - Faro 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, January is the cheapest month in which you can book a flight from Seattle to Portugal (average of $612). Flying from Seattle to Portugal in June is currently the most expensive (average of $1,250). 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.

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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 2,558,603 searches. Data last updated December 23, 2024.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$539Average$862FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$544Average$885FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$600Average$1,141FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$612Average$1,013FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$632Average$1,097FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$635Average$977FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$652Average$797FlexibilityNo cancel feeOn-time77%
DeltaCheapest$674Average$1,105FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$684Average$1,013FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$689Average$1,053FlexibilityNo cancel feeOn-time67%
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