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$457+ Cheap flights from Seattle (SEA) to Algarve

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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — FAO
Nov 1 — Nov 81
Sat 11/1
Sat 11/8
1 adult, Economy
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Cheap flight deals from Seattle to Algarve

Keep the following information in mind while searching for Seattle to Algarve flight deals. Data was last updated October 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$531
(KLM)

One-way from

$457
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$914
Provider with most accurate pricing for Seattle/Tacoma Intl-Faro flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Faro flights.
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From Seattle/Tacoma Intl to Algarve
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One-way flight from Seattle/Tacoma Intl to Algarve
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Highest demand for flights based on searches. 22% potential increase in price ($339 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($90 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Seattle to Algarve

Cheapest flights from Seattle to Algarve
Explore the most affordable flight options available from Seattle to Algarve. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 2, 2025.

This Mytrip deal was found by Cheapflights users on 9/30. 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.
Fri 11/142:35 pmSEA - FAO
3 stops33h 20mMultiple Airlines
Fri 11/214:35 pmFAO - SEA
3 stops32h 25mMultiple Airlines
Deal found 9/30$840
This Mytrip deal was found by Cheapflights users on 9/30. 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 12/222:35 pmSEA - FAO
2 stops24h 05mMultiple Airlines
Mon 1/54:35 pmFAO - SEA
3 stops32h 25mMultiple Airlines
Deal found 9/30$1,575
This Gurufare deal was found by Cheapflights users on 9/30. 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.
Mon 12/222:00 pmSEA - FAO
2 stops36h 25mLufthansa
Mon 1/54:35 pmFAO - SEA
2 stops27h 35mLufthansa
Deal found 9/30$1,838
This KLM deal was found by Cheapflights users on 9/30. 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 12/223:05 pmSEA - FAO
1 stop19h 50mKLM
Mon 1/57:15 pmFAO - SEA
1 stop24h 35mKLM
Deal found 9/30$1,877

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Algarve 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 October 2, 2025.
Use the filters below to find and compare flights from Seattle to Algarve that are best for you.

Fly from

Seattle

Fly to

Algarve

Route

Depart

Return

Price

SeattleFaro

SEA - FAO

SEAFAO

Seattle/Tacoma Intl

Fri 11/14

2:35 pm-7:55 am

3 stops33h 20m

Faro

Fri 11/21

4:35 pm-5:00 pm

3 stops32h 25m

$840

SeattleFaro

SEA - FAO

SEAFAO

Seattle/Tacoma Intl

Mon 12/22

2:35 pm-10:40 pm

2 stops24h 05m

Faro

Mon 1/5

4:35 pm-5:00 pm

3 stops32h 25m

$1,575

SeattleFaro

SEA - FAO

SEAFAO

Seattle/Tacoma Intl

Mon 12/22

2:00 pm-10:25 am

2 stops36h 25m

Faro

Mon 1/5

4:35 pm-12:10 pm

2 stops27h 35m

$1,838

SeattleFaro

SEA - FAO

SEAFAO

Seattle/Tacoma Intl

Mon 12/22

3:05 pm-6:55 pm

1 stop19h 50m

Faro

Mon 1/5

7:15 pm-11:50 am

1 stop24h 35m

$1,877

SeattleFaro

SEA - FAO

SEAFAO

Seattle/Tacoma Intl

Thu 12/18

3:40 pm-12:35 pm

2 stops36h 55m

Faro

Thu 12/25

4:35 pm-1:20 pm

2 stops28h 45m

$3,077

SeattleFaro

SEA - FAO

SEAFAO

Seattle/Tacoma Intl

Wed 11/12

7:00 am-11:40 am

2 stops20h 40m

$457

SeattleFaro

SEA - FAO

SEAFAO

Seattle/Tacoma Intl

Wed 11/12

6:50 pm-5:45 pm

1 stop14h 55m

$464

SeattleFaro

SEA - FAO

SEAFAO

Seattle/Tacoma Intl

Wed 11/12

8:05 pm-5:30 pm

1 stop13h 25m

$531

SeattleFaro

SEA - FAO

SEAFAO

Seattle/Tacoma Intl

Tue 11/11

12:41 am-2:55 pm

2 stops30h 14m

$560

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/1

Best time to book a flight from Seattle to Algarve

Have a flexible travel schedule? Discover the best time to fly to Algarve 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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Algarve

What is the cheapest time of day to fly from SEA to SAL?

Find hourly flight availability from Seattle to Algarve. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 2, 2025.

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

Reviews of airlines servicing Algarve

Get insights into the airlines that provide service to Algarve. 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 Algarve. Reviews last updated October 2, 2025.
Read reviews from past customers who have flown KLM, Aer Lingus, and Lufthansa from Seattle to Algarve. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,389 reviews

Food

7.3

Overall

7.8

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Bobby,Sep 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent
KLM
7.8
Good
1,389 reviews
KLM
7.8
Good
1,389 reviews

Food

7.3

Overall

7.8

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Bobby,Sep 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent
Aer Lingus
7.2
Good
1,309 reviews
KLM
7.8
Good
1,389 reviews

Food

7.3

Overall

7.8

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Bobby,Sep 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent
Lufthansa
6.8
Okay
7,446 reviews
KLM
7.8
Good
1,389 reviews

Food

7.3

Overall

7.8

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Bobby,Sep 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent
British Airways
6.7
Okay
7,416 reviews
KLM
7.8
Good
1,389 reviews

Food

7.3

Overall

7.8

Comfort

7.7

Entertainment

7.1

Boarding

7.8

Crew

8.4

Reviews

1 / 20
10.0
Excellent

Bobby,Sep 2025

EDI - ATL

Food was above average but could be better, The flight was operated by Delta and was excellent

Related info for your journey

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

    For a flight from Seattle to Algarve, you will be flying from Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $457. British Airways flights start at $464 while deals on Aer Lingus start at $531 one-way.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Seattle to Algarve (average of $628). Flying from Seattle to Algarve in June is currently the most expensive (average of $1,329). 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 4 airlines flying from Seattle to Algarve

Discover the top 4 airlines that operate flights from Seattle to Algarve. 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 October 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$696Average$1,251FlexibilityNo cancel feeOn-time70%
KLMCheapest$703Average$1,116FlexibilityNo cancel feeOn-time75%
Aer LingusCheapest$756Average$1,012FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$782Average$938FlexibilityNo cancel feeOn-time76%

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