Lisbon

$296+ Cheap flights from Seattle (SEA) to Lisbon (LIS)

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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LIS
Feb 11 — Feb 181
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The best prices from Seattle/Tacoma Intl to Lisbon Humberto Delgado are usually found in February or January, booked 15 days in advance, depart on a Monday or Tuesday and return on a Wednesday

Cheap flight deals from Seattle to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Lisbon (LIS). 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 February 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$707
(Kiwi.com)

One-way from

$296
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$759
Provider with most accurate pricing for Seattle/Tacoma Intl-Lisbon Humberto Delgado flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Lisbon Humberto Delgado flights.
From Seattle/Tacoma Intl to Lisbon Humberto Delgado
One-way flight from Seattle/Tacoma Intl to Lisbon Humberto Delgado
Highest demand for flights based on searches. 19% potential increase in price ($240 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Average for round-trip flights in February 2025

Find flight deals from Seattle to Lisbon

Cheapest flights from Seattle to Lisbon
Explore the most affordable flight options available from Seattle to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 6, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/2311:30 pmSEA - LIS
1 stop22h 05mMultiple Airlines
Mon 3/104:00 pmLIS - SEA
2 stops53h 21mMultiple Airlines
Deal found 2/5$707
This Cheapflightsfares deal was found by Cheapflights users on 2/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/76:50 pmSEA - LIS
1 stop15h 05mBritish Airways
Mon 3/316:45 pmLIS - SEA
1 stop24h 25mBritish Airways
Deal found 2/4$708
This United Airlines deal was found by Cheapflights users on 2/6. 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.
Sat 3/2211:59 pmSEA - LIS
2 stops27h 16mUnited Airlines
Mon 3/3112:20 pmLIS - SEA
3 stops35h 38mUnited Airlines
Deal found 2/6$713
This Icelandair deal was found by Cheapflights users on 2/5. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/256:55 pmSEA - LIS
1 stop18h 25mIcelandair
Sun 11/29:20 pmLIS - SEA
1 stop27h 40mIcelandair
Deal found 2/5$720
This Air Canada deal was found by Cheapflights users on 2/5. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/87:05 pmSEA - LIS
2 stops30h 15mAir Canada
Wed 11/265:00 amLIS - SEA
2 stops17h 30mAir Canada
Deal found 2/5$723
This American Airlines deal was found by Cheapflights users on 2/5. 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.
Sat 3/11:33 pmSEA - LIS
2 stops17h 17mAmerican Airlines
Sun 3/911:05 amLIS - SEA
1 stop17h 51mAmerican Airlines
Deal found 2/5$741
This Expedia deal was found by Cheapflights users on 2/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/82:00 pmSEA - LIS
1 stop17h 05mLufthansa
Sat 3/155:00 amLIS - SEA
1 stop15h 10mLufthansa
Deal found 2/6$750
This FlightHub deal was found by Cheapflights users on 2/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/197:00 pmSEA - LIS
1 stop36h 00mTurkish Airlines
Wed 3/2611:35 amLIS - SEA
1 stop37h 30mTurkish Airlines
Deal found 2/5$769
This Delta deal was found by Cheapflights users on 2/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/136:40 pmSEA - LIS
1 stop15h 10mDelta
Sun 4/2011:40 amLIS - SEA
1 stop32h 05mDelta
Deal found 2/5$828
This KLM deal was found by Cheapflights users on 2/4. 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 4/105:50 pmSEA - LIS
1 stop16h 50mKLM
Mon 4/217:30 pmLIS - SEA
1 stop24h 15mKLM
Deal found 2/4$840

Find flights from Seattle to Lisbon within your budget

Customize your flight search to find flights from Seattle to Lisbon 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 February 6, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 2/23

11:30 pm-5:35 am

1 stop22h 05m

Lisbon Humberto Delgado

Mon 3/10

4:00 pm-2:21 pm

2 stops53h 21m

$707

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 3/7

6:50 pm-5:55 pm

1 stop15h 05m

Lisbon Humberto Delgado

Mon 3/31

6:45 pm-11:10 am

1 stop24h 25m

$708

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 3/31

5:45 am-9:20 am

2 stops19h 35m

Lisbon Humberto Delgado

Wed 4/9

11:25 am-9:53 am

2 stops30h 28m

$725

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 4/14

11:45 pm-9:20 am

2 stops25h 35m

Lisbon Humberto Delgado

Tue 4/22

11:25 am-3:58 pm

2 stops36h 33m

$728

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 3/1

1:33 pm-2:50 pm

2 stops17h 17m

Lisbon Humberto Delgado

Sun 3/9

11:05 am-9:56 pm

1 stop17h 51m

$741

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 3/26

3:00 pm-2:55 pm

1 stop16h 55m

Lisbon Humberto Delgado

Wed 4/2

6:15 am-4:59 pm

1 stop18h 44m

$750

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 2/19

7:00 pm-3:00 pm

1 stop36h 00m

Lisbon Humberto Delgado

Wed 3/26

4:00 pm-6:05 pm

1 stop33h 05m

$769

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 2/24

2:35 pm-10:10 pm

2 stops23h 35m

Lisbon Humberto Delgado

Mon 3/3

9:20 pm-5:00 pm

1 stop27h 40m

$779

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 4/13

6:40 pm-5:50 pm

1 stop15h 10m

Lisbon Humberto Delgado

Sun 4/20

11:40 am-11:45 am

1 stop32h 05m

$828

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 4/10

5:50 pm-6:40 pm

1 stop16h 50m

Lisbon Humberto Delgado

Mon 4/21

7:30 pm-11:45 am

1 stop24h 15m

$840

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/6

Showing 1-10 of 24 results
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Compare providers for flights from Seattle to Lisbon

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Lisbon in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapOairPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Lisbon flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Lisbon flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Lisbon flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Lisbon flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Lisbon

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

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

How far ahead should I book a flight from Seattle to Lisbon?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Lisbon. Price data was last updated on January 31, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Lisbon, you should look to book at least 15 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Lisbon (average of $612). Flying from Seattle to Lisbon in June is currently the most expensive (average of $1,244). 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 LIS?

Find hourly flight availability from Seattle to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 6, 2025.

When flying from Seattle to Lisbon, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 11% versus a flight at noon.

What is the cheapest day to fly from Seattle to Lisbon?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Lisbon. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Lisbon flight should consider departing on Monday afternoons when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Lisbon by month

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

In terms of precipitation, rainfall in Lisbon 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 Lisbon when rainfall is around 0.2 in.

Temperature in Lisbon by month

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

If weather is an important factor for your trip to Lisbon, 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 Lisbon

Get insights into the airlines that provide service to Lisbon. 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 Lisbon. Reviews last updated February 6, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and SWISS from Seattle to Lisbon to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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

8.0
Very good