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Cheap flights from Seattle to Lisbon from C$ 469

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 23/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LIS
1 Jul — 8 Jul1
1 adult

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 26 June 2025.

Round-trip from

C$ 744

One-way from

C$ 469

Popular in

June

Cheapest in

January

Average price

C$ 1,870
Lufthansa
  • Lufthansa
  • 3/11-15/11
  • 3 total stops
  • 70h 30m total
  • Seattle to Lisbon
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Icelandair
  • Icelandair
  • 23/7
  • 1 total stop
  • 21h 35m total
  • Seattle to Lisbon
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 375 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 70 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
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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 26 June 2025.

Mon 3/1110:00 a.m.SEA - LIS
2 stops39h 20mLufthansa
Sat 15/112:10 p.m.LIS - SEA
1 stop31h 10mLufthansa
Deal found 25/6C$ 744
Sun 2/1111:50 p.m.SEA - LIS
2 stops26h 25mUnited Airlines
Thu 13/1110:15 a.m.LIS - SEA
2 stops18h 58mUnited Airlines
Deal found 25/6C$ 751
Thu 30/1010:46 a.m.SEA - LIS
2 stops18h 24mBritish Airways
Sat 8/1110:30 a.m.LIS - SEA
1 stop19h 19mBritish Airways
Deal found 26/6C$ 752
Thu 6/112:30 p.m.SEA - LIS
2 stops40h 05mSWISS
Wed 12/1112:15 p.m.LIS - SEA
2 stops42h 14mSWISS
Deal found 25/6C$ 771
Sat 1/119:55 p.m.SEA - LIS
1 stop27h 05mDelta
Thu 13/1110:00 a.m.LIS - SEA
2 stops22h 09mDelta
Deal found 25/6C$ 792
Tue 4/119:55 p.m.SEA - LIS
1 stop26h 05mVirgin Atlantic
Tue 18/1111:15 a.m.LIS - SEA
1 stop18h 58mVirgin Atlantic
Deal found 25/6C$ 805
Sat 25/107:20 a.m.SEA - LIS
1 stop17h 40mMultiple Airlines
Sat 1/1111:15 a.m.LIS - SEA
1 stop16h 58mMultiple Airlines
Deal found 25/6C$ 812
Sat 13/911:30 p.m.SEA - LIS
1 stop13h 50mIcelandair
Thu 25/910:20 p.m.LIS - SEA
1 stop30h 20mIcelandair
Deal found 26/6C$ 886
Mon 15/97:10 p.m.SEA - LIS
1 stop20h 25mTurkish Airlines
Thu 25/95:55 a.m.LIS - SEA
1 stop19h 20mTurkish Airlines
Deal found 26/6C$ 986
Tue 18/117:20 a.m.SEA - LIS
2 stops24h 45mScandinavian Airlines
Sat 29/117:05 a.m.LIS - SEA
2 stops23h 18mScandinavian Airlines
Deal found 25/6C$ 1,184

Cheapflights Fare Finder

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 629,999 searches. Data last updated 26 June 2025.
Use the filters below to find and compare flights from Seattle to Lisbon that are best for you.

Fly from

Seattle

Fly to

Lisbon

Route

Depart

Return

Price

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 3/11

10:00 a.m.-9:20 a.m.

2 stops39h 20m

Lisbon Humberto Delgado

Sat 15/11

2:10 p.m.-1:20 p.m.

1 stop31h 10m

C$ 744

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 2/11

11:50 p.m.-10:15 a.m.

2 stops26h 25m

Lisbon Humberto Delgado

Thu 13/11

10:15 a.m.-9:13 p.m.

2 stops18h 58m

C$ 751

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 30/10

10:46 a.m.-12:10 p.m.

2 stops18h 24m

Lisbon Humberto Delgado

Sat 8/11

10:30 a.m.-9:49 p.m.

1 stop19h 19m

C$ 752

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 6/11

2:30 p.m.-2:35 p.m.

2 stops40h 05m

Lisbon Humberto Delgado

Wed 12/11

12:15 p.m.-10:29 p.m.

2 stops42h 14m

C$ 771

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 1/11

9:55 p.m.-8:00 a.m.

1 stop27h 05m

Lisbon Humberto Delgado

Thu 13/11

10:00 a.m.-12:09 a.m.

2 stops22h 09m

C$ 792

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 4/11

9:55 p.m.-8:00 a.m.

1 stop26h 05m

Lisbon Humberto Delgado

Tue 18/11

11:15 a.m.-10:13 p.m.

1 stop18h 58m

C$ 805

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 25/10

7:20 a.m.-9:00 a.m.

1 stop17h 40m

Lisbon Humberto Delgado

Sat 1/11

11:15 a.m.-9:13 p.m.

1 stop16h 58m

C$ 812

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 13/9

11:30 p.m.-9:20 p.m.

1 stop13h 50m

Lisbon Humberto Delgado

Thu 25/9

10:20 p.m.-8:40 p.m.

1 stop30h 20m

C$ 886

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 15/9

7:10 p.m.-11:35 p.m.

1 stop20h 25m

Lisbon Humberto Delgado

Thu 25/9

5:55 a.m.-5:15 p.m.

1 stop19h 20m

C$ 986

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 18/11

7:20 a.m.-4:05 p.m.

2 stops24h 45m

Lisbon Humberto Delgado

Sat 29/11

7:05 a.m.-10:23 p.m.

2 stops23h 18m

C$ 1,184

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/6

Showing 1-10 of 14 results
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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.

Cheapflights Insights

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

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 20 June 2025.

Booking 29 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Lisbon. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 C$ 482). Flying from Seattle to Lisbon in July is currently the most expensive (average of C$ 776). 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 26 June 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 morning, which can drop the price by up to 6% versus a flight at noon.

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 26 June 2025.
See what other customers who have flown with Delta,SWISS, andUnited Airlines from Seattle to Lisbon have to say. 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
7,964 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,649 reviews
Delta
8.0
Very good
7,964 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,838 reviews
Delta
8.0
Very good
7,964 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
654 reviews
Delta
8.0
Very good
7,964 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Turkish Airlines
7.3
Good
3,876 reviews
Delta
8.0
Very good
7,964 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Seattle to Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Seattle to Lisbon round-trip?

    Currently priced at C$ 744, Lufthansa will fly you from Seattle to Lisbon and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and British Airways - these airlines can fly you to your destination from C$ 751 and C$ 752, respectively. These flights start at 43% lower than the current average price 3 months from now.

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

    The cheapest airlines for a one-way flight from Seattle to Lisbon are Icelandair (C$ 469), United Airlines (C$ 491), and Aer Lingus (C$ 705).

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Seattle to Lisbon (average of C$ 482). Flying from Seattle to Lisbon in July is currently the most expensive (average of C$ 776). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Sintra
Costa da Caparica
Beja
Óbidos
Setúbal

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Top 2 airlines flying from Seattle to Lisbon

Discover the top 2 airlines that operate flights from Seattle to Lisbon. 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 629,999 searches. Data last updated 26 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapestC$ 722AverageC$ 759FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines flights
British AirwaysCheapestC$ 930AverageC$ 1,352FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Lisbon?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Lisbon from Seattle today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Seattle to Lisbon?

Cheapflights simply makes it quick and affordable to book flights from Seattle to Lisbon by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Seattle to Lisbon with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Lisbon flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Seattle to Lisbon become cheaper?

Yes, Cheapflights offers price alerts on Seattle to Lisbon flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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