Find flights
When to book
FAQs

Cheap flights from Seattle to Lisbon from C$ 567

SEA — LIS
5 Dec — 12 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Lisbon

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Lisbon

Tue 29/124:05 p.m. -
1 stop17h 25m
Tue 12/111:30 a.m. -
1 stop32h 20m
Deal found 2/11C$ 1,099
Tue 29/1211:44 p.m. -
2 stops23h 11m
Thu 14/15:00 a.m. -
1 stop15h 00m
Deal found 2/11C$ 1,103
Wed 30/125:20 a.m. -
2 stops25h 50m
Tue 12/111:30 a.m. -
1 stop32h 20m
Deal found 2/11C$ 1,105
Wed 9/128:30 a.m. -
2 stops15h 40m
Tue 15/1212:20 p.m. -
2 stops19h 24m
Deal found 31/10C$ 1,112
Wed 30/125:00 a.m. -
2 stops21h 20m
Wed 13/111:20 a.m. -
2 stops32h 27m
Deal found 2/11C$ 1,114
Mon 23/117:38 a.m. -
1 stop17h 22m
Tue 8/125:00 a.m. -
1 stop14h 50m
Deal found 4/11C$ 1,165
Sun 8/116:15 a.m. -
1 stop17h 55m
Wed 18/115:00 a.m. -
1 stop15h 00m
Deal found 3/11C$ 1,167
Fri 25/123:25 p.m. -
1 stop15h 45m
Tue 26/15:00 a.m. -
1 stop14h 50m
Deal found 3/11C$ 1,169
Sun 29/112:50 p.m. -
1 stop14h 40m
Sun 6/125:00 a.m. -
1 stop15h 00m
Deal found 31/10C$ 1,170
Mon 23/118:09 a.m. -
2 stops16h 01m
Tue 8/126:05 a.m. -
2 stops22h 56m
Deal found 4/11C$ 1,173
Sun 8/1111:50 a.m. -
2 stops21h 40m
Wed 18/115:00 a.m. -
1 stop14h 47m
Deal found 4/11C$ 1,174

Find flight deals from Seattle to Lisbon

Round-trip from

C$ 957

One-way from

C$ 567

Popular in

June

Cheapest in

January

Average price

C$ 1,163
Icelandair
  • Icelandair
  • 3/2-16/2
  • 2 total stops
  • 27h 40m total
  • Seattle to Lisbon
Search Deals
United Airlines
  • United Airlines
  • 10/4-31/12
  • 1 total stop
  • 25h 35m total
  • Seattle to Lisbon
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (C$ 577 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 63 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 10/4

10:45 p.m.-8:20 a.m.

1 stop25h 35m

Lisbon Humberto Delgado

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 567

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 5/1

2:30 p.m.-7:40 p.m.

3 stops21h 10m

Lisbon Humberto Delgado

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 644

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Thu 7/1

2:30 p.m.-10:10 p.m.

3 stops23h 40m

Lisbon Humberto Delgado

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 656

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 5/1

7:31 a.m.-8:00 a.m.

1 stop16h 29m

Lisbon Humberto Delgado

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 817
Quickest round-trip

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sun 24/1

3:25 p.m.-3:10 p.m.

1 stop15h 45m

Lisbon Humberto Delgado

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 820

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Fri 1/1

5:00 a.m.-10:20 a.m.

2 stops21h 20m

Lisbon Humberto Delgado

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 891

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 23/11

6:00 a.m.-8:00 a.m.

2 stops18h 00m

Lisbon Humberto Delgado

Tue 8/12

5:00 a.m.-11:50 a.m.

1 stop14h 50m

C$ 1,165

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 1/2

3:30 p.m.-3:10 p.m.

1 stop15h 40m

Lisbon Humberto Delgado

Sun 7/2

5:00 a.m.-11:50 a.m.

1 stop14h 50m

C$ 1,176

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 13/4

12:15 p.m.-9:20 a.m.

3 stops37h 05m

Lisbon Humberto Delgado

Sun 18/4

11:25 a.m.-9:05 p.m.

2 stops41h 40m

C$ 1,246

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Wed 17/3

5:00 a.m.-6:55 a.m.

2 stops18h 55m

Lisbon Humberto Delgado

Sat 27/3

11:20 a.m.-8:10 p.m.

3 stops39h 50m

C$ 1,253

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/11

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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

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?

Booking 80 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$ 694). Flying from Seattle to Lisbon in June is currently the most expensive (average of C$ 1,725). 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.

How much does it cost to fly round-trip from Seattle to Lisbon?

Airfare is typical for this route at the moment.

Seattle to Lisbon flights typically cost between C$ 929 and C$ 1,282 in February.
The cheapest round-trip price found within the last 5 days was C$ 957 on Icelandair (3 Feb-16 Feb).

Related info for your journey

  • How long is the flight from Seattle to Lisbon?

    A quick flight from Seattle to Lisbon can take about 18h. Delta provides one of the quickest options available for as low as C$ 1,165. Seattle and Lisbon are separated by a distance of 8367 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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$ 694). Flying from Seattle to Lisbon in June is currently the most expensive (average of C$ 1,725). 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 Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Sintra
Fátima
Óbidos
Estoril
Costa da Caparica
Setúbal

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.