Find flights
When to book
FAQs

Cheap flights from Seattle to Lisbon from C$ 405

SEA — LIS
23 Sep — 30 Sep1
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

Sat 31/1011:50 a.m. -
1 stop37h 10m
Wed 18/115:00 a.m. -
1 stop14h 47m
Deal found 19/8C$ 1,042
Fri 6/1110:59 p.m. -
2 stops34h 31m
Fri 20/115:00 a.m. -
1 stop14h 47m
Deal found 19/8C$ 1,048
Tue 22/96:45 p.m. -
1 stop15h 05m
Tue 22/125:00 a.m. -
1 stop14h 50m
Deal found 20/8C$ 1,067
Mon 19/107:00 a.m. -
1 stop17h 20m
Thu 29/105:00 a.m. -
1 stop15h 00m
Deal found 23/8C$ 1,068
Sun 18/107:00 a.m. -
1 stop17h 20m
Fri 30/106:00 a.m. -
1 stop15h 00m
Deal found 23/8C$ 1,070
Wed 16/127:45 a.m. -
1 stop17h 10m
Thu 24/125:00 a.m. -
1 stop15h 00m
Deal found 22/8C$ 1,071
Mon 14/1211:18 a.m. -
2 stops19h 52m
Fri 25/125:00 a.m. -
1 stop14h 50m
Deal found 24/8C$ 1,074
Tue 15/128:25 a.m. -
2 stops16h 35m
Thu 24/125:00 a.m. -
1 stop14h 50m
Deal found 22/8C$ 1,075
Sun 13/129:15 a.m. -
1 stop15h 50m
Mon 21/123:45 p.m. -
1 stop27h 40m
Deal found 24/8C$ 1,078
Sun 22/1111:15 p.m. -
2 stops25h 45m
Mon 30/1111:30 a.m. -
1 stop32h 20m
Deal found 22/8C$ 1,082

Find flight deals from Seattle to Lisbon

Round-trip from

C$ 1,042

One-way from

C$ 405

Popular in

June

Cheapest in

January

Average price

C$ 1,282
Delta
  • Delta
  • 31/10-18/11
  • 2 total stops
  • 51h 57m total
  • Seattle to Lisbon
Search Deals
29/10
  • 29/10
  • 3 total stops
  • 42h 05m total
  • Seattle to Lisbon
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (C$ 614 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 67 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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

Mon 5/10

6:00 a.m.-10:55 a.m.

2 stops20h 55m

Lisbon Humberto Delgado

Thu 15/10

5:00 a.m.-11:52 a.m.

1 stop14h 52m

C$ 1,122

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 22/9

7:15 a.m.-10:55 a.m.

2 stops19h 40m

Lisbon Humberto Delgado

Fri 2/10

5:35 a.m.-5:47 p.m.

1 stop20h 12m

C$ 1,130

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 5/10

6:00 a.m.-10:55 a.m.

2 stops20h 55m

Lisbon Humberto Delgado

Tue 13/10

5:00 a.m.-4:37 p.m.

2 stops19h 37m

C$ 1,137

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sun 17/1

6:50 a.m.-8:10 a.m.

1 stop17h 20m

Lisbon Humberto Delgado

Thu 21/1

5:00 a.m.-12:00 p.m.

1 stop15h 00m

C$ 1,141

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Fri 16/10

10:42 a.m.-11:05 a.m.

2 stops16h 23m

Lisbon Humberto Delgado

Fri 23/10

5:05 a.m.-12:20 p.m.

1 stop15h 15m

C$ 1,143

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 22/9

7:15 a.m.-10:55 a.m.

2 stops19h 40m

Lisbon Humberto Delgado

Tue 22/12

5:30 a.m.-6:46 p.m.

2 stops21h 16m

C$ 1,180
Quickest round-trip

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Fri 9/10

6:40 p.m.-5:50 p.m.

1 stop15h 10m

Lisbon Humberto Delgado

Fri 16/10

5:35 a.m.-11:15 a.m.

1 stop13h 40m

C$ 1,202

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 22/9

7:15 a.m.-10:55 a.m.

2 stops19h 40m

Lisbon Humberto Delgado

Sat 10/10

5:00 a.m.-11:52 a.m.

1 stop14h 52m

C$ 1,205

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 29/9

2:30 p.m.-5:50 p.m.

2 stops19h 20m

Lisbon Humberto Delgado

Sun 11/10

5:35 a.m.-11:15 a.m.

1 stop13h 40m

C$ 1,207

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Fri 18/9

5:45 p.m.-6:45 p.m.

1 stop17h 00m

Lisbon Humberto Delgado

Fri 25/9

5:00 a.m.-4:35 p.m.

1 stop19h 35m

C$ 1,274

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/8

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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$ 662). Flying from Seattle to Lisbon in June is currently the most expensive (average of C$ 1,700). 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 below average for this route at the moment.

Seattle to Lisbon flights typically cost between C$ 1,073 and C$ 1,587 in October.
The cheapest round-trip price found within the last 5 days was C$ 1,042 on Delta (31 Oct-18 Nov).

Related info for your journey

  • How long is the flight from Seattle to Lisbon?

    A quick flight from Seattle to Lisbon can take about 20h 59m. Delta provides one of the quickest options available for as low as C$ 1,089. Seattle and Lisbon are separated by a distance of 8367 km.

  • 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$ 662). Flying from Seattle to Lisbon in June is currently the most expensive (average of C$ 1,700). 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
Fátima
Sintra
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.