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Cheap flights from Seattle to Lisbon from C$ 473

SEA — LIS
10 Dec — 17 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

Sun 13/128:09 a.m. -
1 stop17h 56m
Wed 23/125:00 a.m. -
1 stop15h 00m
Deal found 9/11C$ 1,110
Sun 13/127:38 a.m. -
1 stop17h 17m
Fri 25/125:00 a.m. -
1 stop14h 50m
Deal found 9/11C$ 1,112
Sun 13/128:09 a.m. -
2 stops16h 01m
Thu 24/125:00 a.m. -
1 stop15h 00m
Deal found 9/11C$ 1,116
Tue 8/122:05 p.m. -
2 stops32h 50m
Tue 15/1212:50 p.m. -
2 stops30h 54m
Deal found 5/11C$ 1,119
Wed 9/128:30 a.m. -
2 stops15h 40m
Tue 15/1212:50 p.m. -
2 stops30h 54m
Deal found 7/11C$ 1,120
Sat 12/1210:55 p.m. -
2 stops26h 00m
Fri 25/125:00 a.m. -
1 stop14h 50m
Deal found 9/11C$ 1,126
Sat 12/1211:25 p.m. -
1 stop24h 45m
Wed 23/125:00 a.m. -
1 stop15h 00m
Deal found 9/11C$ 1,127
Sat 12/1210:55 p.m. -
1 stop25h 05m
Tue 22/1211:30 a.m. -
1 stop32h 20m
Deal found 9/11C$ 1,129
Mon 23/117:38 a.m. -
1 stop17h 22m
Tue 8/125:00 a.m. -
1 stop14h 50m
Deal found 6/11C$ 1,178
Wed 2/123:25 p.m. -
1 stop15h 45m
Tue 15/125:00 a.m. -
1 stop14h 50m
Deal found 9/11C$ 1,181
Wed 18/1111:45 a.m. -
1 stop13h 15m
Mon 23/1111:30 a.m. -
1 stop32h 17m
Deal found 8/11C$ 1,182

Find flight deals from Seattle to Lisbon

Round-trip from

C$ 876

One-way from

C$ 473

Popular in

June

Cheapest in

January

Average price

C$ 1,175
Icelandair
  • Icelandair
  • 17/2-23/2
  • 2 total stops
  • 27h 40m total
  • Seattle to Lisbon
Search Deals
18/1-31/12
  • 18/1-31/12
  • 3 total stops
  • 46h 55m total
  • Seattle to Lisbon
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (C$ 578 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
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Cheapflights Fare Finder

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

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Route

Depart

Return

Price

Cheapest round-trip

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 18/1

2:35 p.m.-5:20 p.m.

2 stops18h 45m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 488
Quickest round-trip

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Wed 9/12

2:35 p.m.-12:50 p.m.

1 stop14h 15m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 511

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 6/3

10:35 p.m.-8:00 a.m.

2 stops25h 25m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 545

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 5/12

2:35 p.m.-12:50 p.m.

1 stop14h 15m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 581

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sun 7/3

7:32 p.m.-8:10 a.m.

3 stops28h 38m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 642

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 8/12

4:05 p.m.-5:30 p.m.

1 stop17h 25m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 828

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sun 29/11

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

1 stop15h 00m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 878

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Thu 19/11

7:05 p.m.-3:10 p.m.

1 stop36h 05m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 883

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Thu 3/12

7:05 p.m.-11:25 p.m.

1 stop20h 20m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 926

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 15/12

7:00 a.m.-8:10 a.m.

1 stop17h 10m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 941

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/11

Showing 1-10 of 21 resultsSorted by cheapest first
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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

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$ 711). Flying from Seattle to Lisbon in June is currently the most expensive (average of C$ 1,751). 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$ 938 and C$ 1,291 in February.
The cheapest round-trip price found within the last 5 days was C$ 876 on Icelandair (3 Feb-23 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 15h 05m. Delta provides one of the quickest options available for as low as C$ 1,117. 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$ 711). Flying from Seattle to Lisbon in June is currently the most expensive (average of C$ 1,751). 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

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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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