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Cheap flights from Seattle to Lisbon from C$ 472

SEA — LIS
18 Sep — 25 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

Tue 22/96:45 p.m. -
1 stop15h 05m
Tue 22/125:00 a.m. -
1 stop14h 50m
Deal found 17/8C$ 1,076
Sun 22/1111:15 p.m. -
1 stop24h 55m
Tue 1/1212:50 p.m. -
2 stops33h 47m
Deal found 17/8C$ 1,080
Wed 23/91:50 p.m. -
1 stop20h 55m
Tue 22/125:00 a.m. -
1 stop14h 50m
Deal found 17/8C$ 1,083
Sun 13/126:50 a.m. -
1 stop17h 20m
Wed 6/111:20 a.m. -
2 stops36h 44m
Deal found 17/8C$ 1,084
Sat 12/1211:15 p.m. -
2 stops25h 45m
Wed 6/15:30 a.m. -
1 stop17h 43m
Deal found 17/8C$ 1,085
Sat 12/1210:40 p.m. -
2 stops25h 30m
Wed 6/111:20 a.m. -
2 stops32h 20m
Deal found 17/8C$ 1,091
Tue 13/102:30 p.m. -
2 stops19h 20m
Wed 28/105:00 a.m. -
2 stops18h 37m
Deal found 19/8C$ 1,097
Sun 13/126:50 a.m. -
1 stop17h 20m
Thu 31/1210:55 a.m. -
1 stop18h 04m
Deal found 17/8C$ 1,102
Sun 13/123:25 p.m. -
1 stop18h 05m
Tue 5/112:25 p.m. -
1 stop34h 48m
Deal found 17/8C$ 1,104

Find flight deals from Seattle to Lisbon

Round-trip from

C$ 1,063

One-way from

C$ 472

Popular in

June

Cheapest in

January

Average price

C$ 1,303
Air Canada
  • Air Canada
  • 9/1-27/1
  • 2 total stops
  • 43h 04m total
  • Seattle to Lisbon
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11/10
  • 11/10
  • 3 total stops
  • 40h 45m total
  • Seattle to Lisbon
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (C$ 629 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 68 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 14/12

11:00 a.m.-3:10 p.m.

2 stops20h 10m

Lisbon Humberto Delgado

Fri 25/12

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

1 stop14h 50m

C$ 1,081

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 12/12

10:50 p.m.-8:00 a.m.

1 stop25h 10m

Lisbon Humberto Delgado

Tue 5/1

12:25 p.m.-3:13 p.m.

1 stop34h 48m

C$ 1,110

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 22/9

6:45 p.m.-5:50 p.m.

1 stop15h 05m

Lisbon Humberto Delgado

Fri 2/10

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

1 stop19h 35m

C$ 1,117

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 15/12

7:15 a.m.-9:00 a.m.

2 stops17h 45m

Lisbon Humberto Delgado

Wed 6/1

5:30 a.m.-3:13 p.m.

1 stop17h 43m

C$ 1,127

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 14/12

8:00 a.m.-10:20 a.m.

1 stop18h 20m

Lisbon Humberto Delgado

Thu 31/12

10:55 a.m.-8:59 p.m.

1 stop18h 04m

C$ 1,144
Quickest round-trip

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$ 1,151

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 22/9

11:50 a.m.-2:55 p.m.

2 stops19h 05m

Lisbon Humberto Delgado

Sat 10/10

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

1 stop19h 35m

C$ 1,206

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Wed 23/9

11:00 p.m.-10:30 a.m.

2 stops27h 30m

Lisbon Humberto Delgado

Tue 22/12

12:20 p.m.-9:49 a.m.

2 stops29h 29m

C$ 1,216
Cheapest one-way

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 17/11

6:45 p.m.-12:05 p.m.

1 stop33h 20m

C$ 530

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Wed 25/11

8:09 a.m.-8:10 a.m.

2 stops16h 01m

C$ 539

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/8

Showing 1-10 of 16 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$ 668). Flying from Seattle to Lisbon in June is currently the most expensive (average of C$ 1,714). 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$ 1,077 and C$ 1,686 in January.
The cheapest round-trip price found within the last 5 days was C$ 1,063 on Multiple Airlines (9 Jan-27 Jan).

Related info for your journey

  • How long is the flight from Seattle to Lisbon?

    A quick flight from Seattle to Lisbon can take about 17h. Delta provides one of the quickest options available for as low as C$ 1,083. 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$ 668). Flying from Seattle to Lisbon in June is currently the most expensive (average of C$ 1,714). 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

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

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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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