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Cheap flights from Seattle to Lisbon from C$ 526

SEA — LIS
24 Oct — 31 Oct1
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 8/1111:08 a.m. -
1 stop13h 47m
Wed 18/1110:00 a.m. -
1 stop21h 00m
Deal found 24/9C$ 866
Tue 10/117:35 p.m. -
2 stops28h 35m
Tue 17/1110:15 a.m. -
3 stops42h 32m
Deal found 23/9C$ 874
Sun 1/117:15 a.m. -
2 stops19h 15m
Wed 11/1111:15 a.m. -
1 stop15h 51m
Deal found 24/9C$ 910
Tue 20/108:25 a.m. -
1 stop18h 05m
Wed 28/106:00 a.m. -
1 stop15h 00m
Deal found 22/9C$ 927
Mon 14/127:38 a.m. -
1 stop17h 22m
Thu 24/1211:15 a.m. -
1 stop18h 27m
Deal found 23/9C$ 933
Mon 16/117:35 p.m. -
2 stops29h 45m
Tue 1/1211:20 a.m. -
1 stop17h 39m
Deal found 22/9C$ 934
Mon 23/117:35 p.m. -
2 stops29h 45m
Tue 1/1211:20 a.m. -
1 stop17h 39m
Deal found 21/9C$ 936
Tue 20/101:30 p.m. -
1 stop25h 30m
Mon 26/106:35 p.m. -
1 stop24h 50m
Deal found 22/9C$ 937

Find flight deals from Seattle to Lisbon

Round-trip from

C$ 866

One-way from

C$ 526

Popular in

June

Cheapest in

January

Average price

C$ 1,381
Delta
  • Delta
  • 8/11-18/11
  • 2 total stops
  • 34h 47m total
  • Seattle to Lisbon
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Lufthansa
  • Lufthansa
  • 27/12-31/12
  • 1 total stop
  • 25h 00m total
  • Seattle to Lisbon
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (C$ 644 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 70 potential savings vs. average RT price).
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Average for round-trip flights in September 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

Fri 25/12

6:45 p.m.-9:50 a.m.

1 stop31h 05m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 607

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Thu 24/12

6:45 p.m.-10:00 a.m.

1 stop31h 15m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 607
Quickest round-trip

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sun 18/10

7:15 a.m.-8:00 a.m.

1 stop16h 45m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 652

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Wed 21/10

7:24 a.m.-10:45 a.m.

1 stop19h 21m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 652

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 26/10

6:30 a.m.-8:10 a.m.

1 stop18h 40m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 652

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sun 1/11

7:24 a.m.-8:55 a.m.

1 stop17h 31m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 652

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 17/10

11:14 p.m.-10:30 a.m.

1 stop27h 16m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 673

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 31/10

11:24 p.m.-8:10 a.m.

1 stop25h 46m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 675

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 14/11

11:17 p.m.-8:10 a.m.

1 stop24h 53m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 675

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 7/11

11:17 p.m.-8:10 a.m.

1 stop24h 53m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 675

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/9

Showing 1-10 of 23 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$ 647). Flying from Seattle to Lisbon in June is currently the most expensive (average of C$ 1,744). 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$ 1,102 and C$ 1,504 in November.
The cheapest round-trip price found within the last 5 days was C$ 866 on Delta (8 Nov-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 13h 15m. Delta provides one of the quickest options available for as low as C$ 927. 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$ 647). Flying from Seattle to Lisbon in June is currently the most expensive (average of C$ 1,744). 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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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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