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Cheap flights from Seattle to Lisbon from C$ 543

SEA — LIS
29 Nov — 6 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

Mon 30/112:35 p.m. -
1 stop14h 10m
Tue 8/121:55 p.m. -
1 stop35h 05m
Deal found 29/10C$ 943
Sat 28/112:35 p.m. -
1 stop14h 15m
Tue 8/121:55 p.m. -
1 stop35h 05m
Deal found 29/10C$ 1,013
Mon 23/112:35 p.m. -
1 stop14h 10m
Sun 6/122:00 p.m. -
1 stop35h 00m
Deal found 26/10C$ 1,067
Tue 1/128:09 a.m. -
1 stop17h 56m
Wed 9/125:00 a.m. -
1 stop15h 00m
Deal found 29/10C$ 1,099
Wed 25/113:25 p.m. -
1 stop15h 45m
Fri 4/125:00 a.m. -
1 stop14h 50m
Deal found 26/10C$ 1,101
Sun 6/128:09 a.m. -
1 stop17h 56m
Fri 18/126:00 a.m. -
1 stop15h 00m
Deal found 27/10C$ 1,103
Tue 29/1211:44 p.m. -
2 stops23h 11m
Thu 14/15:00 a.m. -
1 stop15h 00m
Deal found 29/10C$ 1,105
Wed 30/125:00 a.m. -
2 stops21h 20m
Thu 14/15:00 a.m. -
1 stop15h 00m
Deal found 29/10C$ 1,106
Mon 23/117:15 a.m. -
2 stops26h 15m
Wed 2/1211:30 a.m. -
1 stop32h 20m
Deal found 26/10C$ 1,108
Mon 28/1211:44 p.m. -
2 stops24h 26m
Wed 13/16:00 a.m. -
1 stop15h 00m
Deal found 29/10C$ 1,109
Sun 27/1210:50 p.m. -
2 stops26h 30m
Thu 14/15:00 a.m. -
1 stop15h 00m
Deal found 29/10C$ 1,112
Wed 9/128:30 a.m. -
2 stops15h 40m
Tue 15/1212:20 p.m. -
2 stops19h 24m
Deal found 30/10C$ 1,113

Find flight deals from Seattle to Lisbon

Round-trip from

C$ 943

One-way from

C$ 543

Popular in

June

Cheapest in

January

Average price

C$ 1,290
Icelandair
  • Icelandair
  • 30/11-8/12
  • 2 total stops
  • 49h 15m total
  • Seattle to Lisbon
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British Airways
  • British Airways
  • 21/2-31/12
  • 1 total stop
  • 31h 00m total
  • Seattle to Lisbon
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (C$ 576 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 October 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

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Price

Cheapest round-trip

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 22/2

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

1 stop33h 20m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 543

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sun 21/2

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

1 stop31h 00m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 543

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 23/2

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$ 543

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 27/2

7:42 p.m.-8:10 a.m.

2 stops28h 28m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 550

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 20/2

7:42 p.m.-8:10 a.m.

3 stops28h 28m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 558

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 20/2

9:55 p.m.-8:00 a.m.

1 stop26h 05m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 565
Quickest round-trip

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$ 613

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Fri 26/2

6:45 p.m.-5:55 p.m.

1 stop15h 10m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 613

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Wed 23/12

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

2 stops25h 20m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 892

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Wed 23/12

11:25 p.m.-8:00 a.m.

1 stop24h 35m

Lisbon Humberto Delgado

Wed 31/12

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

Nonstop0h 00m

C$ 922

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/10

Showing 1-10 of 22 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$ 688). Flying from Seattle to Lisbon in June is currently the most expensive (average of C$ 1,727). 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$ 908 and C$ 1,284 in November.
The cheapest round-trip price found within the last 5 days was C$ 943 on Icelandair (30 Nov-8 Dec).

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 40m. United Airlines provides one of the quickest options available for as low as C$ 1,171. 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$ 688). Flying from Seattle to Lisbon in June is currently the most expensive (average of C$ 1,727). 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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