Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from Seattle to Lisbon
The cheapest flights right now
Seattle – Lisbon
Outbound – Nov 23, 2026
1 stop
17h 40m EWR
Return – Dec 8, 2026
1 stop
16h 41m IAD
$789
3 days ago
Seattle – Lisbon
Outbound – Nov 23, 2026
2 stops
15h 15m DTW
BOS
Return – Dec 8, 2026
1 stop
14h 50m AMS
$785
yesterday
Seattle – Lisbon
Outbound – Nov 23, 2026
1 stop
16h 5m AMS
Return – Dec 8, 2026
1 stop
14h 50m AMS
$784
yesterday
Seattle – Lisbon
Outbound – Nov 23, 2026
1 stop
16h 5m AMS
Return – Dec 8, 2026
1 stop
14h 50m AMS
$783
3 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$564
Average price of a round trip
$653
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
20h24
A flight from Seattle to Lisbon takes on average 20h24.
Best time
November
According to user searches, the ideal month to go to Lisbon is November.
Tips for finding a cheap flight from Seattle to Lisbon
Check out our tips for booking your flight to Lisbon (Portugal) from Seattle (USA) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is November, with an average flight ticket price of $632 (calculation over the last two years). The most touristic season corresponds to the months of November, October and June.
For the cheapest flights, it is advisable to buy your ticket at least 47 days before the departure date.
The airline offering the cheapest flight tickets is Icelandair. A ticket from the airline Icelandair to Lisbon costs on average $692.
The airlines that offer the most flights are .
Price of flight tickets from Seattle to Lisbon
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from $564 to $1241
- The average price of a flight ticket is about $653
- Prices are lowest for stays in the month of November
- The month in which booking a ticket is cheaper is: November
info departure city :
Seattle, USA
airports :
Kenmore Air Harbor Spb. (LKE)
Seattle-Tacoma International Airport (SEA)
Renton Municipal Airport (RNT)
King County International Airport (BFI)
local time :
Seattle is a city in the country USA, the time zone is [[timezone]]. In Seattle, it is currently {fromLocalTime}, the temperature is on average 17°C, with a minimum of 11°C and a maximum of 24°C.
The city of Seattle (SEA) has 4 airport(s): Kenmore Air Harbor Spb., Seattle-Tacoma, Renton and King County
destination info :
Lisbon, Portugal
airport :
Lisbon-Humberto Delgado Airport (LIS)
local time :
Lisbon is in the country Portugal, the time zone is [[timezone]]. In Lisbon, it is currently {toLocalTime}, the temperature is on average 20°C, with a minimum of 18°C and a maximum of 23°C.
The city of Lisbon has 1 airport(s): Lisbon-Humberto Delgado
Useful info about Lisbon
What is the least touristic period to go to Lisbon?
If you want to visit Lisbon during the least touristic period, choose the month of November.
What is the most popular time to travel to Lisbon?
In Lisbon, the most popular month is November. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from Seattle to Lisbon?
According to our data, it is recommended to book your flight 47 days before your departure. If you book your flight ticket 7 weeks before your departure, you may find a price below average. The cheapest day to book a flight from Seattle to Lisbon is Monday.
What are the arrival and destination airports when traveling between Seattle and Lisbon?
When you leave, you can leave from Seattle-Tacoma, and you will arrive at Lisbon-Humberto Delgado.
How to reach Seattle airport from the city centre?
The airport Kenmore Air Harbor Spb. is located 3 km, Seattle-Tacoma is located 16 km, Renton is located 16 km or King County is located 8 km from the city centre. You can access it by using public transportation, taking a taxi, or renting a car.
Are there other means of transportation to go from Seattle to Lisbon?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between Seattle and Lisbon?
In summer, the average temperature is 21°C in Lisbon and 18°C in Seattle. The average rainfall in summer is 6 mm in Lisbon and 38 mm in Seattle. In summer, it is warmer in Lisbon and it rains less in Lisbon. In winter, it is colder in Lisbon and it rains more in Seattle.
