Cheap flights from Seattle (SEA) to Lisbon (LIS)

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The best prices from Seattle/Tacoma Intl to Lisbon Humberto Delgado are usually found in November or February, booked 47 days in advance, depart on a Wednesday or Monday and return on a Thursday

How to find the cheapest flight from
Seattle (SEA) to Lisbon (LIS)

All the information you need to plan the best SEA to LIS flight in 2021: compare Seattle to Lisbon flight prices with the expected peak season, weather and rainfall in Lisbon.
SEA - LIS
Price
$616 - $1,038
LIS
Temperature
51.8 - 73.4 °F
LIS
Precipitation
0.2 - 4.8 inches

Popular in

June

High demand for flights, 20% potential price rise

Cheapest in

November

Best time to find cheap flights, 26% potential price drop

Round-trip from

$616

From Seattle/Tacoma Intl to Lisbon Humberto Delgado

One-way from

$378

One-way flight from Seattle/Tacoma Intl to Lisbon Humberto Delgado

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
How far in advance should I book a flight from Seattle to Lisbon?

To save up to 66% on this flight, we recommend booking at least 48 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Seattle to Lisbon from $1,052 1-2 weeks out and tickets from $1,315 for flights departing within the next 72 hours.

What is the cheapest day to fly round-trip from Seattle to Lisbon?

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

When is the cheapest time to fly from Seattle to Lisbon (SEA - LIS)?

When flying from Seattle to Lisbon, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 13% versus a flight at noon.

What is the cheapest month to fly from Seattle to Lisbon?

November can be a great time to fly to Lisbon from Seattle with a flight ticket averaging about $829. Cheapflights users have found deals in the month of November for as cheap as $484. The most expensive prices can be found in the month of June.

Cheap flights from Seattle to Lisbon in December, January 2022

The best prices found for SEA to LIS flights for December, January
12 Jan - 19 Jan
$529pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
KLM
 
1 STOP
SEA
Seattle/Tacoma Intl
12 Jan - 19 Jan
$533pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
KLM
 
1 STOP
SEA
Seattle/Tacoma Intl
6 Jan - 13 Jan
$539pp
SEA
Seattle/Tacoma Intl
KLM
   
2 STOPS
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
KLM
 
1 STOP
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to Lisbon 2022 flight deals

Cheap flights to Lisbon from Seattle found for this year
31 Dec - 8 Jan
$582pp
SEA
Seattle/Tacoma Intl
Air France
 
1 STOP
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
Air France
 
1 STOP
SEA
Seattle/Tacoma Intl
31 Dec - 8 Jan
$592pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
Air France
 
1 STOP
SEA
Seattle/Tacoma Intl
29 Dec - 7 Jan
$627pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
KLM
   
2 STOPS
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to Lisbon

Late deals on round-trip flights to Lisbon from Seattle, departing today and this week
13 Dec - 23 Dec
$868pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
13 Dec - 20 Dec
$988pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
14 Dec - 21 Dec
$1,157pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

One-way flights to Humberto Delgado from Seattle

The cheapest one-way flights from Seattle to Lisbon
12:30 am - 6:50 am
Iberia
2 Stops
22h 20m
SEA - LIS
Iberia
$378
SnapTravelAir
1:35 pm - 4:55 pm
British Airways
1 Stop
19h 20m
SEA - LIS
British Airways
7:29 pm - 1:05 pm
American Airlines
2 Stops
33h 36m
SEA - LIS
American Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">Lisbon</span> flights.

Flight FAQs

From Seattle to Lisbon

Which airlines flying from Seattle/Tacoma Intl to Lisbon Humberto Delgado have flexible cancellations due to COVID-19?

Delta, Aer Lingus, and Air France are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Seattle to Lisbon for under $600 on Cheapflights?

Yes, there are multiple flights from Seattle to Lisbon for under $600. The cheapest flight booked recently is on Multiple Airlines for just $529, but on average you can expect to pay $548.

Are there last-minute flights available from Seattle to Lisbon for under $900?

There are currently 20+ open flights from Seattle to Lisbon within the next 7 days for less than $900.

How popular is this Seattle to Lisbon flight route?

Within the past month, 29 users have taken a look at flights from Seattle/Tacoma Intl to Lisbon Humberto Delgado.

What are the cheapest airlines flying from Seattle to Lisbon round-trip?

Our cheapest airline available from Seattle to Lisbon is KLM. Our recent data shows that you can find tickets from as low as $539 on this airline. Additional options worth looking into are Iberia and Air Canada, starting at $540 and $546 round-trip. KLM is currently priced 34% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Seattle to Lisbon one-way?

The cheapest airlines for a one-way flight from Seattle to Lisbon are Iberia ($378), TAP AIR PORTUGAL ($486), and British Airways ($510).

What are the cheapest flights from Seattle to Lisbon?

Looking for the cheapest flight from Seattle to Lisbon? While on average our users pay $1,397, our data indicates the cheapest price to be $489. The most popular route (Seattle/Tacoma Intl - Lisbon Humberto Delgado), is priced around $554.

What are the most popular airlines that fly from Seattle to Lisbon?

Consider American Airlines, Air Canada or Air France when booking your flight. These represent the most popular airlines when flying from Seattle to Lisbon.

COVID Restrictions

View COVID Travel Restrictions for Lisbon, Portugal

Do I need a COVID test to fly to Lisbon from Seattle?

Information is based on travel restrictions from Seattle/Tacoma Intl to Lisbon Humberto Delgado

Most visitors from Seattle/Tacoma Intl need to provide a negative COVID-19 test result and/or quarantine to enter Lisbon Humberto Delgado.

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 for RT-PCR (NAAT) and 24 Antigen (quick-test) hours before departing to Lisbon Humberto Delgado.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Lisbon Humberto Delgado.

Documents
Health declaration for Madeira - Travelers must complete and submit it 12-48 hours before departure. This will generate a QR code which must be presented upon arrival.


Do I need a test to fly back to Seattle from Lisbon?

Returning to Seattle/Tacoma Intl from Lisbon Humberto Delgado

COVID-19 testing requirements
Visitors from Lisbon Humberto Delgado must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Lisbon Humberto Delgado are not required to quarantine after entering Seattle/Tacoma Intl.

Hide COVID Travel Restrictions for Lisbon, Portugal

Destination information for Lisbon

Things to know before you go - useful duration and weather info for your trip from Seattle to Lisbon.
Today's exchange rate
$1 = €0.89
Average temperature for December in Lisbon
59.0 °F

Airports servicing Seattle

Airports servicing Lisbon

Top 9 airlines flying from Seattle/Tacoma Intl to Lisbon Humberto Delgado

Airline Cheapest Average Flexibility On-time COVID-19 safety
Air Canada
$453 $897 No cancel fee 67%
Lufthansa
$517 $1,038 No cancel fee 76%
British Airways
$527 $953 No cancel fee 70%
KLM
$563 $948 No cancel fee 75%
United Airlines
$573 $1,076 No cancel fee 69%
Air France
$576 $824 No cancel fee 77%
American Airlines
$579 $1,088 No cancel fee 71%
Aer Lingus
$585 $868 No cancel fee N/A
Delta
$593 $1,043 No cancel fee N/A
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