Cheap flights from Seattle to Lisbon

Round-trip
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Seattle (SEA)
Lisbon (LIS)
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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
C$ 616 - C$ 1,038
LIS
Temperature
11 - 23 °C
LIS
Precipitation
6 - 122 mm

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

C$ 761

From Seattle/Tacoma Intl to Lisbon Humberto Delgado

One-way from

C$ 633

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.
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 morning, which can drop the price by up to 17% versus a flight in the evening.

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

Flights from Seattle to Lisbon lean towards being more expensive in June. Prices are generally better when you fly from Seattle to Lisbon in November, with the cheapest ticket starting at C$ 598.

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

Leaving on a Friday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 48% on the overall cost on flights from Seattle to Lisbon.

How far in advance should I book a flight from Seattle to Lisbon?

Travellers have found it’s best to book a flight 48 days in advance to save up to 66% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 48 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Seattle to Lisbon 1-2 weeks in advance for as low as C$ 1,300, or C$ 1,625 for flights within the next 24 hours.

Cheap flights from Seattle to Lisbon in October, November 2021

The best prices found for SEA to LIS flights for October, November
29 Oct - 2 Nov
C$ 678pp
SEA
Seattle/Tacoma Intl
United Airlines
 
1 STOP
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
United Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
5 Nov - 12 Nov
C$ 685pp
SEA
Seattle/Tacoma Intl
United Airlines
 
1 STOP
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
United Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
29 Oct - 7 Nov
C$ 686pp
SEA
Seattle/Tacoma Intl
United Airlines
 
1 STOP
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
United Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl

Seattle/Tacoma Intl to Lisbon 2021 flight deals

Cheap flights to Lisbon from Seattle found for this year
29 Oct - 2 Nov
C$ 678pp
SEA
Seattle/Tacoma Intl
United Airlines
 
1 STOP
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
United Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
5 Nov - 12 Nov
C$ 685pp
SEA
Seattle/Tacoma Intl
United Airlines
 
1 STOP
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
United Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
29 Oct - 5 Nov
C$ 686pp
SEA
Seattle/Tacoma Intl
United Airlines
   
2 STOPS
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
United Airlines
   
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
26 Oct - 7 Nov
C$ 895pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
28 Oct - 6 Nov
C$ 1,026pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
28 Oct - 8 Nov
C$ 1,037pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
LIS
Lisbon Humberto Delgado
LIS
Lisbon Humberto Delgado
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl

One-way flights to Humberto Delgado from Seattle

The cheapest one-way flights from Seattle to Lisbon
7:00 a.m. - 12:35 p.m.
Delta
2 stops
21h 35m
SEA - LIS
Delta
C$ 633
Delta
8:20 a.m. - 6:10 p.m.
KLM
1 stop
25h 50m
SEA - LIS
KLM
C$ 635
KLM
9:00 a.m. - 7:20 a.m.
TAP AIR PORTUGAL
1 stop
14h 20m
SEA - LIS
TAP AIR PORTUGAL
C$ 724

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 changes due to COVID-19?

Some of our airline partners flying from Seattle/Tacoma Intl to Lisbon Humberto Delgado have new flexible policies in place due to COVID-19. British Airways is one of the carriers where you may find flexible change policies. You can use our site to filter for airlines like British Airways with this kind of flexibility.

Can I find flights from Seattle to Lisbon for under C$ 700 on Cheapflights?

Yes, there are multiple flights from Seattle to Lisbon for under C$ 700. The cheapest flight booked recently is on United Airlines for just C$ 678, but on average you can expect to pay C$ 701.

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

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

How popular is this Seattle to Lisbon flight route?

The Seattle/Tacoma Intl to Lisbon Humberto Delgado flight path was viewed by 24 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

Currently priced at C$ 678, United Airlines will fly you from Seattle to Lisbon and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Lufthansa and American Airlines - these airlines can fly you to your destination from C$ 696 and C$ 699, respectively. These flights start at 33% lower than the current average price 3 months from now.

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 Delta (C$ 628), KLM (C$ 635), and TAP AIR PORTUGAL (C$ 640).

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

American Airlines, British Airways and Lufthansa are the most popular airlines when flying from Seattle to Lisbon.

What are the cheapest flights from Seattle to Lisbon?

Looking at all options, your cheapest flight can be booked for C$ 716. While the most popular route (Seattle/Tacoma Intl - Lisbon Humberto Delgado) can be booked for C$ 699 on average our data indicates C$ 763 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 48 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) test taken 72 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
C$ 1 = €0.70
Average temperature for October in Lisbon
23.0 °C

Airports servicing Seattle

Airports servicing Lisbon

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