£283 Cheap Flights from Seattle (SEA) to Lisbon (LIS)

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Flight 1

Popular airlines from Seattle-Tacoma International Airport (SEA) to Humberto Delgado Airport (LIS)

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

Prices were available within the past 7 days and start at £283 for one-way flights and £609 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 26 Oct - Thu, 12 Nov
SEA
Seattle
LIS
Lisbon
£609 Return, found 17 hours ago
£609
Return
found 17 hours ago
Select Delta flight, departing Mon, 26 Oct from Seattle to Lisbon, returning Thu, 12 Nov, priced at £609 found 17 hours ago
Alaska Airlines
Sun, 20 Sept - Thu, 8 Oct
SEA
Seattle
LIS
Lisbon
£613 Return, found 17 hours ago
£613
Return
found 17 hours ago
Select Alaska Airlines flight, departing Sun, 20 Sept from Seattle to Lisbon, returning Thu, 8 Oct, priced at £613 found 17 hours ago
Air France
Mon, 9 Nov - Mon, 16 Nov
SEA
Seattle
LIS
Lisbon
£615 Return, found 22 hours ago
£615
Return
found 22 hours ago
Select Air France flight, departing Mon, 9 Nov from Seattle to Lisbon, returning Mon, 16 Nov, priced at £615 found 22 hours ago
KLM
Wed, 11 Nov - Wed, 18 Nov
SEA
Seattle
LIS
Lisbon
£616 Return, found 22 hours ago
£616
Return
found 22 hours ago
Select KLM flight, departing Wed, 11 Nov from Seattle to Lisbon, returning Wed, 18 Nov, priced at £616 found 22 hours ago
British Airways
Wed, 11 Nov - Wed, 18 Nov
SEA
Seattle
LIS
Lisbon
£619 Return, found 22 hours ago
£619
Return
found 22 hours ago
Select British Airways flight, departing Wed, 11 Nov from Seattle to Lisbon, returning Wed, 18 Nov, priced at £619 found 22 hours ago
Virgin Atlantic
Wed, 11 Nov - Wed, 18 Nov
SEA
Seattle
LIS
Lisbon
£621 Return, found 22 hours ago
£621
Return
found 22 hours ago
Select Virgin Atlantic flight, departing Wed, 11 Nov from Seattle to Lisbon, returning Wed, 18 Nov, priced at £621 found 22 hours ago
Finnair
Tue, 3 Nov - Tue, 10 Nov
SEA
Seattle
LIS
Lisbon
£629 Return, found 22 hours ago
£629
Return
found 22 hours ago
Select Finnair flight, departing Tue, 3 Nov from Seattle to Lisbon, returning Tue, 10 Nov, priced at £629 found 22 hours ago
Turkish Airlines
Mon, 28 Sept - Tue, 6 Oct
SEA
Seattle
LIS
Lisbon
£630 Return, found 5 days ago
£630
Return
found 5 days ago
Select Turkish Airlines flight, departing Mon, 28 Sept from Seattle to Lisbon, returning Tue, 6 Oct, priced at £630 found 5 days ago
Iberia
Tue, 10 Nov - Tue, 17 Nov
SEA
Seattle
LIS
Lisbon
£636 Return, found 22 hours ago
£636
Return
found 22 hours ago
Select Iberia flight, departing Tue, 10 Nov from Seattle to Lisbon, returning Tue, 17 Nov, priced at £636 found 22 hours ago
Aer Lingus
Sat, 9 May - Wed, 13 May
SEA
Seattle
LIS
Lisbon
£643 Return, found 4 days ago
£643
Return
found 4 days ago
Select Aer Lingus flight, departing Sat, 9 May from Seattle to Lisbon, returning Wed, 13 May, priced at £643 found 4 days ago

Alternative airports near Lisbon

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Humberto Delgado LIS. Cheapest option available. Flights from £829
LIS
Humberto Delgado
Cheapest
Flights from £829

Find the cheapest month to fly from Seattle (SEA) to Lisbon (LIS)

November is typically the cheapest month to fly

From £383 - £627 per traveller.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado) cost?
One-way flights typically cost between £705 and £4,840 and return flights often range between £1,206 and £7,590. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado)?
There are approximately 95 connecting flights per day from Seattle - Tacoma Intl. (SEA) to Humberto Delgado (LIS). Some common connection points include O'Hare Intl. (ORD), Vancouver Intl. (YVR), and Logan Intl. (BOS).
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to Humberto Delgado (LIS) typically departs at approximately 12:05 AM local time, operated by American Airlines. This is a seasonal service active in February. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado)?
If you're flying from Seattle - Tacoma Intl. (SEA) to Lisbon (LIS), you'll typically find the most flights on a Saturday, with around 90 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Delta Air Lines, United Airlines, and American Airlines. Looking at the overall week, Saturdays offer notably more flight options compared to other days, making it a great day to consider for your departure.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to Humberto Delgado (LIS) are in the early morning, from 6am to 9am. Approximately 27% of passengers prefer this time window. Many major carriers, including United Airlines and Delta Air Lines, offer flights during this window. This timing works well because you can get an early start to your journey and arrive at your destination with plenty of time to settle in.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado)?
Flights from SEA to LIS with one stop typically take around 16 hours 50 minutes, covering approximately 5,203 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado)?
Select the "Business class" and "First class" filters when looking for SEA to LIS flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Lisbon from Seattle - Tacoma Intl. (SEA)?
From Seattle - Tacoma Intl. (SEA), you can fly directly into Humberto Delgado (LIS) to reach Lisbon. Some flights may connect through major hubs like O'Hare Intl. (ORD), Dallas-Fort Worth Intl. (DFW), Vancouver Intl. (YVR) before reaching Lisbon. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lisbon (LIS-Humberto Delgado) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Humberto Delgado
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Return price
£608
Distance
8323 km

Book with confidence

Compare flights from Seattle to Lisbon easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Seattle to Lisbon. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Humberto Delgado in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Seattle - Tacoma Intl. to Humberto Delgado.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Seattle - Tacoma Intl. (SEA) to Humberto Delgado (LIS)

The easiest way to view the best deals on flights from Seattle to Lisbon today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Seattle - Tacoma Intl. to Humberto Delgado start at just £609 and range up to £643.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Seattle and Lisbon
  • booking your flight during October, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Seattle to Lisbon flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Seattle - Tacoma Intl. to Humberto Delgado for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Seattle to Lisbon easily and book with confidence

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*Available to Expedia members.