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£421 Cheap Flights from Lisbon (LIS) to Seattle (SEA)

View £421 flight on Wed, 17 Feb 2027Opens in a new window

Flight 1

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

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

Prices were available within the past 7 days and start at £421 for one-way flights and £640 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Sat, 5 Sept - Fri, 18 Sept
LIS
Lisbon
SEA
Seattle
£640 Return, found 9 hours ago
£640
Return
found 9 hours ago
Select Scandinavian Airlines flight, departing Sat, 5 Sept from Lisbon to Seattle, returning Fri, 18 Sept, priced at £640 found 9 hours ago
Aer Lingus
Wed, 9 Sept - Fri, 18 Sept
LIS
Lisbon
SEA
Seattle
£673 Return, found 2 days ago
£673
Return
found 2 days ago
Select Aer Lingus flight, departing Wed, 9 Sept from Lisbon to Seattle, returning Fri, 18 Sept, priced at £673 found 2 days ago
Air France
Wed, 9 Sept - Fri, 18 Sept
LIS
Lisbon
SEA
Seattle
£721 Return, found 2 days ago
£721
Return
found 2 days ago
Select Air France flight, departing Wed, 9 Sept from Lisbon to Seattle, returning Fri, 18 Sept, priced at £721 found 2 days ago
Scandinavian Airlines
Sat, 5 Sept - Fri, 18 Sept
LIS
Lisbon
SEA
Seattle
£726 Return, found 9 hours ago
£726
Return
found 9 hours ago
Select Scandinavian Airlines flight, departing Sat, 5 Sept from Lisbon to Seattle, returning Fri, 18 Sept, priced at £726 found 9 hours ago
KLM
Mon, 14 Sept - Sun, 20 Sept
LIS
Lisbon
SEA
Seattle
£726 Return, found 17 hours ago
£726
Return
found 17 hours ago
Select KLM flight, departing Mon, 14 Sept from Lisbon to Seattle, returning Sun, 20 Sept, priced at £726 found 17 hours ago
Air France
Wed, 9 Sept - Fri, 18 Sept
LIS
Lisbon
SEA
Seattle
£729 Return, found 2 days ago
£729
Return
found 2 days ago
Select Air France flight, departing Wed, 9 Sept from Lisbon to Seattle, returning Fri, 18 Sept, priced at £729 found 2 days ago
Air France
Mon, 14 Sept - Sun, 20 Sept
LIS
Lisbon
SEA
Seattle
£732 Return, found 17 hours ago
£732
Return
found 17 hours ago
Select Air France flight, departing Mon, 14 Sept from Lisbon to Seattle, returning Sun, 20 Sept, priced at £732 found 17 hours ago
Air France
Mon, 14 Sept - Sun, 20 Sept
LIS
Lisbon
SEA
Seattle
£733 Return, found 17 hours ago
£733
Return
found 17 hours ago
Select Air France flight, departing Mon, 14 Sept from Lisbon to Seattle, returning Sun, 20 Sept, priced at £733 found 17 hours ago
Lufthansa
Thu, 10 Sept - Thu, 17 Sept
LIS
Lisbon
SEA
Seattle
£735 Return, found 4 days ago
£735
Return
found 4 days ago
Select Lufthansa flight, departing Thu, 10 Sept from Lisbon to Seattle, returning Thu, 17 Sept, priced at £735 found 4 days ago
Air France
Sat, 5 Sept - Fri, 18 Sept
LIS
Lisbon
SEA
Seattle
£740 Return, found 9 hours ago
£740
Return
found 9 hours ago
Select Air France flight, departing Sat, 5 Sept from Lisbon to Seattle, returning Fri, 18 Sept, priced at £740 found 9 hours ago

Alternative airports near Seattle

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

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city centre is 20 minutes. Flights from £1,498
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city centre20 min
Flights from £1,498

Frequently asked questions

How much does a flight from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
You can find cheap one-way flights from £421 and cheap return flights from £640 LIS to SEA with Expedia. Return flights often range between £904 and £3142. 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 LIS to SEA ticket fares go up or down.
What is the cheapest month to fly from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The cheapest months to fly from LIS to SEA are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Enter LIS to SEA and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Transavia is one of the cheapest airlines offering connecting return flights from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.), with tickets starting from around £825 for flights that can be booked for departure within the next year. These prices are per adult for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.), 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 Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
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 Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 66 connecting flights per day from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.). Some common connection points include Adolfo Suarez Madrid-Barajas (MAD), Heathrow (LHR), and Dublin (DUB).
What is the earliest flight from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs around 5:00 AM. This service is operated by KLM, Air France, and Delta. This is a seasonal service active in January. An early departure like this can help you make the most of 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 Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll generally find the most flights from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.) on a Monday, with around 54 flights available. This gives you a good selection of options for your journey. Major airlines on this route include TAP Portugal, British Airways, and Delta. Flight schedules are quite consistent throughout the week, so you'll have plenty of options regardless of your travel day.
What are the most popular departure times for flights from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are between 9am and 12pm. Many major carriers, including United, British Airways and Delta, offer flights during this window. Many travellers prefer these times as they allow for a relaxed start to your travel day while still arriving at your destination at a reasonable hour.
How long does it take to fly from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are no nonstop flights from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.). The journey covers a distance of approximately 8,373 kilometers. Flights with one stop typically take around 19 hours 30 minutes. If your journey involves two or more stops, you can expect the travel time to be longer, usually around 22 hours. Keep in mind that actual flight times can vary due to factors like layover duration, routing, and wind patterns.
Can you fly business or first class from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Yes, you can fly business class or first class between LIS and SEA. Airlines that offer business class service on this route include:
  • British Airways
  • Lufthansa
  • Iberia
  • Air France
  • Brussels Airlines
  • TAP Portugal
  • Swiss International Air Lines
  • KLM
  • Turkish Airlines
  • Air Canada
  • Delta
  • Emirates
  • United
  • SAS
  • Finnair
  • Portugalia
  • American Airlines
  • Air Europa
  • Icelandair
First class cabins are available on Emirates.
How do I earn miles on a Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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 Seattle, WA (SEA) from Lisbon (LIS)?
If you're planning to travel to Seattle from Humberto Delgado (LIS), you can fly directly into Seattle - Tacoma Intl. (SEA) which offers international flights and connections. Some flights may connect through major hubs like Adolfo Suarez Madrid-Barajas (MAD), Frankfurt Intl. (FRA), or Heathrow (LHR) before reaching Seattle. 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 Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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 Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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 Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Lisbon (LIS-Humberto Delgado) to Seattle, WA (SEA-Seattle - Tacoma Intl.) 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
Humberto Delgado
Destination airport
Seattle - Tacoma Intl.
Return price
£639
Distance
8323 km

Book with confidence

Compare flights from Lisbon to Seattle easily and book with confidence

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

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 Humberto Delgado (LIS) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Lisbon to Seattle 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 Humberto Delgado to Seattle - Tacoma Intl. start at just £640 and range up to £740.  

To find an even better deal, try  

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

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

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Humberto Delgado to Seattle - Tacoma Intl. 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 Lisbon to Seattle easily and book with confidence

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