
Popular airlines from Seattle-Tacoma International Airport (SEA) to Humberto Delgado Airport (LIS)
- KLM
KLM
- Air Canada
Air Canada
- British Airways
British Airways
- Lufthansa
Lufthansa
- Virgin Atlantic
Virgin Atlantic
- Air France
Air France
- Aer Lingus
Aer Lingus
- Plan, book, fly with confidence
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Cheap Flights from Seattle (SEA) to Lisbon (LIS)
Prices were available within the past 7 days and start at £261 for one-way flights and £376 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.










Find the cheapest month to fly from Seattle (SEA) to Lisbon (LIS)
February is typically the cheapest month to fly
Graph displaying average flight prices per month
Origin airport | Seattle - Tacoma Intl. |
Destination airport | Humberto Delgado |
Airlines serving | Aer Lingus, Air Canada, Air Europa, Air France, British Airways, Brussels Airlines, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, Virgin Atlantic |
Return price | £375 |
Distance | 8323 km |
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 £376 and range up to £508.
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 November, 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.
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Top Routes to Lisbon
- Bristol to Lisbon (BRS - LIS)
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