Your trip to Seattle
American Airlines offers flights from Lisbon to Seattle. Browse available flight options and fares between Lisboa Airport (LIS) and Seattle/Tacoma International Airport (SEA) for business trips, family visits and short getaways.
American Airlines flights from Lisbon to Seattle
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1 Adult, Economy class
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today
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Fare options from Lisbon to Seattle
Compare fares and schedules and choose the option that fits your trip to Seattle (SEA). Prices and availability may change based on travel dates and demand.
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Please use the search function at the top of the page to find our best flight deals
Please use the search function at the top of the page to find our best flight deals*Fares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Some fares listed may include one or more connections that are Basic Economy, which class is subject to additional terms and conditions. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Additional baggage fees and charges for optional products and services may apply.
Saving on flights
Tips for finding cheap flights to SeattleÂ
Finding lower fares often depends on timing, flexibility and travel demand. These tips can make it easier to compare options and identify flights that fit your plans.
Book early
Booking 1 to 3 months ahead can help you find lower fares on flights to Seattle.
Be flexible with dates
Midweek flights, such as Tuesdays or Wednesdays, can sometimes offer lower fares.
Travel off-peak
Off-peak seasons tend to be more affordable. If travel demand is higher during holidays or major events, consider less busy times for lower fares.
Before your flight
Airport tips for departure day
Review these tips to prepare for your trip and get ready for your departure.
When to arrive
Arrive early
Arrive at least 2 hours before domestic flights. For international travel, plan for 3 hours before departure.
Check-in
Get your boarding pass
Check in online or on the American app to download your boarding pass or print it before you arrive.
Flight info
Find your gate
Check your terminal and gate before you go and watch for updates in the app or on airport displays.
Documents
Have your documents
Bring a valid ID to pass through security. Make sure your travel details match your identification.
Airport experience
Relax before your flight
Allow extra time to reach your gate and get through security before boarding begins.
Amenities
Explore airport amenities
Many airports offer dining, charging stations and other services to help you prepare for your trip before boarding.
Upgrade options
Upgrade your flight with Main Cabin Extra
Make your trip more comfortable with Main Cabin Extra. Discover how Main Cabin Extra can enhance your trip.
Extra legroom
More space with seats at the front of the Main Cabin or in exit rows.
Early boarding
Preferred Group 5 boarding allows easier access to overhead bins.
Complimentary drinks
Enjoy beer, wine and spirits on flights with full beverage service.
Quick answers
Frequently asked questions
Use the fare calendar and flight search tools on this page to compare prices across different travel dates. Adjusting your departure or return date may help you find more flight options and fares that fit your budget.
AAdvantage® members can earn miles on eligible American Airlines flights. Miles can be used toward future travel, upgrades and other rewards. Learn more about the AAdvantage® program.
When planning your trip, consider travel dates, flight options and activities at your destination. This page includes helpful information to help you compare flights and start planning your visit.
Explore local attractions, dining, entertainment and other experiences highlighted on this page to help plan your visit.
