CA $544 Cheap Flights from Seattle (SEA) to Lisbon (LIS)

You can find cheap one-way flights from CA $544 and cheap return flights CA $1,057 SEA to LIS with Expedia. One-way flights typically cost between CA$715 and CA$4845, and return flights often range between CA$1165 and CA$7642. 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 SEA to LIS ticket fares go up or down.

The cheapest months to fly from SEA to LIS 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.

Enter SEA to LIS and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

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.

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.

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).

The earliest flight from Seattle - Tacoma Intl. (SEA) to Humberto Delgado (LIS) typically departs around 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 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.

You'll generally find the most flights from Seattle - Tacoma Intl. (SEA) to Lisbon (LIS) on a Thursday, with around 93 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Delta, American Airlines, and United. Looking at the week as a whole, Thursdays offer notably more flight options compared to other days.

The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to Lisbon (LIS) are in the afternoon, from 12pm to 3pm. Many major carriers, including British Airways, Lufthansa and American Airlines, offer flights during this window. This timing works well because it allows you to have a relaxed morning before heading to the airport, and you'll arrive in Lisbon with plenty of time to settle in.

A flight from SEA to LIS with a layover takes around 16 hours 50 minutes, with the route covering approximately 8,373 kilometers. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.

You can fly business class or first class between SEA and LIS. Airlines that offer business class service on this route include:

* Lufthansa
* Air France
* British Airways
* Alaska Airlines
* Air Canada
* Turkish Airlines
* SAS
* Edelweiss Air
* Icelandair
* Skywest Air
* United
* Virgin Atlantic
* Delta
* Aer Lingus
* Finnair
* Horizon Air
* Condor
* American Airlines

First class cabins are available on United.

It's easy to earn miles on a Seattle, WA (SEA) to Lisbon (LIS) 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.

If you're planning to travel to Lisbon from Seattle - Tacoma Intl. (SEA), you can fly directly into Humberto Delgado (LIS) which offers international flights and connections. Some flights may connect through major hubs like O'Hare Intl. (ORD), Dallas-Fort Worth Intl. (DFW), or Vancouver Intl. (YVR) before reaching Lisbon. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Seattle, WA (SEA) to Lisbon (LIS) 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.

Securing a Seattle, WA (SEA) to Lisbon (LIS) 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.

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.