Cheap flights from Seattle to Lisbon from $267
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Lisbon departing on 9/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Seattle to Lisbon
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Lisbon?
In general, January is the cheapest month to fly from Seattle to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $749. If you are unable to visit Lisbon during the month of January, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $759.
What is the cheapest day to depart on your flight to Lisbon?
Our data shows that Monday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $908. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Lisbon for around $1,111.
What is the cheapest time of day to depart on your flight to Lisbon?
The cheapest time of day to fly to Lisbon is in the afternoon when flights can be purchased for as low as $959. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,074 on average. Flights to Lisbon from Seattle at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
How far in advance should I book a flight to Lisbon?
You are more likely to see cheaper flights to Lisbon from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $966 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Seattle for as low as $882 on momondo.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Lisbon Humberto Delgado?
Lufthansa, Aer Lingus, and American Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Lisbon Humberto Delgado
What airlines fly to Lisbon?
British Airways, Delta and Air France are the top three most popular airlines that fly to Lisbon from Seattle according to our data. British Airways is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 13 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.
When to book flights from Seattle to Lisbon
Cheap Seattle to Lisbon (SEA to LIS) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Lisbon
How far is Seattle/Tacoma Intl to Lisbon Humberto Delgado by plane?
The straight-line distance from Seattle/Tacoma Intl to Lisbon Humberto Delgado is 5195.1 mi. 13h 50m is a normal flight duration for this route.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Lisbon Humberto Delgado Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Lisbon Humberto Delgado Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Lisbon Humberto Delgado Airport?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Lisbon Humberto Delgado Airport is 13 as of June 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Lisbon Humberto Delgado Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Lisbon Humberto Delgado Airport.
What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?
The travel and health documents you'll need for your trip to Lisbon Humberto Delgado Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Seattle to Lisbon?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to Lisbon is British Airways (24% of total bookings). The next most popular airlines are Delta (17%), Air France (12%), and United Airlines (11%).
Best airlines flying from Seattle to Lisbon
Compare and see reviews for airlines that fly from Seattle to Lisbon with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $477 | Free Cancellation | Rating 7.0 502 reviews | |||
| PriceFrom $581 | Free Cancellation | Rating 6.7 7,156 reviews | |||
| PriceFrom $602 | Free Cancellation | Rating 6.6 7,031 reviews | |||
| PriceFrom $627 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $652 | Free Cancellation | Rating 7.3 1,393 reviews | |||
| PriceFrom $654 | Free Cancellation | Rating 7.1 1,120 reviews | |||
| PriceFrom $688 | Free Cancellation | Rating 7.5 1,467 reviews | |||
| PriceFrom $694 | Free Cancellation | Rating 8.0 7,964 reviews | |||
| PriceFrom $695 | Free Cancellation | Rating 7.1 9,568 reviews | |||
| PriceFrom $700 | Free Cancellation | Rating 7.4 8,810 reviews |
Traveling to a place near Lisbon?
Book flights to Lisbon if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Seattle to Lisbon?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Lisbon from Seattle.
Can I find flights from Seattle to Lisbon with flexible booking policies on momondo?
Yes. All flights to Lisbon from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Seattle to Lisbon?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Lisbon from Seattle.
I’m not ready to book a flight from Seattle to Lisbon right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Seattle to Lisbon flights. All you need is a valid email address and we will do the rest; it is that quick and easy.