Which layover airport has the shortest travel time from Seattle to Lisbon?

Flights connecting via Munich (MUC) have the shortest average one-way travel time: 14h 39m.

Which layover airport offers the lowest fares from Seattle to Lisbon?

Flights via Washington, D.C. (IAD) offer the lowest average round-trip price of $511.

Which layover airport has the shortest connection time from Seattle to Lisbon?

Munich (MUC) has the shortest average layover time for this route: 1h 23m.

Which airport is the most popular layover for flights between Seattle and Lisbon?

London (LHR) was the most common stop: 49% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to Lisbon?

British Airways, United Airlines and Delta 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 36% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 14 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

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 14 as of April 2026.

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.

$272 Cheap Flights from Seattle to Lisbon in 2026

Q: What is the typical price of a round-trip flight between Seattle and Lisbon?

Prices are currently low for flights on this route. Typical prices usually range from $900 to $510. The lowest price recently found on this route was $626.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Seattle to Lisbon

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:55 pm - 3:35 pm

SEA

LIS

15h 40m

1 stop

4:25 pm - 1:45 pm

LIS

SEA

29h 20m

1 stop

$626Scandinavian Airlines

Tue, Sep 22 - Sat, Oct 10

3:55 pm - 3:35 pm

SEA

LIS

15h 40m

1 stop

4:25 pm - 1:45 pm

LIS

SEA

29h 20m

1 stop

$654Scandinavian Airlines

Tue, Sep 8 - Sat, Sep 12

7:10 pm - 11:45 pm

SEA

LIS

20h 35m

1 stop

5:55 am - 5:15 pm

LIS

SEA

19h 20m

1 stop

$661Turkish Airlines

Wed, Sep 16 - Wed, Sep 30

7:10 pm - 9:50 am

SEA

LIS

30h 40m

1 stop

5:55 am - 5:15 pm

LIS

SEA

19h 20m

1 stop

$663Turkish Airlines

Tue, Aug 25 - Wed, Sep 16

3:55 pm - 9:00 am

SEA

LIS

33h 05m

1 stop

4:25 pm - 1:45 pm

LIS

SEA

29h 20m

1 stop

$667Scandinavian Airlines

Fri, Aug 28 - Sat, Sep 12

12:35 pm - 11:35 pm

SEA

LIS

27h 00m

1 stop

5:05 pm - 5:15 pm

LIS

SEA

32h 10m

1 stop

$672Turkish Airlines

Mon, Aug 31 - Tue, Sep 15

3:55 pm - 3:35 pm

SEA

LIS

15h 40m

1 stop

12:25 pm - 1:45 pm

LIS

SEA

33h 20m

2 stops

$691Scandinavian Airlines

Tue, Sep 8 - Thu, Sep 17

7:10 pm - 11:20 pm

SEA

LIS

20h 10m

1 stop

5:55 am - 5:15 pm

LIS

SEA

19h 20m

1 stop

$692Turkish Airlines

Tue, Sep 15 - Tue, Sep 22

7:10 pm - 3:45 pm

SEA

LIS

36h 35m

1 stop

5:55 am - 5:15 pm

LIS

SEA

19h 20m

1 stop

$693Turkish Airlines

Wed, Sep 9 - Wed, Sep 16

7:10 pm - 3:50 pm

SEA

LIS

36h 40m

1 stop

10:50 am - 5:15 pm

LIS

SEA

38h 25m

1 stop

$698Turkish Airlines

Fri, Oct 2 - Thu, Oct 15

Scandinavian Airlines flights from Seattle to Lisbon

Our best Scandinavian Airlines deals on Seattle to Lisbon flight tickets

Scandinavian Airlines

Sep 22

SEA3:55 pmSeattle/Tacoma Intl

15h 40m

1 stop

LIS3:35 pmLisbon Humberto Delgado

Oct 10

LIS4:25 pmLisbon Humberto Delgado

29h 20m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$626

Scandinavian Airlines

Sep 8

SEA3:55 pmSeattle/Tacoma Intl

15h 40m

1 stop

LIS3:35 pmLisbon Humberto Delgado

Sep 12

LIS4:25 pmLisbon Humberto Delgado

29h 20m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$654

Scandinavian Airlines

Aug 28

SEA3:55 pmSeattle/Tacoma Intl

33h 05m

1 stop

LIS9:00 amLisbon Humberto Delgado

Sep 12

LIS4:25 pmLisbon Humberto Delgado

29h 20m

1 stop

SEA1:45 pmSeattle/Tacoma Intl

$667

Turkish Airlines flights from Seattle to Lisbon

Our best Turkish Airlines deals on Seattle to Lisbon flight tickets

Turkish Airlines

Sep 16

SEA7:10 pmSeattle/Tacoma Intl

20h 35m

1 stop

LIS11:45 pmLisbon Humberto Delgado

Sep 30

LIS5:55 amLisbon Humberto Delgado

19h 20m

1 stop

SEA5:15 pmSeattle/Tacoma Intl

$661

Turkish Airlines

Aug 25

SEA7:10 pmSeattle/Tacoma Intl

30h 40m

1 stop

LIS9:50 amLisbon Humberto Delgado

Sep 16

LIS5:55 amLisbon Humberto Delgado

19h 20m

1 stop

SEA5:15 pmSeattle/Tacoma Intl

$663

Turkish Airlines

Aug 31

SEA12:35 pmSeattle/Tacoma Intl

27h 00m

1 stop

LIS11:35 pmLisbon Humberto Delgado

Sep 15

LIS5:05 pmLisbon Humberto Delgado

32h 10m

1 stop

SEA5:15 pmSeattle/Tacoma Intl

$672

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 9/22

3:55 pm-3:35 pm

1 stop15h 40m

Lisbon Humberto Delgado

Sat 10/10

4:25 pm-1:45 pm

1 stop29h 20m

$626

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 9/8

3:55 pm-3:35 pm

1 stop15h 40m

Lisbon Humberto Delgado

Sat 9/12

4:25 pm-1:45 pm

1 stop29h 20m

$654

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 9/16

7:10 pm-11:45 pm

1 stop20h 35m

Lisbon Humberto Delgado

Wed 9/30

5:55 am-5:15 pm

1 stop19h 20m

$661

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 8/25

7:10 pm-9:50 am

1 stop30h 40m

Lisbon Humberto Delgado

Wed 9/16

5:55 am-5:15 pm

1 stop19h 20m

$663

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 8/28

3:55 pm-9:00 am

1 stop33h 05m

Lisbon Humberto Delgado

Sat 9/12

4:25 pm-1:45 pm

1 stop29h 20m

$667

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 8/31

12:35 pm-11:35 pm

1 stop27h 00m

Lisbon Humberto Delgado

Tue 9/15

5:05 pm-5:15 pm

1 stop32h 10m

$672

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 9/8

3:55 pm-3:35 pm

1 stop15h 40m

Lisbon Humberto Delgado

Thu 9/17

12:25 pm-1:45 pm

2 stops33h 20m

$691

Quickest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 9/15

7:10 pm-11:20 pm

1 stop20h 10m

Lisbon Humberto Delgado

Tue 9/22

5:55 am-5:15 pm

1 stop19h 20m

$692

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 9/9

7:10 pm-3:45 pm

1 stop36h 35m

Lisbon Humberto Delgado

Wed 9/16

5:55 am-5:15 pm

1 stop19h 20m

$693

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 10/2

7:10 pm-3:50 pm

1 stop36h 40m

Lisbon Humberto Delgado

Thu 10/15

10:50 am-5:15 pm

1 stop38h 25m

$698

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Seattle and Lisbon?

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 $492. 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 $552.

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 $814 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 $723 on momondo.

Can stopping save me money on Seattle to Lisbon flights?

You could potentially save up to 6% on your flight if you consider stops on a Seattle to Lisbon flight.

How have Seattle to Lisbon flight prices changed over time?

As of April 2026, prices for Seattle to Lisbon flights are approximately 39% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Lisbon according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

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

Fastest flight time	15h 10m
Direct flights	None

The fastest flight from Seattle to Lisbon takes 15h 10m

There are no direct flights from Seattle to Lisbon. There are no popular flight routes from Seattle to Lisbon.

Search flight deals

Frequently asked questions about flying 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. 15h 10m 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 14 as of April 2026.
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 (23% of total bookings). The next most popular airlines are United Airlines (16%), Delta (15%), and Lufthansa (10%).

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
Icelandair	PriceFrom $348	Free Cancellation	Rating 7.0 631 reviews	Search Icelandair flights
British Airways	PriceFrom $482	Free Cancellation	Rating 6.7 7,858 reviews	Search British Airways flights
Lufthansa	PriceFrom $484	Free Cancellation	Rating 6.8 7,894 reviews	Search Lufthansa flights
United Airlines	PriceFrom $494	Free Cancellation	Rating 7.4 9,548 reviews	Search United Airlines flights
KLM	PriceFrom $503	Free Cancellation	Rating 7.7 1,491 reviews	Search KLM flights
Air France	PriceFrom $530	Free Cancellation	Rating 7.4 1,563 reviews	Search Air France flights
Air Canada	PriceFrom $543	Free Cancellation	Rating 7.1 10,897 reviews	Search Air Canada flights
Delta	PriceFrom $545	Free Cancellation	Rating 7.9 8,383 reviews	Search Delta flights
Aer Lingus	PriceFrom $553	Free Cancellation	Rating 7.2 1,499 reviews	Search Aer Lingus flights
American Airlines	PriceFrom $558	Free Cancellation	Rating 7.1 11,547 reviews	Search American Airlines flights

Sintra

Fátima

Ericeira

Nazaré

Setúbal

Peniche

Estoril

Evora

Oeiras

Sesimbra

Leiria

Figueira da Foz

Zambujeira do Mar

Óbidos

Batalha

Tomar

Comporta

Almada

Torres Vedras

Sines

Why 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.

An easier way to manage your Lisbon trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Thu 5/7

Thu 5/14

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Nearby airports

Airlines

Cabin classes

Other Portugal destinations

Other flights from Seattle

Complete your trip

Feeling lucky

Airports servicing Portugal

Cheap flights from Seattle to Lisbon from $272

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 5/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Seattle to Lisbon

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Scandinavian Airlines flights from Seattle to Lisbon

Our best Scandinavian Airlines deals on Seattle to Lisbon flight tickets

Turkish Airlines flights from Seattle to Lisbon

Our best Turkish Airlines deals on Seattle to Lisbon flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Seattle to Lisbon that are best for you.

See travel insights to Lisbon from

How to get the cheapest flight ticket from Seattle to Lisbon

What is the typical price of a round-trip flight between Seattle and Lisbon?

What is the cheapest month to fly to Lisbon?

How far in advance should I book a flight to Lisbon?

Can stopping save me money on Seattle to Lisbon flights?

How have Seattle to Lisbon flight prices changed over time?

What airlines fly to Lisbon?

Which airport is the most popular layover for flights between Seattle and Lisbon?

Which layover airport offers the lowest fares from Seattle to Lisbon?

Which layover airport has the shortest travel time from Seattle to Lisbon?

Which layover airport has the shortest connection time from Seattle to Lisbon?

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

Fastest flight time

Direct flights

Frequently asked questions about flying from Seattle to Lisbon

Best airlines flying from Seattle to Lisbon

Compare and see reviews for airlines that fly from Seattle to Lisbon with momondo

Traveling to a place near Lisbon?

Why use momondo?

An easier way to manage your Lisbon trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Airports servicing Portugal

Fly your favorite airline to Lisbon

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Lisbon

List of cabin classes available on flights landing in Lisbon. Availability may vary depending on flight origin and airline.

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Seattle

According to popular flight searches on momondo this year

Complete your trip to Lisbon

Explore popular destinations other users love

According to popular flight searches on momondo this year