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.

What airlines fly to Lisbon?

British Airways, Delta and United Airlines 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 14 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

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

London (LHR) was the most common stop: 46% of momondo users choosing 1-stop flights on this route connected there.

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.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Lisbon Humberto Delgado?

British Airways, SWISS, and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Lisbon Humberto Delgado

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 May 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.

$348 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 $1,250 to $865. The lowest price recently found on this route was $786.

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Find the cheapest flights from Seattle to Lisbon

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One-way

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2:30 pm - 4:05 pm

SEA

LIS

42h 35m

2 stops

4:55 pm - 10:11 pm

LIS

SEA

37h 16m

2 stops

$786Scandinavian Airlines

Mon, Oct 26 - Mon, Nov 9

7:20 am - 3:35 pm

SEA

LIS

24h 15m

2 stops

4:55 pm - 10:04 pm

LIS

SEA

37h 09m

2 stops

$790Scandinavian Airlines

Fri, Oct 23 - Sun, Nov 8

2:30 pm - 4:05 pm

SEA

LIS

42h 35m

2 stops

4:55 pm - 10:04 pm

LIS

SEA

37h 09m

2 stops

$820Scandinavian Airlines

Tue, Oct 27 - Fri, Nov 6

8:20 pm - 5:55 pm

SEA

LIS

13h 35m

1 stop

11:05 am - 10:15 pm

LIS

SEA

19h 10m

1 stop

$823British Airways

Tue, Oct 20 - Tue, Nov 10

2:40 pm - 5:30 pm

SEA

LIS

19h 50m

1 stop

5:00 am - 11:47 am

LIS

SEA

14h 47m

1 stop

$825Delta

Tue, Oct 27 - Thu, Nov 12

11:15 am - 8:00 am

SEA

LIS

13h 45m

1 stop

5:00 am - 11:47 am

LIS

SEA

14h 47m

1 stop

$826KLM

Tue, Oct 27 - Thu, Nov 5

5:45 am - 11:00 am

SEA

LIS

22h 15m

2 stops

12:25 pm - 12:10 pm

LIS

SEA

31h 45m

1 stop

$827Multiple Airlines

Wed, Oct 28 - Mon, Nov 2

7:20 am - 11:20 am

SEA

LIS

21h 00m

2 stops

5:00 am - 11:47 am

LIS

SEA

14h 47m

1 stop

$830Delta

Tue, Oct 27 - Thu, Nov 5

3:55 pm - 3:35 pm

SEA

LIS

15h 40m

1 stop

4:25 pm - 1:45 pm

LIS

SEA

29h 20m

1 stop

$831Scandinavian Airlines

Tue, Sep 1 - Sat, Sep 5

3:00 pm - 3:10 pm

SEA

LIS

17h 10m

1 stop

5:30 am - 3:21 pm

LIS

SEA

17h 51m

1 stop

$833Delta

Sun, Oct 25 - Fri, Nov 6

Scandinavian Airlines flights from Seattle to Lisbon

Our best Scandinavian Airlines deals on Seattle to Lisbon flight tickets

Scandinavian Airlines

Oct 26

SEA2:30 pmSeattle/Tacoma Intl

42h 35m

2 stops

LIS4:05 pmLisbon Humberto Delgado

Nov 10

LIS4:55 pmLisbon Humberto Delgado

37h 16m

2 stops

SEA10:11 pmSeattle/Tacoma Intl

$786

Scandinavian Airlines

Oct 23

SEA7:20 amSeattle/Tacoma Intl

24h 15m

2 stops

LIS3:35 pmLisbon Humberto Delgado

Nov 8

LIS4:55 pmLisbon Humberto Delgado

37h 09m

2 stops

SEA10:04 pmSeattle/Tacoma Intl

$790

Scandinavian Airlines

Oct 27

SEA2:30 pmSeattle/Tacoma Intl

42h 35m

2 stops

LIS4:05 pmLisbon Humberto Delgado

Nov 12

LIS4:55 pmLisbon Humberto Delgado

39h 14m

2 stops

SEA12:09 amSeattle/Tacoma Intl

$820

British Airways flights from Seattle to Lisbon

Our best British Airways deals on Seattle to Lisbon flight tickets

British Airways

Oct 20

SEA8:20 pmSeattle/Tacoma Intl

13h 35m

1 stop

LIS5:55 pmLisbon Humberto Delgado

Nov 10

LIS11:05 amLisbon Humberto Delgado

19h 10m

1 stop

SEA10:15 pmSeattle/Tacoma Intl

$823

British Airways

Oct 13

SEA8:20 pmSeattle/Tacoma Intl

13h 35m

1 stop

LIS5:55 pmLisbon Humberto Delgado

Oct 28

LIS11:05 amLisbon Humberto Delgado

18h 46m

1 stop

SEA10:51 pmSeattle/Tacoma Intl

$869

British Airways

Nov 1

SEA6:50 pmSeattle/Tacoma Intl

18h 55m

1 stop

LIS9:45 pmLisbon Humberto Delgado

Nov 14

LIS11:05 amLisbon Humberto Delgado

19h 10m

1 stop

SEA10:15 pmSeattle/Tacoma Intl

$872

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 10/26

2:30 pm-4:05 pm

2 stops42h 35m

Lisbon Humberto Delgado

Mon 11/9

4:55 pm-10:11 pm

2 stops37h 16m

$786

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 10/23

7:20 am-3:35 pm

2 stops24h 15m

Lisbon Humberto Delgado

Sun 11/8

4:55 pm-10:04 pm

2 stops37h 09m

$790

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 10/27

2:30 pm-4:05 pm

2 stops42h 35m

Lisbon Humberto Delgado

Fri 11/6

4:55 pm-10:04 pm

2 stops37h 09m

$820

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 10/20

8:20 pm-5:55 pm

1 stop13h 35m

Lisbon Humberto Delgado

Tue 11/10

11:05 am-10:15 pm

1 stop19h 10m

$823

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 10/27

2:40 pm-5:30 pm

1 stop19h 50m

Lisbon Humberto Delgado

Thu 11/12

5:00 am-11:47 am

1 stop14h 47m

$825

Quickest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 10/27

11:15 am-8:00 am

1 stop13h 45m

Lisbon Humberto Delgado

Thu 11/5

5:00 am-11:47 am

1 stop14h 47m

$826

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 10/28

5:45 am-11:00 am

2 stops22h 15m

Lisbon Humberto Delgado

Mon 11/2

12:25 pm-12:10 pm

1 stop31h 45m

$827

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 10/27

7:20 am-11:20 am

2 stops21h 00m

Lisbon Humberto Delgado

Thu 11/5

5:00 am-11:47 am

1 stop14h 47m

$830

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 9/1

3:55 pm-3:35 pm

1 stop15h 40m

Lisbon Humberto Delgado

Sat 9/5

4:25 pm-1:45 pm

1 stop29h 20m

$831

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 10/25

3:00 pm-3:10 pm

1 stop17h 10m

Lisbon Humberto Delgado

Fri 11/6

5:30 am-3:21 pm

1 stop17h 51m

$833

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 $555.

How far in advance should I book a flight from Seattle 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 $817 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 $727 on momondo.

Can stopping save me money on Seattle to Lisbon flights?

You could potentially save up to 5% 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 May 2026, prices for Seattle to Lisbon flights are approximately 9% 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	16h 05m
Direct flights	None

The fastest flight from Seattle to Lisbon takes 16h 05m

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. 16h 05m 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 May 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 (24% of total bookings). The next most popular airlines are Delta (16%), United Airlines (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 7.0 650 reviews	Search Icelandair flights
Lufthansa	PriceFrom $482	Free Cancellation	Rating 6.8 7,974 reviews	Search Lufthansa flights
British Airways	PriceFrom $482	Free Cancellation	Rating 6.7 7,944 reviews	Search British Airways flights
United Airlines	PriceFrom $494	Free Cancellation	Rating 7.4 9,684 reviews	Search United Airlines flights
KLM	PriceFrom $503	Free Cancellation	Rating 7.8 1,511 reviews	Search KLM flights
Air France	PriceFrom $505	Free Cancellation	Rating 7.4 1,585 reviews	Search Air France flights
Air Canada	PriceFrom $543	Free Cancellation	Rating 7.1 11,000 reviews	Search Air Canada flights
Delta	PriceFrom $545	Free Cancellation	Rating 7.9 8,458 reviews	Search Delta flights
Aer Lingus	PriceFrom $553	Free Cancellation	Rating 7.3 1,543 reviews	Search Aer Lingus flights
American Airlines	PriceFrom $558	Free Cancellation	Rating 7.1 11,666 reviews	Search American Airlines flights

Sintra

Ericeira

Fátima

Nazaré

Setúbal

Peniche

Estoril

Evora

Oeiras

Leiria

Sesimbra

Figueira da Foz

Zambujeira do Mar

Óbidos

Batalha

Tomar

Comporta

Torres Vedras

Almada

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.

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Cheap flights from Seattle to Lisbon from $348

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 5/10. 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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Scandinavian Airlines flights from Seattle to Lisbon

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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 from Seattle to Lisbon?

Can stopping save me money on Seattle to Lisbon flights?

How have Seattle to Lisbon flight prices changed over time?

What is the cheapest airline that flies from Seattle/Tacoma Intl to Lisbon Humberto Delgado?

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.

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

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

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