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 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 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, 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 34% 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.

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

WestJet, British Airways, and Air Canada 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 13 as of July 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.

$236 Cheap Flights from Seattle to Lisbon in 2026

Discover deals from 900+ travel sites with momondo.

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.

8:20 pm - 11:10 pm

SEA

LIS

18h 50m

1 stop

5:10 pm - 11:35 am

LIS

SEA

26h 25m

1 stop

$240British Airways

Mon, Sep 21 - Mon, Oct 5

8:00 am - 6:35 pm

SEA

LIS

26h 35m

2 stops

6:45 pm - 9:04 pm

LIS

SEA

34h 19m

3 stops

$691Multiple Airlines

Wed, Aug 26 - Wed, Sep 9

3:40 pm - 8:30 am

SEA

LIS

32h 50m

3 stops

9:25 am - 8:40 pm

LIS

SEA

19h 15m

2 stops

$728Multiple Airlines

Mon, Sep 28 - Tue, Oct 6

2:50 pm - 1:20 pm

SEA

LIS

14h 30m

1 stop

5:00 am - 7:03 pm

LIS

SEA

22h 03m

2 stops

$737Lufthansa

Wed, Nov 4 - Wed, Nov 18

2:50 pm - 1:20 pm

SEA

LIS

14h 30m

1 stop

5:00 am - 12:00 pm

LIS

SEA

15h 00m

1 stop

$738Lufthansa

Sun, Nov 8 - Wed, Nov 18

7:45 am - 8:55 am

SEA

LIS

18h 10m

1 stop

11:20 am - 9:27 am

LIS

SEA

30h 07m

2 stops

$743Air Canada

Wed, Oct 28 - Fri, Nov 6

8:40 am - 8:55 am

SEA

LIS

17h 15m

2 stops

11:20 am - 9:27 am

LIS

SEA

30h 07m

2 stops

$743Air Canada

Wed, Oct 28 - Fri, Nov 6

8:10 am - 10:20 am

SEA

LIS

19h 10m

1 stop

5:00 am - 12:00 pm

LIS

SEA

15h 00m

1 stop

$748United Airlines

Wed, Oct 28 - Thu, Nov 5

6:45 am - 8:10 am

SEA

LIS

17h 25m

1 stop

5:00 am - 12:00 pm

LIS

SEA

15h 00m

1 stop

$748United Airlines

Sun, Nov 8 - Wed, Nov 18

6:45 pm - 5:40 pm

SEA

LIS

14h 55m

1 stop

6:35 pm - 11:25 am

LIS

SEA

24h 50m

1 stop

$761British Airways

Wed, Nov 18 - Wed, Dec 2

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Lufthansa flights from Seattle to Lisbon

Our best Lufthansa deals on Seattle to Lisbon flight tickets

Lufthansa

Nov 4

SEA2:50 pmSeattle/Tacoma Intl

14h 30m

1 stop

LIS1:20 pmLisbon Humberto Delgado

Nov 18

LIS5:00 amLisbon Humberto Delgado

22h 03m

2 stops

SEA7:03 pmSeattle/Tacoma Intl

$737

Lufthansa

Nov 8

SEA2:50 pmSeattle/Tacoma Intl

14h 30m

1 stop

LIS1:20 pmLisbon Humberto Delgado

Nov 18

LIS5:00 amLisbon Humberto Delgado

15h 00m

1 stop

SEA12:00 pmSeattle/Tacoma Intl

$738

Lufthansa

Nov 4

SEA2:50 pmSeattle/Tacoma Intl

14h 30m

1 stop

LIS1:20 pmLisbon Humberto Delgado

Nov 18

LIS5:00 amLisbon Humberto Delgado

15h 00m

1 stop

SEA12:00 pmSeattle/Tacoma Intl

$739

Air Canada flights from Seattle to Lisbon

Our best Air Canada deals on Seattle to Lisbon flight tickets

Air Canada

Oct 28

SEA8:40 amSeattle/Tacoma Intl

17h 15m

2 stops

LIS8:55 amLisbon Humberto Delgado

Nov 6

LIS11:20 amLisbon Humberto Delgado

30h 07m

2 stops

SEA9:27 amSeattle/Tacoma Intl

$743

Air Canada

Jan 3

SEA7:05 pmSeattle/Tacoma Intl

30h 15m

2 stops

LIS9:20 amLisbon Humberto Delgado

Jan 14

LIS8:55 amLisbon Humberto Delgado

32h 32m

2 stops

SEA9:27 amSeattle/Tacoma Intl

$768

Air Canada

Jan 2

SEA7:05 pmSeattle/Tacoma Intl

30h 15m

2 stops

LIS9:20 amLisbon Humberto Delgado

Jan 13

LIS11:20 amLisbon Humberto Delgado

17h 39m

1 stop

SEA8:59 pmSeattle/Tacoma Intl

$772

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 9/21

8:20 pm-11:10 pm

1 stop18h 50m

Lisbon Humberto Delgado

Mon 10/5

5:10 pm-11:35 am

1 stop26h 25m

$240

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 8/26

8:00 am-6:35 pm

2 stops26h 35m

Lisbon Humberto Delgado

Wed 9/9

6:45 pm-9:04 pm

3 stops34h 19m

$691

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 9/28

3:40 pm-8:30 am

3 stops32h 50m

Lisbon Humberto Delgado

Tue 10/6

9:25 am-8:40 pm

2 stops19h 15m

$728

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 11/4

2:50 pm-1:20 pm

1 stop14h 30m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-7:03 pm

2 stops22h 03m

$737

Quickest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 11/8

2:50 pm-1:20 pm

1 stop14h 30m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-12:00 pm

1 stop15h 00m

$738

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 10/28

7:45 am-8:55 am

1 stop18h 10m

Lisbon Humberto Delgado

Fri 11/6

11:20 am-9:27 am

2 stops30h 07m

$743

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 10/28

8:40 am-8:55 am

2 stops17h 15m

Lisbon Humberto Delgado

Fri 11/6

11:20 am-9:27 am

2 stops30h 07m

$743

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 10/28

8:10 am-10:20 am

1 stop19h 10m

Lisbon Humberto Delgado

Thu 11/5

5:00 am-12:00 pm

1 stop15h 00m

$748

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 11/8

6:45 am-8:10 am

1 stop17h 25m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-12:00 pm

1 stop15h 00m

$748

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 11/18

6:45 pm-5:40 pm

1 stop14h 55m

Lisbon Humberto Delgado

Wed 12/2

6:35 pm-11:25 am

1 stop24h 50m

$761

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?

Prices are currently low for flights on this route.

Typical prices usually range from $811 to $1,100.
The lowest price recently found on this route was $240.

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 $481. 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 $553.

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 $843 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 $728 on momondo.

Can stopping save me money on Seattle to Lisbon flights?

You could potentially save up to 1% 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 July 2026, prices for Seattle to Lisbon flights are approximately 47% 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	14h 10m
Direct flights	None

The fastest flight from Seattle to Lisbon takes 14h 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. 14h 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 13 as of July 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 (20%), United Airlines (15%), and Lufthansa (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
Icelandair	PriceFrom $348	Free Cancellation	Rating 7.0 715 reviews	Search Icelandair flights
Lufthansa	PriceFrom $475	Free Cancellation	Rating 6.8 8,161 reviews	Search Lufthansa flights
British Airways	PriceFrom $482	Free Cancellation	Rating 6.7 8,128 reviews	Search British Airways flights
United Airlines	PriceFrom $488	Free Cancellation	Rating 7.4 10,046 reviews	Search United Airlines flights
American Airlines	PriceFrom $497	Free Cancellation	Rating 7.1 11,841 reviews	Search American Airlines flights
KLM	PriceFrom $503	Free Cancellation	Rating 7.8 1,550 reviews	Search KLM flights
Air France	PriceFrom $505	Free Cancellation	Rating 7.5 1,627 reviews	Search Air France flights
Aer Lingus	PriceFrom $523	Free Cancellation	Rating 7.3 1,682 reviews	Search Aer Lingus flights
Air Canada	PriceFrom $543	Free Cancellation	Rating 7.1 11,398 reviews	Search Air Canada flights
Delta	PriceFrom $550	Free Cancellation	Rating 7.8 8,480 reviews	Search Delta flights

Sintra

Ericeira

Figueira da Foz

Setúbal

Estoril

Fátima

Nazaré

Evora

Leiria

Peniche

Batalha

Sesimbra

Óbidos

Oeiras

Zambujeira do Mar

Tomar

Torres Vedras

Comporta

Sines

Costa da Caparica

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 $236

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 11/25. 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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Lufthansa flights from Seattle to Lisbon

Our best Lufthansa deals on Seattle to Lisbon flight tickets

Air Canada 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

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.

Find better results for your trip to Portugal

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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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