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.

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 35% 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.

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.

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

United Airlines, Icelandair, and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Lisbon Humberto Delgado

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.

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 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.

$237 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 $1,006 to $1,344. The lowest price recently found on this route was $696.

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.

5:40 am - 9:20 am

SEA

LIS

19h 40m

2 stops

6:45 am - 6:32 pm

LIS

SEA

19h 47m

2 stops

$696Air Canada

Tue, Oct 13 - Wed, Oct 21

8:00 am - 11:05 am

SEA

LIS

19h 05m

1 stop

6:45 am - 6:32 pm

LIS

SEA

19h 47m

2 stops

$701Air Canada

Tue, Oct 13 - Wed, Oct 21

5:40 pm - 9:00 pm

SEA

LIS

19h 20m

2 stops

2:00 pm - 4:00 pm

LIS

SEA

34h 00m

3 stops

$707Multiple Airlines

Wed, Oct 7 - Wed, Oct 21

7:45 am - 11:00 am

SEA

LIS

19h 15m

1 stop

5:00 am - 12:00 pm

LIS

SEA

15h 00m

1 stop

$716Multiple Airlines

Wed, Nov 4 - Wed, Nov 18

5:40 pm - 9:00 pm

SEA

LIS

19h 20m

2 stops

9:15 pm - 4:00 pm

LIS

SEA

26h 45m

2 stops

$722Multiple Airlines

Wed, Oct 7 - Wed, Oct 21

7:00 am - 8:10 am

SEA

LIS

17h 10m

2 stops

5:00 am - 12:00 pm

LIS

SEA

15h 00m

1 stop

$733United Airlines

Mon, Nov 9 - Wed, Nov 18

7:05 pm - 9:50 am

SEA

LIS

30h 45m

2 stops

5:00 am - 9:57 pm

LIS

SEA

24h 57m

2 stops

$736Air Canada

Mon, Nov 9 - Tue, Nov 17

3:15 pm - 9:50 am

SEA

LIS

34h 35m

2 stops

5:00 am - 12:00 pm

LIS

SEA

15h 00m

1 stop

$737Lufthansa

Sun, Nov 8 - Wed, Nov 18

3:40 pm - 8:30 am

SEA

LIS

32h 50m

3 stops

9:20 pm - 8:40 pm

LIS

SEA

31h 20m

3 stops

$738Multiple Airlines

Tue, Sep 1 - Mon, Sep 14

7:00 am - 11:00 am

SEA

LIS

20h 00m

2 stops

5:00 am - 12:00 pm

LIS

SEA

15h 00m

1 stop

$741United Airlines

Wed, Nov 11 - Thu, Nov 19

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WestJet flights from Seattle to Lisbon

Our best WestJet deals on Seattle to Lisbon flight tickets

WestJet

Aug 9

SEA7:00 amSeattle/Tacoma Intl

30h 45m

2 stops

LIS9:45 pmLisbon Humberto Delgado

Aug 24

LIS6:15 amLisbon Humberto Delgado

35h 25m

2 stops

SEA9:40 amSeattle/Tacoma Intl

$765

WestJet

Jul 16

SEA7:00 amSeattle/Tacoma Intl

31h 35m

3 stops

LIS10:35 pmLisbon Humberto Delgado

Jul 23

LIS6:10 amLisbon Humberto Delgado

35h 30m

2 stops

SEA9:40 amSeattle/Tacoma Intl

$786

WestJet

Jul 2

SEA7:35 pmSeattle/Tacoma Intl

19h 00m

2 stops

LIS10:35 pmLisbon Humberto Delgado

Jul 7

LIS6:15 amLisbon Humberto Delgado

35h 25m

2 stops

SEA9:40 amSeattle/Tacoma Intl

$951

Icelandair flights from Seattle to Lisbon

Our best Icelandair deals on Seattle to Lisbon flight tickets

Icelandair

Jul 4

SEA7:00 pmSeattle/Tacoma Intl

18h 20m

1 stop

LIS9:20 pmLisbon Humberto Delgado

Jul 16

LIS10:20 pmLisbon Humberto Delgado

21h 25m

1 stop

SEA11:45 amSeattle/Tacoma Intl

$985

Icelandair

Jul 4

SEA7:00 pmSeattle/Tacoma Intl

18h 20m

1 stop

LIS9:20 pmLisbon Humberto Delgado

Jul 16

LIS10:20 pmLisbon Humberto Delgado

21h 25m

1 stop

SEA11:45 amSeattle/Tacoma Intl

$986

Icelandair

Jul 4

SEA11:25 pmSeattle/Tacoma Intl

13h 55m

1 stop

LIS9:20 pmLisbon Humberto Delgado

Jul 12

LIS10:20 pmLisbon Humberto Delgado

21h 25m

1 stop

SEA11:45 amSeattle/Tacoma Intl

$1,029

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 10/13

5:40 am-9:20 am

2 stops19h 40m

Lisbon Humberto Delgado

Wed 10/21

6:45 am-6:32 pm

2 stops19h 47m

$696

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 10/13

8:00 am-11:05 am

1 stop19h 05m

Lisbon Humberto Delgado

Wed 10/21

6:45 am-6:32 pm

2 stops19h 47m

$701

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 10/7

5:40 pm-9:00 pm

2 stops19h 20m

Lisbon Humberto Delgado

Wed 10/21

2:00 pm-4:00 pm

3 stops34h 00m

$707

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 11/4

7:45 am-11:00 am

1 stop19h 15m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-12:00 pm

1 stop15h 00m

$716

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 10/7

5:40 pm-9:00 pm

2 stops19h 20m

Lisbon Humberto Delgado

Wed 10/21

9:15 pm-4:00 pm

2 stops26h 45m

$722

Quickest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 11/9

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-12:00 pm

1 stop15h 00m

$733

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 11/9

7:05 pm-9:50 am

2 stops30h 45m

Lisbon Humberto Delgado

Tue 11/17

5:00 am-9:57 pm

2 stops24h 57m

$736

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 11/8

3:15 pm-9:50 am

2 stops34h 35m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-12:00 pm

1 stop15h 00m

$737

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 9/1

3:40 pm-8:30 am

3 stops32h 50m

Lisbon Humberto Delgado

Mon 9/14

9:20 pm-8:40 pm

3 stops31h 20m

$738

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 11/11

7:00 am-11:00 am

2 stops20h 00m

Lisbon Humberto Delgado

Thu 11/19

5:00 am-12:00 pm

1 stop15h 00m

$741

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 $482. 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 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 $824 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 $726 on momondo.

How have Seattle to Lisbon flight prices changed over time?

As of June 2026, prices for Seattle to Lisbon flights are approximately 6% 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 55m
Direct flights	None

The fastest flight from Seattle to Lisbon takes 16h 55m

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

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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 55m 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 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 (18%), 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 7.0 680 reviews	Search Icelandair flights
Lufthansa	PriceFrom $482	Free Cancellation	Rating 6.8 8,084 reviews	Search Lufthansa flights
British Airways	PriceFrom $482	Free Cancellation	Rating 6.7 8,057 reviews	Search British Airways flights
United Airlines	PriceFrom $488	Free Cancellation	Rating 7.4 9,863 reviews	Search United Airlines flights
American Airlines	PriceFrom $497	Free Cancellation	Rating 7.1 11,716 reviews	Search American Airlines flights
KLM	PriceFrom $503	Free Cancellation	Rating 7.8 1,530 reviews	Search KLM flights
Air France	PriceFrom $504	Free Cancellation	Rating 7.5 1,611 reviews	Search Air France flights
Aer Lingus	PriceFrom $535	Free Cancellation	Rating 7.3 1,608 reviews	Search Aer Lingus flights
Air Canada	PriceFrom $543	Free Cancellation	Rating 7.1 11,227 reviews	Search Air Canada flights
Delta	PriceFrom $550	Free Cancellation	Rating 7.8 8,421 reviews	Search Delta flights

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Ericeira

Fátima

Nazaré

Estoril

Setúbal

Figueira da Foz

Peniche

Evora

Oeiras

Leiria

Sesimbra

Batalha

Óbidos

Zambujeira do Mar

Costa da Caparica

Tomar

Comporta

Sines

Torres Vedras

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 $237

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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WestJet flights from Seattle to Lisbon

Our best WestJet deals on Seattle to Lisbon flight tickets

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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?

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

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