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 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.

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

Alaska Airlines, United Airlines, and British Airways are the most popular carriers operating from Seattle/Tacoma Intl to Lisbon Humberto Delgado

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: 47% of momondo users choosing 1-stop flights on this route connected there.

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.

$330 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 $1,335 to $996. The lowest price recently found on this route was $833.

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Find the cheapest flights from Seattle to Lisbon

Round-trip

One-way

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Enter your travel dates to find the best prices.

5:45 am - 8:55 pm

SEA

LIS

31h 10m

3 stops

6:10 am - 9:40 am

LIS

SEA

35h 30m

3 stops

$833Multiple Airlines

Sat, Jun 6 - Sun, Jun 21

7:20 am - 4:05 pm

SEA

LIS

25h 45m

2 stops

7:05 am - 10:12 pm

LIS

SEA

23h 07m

2 stops

$847Multiple Airlines

Sat, Oct 31 - Sat, Nov 7

3:15 pm - 9:50 am

SEA

LIS

34h 35m

2 stops

12:25 pm - 9:17 am

LIS

SEA

52h 52m

2 stops

$848Lufthansa

Sun, Nov 1 - Mon, Nov 16

3:55 pm - 10:05 pm

SEA

LIS

22h 10m

1 stop

9:15 pm - 10:11 pm

LIS

SEA

32h 56m

2 stops

$850Scandinavian Airlines

Fri, Oct 2 - Tue, Oct 6

3:55 pm - 10:05 pm

SEA

LIS

22h 10m

1 stop

9:15 pm - 12:18 am

LIS

SEA

35h 03m

2 stops

$851Scandinavian Airlines

Fri, Oct 2 - Tue, Oct 6

3:00 pm - 9:20 am

SEA

LIS

34h 20m

2 stops

6:10 am - 9:40 am

LIS

SEA

35h 30m

2 stops

$852Multiple Airlines

Sat, Jul 4 - Sat, Jul 11

3:50 pm - 11:30 pm

SEA

LIS

24h 40m

1 stop

5:00 am - 6:22 pm

LIS

SEA

21h 22m

2 stops

$853Multiple Airlines

Wed, Oct 28 - Sun, Nov 8

2:30 pm - 9:05 am

SEA

LIS

34h 35m

2 stops

4:55 pm - 12:18 am

LIS

SEA

38h 23m

2 stops

$857Scandinavian Airlines

Tue, Oct 13 - Wed, Oct 28

2:30 pm - 9:05 am

SEA

LIS

34h 35m

2 stops

4:55 pm - 12:18 am

LIS

SEA

38h 23m

2 stops

$858Scandinavian Airlines

Tue, Oct 13 - Wed, Oct 28

5:45 am - 8:55 pm

SEA

LIS

31h 10m

3 stops

6:10 am - 9:40 am

LIS

SEA

35h 30m

2 stops

$860Multiple Airlines

Sat, Jun 6 - Sun, Jun 21

Lufthansa flights from Seattle to Lisbon

Our best Lufthansa deals on Seattle to Lisbon flight tickets

Lufthansa

Nov 1

SEA3:15 pmSeattle/Tacoma Intl

34h 35m

2 stops

LIS9:50 amLisbon Humberto Delgado

Nov 16

LIS12:25 pmLisbon Humberto Delgado

52h 52m

2 stops

SEA9:17 amSeattle/Tacoma Intl

$848

Lufthansa

Oct 29

SEA3:15 pmSeattle/Tacoma Intl

35h 35m

2 stops

LIS9:50 amLisbon Humberto Delgado

Nov 11

LIS5:00 amLisbon Humberto Delgado

15h 00m

1 stop

SEA12:00 pmSeattle/Tacoma Intl

$877

Lufthansa

Nov 5

SEA3:15 pmSeattle/Tacoma Intl

35h 45m

2 stops

LIS11:00 amLisbon Humberto Delgado

Nov 20

LIS6:10 amLisbon Humberto Delgado

14h 50m

1 stop

SEA1:00 pmSeattle/Tacoma Intl

$884

British Airways flights from Seattle to Lisbon

Our best British Airways deals on Seattle to Lisbon flight tickets

British Airways

Oct 13

SEA8:20 pmSeattle/Tacoma Intl

18h 40m

1 stop

LIS11:00 pmLisbon Humberto Delgado

Oct 28

LIS11:05 amLisbon Humberto Delgado

18h 46m

1 stop

SEA10:51 pmSeattle/Tacoma Intl

$868

British Airways

Oct 13

SEA8:20 pmSeattle/Tacoma Intl

18h 40m

1 stop

LIS11:00 pmLisbon Humberto Delgado

Oct 28

LIS11:05 amLisbon Humberto Delgado

18h 46m

1 stop

SEA10:51 pmSeattle/Tacoma Intl

$869

British Airways

Nov 5

SEA1:25 pmSeattle/Tacoma Intl

14h 45m

1 stop

LIS12:10 pmLisbon Humberto Delgado

Nov 16

LIS6:35 pmLisbon Humberto Delgado

24h 55m

1 stop

SEA11:30 amSeattle/Tacoma Intl

$899

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 6/6

5:45 am-8:55 pm

3 stops31h 10m

Lisbon Humberto Delgado

Sun 6/21

6:10 am-9:40 am

3 stops35h 30m

$833

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 10/31

7:20 am-4:05 pm

2 stops25h 45m

Lisbon Humberto Delgado

Sat 11/7

7:05 am-10:12 pm

2 stops23h 07m

$847

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 11/1

3:15 pm-9:50 am

2 stops34h 35m

Lisbon Humberto Delgado

Mon 11/16

12:25 pm-9:17 am

2 stops52h 52m

$848

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 10/2

3:55 pm-10:05 pm

1 stop22h 10m

Lisbon Humberto Delgado

Tue 10/6

9:15 pm-10:11 pm

2 stops32h 56m

$850

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 10/2

3:55 pm-10:05 pm

1 stop22h 10m

Lisbon Humberto Delgado

Tue 10/6

9:15 pm-12:18 am

2 stops35h 03m

$851

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 7/4

3:00 pm-9:20 am

2 stops34h 20m

Lisbon Humberto Delgado

Sat 7/11

6:10 am-9:40 am

2 stops35h 30m

$852

Quickest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 10/28

3:50 pm-11:30 pm

1 stop24h 40m

Lisbon Humberto Delgado

Sun 11/8

5:00 am-6:22 pm

2 stops21h 22m

$853

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 10/13

2:30 pm-9:05 am

2 stops34h 35m

Lisbon Humberto Delgado

Wed 10/28

4:55 pm-12:18 am

2 stops38h 23m

$857

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 10/13

2:30 pm-9:05 am

2 stops34h 35m

Lisbon Humberto Delgado

Wed 10/28

4:55 pm-12:18 am

2 stops38h 23m

$858

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 6/6

5:45 am-8:55 pm

3 stops31h 10m

Lisbon Humberto Delgado

Sun 6/21

6:10 am-9:40 am

2 stops35h 30m

$860

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 $718 on momondo.

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	17h 00m
Direct flights	None

The fastest flight from Seattle to Lisbon takes 17h 00m

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. 17h 00m 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 7.0 657 reviews	Search Icelandair flights
Lufthansa	PriceFrom $482	Free Cancellation	Rating 6.8 8,019 reviews	Search Lufthansa flights
British Airways	PriceFrom $482	Free Cancellation	Rating 6.7 7,992 reviews	Search British Airways flights
United Airlines	PriceFrom $494	Free Cancellation	Rating 7.4 9,752 reviews	Search United Airlines flights
KLM	PriceFrom $503	Free Cancellation	Rating 7.8 1,519 reviews	Search KLM flights
Air France	PriceFrom $505	Free Cancellation	Rating 7.4 1,590 reviews	Search Air France flights
Air Canada	PriceFrom $543	Free Cancellation	Rating 7.1 11,075 reviews	Search Air Canada flights
Delta	PriceFrom $545	Free Cancellation	Rating 7.9 8,445 reviews	Search Delta flights
American Airlines	PriceFrom $558	Free Cancellation	Rating 7.1 11,644 reviews	Search American Airlines flights
SWISS	PriceFrom $562	Free Cancellation	Rating 7.5 1,954 reviews	Search SWISS flights

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Ericeira

Nazaré

Fátima

Peniche

Setúbal

Estoril

Evora

Oeiras

Sesimbra

Leiria

Figueira da Foz

Zambujeira do Mar

Batalha

Óbidos

Tomar

Comporta

Sines

Torres Vedras

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 $330

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 10/11. 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

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

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Why use momondo?

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