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Cheap flights from Seattle to Lisbon from R6 499

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to Lisbon

Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
7:15 - 17:30SEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
26h 15m2 stops New York John F Kennedy Intl Paris Charles de Gaulle
Delta Logo
12:25 - 13:50LIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
33h 25m1 stop Paris Charles de Gaulle
R11 337Delta
Mon, Feb 8 - Mon, Feb 22
United Airlines Logo
7:45 - 9:20SEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
17h 35m1 stop Toronto Pearson Intl
United Airlines Logo
11:20 - 12:45LIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
33h 25m2 stops Toronto Pearson Intl Houston George Bush Intcntl
R11 369United Airlines
Tue, Feb 16 - Thu, Feb 25
Delta Logo
21:55 - 9:00SEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
27h 05m2 stops New York John F Kennedy Intl Boston Logan Intl
Delta Logo
11:30 - 11:35LIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
32h 05m1 stop Amsterdam Schiphol
R11 418Delta
Sun, Feb 21 - Mon, Mar 1
British Airways Logo
13:30 - 15:45SEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
18h 15m1 stop London Heathrow
British Airways Logo
15:15 - 11:35LIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
28h 20m1 stop London Heathrow
R11 597British Airways
Mon, Oct 5 - Wed, Oct 14
Delta Logo
7:15 - 8:00SEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
16h 45m1 stop New York John F Kennedy Intl
Delta Logo
5:30 - 22:02LIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
24h 32m2 stops Paris Charles de Gaulle New York John F Kennedy Intl
R11 630Delta
Tue, Feb 16 - Fri, Feb 26
Delta Logo
7:15 - 11:20SEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
20h 05m2 stops New York John F Kennedy Intl Paris Charles de Gaulle
Delta Logo
5:00 - 11:35LIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
14h 35m1 stop Amsterdam Schiphol
R11 663Delta
Wed, Feb 17 - Wed, Mar 3
Multiple Airlines Logo
7:15 - 8:00SEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
16h 45m1 stop New York John F Kennedy Intl
Multiple Airlines Logo
11:15 - 22:04LIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
18h 49m1 stop Boston Logan Intl
R11 728Multiple Airlines
Fri, Feb 5 - Sat, Feb 20
United Airlines Logo
7:45 - 8:55SEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
17h 10m1 stop Toronto Pearson Intl
United Airlines Logo
11:20 - 12:45LIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
33h 25m2 stops Toronto Pearson Intl Houston George Bush Intcntl
R11 760United Airlines
Thu, Feb 4 - Mon, Feb 8
British Airways Logo
13:30 - 17:55SEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
20h 25m1 stop London Heathrow
British Airways Logo
7:20 - 20:15LIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
20h 55m2 stops London Heathrow Chicago O'Hare Intl
R11 777British Airways
Mon, Oct 5 - Wed, Oct 21
British Airways Logo
18:45 - 17:55SEA  Seattle/Tacoma Intl-LIS Lisbon Humberto Delgado
15h 10m1 stop London Heathrow
British Airways Logo
10:40 - 16:50LIS  Lisbon Humberto Delgado-SEA Seattle/Tacoma Intl
14h 10m1 stop London Heathrow
R11 793British Airways
Fri, Feb 5 - Sun, Feb 14

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KLM flights from Seattle to Lisbon

Our best KLM deals on Seattle to Lisbon flight tickets
KLM
Sept 21
SEA13:50Seattle/Tacoma Intl
20h 55m
1 stop
LIS18:45Lisbon Humberto Delgado
Oct 21
LIS19:45Lisbon Humberto Delgado
24h 07m
1 stop
SEA11:52Seattle/Tacoma Intl
R12 005
KLM
Sept 22
SEA17:45Seattle/Tacoma Intl
21h 05m
1 stop
LIS22:50Lisbon Humberto Delgado
Oct 10
LIS19:45Lisbon Humberto Delgado
24h 07m
1 stop
SEA11:52Seattle/Tacoma Intl
R12 982

Delta flights from Seattle to Lisbon

Our best Delta deals on Seattle to Lisbon flight tickets
Delta
Feb 8
SEA7:15Seattle/Tacoma Intl
26h 15m
2 stops
LIS17:30Lisbon Humberto Delgado
Feb 22
LIS12:25Lisbon Humberto Delgado
33h 25m
1 stop
SEA13:50Seattle/Tacoma Intl
R11 337
Delta
Feb 21
SEA6:00Seattle/Tacoma Intl
18h 55m
2 stops
LIS8:55Lisbon Humberto Delgado
Mar 3
LIS5:00Lisbon Humberto Delgado
14h 35m
1 stop
SEA11:35Seattle/Tacoma Intl
R11 418
Delta
Feb 16
SEA7:15Seattle/Tacoma Intl
16h 45m
1 stop
LIS8:00Lisbon Humberto Delgado
Feb 26
LIS5:30Lisbon Humberto Delgado
24h 32m
2 stops
SEA22:02Seattle/Tacoma Intl
R11 630

momondo Fare Finder

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

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Depart

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Price

Cheapest return flight

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 8/2

7:15-17:30

2 stops26h 15m

Lisbon Humberto Delgado

Mon 22/2

12:25-13:50

1 stop33h 25m

R11 337

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 16/2

7:45-9:20

1 stop17h 35m

Lisbon Humberto Delgado

Thu 25/2

11:20-12:45

2 stops33h 25m

R11 369

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sun 21/2

21:55-9:00

2 stops27h 05m

Lisbon Humberto Delgado

Mon 1/3

11:30-11:35

1 stop32h 05m

R11 418

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 5/10

13:30-15:45

1 stop18h 15m

Lisbon Humberto Delgado

Wed 14/10

15:15-11:35

1 stop28h 20m

R11 597

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 16/2

7:15-8:00

1 stop16h 45m

Lisbon Humberto Delgado

Fri 26/2

5:30-22:02

2 stops24h 32m

R11 630

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Wed 17/2

7:15-11:20

2 stops20h 05m

Lisbon Humberto Delgado

Wed 3/3

5:00-11:35

1 stop14h 35m

R11 663

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Fri 5/2

7:15-8:00

1 stop16h 45m

Lisbon Humberto Delgado

Sat 20/2

11:15-22:04

1 stop18h 49m

R11 728

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Thu 4/2

7:45-8:55

1 stop17h 10m

Lisbon Humberto Delgado

Mon 8/2

11:20-12:45

2 stops33h 25m

R11 760

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 5/10

13:30-17:55

1 stop20h 25m

Lisbon Humberto Delgado

Wed 21/10

7:20-20:15

2 stops20h 55m

R11 777
Fastest return journey

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Fri 5/2

18:45-17:55

1 stop15h 10m

Lisbon Humberto Delgado

Sun 14/2

10:40-16:50

1 stop14h 10m

R11 793

Flights are sorted by cheapest return flights first.

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See travel insights to Lisbon from

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

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 R12 689 to R18 324.
The lowest price recently found on this route was R11 337.

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 R7 476. If you’re not able to fly to Lisbon in January, then February is your next best option. Flight prices from Seattle to Lisbon during February average around R9 040.

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 R13 931 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Seattle for as low as R12 705 on momondo.

How have Seattle to Lisbon flight prices changed over time?

As of September 2026, prices for Seattle to Lisbon flights are approximately 29% 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 return 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

Best price found

R6 499

Direct flights

None
The best one-way flight to Lisbon from Seattle in the past 72 hours is R6 499. The best return flight deal from Seattle to Lisbon found on momondo in the last 72 hours is R11 337.
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?

    Lisbon Humberto Delgado is 8360,7 km away from Seattle/Tacoma Intl.

  • 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 refresh daily.

  • 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 stopovers 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 necessary travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Peniche
Fátima
Estoril
Nazaré
Almada
Sintra
Leiria
Setúbal

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Lisbon?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Lisbon . Millions of users trust and use momondo every year so you are in good hands.

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?

Yes. momondo can track prices for Seattle to Lisbon flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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