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Cheap flights from Seattle to Lisbon from $264

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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0 bags

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Find the cheapest flights from Seattle to Lisbon

Cheap round-trip flights

Logo
10:00 am - 11:05 amSEA-LIS
17h 05m2 stops
Logo
2:10 pm - 2:20 pmLIS-SEA
31h 10m1 stop
$611
Find Deal
Fri, Oct 17 - Thu, Oct 30
Delta Logo
1:30 pm - 5:50 pmSEA-LIS
20h 20m1 stop
Delta Logo
5:30 am - 12:25 pmLIS-SEA
13h 55m1 stop
$616Delta
Find Deal
Fri, Oct 17 - Thu, Oct 30
Lufthansa Logo
3:10 pm - 11:30 pmSEA-LIS
24h 20m1 stop
Lufthansa Logo
2:10 pm - 1:20 pmLIS-SEA
31h 10m1 stop
$632Lufthansa
Find Deal
Sun, Nov 9 - Sat, Nov 15
Air France Logo
1:40 pm - 11:20 amSEA-LIS
13h 40m1 stop
Air France Logo
6:30 pm - 1:20 pmLIS-SEA
26h 50m1 stop
$643Air France
Find Deal
Sat, Nov 8 - Sun, Nov 16
Lufthansa Logo
2:20 pm - 3:20 pmSEA-LIS
17h 00m1 stop
Lufthansa Logo
5:00 am - 12:10 pmLIS-SEA
15h 10m1 stop
$646Lufthansa
Find Deal
Thu, Oct 9 - Thu, Nov 20
Air France Logo
7:30 am - 8:00 amSEA-LIS
16h 30m1 stop
Air France Logo
5:30 am - 1:20 pmLIS-SEA
15h 50m1 stop
$647Air France
Find Deal
Thu, Nov 20 - Fri, Nov 28
British Airways Logo
6:50 pm - 9:50 amSEA-LIS
31h 00m1 stop
British Airways Logo
7:05 am - 4:55 pmLIS-SEA
17h 50m1 stop
$648British Airways
Find Deal
Mon, Nov 17 - Fri, Nov 28
British Airways Logo
6:50 pm - 9:45 pmSEA-LIS
18h 55m1 stop
British Airways Logo
8:55 am - 9:59 pmLIS-SEA
21h 04m1 stop
$663British Airways
Find Deal
Tue, Dec 16 - Thu, Dec 25
United Airlines Logo
5:00 am - 8:10 amSEA-LIS
19h 10m3 stops
United Airlines Logo
10:50 am - 12:59 amLIS-SEA
22h 09m2 stops
$686United Airlines
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Sun, Feb 8 - Sun, Feb 22
United Airlines Logo
8:17 am - 10:15 amSEA-LIS
17h 58m1 stop
United Airlines Logo
5:00 am - 12:10 pmLIS-SEA
15h 10m1 stop
$687United Airlines
Find Deal
Sat, Feb 21 - Sat, Feb 28

Air France flights from Seattle to Lisbon

Our best Air France deals on Seattle to Lisbon flight tickets
Air France
Nov 8
SEA1:40 pmSeattle/Tacoma Intl
13h 40m
1 stop
LIS11:20 amLisbon Humberto Delgado
Nov 16
LIS6:30 pmLisbon Humberto Delgado
26h 50m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$643
Find similar
Air France
Nov 20
SEA7:30 amSeattle/Tacoma Intl
16h 30m
1 stop
LIS8:00 amLisbon Humberto Delgado
Nov 28
LIS5:30 amLisbon Humberto Delgado
15h 50m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$647
Find similar
Air France
Sep 24
SEA6:45 pmSeattle/Tacoma Intl
19h 40m
1 stop
LIS10:25 pmLisbon Humberto Delgado
Oct 4
LIS9:45 amLisbon Humberto Delgado
15h 55m
1 stop
SEA5:40 pmSeattle/Tacoma Intl
$741
Find similar

Lufthansa flights from Seattle to Lisbon

Our best Lufthansa deals on Seattle to Lisbon flight tickets
Lufthansa
Nov 9
SEA3:10 pmSeattle/Tacoma Intl
24h 20m
1 stop
LIS11:30 pmLisbon Humberto Delgado
Nov 15
LIS2:10 pmLisbon Humberto Delgado
31h 10m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$632
Find similar
Lufthansa
Oct 9
SEA2:20 pmSeattle/Tacoma Intl
17h 00m
1 stop
LIS3:20 pmLisbon Humberto Delgado
Nov 20
LIS5:00 amLisbon Humberto Delgado
15h 10m
1 stop
SEA12:10 pmSeattle/Tacoma Intl
$646
Find similar
Lufthansa
Sep 24
SEA6:50 pmSeattle/Tacoma Intl
19h 00m
1 stop
LIS9:50 pmLisbon Humberto Delgado
Oct 14
LIS5:05 amLisbon Humberto Delgado
14h 50m
1 stop
SEA11:55 amSeattle/Tacoma Intl
$656
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Lisbon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Seattle to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 10/17

10:00 am-11:05 am

2 stops17h 05m

Lisbon Humberto Delgado

Thu 10/30

2:10 pm-2:20 pm

1 stop31h 10m

$611

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 10/17

1:30 pm-5:50 pm

1 stop20h 20m

Lisbon Humberto Delgado

Thu 10/30

5:30 am-12:25 pm

1 stop13h 55m

$616

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 11/9

3:10 pm-11:30 pm

1 stop24h 20m

Lisbon Humberto Delgado

Sat 11/15

2:10 pm-1:20 pm

1 stop31h 10m

$632

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 11/8

1:40 pm-11:20 am

1 stop13h 40m

Lisbon Humberto Delgado

Sun 11/16

6:30 pm-1:20 pm

1 stop26h 50m

$643

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 10/9

2:20 pm-3:20 pm

1 stop17h 00m

Lisbon Humberto Delgado

Thu 11/20

5:00 am-12:10 pm

1 stop15h 10m

$646

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 11/20

7:30 am-8:00 am

1 stop16h 30m

Lisbon Humberto Delgado

Fri 11/28

5:30 am-1:20 pm

1 stop15h 50m

$647

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 11/17

6:50 pm-9:50 am

1 stop31h 00m

Lisbon Humberto Delgado

Fri 11/28

7:05 am-4:55 pm

1 stop17h 50m

$648

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 12/16

6:50 pm-9:45 pm

1 stop18h 55m

Lisbon Humberto Delgado

Thu 12/25

8:55 am-9:59 pm

1 stop21h 04m

$663

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 2/8

5:00 am-8:10 am

3 stops19h 10m

Lisbon Humberto Delgado

Sun 2/22

10:50 am-12:59 am

2 stops22h 09m

$686

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 2/21

8:17 am-10:15 am

1 stop17h 58m

Lisbon Humberto Delgado

Sat 2/28

5:00 am-12:10 pm

1 stop15h 10m

$687

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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 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 $761. 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 $762.

What is the cheapest day to depart on your flight to Lisbon?

Our data shows that Monday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $908. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Lisbon for around $1,111.

What is the cheapest time of day to depart on your flight to Lisbon?

The cheapest time of day to fly to Lisbon is in the afternoon when flights can be purchased for as low as $959. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,074 on average. Flights to Lisbon from Seattle at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight 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 $944 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 $803 on momondo.

How have Seattle to Lisbon flight prices changed over time?

As of September 2025, prices for Seattle to Lisbon flights are approximately 34% 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

Direct flights

None
There are no direct flights from Seattle to Lisbon. There are no popular flight routes from Seattle to Lisbon.
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  • 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. 13h 28m 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?

  • 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?

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
IcelandairPriceFrom $466Free CancellationRating
7.0
544 reviews
Search Icelandair flights
Air CanadaPriceFrom $543Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
British AirwaysPriceFrom $563Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
Air FrancePriceFrom $573Free CancellationRating
7.4
1,469 reviews
Search Air France flights
Aer LingusPriceFrom $603Free CancellationRating
7.2
1,270 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $610Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
LufthansaPriceFrom $611Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
American AirlinesPriceFrom $629Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
KLMPriceFrom $632Free CancellationRating
7.8
1,385 reviews
Search KLM flights
Scandinavian AirlinesPriceFrom $652Free CancellationRating
7.4
1,484 reviews
Search Scandinavian Airlines flights

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Sintra
Fátima
Ericeira
Nazaré
Oeiras
Setúbal
Peniche
Almada
Leiria
Tomar
Estoril
Sesimbra
Evora
Figueira da Foz
Zambujeira do Mar
Torres Vedras
Batalha
Óbidos
Comporta
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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