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Cheap flights from Seattle to Lisbon from $258

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 5/3. 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

Enter your travel dates to find the best prices.
British Airways Logo
7:15 am - 2:50 pm
SEA
-
LIS
23h 35m
2 stops
British Airways Logo
10:40 am - 11:04 pm
LIS
-
SEA
20h 24m
2 stops
$483British Airways
Sun, Feb 22 - Sun, Mar 1
Air Canada Logo
3:40 pm - 11:00 am
SEA
-
LIS
35h 20m
2 stops
Air Canada Logo
1:00 pm - 7:18 pm
LIS
-
SEA
38h 18m
2 stops
$484Air Canada
Sat, Apr 11 - Sun, Apr 19
British Airways Logo
8:20 pm - 3:45 pm
SEA
-
LIS
35h 25m
1 stop
British Airways Logo
6:50 pm - 11:35 am
LIS
-
SEA
24h 45m
1 stop
$485British Airways
Sun, Apr 12 - Sun, Apr 19
Lufthansa Logo
6:50 pm - 10:45 pm
SEA
-
LIS
19h 55m
1 stop
Lufthansa Logo
5:05 am - 12:20 pm
LIS
-
SEA
15h 15m
1 stop
$486Lufthansa
Fri, Apr 17 - Sat, Apr 25
Multiple Airlines Logo
2:15 pm - 3:10 pm
SEA
-
LIS
16h 55m
1 stop
Multiple Airlines Logo
11:25 am - 11:35 am
LIS
-
SEA
32h 10m
1 stop
$487Multiple Airlines
Fri, Feb 20 - Sun, Mar 1
United Airlines Logo
5:20 pm - 9:20 am
SEA
-
LIS
33h 00m
3 stops
United Airlines Logo
5:00 am - 1:10 pm
LIS
-
SEA
15h 10m
1 stop
$488United Airlines
Mon, Mar 9 - Fri, Mar 20
Lufthansa Logo
8:00 pm - 11:05 am
SEA
-
LIS
31h 05m
2 stops
Lufthansa Logo
5:05 am - 12:20 pm
LIS
-
SEA
15h 15m
1 stop
$489Lufthansa
Fri, Apr 10 - Tue, Apr 21
United Airlines Logo
7:00 am - 10:30 am
SEA
-
LIS
19h 30m
2 stops
United Airlines Logo
5:05 am - 12:20 pm
LIS
-
SEA
15h 15m
1 stop
$490United Airlines
Thu, Apr 9 - Mon, Apr 20
Multiple Airlines Logo
3:00 pm - 10:50 pm
SEA
-
LIS
24h 50m
1 stop
Multiple Airlines Logo
3:25 pm - 10:45 pm
LIS
-
SEA
38h 20m
2 stops
$491Multiple Airlines
Thu, Mar 12 - Tue, Mar 17
United Airlines Logo
7:00 am - 10:30 am
SEA
-
LIS
19h 30m
2 stops
United Airlines Logo
11:25 am - 10:37 pm
LIS
-
SEA
43h 12m
2 stops
$492United Airlines
Thu, Apr 9 - Sun, Apr 19

United Airlines flights from Seattle to Lisbon

Our best United Airlines deals on Seattle to Lisbon flight tickets
United Airlines
Mar 9
SEA5:20 pmSeattle/Tacoma Intl
33h 00m
3 stops
LIS9:20 amLisbon Humberto Delgado
Mar 20
LIS5:00 amLisbon Humberto Delgado
15h 10m
1 stop
SEA1:10 pmSeattle/Tacoma Intl
$488
United Airlines
Apr 9
SEA7:00 amSeattle/Tacoma Intl
19h 30m
2 stops
LIS10:30 amLisbon Humberto Delgado
Apr 20
LIS5:05 amLisbon Humberto Delgado
15h 15m
1 stop
SEA12:20 pmSeattle/Tacoma Intl
$490
United Airlines
Apr 9
SEA7:00 amSeattle/Tacoma Intl
19h 30m
2 stops
LIS10:30 amLisbon Humberto Delgado
Apr 20
LIS11:25 amLisbon Humberto Delgado
39h 35m
2 stops
SEA7:00 pmSeattle/Tacoma Intl
$492

British Airways flights from Seattle to Lisbon

Our best British Airways deals on Seattle to Lisbon flight tickets
British Airways
Feb 22
SEA7:15 amSeattle/Tacoma Intl
23h 35m
2 stops
LIS2:50 pmLisbon Humberto Delgado
Mar 1
LIS10:40 amLisbon Humberto Delgado
20h 24m
2 stops
SEA11:04 pmSeattle/Tacoma Intl
$483
British Airways
Apr 12
SEA11:10 pmSeattle/Tacoma Intl
32h 35m
2 stops
LIS3:45 pmLisbon Humberto Delgado
Apr 19
LIS7:20 amLisbon Humberto Delgado
36h 15m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$485
British Airways
Apr 16
SEA11:41 amSeattle/Tacoma Intl
22h 29m
2 stops
LIS6:10 pmLisbon Humberto Delgado
Apr 26
LIS6:50 pmLisbon Humberto Delgado
24h 45m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$505

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 January 12, 2026.
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

Sun 2/22

7:15 am-2:50 pm

2 stops23h 35m

Lisbon Humberto Delgado

Sun 3/1

10:40 am-11:04 pm

2 stops20h 24m

$483

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 4/11

3:40 pm-11:00 am

2 stops35h 20m

Lisbon Humberto Delgado

Sun 4/19

1:00 pm-7:18 pm

2 stops38h 18m

$484

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 4/12

8:20 pm-3:45 pm

1 stop35h 25m

Lisbon Humberto Delgado

Sun 4/19

6:50 pm-11:35 am

1 stop24h 45m

$485

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 4/17

6:50 pm-10:45 pm

1 stop19h 55m

Lisbon Humberto Delgado

Sat 4/25

5:05 am-12:20 pm

1 stop15h 15m

$486

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 2/20

2:15 pm-3:10 pm

1 stop16h 55m

Lisbon Humberto Delgado

Sun 3/1

11:25 am-11:35 am

1 stop32h 10m

$487

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 3/9

5:20 pm-9:20 am

3 stops33h 00m

Lisbon Humberto Delgado

Fri 3/20

5:00 am-1:10 pm

1 stop15h 10m

$488

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 4/10

8:00 pm-11:05 am

2 stops31h 05m

Lisbon Humberto Delgado

Tue 4/21

5:05 am-12:20 pm

1 stop15h 15m

$489

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 4/9

7:00 am-10:30 am

2 stops19h 30m

Lisbon Humberto Delgado

Mon 4/20

5:05 am-12:20 pm

1 stop15h 15m

$490

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 3/12

3:00 pm-10:50 pm

1 stop24h 50m

Lisbon Humberto Delgado

Tue 3/17

3:25 pm-10:45 pm

2 stops38h 20m

$491

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 4/9

7:00 am-10:30 am

2 stops19h 30m

Lisbon Humberto Delgado

Sun 4/19

11:25 am-10:37 pm

2 stops43h 12m

$492

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 $504. If you are unable to visit Lisbon during the month of January, then departing from Seattle during the month November is also very affordable. Most momondo users find prices during this month for around $594.

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 $844 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 $761 on momondo.

Can stopping save me money on Seattle to Lisbon flights?

You could potentially save up to 22% 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 January 2026, prices for Seattle to Lisbon flights are approximately 24% 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 08m

Direct flights

None
The fastest flight from Seattle to Lisbon takes 16h 08m
There are no direct flights from Seattle to Lisbon. There are no popular flight routes from Seattle to Lisbon.
Search flight deals

  • 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 08m 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 $351Free CancellationRating
7.1
595 reviews
Search Icelandair flights
LufthansaPriceFrom $494Free CancellationRating
6.8
7,709 reviews
Search Lufthansa flights
British AirwaysPriceFrom $500Free CancellationRating
6.7
7,665 reviews
Search British Airways flights
United AirlinesPriceFrom $506Free CancellationRating
7.4
9,149 reviews
Search United Airlines flights
Air CanadaPriceFrom $543Free CancellationRating
7.1
10,618 reviews
Search Air Canada flights
Air FrancePriceFrom $549Free CancellationRating
7.4
1,520 reviews
Search Air France flights
American AirlinesPriceFrom $558Free CancellationRating
7.2
11,114 reviews
Search American Airlines flights
KLMPriceFrom $560Free CancellationRating
7.7
1,437 reviews
Search KLM flights
SWISSPriceFrom $562Free CancellationRating
7.5
1,846 reviews
Search SWISS flights
Aer LingusPriceFrom $568Free CancellationRating
7.2
1,435 reviews
Search Aer Lingus flights

Traveling to a place near Lisbon?

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

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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