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Cheap flights from Seattle to Lisbon from $273

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 10/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Lisbon

Cheap round-trip flights

Scandinavian Airlines Logo
7:20 am - 4:05 pmSEA-LIS
24h 45m2 stops
Scandinavian Airlines Logo
6:55 pm - 10:25 pmLIS-SEA
35h 30m2 stops
$661Scandinavian Airlines
Find Deal
Sun, Jan 11 - Sat, Jan 17
Scandinavian Airlines Logo
11:40 am - 9:00 amSEA-LIS
37h 20m2 stops
Scandinavian Airlines Logo
4:55 pm - 10:16 pmLIS-SEA
37h 21m2 stops
$662Scandinavian Airlines
Find Deal
Thu, Nov 20 - Mon, Dec 1
British Airways Logo
6:50 pm - 6:00 pmSEA-LIS
15h 10m1 stop
British Airways Logo
10:40 am - 4:55 pmLIS-SEA
14h 15m1 stop
$663British Airways
Find Deal
Thu, Jan 8 - Sun, Jan 18
Iberia Logo
10:39 am - 4:05 pmSEA-LIS
21h 26m2 stops
Iberia Logo
6:30 am - 11:18 pmLIS-SEA
24h 48m2 stops
$667Iberia
Find Deal
Wed, Nov 5 - Thu, Nov 13
British Airways Logo
2:46 pm - 5:55 pmSEA-LIS
19h 09m2 stops
British Airways Logo
6:30 am - 4:55 pmLIS-SEA
18h 25m2 stops
$671British Airways
Find Deal
Fri, Nov 7 - Tue, Nov 11
Lufthansa Logo
1:12 pm - 11:15 amSEA-LIS
14h 03m1 stop
Lufthansa Logo
5:00 am - 1:10 pmLIS-SEA
15h 10m1 stop
$679Lufthansa
Find Deal
Sat, Oct 25 - Sat, Nov 1
Lufthansa Logo
2:00 pm - 2:50 pmSEA-LIS
16h 50m1 stop
Lufthansa Logo
2:10 pm - 12:10 pmLIS-SEA
54h 00m2 stops
$693Lufthansa
Find Deal
Mon, Jan 12 - Sat, Jan 17
Icelandair Logo
3:45 pm - 9:20 pmSEA-LIS
21h 35m1 stop
Icelandair Logo
10:25 pm - 8:40 pmLIS-SEA
30h 15m1 stop
$700Icelandair
Find Deal
Wed, Oct 1 - Sun, Oct 12
Icelandair Logo
3:45 pm - 9:20 pmSEA-LIS
21h 35m1 stop
Icelandair Logo
10:25 pm - 8:40 pmLIS-SEA
30h 15m1 stop
$704Icelandair
Find Deal
Wed, Oct 1 - Sun, Oct 12
United Airlines Logo
11:59 pm - 9:20 amSEA-LIS
25h 21m2 stops
United Airlines Logo
5:00 am - 12:10 pmLIS-SEA
15h 10m1 stop
$710United Airlines
Find Deal
Thu, Dec 25 - Tue, Jan 6

British Airways flights from Seattle to Lisbon

Our best British Airways deals on Seattle to Lisbon flight tickets
British Airways
Jan 8
SEA6:50 pmSeattle/Tacoma Intl
15h 10m
1 stop
LIS6:00 pmLisbon Humberto Delgado
Jan 18
LIS10:40 amLisbon Humberto Delgado
14h 15m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$663
Find similar
British Airways
Nov 7
SEA2:46 pmSeattle/Tacoma Intl
19h 09m
2 stops
LIS5:55 pmLisbon Humberto Delgado
Nov 11
LIS6:30 amLisbon Humberto Delgado
18h 25m
2 stops
SEA4:55 pmSeattle/Tacoma Intl
$671
Find similar
British Airways
Oct 17
SEA8:20 pmSeattle/Tacoma Intl
18h 50m
1 stop
LIS11:10 pmLisbon Humberto Delgado
Nov 9
LIS7:05 amLisbon Humberto Delgado
17h 50m
1 stop
SEA4:55 pmSeattle/Tacoma Intl
$709
Find similar

Turkish Airlines flights from Seattle to Lisbon

Our best Turkish Airlines deals on Seattle to Lisbon flight tickets
Turkish Airlines
Oct 6
SEA7:10 pmSeattle/Tacoma Intl
20h 25m
1 stop
LIS11:35 pmLisbon Humberto Delgado
Oct 13
LIS5:55 amLisbon Humberto Delgado
19h 20m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
$668
Find similar
Turkish Airlines
Sep 16
SEA12:30 pmSeattle/Tacoma Intl
19h 00m
1 stop
LIS3:30 pmLisbon Humberto Delgado
Sep 23
LIS5:55 amLisbon Humberto Delgado
19h 20m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
$677
Find similar
Turkish Airlines
Oct 2
SEA7:10 pmSeattle/Tacoma Intl
20h 25m
1 stop
LIS11:35 pmLisbon Humberto Delgado
Oct 10
LIS11:00 amLisbon Humberto Delgado
31h 35m
1 stop
SEA10:35 amSeattle/Tacoma Intl
$682
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 August 21, 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

Sun 1/11

7:20 am-4:05 pm

2 stops24h 45m

Lisbon Humberto Delgado

Sat 1/17

6:55 pm-10:25 pm

2 stops35h 30m

$661

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 11/20

11:40 am-9:00 am

2 stops37h 20m

Lisbon Humberto Delgado

Mon 12/1

4:55 pm-10:16 pm

2 stops37h 21m

$662

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 1/8

6:50 pm-6:00 pm

1 stop15h 10m

Lisbon Humberto Delgado

Sun 1/18

10:40 am-4:55 pm

1 stop14h 15m

$663

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 11/5

10:39 am-4:05 pm

2 stops21h 26m

Lisbon Humberto Delgado

Thu 11/13

6:30 am-11:18 pm

2 stops24h 48m

$667

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 11/7

2:46 pm-5:55 pm

2 stops19h 09m

Lisbon Humberto Delgado

Tue 11/11

6:30 am-4:55 pm

2 stops18h 25m

$671

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 10/25

1:12 pm-11:15 am

1 stop14h 03m

Lisbon Humberto Delgado

Sat 11/1

5:00 am-1:10 pm

1 stop15h 10m

$679

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 1/12

2:00 pm-2:50 pm

1 stop16h 50m

Lisbon Humberto Delgado

Sat 1/17

2:10 pm-12:10 pm

2 stops54h 00m

$693

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 10/1

3:45 pm-9:20 pm

1 stop21h 35m

Lisbon Humberto Delgado

Sun 10/12

10:25 pm-8:40 pm

1 stop30h 15m

$700

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 10/1

3:45 pm-9:20 pm

1 stop21h 35m

Lisbon Humberto Delgado

Sun 10/12

10:25 pm-8:40 pm

1 stop30h 15m

$704

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 12/25

11:59 pm-9:20 am

2 stops25h 21m

Lisbon Humberto Delgado

Tue 1/6

5:00 am-12:10 pm

1 stop15h 10m

$710

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 $759. 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 $761.

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 $952 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 $805 on momondo.

How have Seattle to Lisbon flight prices changed over time?

As of August 2025, prices for Seattle to Lisbon flights are approximately 30% 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.
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. 14h 03m 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
528 reviews
Search Icelandair flights
British AirwaysPriceFrom $571Free CancellationRating
6.7
7,291 reviews
Search British Airways flights
LufthansaPriceFrom $621Free CancellationRating
6.8
7,344 reviews
Search Lufthansa flights
American AirlinesPriceFrom $629Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Aer LingusPriceFrom $639Free CancellationRating
7.1
1,228 reviews
Search Aer Lingus flights
Air FrancePriceFrom $648Free CancellationRating
7.4
1,469 reviews
Search Air France flights
United AirlinesPriceFrom $650Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom $652Free CancellationRating
7.4
1,471 reviews
Search Scandinavian Airlines flights
Turkish AirlinesPriceFrom $654Free CancellationRating
7.3
3,950 reviews
Search Turkish Airlines flights
KLMPriceFrom $668Free CancellationRating
7.8
1,388 reviews
Search KLM flights

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Sintra
Fátima
Nazaré
Ericeira
Setúbal
Oeiras
Almada
Peniche
Evora
Sesimbra
Estoril
Leiria
Figueira da Foz
Tomar
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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