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Cheap flights from Seattle to Lisbon from $216

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 4/20. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:20 am - 11:05 am
SEA
-
LIS
40h 45m
2 stops
Multiple Airlines Logo
5:55 am - 6:30 pm
LIS
-
SEA
20h 35m
2 stops
$492Multiple Airlines
Mon, Apr 27 - Tue, May 5
Multiple Airlines Logo
1:35 pm - 11:00 pm
SEA
-
LIS
25h 25m
1 stop
Multiple Airlines Logo
6:35 am - 10:38 pm
LIS
-
SEA
24h 03m
2 stops
$494Multiple Airlines
Tue, Apr 21 - Wed, May 6
Delta Logo
6:40 pm - 5:50 pm
SEA
-
LIS
15h 10m
1 stop
Delta Logo
5:00 am - 6:26 pm
LIS
-
SEA
21h 26m
2 stops
$498Delta
Mon, Apr 13 - Tue, Apr 28
Delta Logo
5:35 pm - 6:45 pm
SEA
-
LIS
17h 10m
1 stop
Delta Logo
5:35 am - 5:38 pm
LIS
-
SEA
20h 03m
1 stop
$499Delta
Sun, Apr 19 - Tue, Apr 28
Multiple Airlines Logo
10:20 am - 11:05 am
SEA
-
LIS
40h 45m
2 stops
Multiple Airlines Logo
5:55 am - 9:53 pm
LIS
-
SEA
23h 58m
2 stops
$500Multiple Airlines
Tue, Apr 21 - Wed, Apr 29
British Airways Logo
8:20 pm - 11:00 pm
SEA
-
LIS
18h 40m
1 stop
British Airways Logo
3:15 pm - 11:35 am
LIS
-
SEA
28h 20m
1 stop
$501British Airways
Tue, Apr 21 - Wed, May 6
Delta Logo
7:15 am - 11:15 am
SEA
-
LIS
20h 00m
2 stops
Delta Logo
5:00 am - 6:26 pm
LIS
-
SEA
21h 26m
2 stops
$502Delta
Mon, Apr 13 - Tue, Apr 28
Delta Logo
5:35 pm - 6:45 pm
SEA
-
LIS
17h 10m
1 stop
Delta Logo
5:00 am - 5:16 pm
LIS
-
SEA
20h 16m
2 stops
$503Delta
Sun, Apr 19 - Tue, Apr 28
Multiple Airlines Logo
8:00 am - 9:20 am
SEA
-
LIS
41h 20m
2 stops
Multiple Airlines Logo
5:55 am - 9:53 pm
LIS
-
SEA
23h 58m
2 stops
$504Multiple Airlines
Mon, Apr 20 - Tue, Apr 28
Air Canada Logo
8:00 pm - 11:05 am
SEA
-
LIS
55h 05m
2 stops
Air Canada Logo
11:25 am - 9:15 am
LIS
-
SEA
53h 50m
2 stops
$505Air Canada
Sun, Apr 19 - Mon, May 4

United Airlines flights from Seattle to Lisbon

Our best United Airlines deals on Seattle to Lisbon flight tickets
United Airlines
Mar 10
SEA8:00 amSeattle/Tacoma Intl
19h 15m
1 stop
LIS10:15 amLisbon Humberto Delgado
Mar 18
LIS6:10 amLisbon Humberto Delgado
21h 46m
2 stops
SEA8:56 pmSeattle/Tacoma Intl
$506
United Airlines
Mar 10
SEA7:00 amSeattle/Tacoma Intl
20h 15m
2 stops
LIS10:15 amLisbon Humberto Delgado
Mar 18
LIS6:10 amLisbon Humberto Delgado
21h 46m
2 stops
SEA8:56 pmSeattle/Tacoma Intl
$511
United Airlines
Feb 24
SEA8:17 amSeattle/Tacoma Intl
17h 58m
1 stop
LIS10:15 amLisbon Humberto Delgado
Mar 4
LIS11:20 amLisbon Humberto Delgado
18h 56m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
$515

Delta flights from Seattle to Lisbon

Our best Delta deals on Seattle to Lisbon flight tickets
Delta
Apr 13
SEA6:40 pmSeattle/Tacoma Intl
15h 10m
1 stop
LIS5:50 pmLisbon Humberto Delgado
Apr 28
LIS5:00 amLisbon Humberto Delgado
21h 26m
2 stops
SEA6:26 pmSeattle/Tacoma Intl
$498
Delta
Apr 19
SEA5:35 pmSeattle/Tacoma Intl
17h 10m
1 stop
LIS6:45 pmLisbon Humberto Delgado
Apr 28
LIS5:35 amLisbon Humberto Delgado
20h 03m
1 stop
SEA5:38 pmSeattle/Tacoma Intl
$499
Delta
Apr 13
SEA7:15 amSeattle/Tacoma Intl
20h 00m
2 stops
LIS11:15 amLisbon Humberto Delgado
Apr 28
LIS5:00 amLisbon Humberto Delgado
21h 26m
2 stops
SEA6:26 pmSeattle/Tacoma Intl
$502

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 February 24, 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

Mon 4/27

10:20 am-11:05 am

2 stops40h 45m

Lisbon Humberto Delgado

Tue 5/5

5:55 am-6:30 pm

2 stops20h 35m

$492

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 4/21

1:35 pm-11:00 pm

1 stop25h 25m

Lisbon Humberto Delgado

Wed 5/6

6:35 am-10:38 pm

2 stops24h 03m

$494

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 4/13

6:40 pm-5:50 pm

1 stop15h 10m

Lisbon Humberto Delgado

Tue 4/28

5:00 am-6:26 pm

2 stops21h 26m

$498

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 4/19

5:35 pm-6:45 pm

1 stop17h 10m

Lisbon Humberto Delgado

Tue 4/28

5:35 am-5:38 pm

1 stop20h 03m

$499

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 4/21

10:20 am-11:05 am

2 stops40h 45m

Lisbon Humberto Delgado

Wed 4/29

5:55 am-9:53 pm

2 stops23h 58m

$500

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 4/21

8:20 pm-11:00 pm

1 stop18h 40m

Lisbon Humberto Delgado

Wed 5/6

3:15 pm-11:35 am

1 stop28h 20m

$501

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 4/13

7:15 am-11:15 am

2 stops20h 00m

Lisbon Humberto Delgado

Tue 4/28

5:00 am-6:26 pm

2 stops21h 26m

$502

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 4/19

5:35 pm-6:45 pm

1 stop17h 10m

Lisbon Humberto Delgado

Tue 4/28

5:00 am-5:16 pm

2 stops20h 16m

$503

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 4/20

8:00 am-9:20 am

2 stops41h 20m

Lisbon Humberto Delgado

Tue 4/28

5:55 am-9:53 pm

2 stops23h 58m

$504

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 4/19

8:00 pm-11:05 am

2 stops55h 05m

Lisbon Humberto Delgado

Mon 5/4

11:25 am-9:15 am

2 stops53h 50m

$505

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 $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 $560.

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 $823 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 $738 on momondo.

Can stopping save me money on Seattle to Lisbon flights?

You could potentially save up to 19% 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 February 2026, prices for Seattle to Lisbon flights are approximately 14% 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

15h 20m

Direct flights

None
The fastest flight from Seattle to Lisbon takes 15h 20m
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. 15h 20m 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 $348Free CancellationRating
7.1
617 reviews
Search Icelandair flights
British AirwaysPriceFrom $482Free CancellationRating
6.7
7,762 reviews
Search British Airways flights
LufthansaPriceFrom $484Free CancellationRating
6.8
7,809 reviews
Search Lufthansa flights
United AirlinesPriceFrom $494Free CancellationRating
7.4
9,346 reviews
Search United Airlines flights
Air FrancePriceFrom $530Free CancellationRating
7.4
1,537 reviews
Search Air France flights
KLMPriceFrom $535Free CancellationRating
7.7
1,460 reviews
Search KLM flights
Air CanadaPriceFrom $543Free CancellationRating
7.1
10,745 reviews
Search Air Canada flights
DeltaPriceFrom $554Free CancellationRating
7.9
8,239 reviews
Search Delta flights
American AirlinesPriceFrom $558Free CancellationRating
7.2
11,342 reviews
Search American Airlines flights
SWISSPriceFrom $562Free CancellationRating
7.6
1,880 reviews
Search SWISS 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
Evora
Oeiras
Sesimbra
Leiria
Figueira da Foz
Tomar
Zambujeira do Mar
Batalha
Óbidos
Sines
Comporta
Torres Vedras
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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