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Cheap flights from Seattle to Lisbon from $237

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 11/25. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Lisbon

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:40 pm - 11:40 pm
SEA
-
LIS
24h 00m
2 stops
Multiple Airlines Logo
6:15 am - 9:40 am
LIS
-
SEA
35h 25m
3 stops
$718Multiple Airlines
Thu, Sep 3 - Tue, Sep 8
Multiple Airlines Logo
3:40 pm - 11:40 pm
SEA
-
LIS
24h 00m
2 stops
Multiple Airlines Logo
6:15 am - 9:40 am
LIS
-
SEA
35h 25m
2 stops
$722Multiple Airlines
Thu, Sep 3 - Tue, Sep 8
Multiple Airlines Logo
7:00 pm - 11:40 pm
SEA
-
LIS
20h 40m
2 stops
Multiple Airlines Logo
6:15 am - 9:40 am
LIS
-
SEA
35h 25m
2 stops
$724Multiple Airlines
Thu, Aug 27 - Tue, Sep 8
Multiple Airlines Logo
3:40 pm - 8:30 am
SEA
-
LIS
32h 50m
3 stops
Multiple Airlines Logo
8:05 pm - 5:55 pm
LIS
-
SEA
29h 50m
3 stops
$729Multiple Airlines
Thu, Aug 27 - Tue, Sep 8
Multiple Airlines Logo
7:00 pm - 8:10 pm
SEA
-
LIS
17h 10m
2 stops
Multiple Airlines Logo
6:10 am - 9:04 pm
LIS
-
SEA
22h 54m
2 stops
$739Multiple Airlines
Wed, Sep 2 - Sat, Sep 12
Multiple Airlines Logo
3:40 pm - 11:30 pm
SEA
-
LIS
23h 50m
2 stops
Multiple Airlines Logo
6:10 am - 9:04 pm
LIS
-
SEA
22h 54m
2 stops
$741Multiple Airlines
Sat, Sep 5 - Sat, Sep 12
Multiple Airlines Logo
3:40 pm - 9:10 pm
SEA
-
LIS
21h 30m
3 stops
Multiple Airlines Logo
7:00 am - 6:45 pm
LIS
-
SEA
43h 45m
3 stops
$743Multiple Airlines
Mon, Sep 7 - Tue, Sep 22
Multiple Airlines Logo
3:40 pm - 6:45 pm
SEA
-
LIS
19h 05m
2 stops
Multiple Airlines Logo
7:00 am - 9:00 pm
LIS
-
SEA
46h 00m
3 stops
$747Multiple Airlines
Sat, Aug 29 - Sun, Sep 6
Multiple Airlines Logo
3:40 pm - 8:30 am
SEA
-
LIS
32h 50m
3 stops
Multiple Airlines Logo
6:15 am - 9:40 am
LIS
-
SEA
35h 25m
3 stops
$755Multiple Airlines
Thu, Sep 3 - Tue, Sep 8
Multiple Airlines Logo
5:40 pm - 7:30 pm
SEA
-
LIS
17h 50m
2 stops
Multiple Airlines Logo
5:00 pm - 3:40 pm
LIS
-
SEA
30h 40m
2 stops
$756Multiple Airlines
Sun, Oct 11 - Tue, Oct 20

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WestJet flights from Seattle to Lisbon

Our best WestJet deals on Seattle to Lisbon flight tickets
WestJet
Aug 27
SEA7:00 amSeattle/Tacoma Intl
31h 35m
3 stops
LIS10:35 pmLisbon Humberto Delgado
Sep 8
LIS6:15 amLisbon Humberto Delgado
35h 25m
2 stops
SEA9:40 amSeattle/Tacoma Intl
$769
WestJet
Aug 22
SEA7:00 amSeattle/Tacoma Intl
29h 55m
3 stops
LIS8:55 pmLisbon Humberto Delgado
Aug 31
LIS6:15 amLisbon Humberto Delgado
35h 25m
3 stops
SEA9:40 amSeattle/Tacoma Intl
$782
WestJet
Aug 22
SEA7:00 amSeattle/Tacoma Intl
29h 55m
3 stops
LIS8:55 pmLisbon Humberto Delgado
Aug 30
LIS6:10 amLisbon Humberto Delgado
35h 30m
3 stops
SEA9:40 amSeattle/Tacoma Intl
$795

British Airways flights from Seattle to Lisbon

Our best British Airways deals on Seattle to Lisbon flight tickets
British Airways
Jun 28
SEA1:30 pmSeattle/Tacoma Intl
18h 55m
1 stop
LIS4:25 pmLisbon Humberto Delgado
Jul 15
LIS11:00 amLisbon Humberto Delgado
15h 25m
1 stop
SEA6:25 pmSeattle/Tacoma Intl
$1,357
British Airways
Jun 28
SEA1:30 pmSeattle/Tacoma Intl
25h 35m
1 stop
LIS11:05 pmLisbon Humberto Delgado
Jul 15
LIS11:05 amLisbon Humberto Delgado
18h 30m
1 stop
SEA9:35 pmSeattle/Tacoma Intl
$1,363
British Airways
Jun 23
SEA1:30 pmSeattle/Tacoma Intl
25h 30m
1 stop
LIS11:00 pmLisbon Humberto Delgado
Jun 29
LIS5:10 pmLisbon Humberto Delgado
26h 25m
1 stop
SEA11:35 amSeattle/Tacoma Intl
$1,372

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 June 15, 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

Cheapest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 9/3

3:40 pm-11:40 pm

2 stops24h 00m

Lisbon Humberto Delgado

Tue 9/8

6:15 am-9:40 am

3 stops35h 25m

$718

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 9/3

3:40 pm-11:40 pm

2 stops24h 00m

Lisbon Humberto Delgado

Tue 9/8

6:15 am-9:40 am

2 stops35h 25m

$722

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 8/27

7:00 pm-11:40 pm

2 stops20h 40m

Lisbon Humberto Delgado

Tue 9/8

6:15 am-9:40 am

2 stops35h 25m

$724

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 8/27

3:40 pm-8:30 am

3 stops32h 50m

Lisbon Humberto Delgado

Tue 9/8

8:05 pm-5:55 pm

3 stops29h 50m

$729
Quickest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 9/2

7:00 pm-8:10 pm

2 stops17h 10m

Lisbon Humberto Delgado

Sat 9/12

6:10 am-9:04 pm

2 stops22h 54m

$739

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 9/5

3:40 pm-11:30 pm

2 stops23h 50m

Lisbon Humberto Delgado

Sat 9/12

6:10 am-9:04 pm

2 stops22h 54m

$741

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 9/7

3:40 pm-9:10 pm

3 stops21h 30m

Lisbon Humberto Delgado

Tue 9/22

7:00 am-6:45 pm

3 stops43h 45m

$743

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 8/29

3:40 pm-6:45 pm

2 stops19h 05m

Lisbon Humberto Delgado

Sun 9/6

7:00 am-9:00 pm

3 stops46h 00m

$747

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 9/3

3:40 pm-8:30 am

3 stops32h 50m

Lisbon Humberto Delgado

Tue 9/8

6:15 am-9:40 am

3 stops35h 25m

$755

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 10/11

5:40 pm-7:30 pm

2 stops17h 50m

Lisbon Humberto Delgado

Tue 10/20

5:00 pm-3:40 pm

2 stops30h 40m

$756

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

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 $488. 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 $552.

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 $820 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 $696 on momondo.

How have Seattle to Lisbon flight prices changed over time?

As of June 2026, prices for Seattle to Lisbon flights are approximately 15% more expensive 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

14h 30m

Direct flights

None
The fastest flight from Seattle to Lisbon takes 14h 30m
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?

    The straight-line distance from Seattle/Tacoma Intl to Lisbon Humberto Delgado is 5195.1 mi. 14h 30m 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
7.0
677 reviews
Search Icelandair flights
LufthansaPriceFrom $482Free CancellationRating
6.8
8,066 reviews
Search Lufthansa flights
British AirwaysPriceFrom $482Free CancellationRating
6.7
8,051 reviews
Search British Airways flights
United AirlinesPriceFrom $488Free CancellationRating
7.4
9,841 reviews
Search United Airlines flights
American AirlinesPriceFrom $497Free CancellationRating
7.1
11,660 reviews
Search American Airlines flights
KLMPriceFrom $503Free CancellationRating
7.8
1,528 reviews
Search KLM flights
Air FrancePriceFrom $504Free CancellationRating
7.4
1,606 reviews
Search Air France flights
Aer LingusPriceFrom $535Free CancellationRating
7.3
1,603 reviews
Search Aer Lingus flights
Air CanadaPriceFrom $543Free CancellationRating
7.1
11,196 reviews
Search Air Canada flights
DeltaPriceFrom $545Free CancellationRating
7.9
8,403 reviews
Search Delta flights

Traveling to a place near Lisbon?

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

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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