Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Lisbon from $315

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 5/10. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Lisbon

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:55 pm - 8:40 pm
SEA
-
LIS
20h 45m
1 stop
Multiple Airlines Logo
4:25 pm - 1:45 pm
LIS
-
SEA
29h 20m
1 stop
$720Multiple Airlines
Fri, Oct 2 - Sat, Oct 10
Multiple Airlines Logo
3:55 pm - 8:40 pm
SEA
-
LIS
20h 45m
1 stop
Multiple Airlines Logo
4:25 pm - 1:45 pm
LIS
-
SEA
29h 20m
1 stop
$738Multiple Airlines
Fri, Oct 2 - Sat, Oct 10
Turkish Airlines Logo
7:10 pm - 11:20 pm
SEA
-
LIS
20h 10m
1 stop
Turkish Airlines Logo
5:55 am - 5:15 pm
LIS
-
SEA
19h 20m
1 stop
$744Turkish Airlines
Tue, Oct 6 - Tue, Oct 20
Multiple Airlines Logo
3:55 pm - 9:00 am
SEA
-
LIS
33h 05m
1 stop
Multiple Airlines Logo
4:25 pm - 1:45 pm
LIS
-
SEA
29h 20m
1 stop
$778Multiple Airlines
Sat, Aug 29 - Sat, Sep 5
Turkish Airlines Logo
7:10 pm - 3:40 pm
SEA
-
LIS
36h 30m
1 stop
Turkish Airlines Logo
11:00 am - 5:15 pm
LIS
-
SEA
38h 15m
1 stop
$784Turkish Airlines
Mon, Oct 5 - Fri, Oct 16
Scandinavian Airlines Logo
2:30 pm - 4:05 pm
SEA
-
LIS
42h 35m
2 stops
Scandinavian Airlines Logo
4:55 pm - 10:11 pm
LIS
-
SEA
37h 16m
2 stops
$786Scandinavian Airlines
Tue, Oct 27 - Tue, Nov 10
Turkish Airlines Logo
7:10 pm - 11:20 pm
SEA
-
LIS
20h 10m
1 stop
Turkish Airlines Logo
5:55 am - 5:15 pm
LIS
-
SEA
19h 20m
1 stop
$788Turkish Airlines
Tue, Aug 25 - Wed, Sep 16
Turkish Airlines Logo
7:10 pm - 11:20 pm
SEA
-
LIS
20h 10m
1 stop
Turkish Airlines Logo
5:55 am - 5:15 pm
LIS
-
SEA
19h 20m
1 stop
$789Turkish Airlines
Tue, Aug 25 - Wed, Sep 16
Scandinavian Airlines Logo
3:55 pm - 9:00 am
SEA
-
LIS
33h 05m
1 stop
Scandinavian Airlines Logo
4:25 pm - 1:45 pm
LIS
-
SEA
29h 20m
1 stop
$793Scandinavian Airlines
Fri, Aug 14 - Sat, Aug 22
Turkish Airlines Logo
7:10 pm - 9:50 am
SEA
-
LIS
30h 40m
1 stop
Turkish Airlines Logo
11:00 am - 5:15 pm
LIS
-
SEA
38h 15m
1 stop
$796Turkish Airlines
Tue, Aug 25 - Fri, Sep 4

Delta flights from Seattle to Lisbon

Our best Delta deals on Seattle to Lisbon flight tickets
Delta
Oct 20
SEA11:15 amSeattle/Tacoma Intl
19h 40m
2 stops
LIS2:55 pmLisbon Humberto Delgado
Nov 3
LIS5:00 amLisbon Humberto Delgado
19h 35m
2 stops
SEA4:35 pmSeattle/Tacoma Intl
$840
Delta
Oct 13
SEA11:50 amSeattle/Tacoma Intl
19h 05m
2 stops
LIS2:55 pmLisbon Humberto Delgado
Oct 20
LIS5:00 amLisbon Humberto Delgado
19h 39m
1 stop
SEA4:39 pmSeattle/Tacoma Intl
$877
Delta
May 4
SEA6:40 pmSeattle/Tacoma Intl
15h 10m
1 stop
LIS5:50 pmLisbon Humberto Delgado
May 19
LIS5:00 amLisbon Humberto Delgado
19h 30m
1 stop
SEA4:30 pmSeattle/Tacoma Intl
$1,026

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 10m
1 stop
LIS11:20 pmLisbon Humberto Delgado
Oct 20
LIS5:55 amLisbon Humberto Delgado
19h 20m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
$744
Turkish Airlines
Oct 5
SEA7:10 pmSeattle/Tacoma Intl
36h 30m
1 stop
LIS3:40 pmLisbon Humberto Delgado
Oct 16
LIS11:00 amLisbon Humberto Delgado
38h 15m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
$784
Turkish Airlines
Aug 25
SEA7:10 pmSeattle/Tacoma Intl
20h 10m
1 stop
LIS11:20 pmLisbon Humberto Delgado
Sep 16
LIS5:55 amLisbon Humberto Delgado
19h 20m
1 stop
SEA5:15 pmSeattle/Tacoma Intl
$788

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 April 30, 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

Fri 10/2

3:55 pm-8:40 pm

1 stop20h 45m

Lisbon Humberto Delgado

Sat 10/10

4:25 pm-1:45 pm

1 stop29h 20m

$720

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 10/2

3:55 pm-8:40 pm

1 stop20h 45m

Lisbon Humberto Delgado

Sat 10/10

4:25 pm-1:45 pm

1 stop29h 20m

$738
Quickest round-trip

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 10/6

7:10 pm-11:20 pm

1 stop20h 10m

Lisbon Humberto Delgado

Tue 10/20

5:55 am-5:15 pm

1 stop19h 20m

$744

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 8/29

3:55 pm-9:00 am

1 stop33h 05m

Lisbon Humberto Delgado

Sat 9/5

4:25 pm-1:45 pm

1 stop29h 20m

$778

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 10/5

7:10 pm-3:40 pm

1 stop36h 30m

Lisbon Humberto Delgado

Fri 10/16

11:00 am-5:15 pm

1 stop38h 15m

$784

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 10/27

2:30 pm-4:05 pm

2 stops42h 35m

Lisbon Humberto Delgado

Tue 11/10

4:55 pm-10:11 pm

2 stops37h 16m

$786

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 8/25

7:10 pm-11:20 pm

1 stop20h 10m

Lisbon Humberto Delgado

Wed 9/16

5:55 am-5:15 pm

1 stop19h 20m

$788

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 8/25

7:10 pm-11:20 pm

1 stop20h 10m

Lisbon Humberto Delgado

Wed 9/16

5:55 am-5:15 pm

1 stop19h 20m

$789

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 8/14

3:55 pm-9:00 am

1 stop33h 05m

Lisbon Humberto Delgado

Sat 8/22

4:25 pm-1:45 pm

1 stop29h 20m

$793

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 8/25

7:10 pm-9:50 am

1 stop30h 40m

Lisbon Humberto Delgado

Fri 9/4

11:00 am-5:15 pm

1 stop38h 15m

$796

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 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 $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 $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 $814 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 $727 on momondo.

Can stopping save me money on Seattle to Lisbon flights?

You could potentially save up to 5% 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 April 2026, prices for Seattle to Lisbon flights are approximately 39% 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

13h 35m

Direct flights

None
The fastest flight from Seattle to Lisbon takes 13h 35m
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. 13h 35m 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
646 reviews
Search Icelandair flights
LufthansaPriceFrom $482Free CancellationRating
6.8
7,964 reviews
Search Lufthansa flights
British AirwaysPriceFrom $482Free CancellationRating
6.7
7,937 reviews
Search British Airways flights
United AirlinesPriceFrom $494Free CancellationRating
7.4
9,677 reviews
Search United Airlines flights
KLMPriceFrom $503Free CancellationRating
7.8
1,511 reviews
Search KLM flights
Air FrancePriceFrom $530Free CancellationRating
7.4
1,582 reviews
Search Air France flights
Air CanadaPriceFrom $543Free CancellationRating
7.1
10,983 reviews
Search Air Canada flights
DeltaPriceFrom $545Free CancellationRating
7.9
8,464 reviews
Search Delta flights
Aer LingusPriceFrom $553Free CancellationRating
7.3
1,538 reviews
Search Aer Lingus flights
American AirlinesPriceFrom $558Free CancellationRating
7.1
11,682 reviews
Search American Airlines 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
Peniche
Estoril
Evora
Oeiras
Leiria
Sesimbra
Figueira da Foz
Zambujeira do Mar
Óbidos
Batalha
Tomar
Comporta
Torres Vedras
Almada
Sines

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.

An easier way to manage your Lisbon trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 5/30
Sat 6/6
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal