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Cheap flights from Lisbon to Seattle from $371

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Lisbon to Seattle departing on 1/29. 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 Lisbon to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:00 am - 10:16 pm
LIS
-
SEA
19h 16m1 stop
Multiple Airlines Logo
2:35 pm - 8:15 pm
SEA
-
LIS
21h 40m2 stops
$752Multiple Airlines
Thu, Jan 22 - Thu, Jan 29
American Airlines Logo
8:20 am - 11:30 am
LIS
-
SEA
35h 10m2 stops
American Airlines Logo
7:50 pm - 5:45 pm
SEA
-
LIS
14h 55m1 stop
$754American Airlines
Thu, Mar 5 - Sun, Mar 8
American Airlines Logo
8:20 am - 11:29 pm
LIS
-
SEA
23h 09m2 stops
American Airlines Logo
7:15 am - 5:45 pm
SEA
-
LIS
27h 30m2 stops
$755American Airlines
Thu, Mar 5 - Sun, Mar 8
British Airways Logo
11:05 am - 10:07 pm
LIS
-
SEA
19h 02m1 stop
British Airways Logo
8:04 am - 2:45 pm
SEA
-
LIS
22h 41m2 stops
$756British Airways
Mon, Jan 12 - Tue, Jan 27
American Airlines Logo
10:55 am - 10:18 pm
LIS
-
SEA
19h 23m1 stop
American Airlines Logo
7:15 am - 12:05 pm
SEA
-
LIS
21h 50m2 stops
$757American Airlines
Thu, Mar 5 - Sun, Mar 8
Multiple Airlines Logo
6:35 am - 11:05 pm
LIS
-
SEA
24h 30m2 stops
Multiple Airlines Logo
1:35 pm - 11:10 pm
SEA
-
LIS
25h 35m1 stop
$758Multiple Airlines
Wed, Apr 8 - Wed, Apr 22
British Airways Logo
11:05 am - 10:07 pm
LIS
-
SEA
19h 02m1 stop
British Airways Logo
2:04 pm - 9:45 pm
SEA
-
LIS
23h 41m2 stops
$759British Airways
Mon, Jan 12 - Sun, Jan 25
British Airways Logo
7:15 am - 6:25 pm
LIS
-
SEA
19h 10m1 stop
British Airways Logo
1:35 pm - 5:55 pm
SEA
-
LIS
20h 20m1 stop
$760British Airways
Mon, Apr 13 - Wed, Apr 22
Multiple Airlines Logo
6:35 am - 11:05 pm
LIS
-
SEA
24h 30m2 stops
Multiple Airlines Logo
1:35 pm - 11:10 pm
SEA
-
LIS
25h 35m1 stop
$761Multiple Airlines
Wed, Apr 8 - Wed, Apr 22
British Airways Logo
6:35 pm - 4:55 pm
LIS
-
SEA
30h 20m1 stop
British Airways Logo
6:50 pm - 9:45 pm
SEA
-
LIS
18h 55m1 stop
$763British Airways
Mon, Jan 12 - Sun, Jan 25

American Airlines flights from Lisbon to Seattle

Our best American Airlines deals on Lisbon to Seattle flight tickets
American Airlines
Mar 5
LIS8:20 amLisbon Humberto Delgado
35h 10m
2 stops
SEA11:30 amSeattle/Tacoma Intl
Mar 8
SEA7:50 pmSeattle/Tacoma Intl
33h 15m
1 stop
LIS12:05 pmLisbon Humberto Delgado
$754
Find similar
American Airlines
Mar 5
LIS8:20 amLisbon Humberto Delgado
23h 09m
2 stops
SEA11:29 pmSeattle/Tacoma Intl
Mar 8
SEA7:15 amSeattle/Tacoma Intl
27h 30m
2 stops
LIS5:45 pmLisbon Humberto Delgado
$755
Find similar
American Airlines
Mar 5
LIS10:55 amLisbon Humberto Delgado
19h 23m
1 stop
SEA10:18 pmSeattle/Tacoma Intl
Mar 8
SEA7:15 amSeattle/Tacoma Intl
21h 50m
2 stops
LIS12:05 pmLisbon Humberto Delgado
$757
Find similar

British Airways flights from Lisbon to Seattle

Our best British Airways deals on Lisbon to Seattle flight tickets
British Airways
Jan 12
LIS11:05 amLisbon Humberto Delgado
19h 02m
1 stop
SEA10:07 pmSeattle/Tacoma Intl
Jan 27
SEA8:04 amSeattle/Tacoma Intl
22h 41m
2 stops
LIS2:45 pmLisbon Humberto Delgado
$756
Find similar
British Airways
Jan 12
LIS11:05 amLisbon Humberto Delgado
19h 02m
1 stop
SEA10:07 pmSeattle/Tacoma Intl
Jan 25
SEA2:04 pmSeattle/Tacoma Intl
23h 41m
2 stops
LIS9:45 pmLisbon Humberto Delgado
$759
Find similar
British Airways
Apr 13
LIS7:15 amLisbon Humberto Delgado
19h 10m
1 stop
SEA6:25 pmSeattle/Tacoma Intl
Apr 22
SEA1:35 pmSeattle/Tacoma Intl
20h 20m
1 stop
LIS5:55 pmLisbon Humberto Delgado
$760
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Lisbon to Seattle 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 December 26, 2025.
Use the filters below to find and compare flights from Lisbon to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 1/22

11:00 am-10:16 pm

1 stop19h 16m

Seattle/Tacoma Intl

Thu 1/29

2:35 pm-8:15 pm

2 stops21h 40m

$752

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 3/5

8:20 am-11:30 am

2 stops35h 10m

Seattle/Tacoma Intl

Sun 3/8

7:50 pm-5:45 pm

1 stop14h 55m

$754

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 3/5

8:20 am-11:29 pm

2 stops23h 09m

Seattle/Tacoma Intl

Sun 3/8

7:15 am-5:45 pm

2 stops27h 30m

$755

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 1/12

11:05 am-10:07 pm

1 stop19h 02m

Seattle/Tacoma Intl

Tue 1/27

8:04 am-2:45 pm

2 stops22h 41m

$756

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 3/5

10:55 am-10:18 pm

1 stop19h 23m

Seattle/Tacoma Intl

Sun 3/8

7:15 am-12:05 pm

2 stops21h 50m

$757

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 4/8

6:35 am-11:05 pm

2 stops24h 30m

Seattle/Tacoma Intl

Wed 4/22

1:35 pm-11:10 pm

1 stop25h 35m

$758

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 1/12

11:05 am-10:07 pm

1 stop19h 02m

Seattle/Tacoma Intl

Sun 1/25

2:04 pm-9:45 pm

2 stops23h 41m

$759

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 4/13

7:15 am-6:25 pm

1 stop19h 10m

Seattle/Tacoma Intl

Wed 4/22

1:35 pm-5:55 pm

1 stop20h 20m

$760

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Wed 4/8

6:35 am-11:05 pm

2 stops24h 30m

Seattle/Tacoma Intl

Wed 4/22

1:35 pm-11:10 pm

1 stop25h 35m

$761

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 1/12

6:35 pm-4:55 pm

1 stop30h 20m

Seattle/Tacoma Intl

Sun 1/25

6:50 pm-9:45 pm

1 stop18h 55m

$763

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 Seattle from

How to get the cheapest flight ticket from Lisbon to Seattle

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 Seattle?

In general, April is the cheapest month to fly from Lisbon to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $800. If you don’t want to visit Seattle in April, then you should wait until May to fly from Lisbon, when ticket prices are also cheap, with an average price of $801.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Lisbon is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $800. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Lisbon because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,074.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Lisbon in the evening is the least expensive time of day to depart. momondo users have found prices as low as $718 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $873. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Lisbon when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $944 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Lisbon for as low as $825 on momondo.

How have Lisbon to Seattle flight prices changed over time?

As of December 2025, prices for Lisbon to Seattle flights are approximately 7% more expensive when compared to flights at the same time last year.

When to book flights from Lisbon to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Lisbon to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Lisbon to Seattle (LIS to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Lisbon to Seattle

Fastest flight time

18h 20m

Direct flights

None
The fastest flight from Lisbon to Seattle takes 18h 20m
There are no direct flights from Lisbon to Seattle. There are no popular flight routes from Lisbon to Seattle.
Search flight deals

  • How far is Lisbon Humberto Delgado to Seattle/Tacoma Intl by plane?

    A flight from Lisbon Humberto Delgado to Seattle/Tacoma Intl will travel around 5195.1 mi. In terms of flight time, this usually takes a little over 18h 20m.

  • When did momondo last update prices for flights from Lisbon Humberto Delgado Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Lisbon Humberto Delgado Airport to Seattle/Tacoma Intl Airport refresh daily.

  • How many operators does momondo search for flights from Lisbon Humberto Delgado Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Lisbon Humberto Delgado Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lisbon Humberto Delgado Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Lisbon to Seattle?

Best airlines flying from Lisbon to Seattle

Compare and see reviews for airlines that fly from Lisbon to Seattle with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $720Free CancellationRating
6.7
7,618 reviews
Search British Airways flights
United AirlinesPriceFrom $738Free CancellationRating
7.4
9,116 reviews
Search United Airlines flights
Air FrancePriceFrom $762Free CancellationRating
7.4
1,515 reviews
Search Air France flights
DeltaPriceFrom $775Free CancellationRating
7.9
8,016 reviews
Search Delta flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Puyallup
Redmond
Tukwila
Federal Way
Cle Elum
Lakewood
Fife
Centralia
Westport
Kirkland
Shoreline

Why use momondo?

Why should I use momondo to find a flight deal from Lisbon to Seattle?

Finding the right flight to Seattle from Lisbon is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

Can I find flights from Lisbon to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from Lisbon with this policy.

How can momondo help me find flights from Lisbon to Seattle?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Lisbon to Seattle.

I’m not ready to book a flight from Lisbon to Seattle right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Lisbon and alert you when they change.

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