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Cheap flights from Lisbon to Seattle from $321

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 3/4. 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 Lisbon to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:00 am - 6:00 pm
LIS
-
SEA
18h 00m
2 stops
Multiple Airlines Logo
3:35 pm - 7:25 pm
SEA
-
LIS
20h 50m
2 stops
$754Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
7:00 am - 6:00 pm
LIS
-
SEA
18h 00m
2 stops
Multiple Airlines Logo
3:35 pm - 8:25 pm
SEA
-
LIS
21h 50m
3 stops
$764Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
7:50 pm - 4:40 pm
LIS
-
SEA
27h 50m
2 stops
Multiple Airlines Logo
3:40 pm - 9:10 pm
SEA
-
LIS
21h 30m
2 stops
$831Multiple Airlines
Fri, Mar 13 - Sun, Mar 29
Multiple Airlines Logo
7:50 pm - 4:40 pm
LIS
-
SEA
27h 50m
2 stops
Multiple Airlines Logo
3:40 pm - 10:05 pm
SEA
-
LIS
22h 25m
3 stops
$832Multiple Airlines
Fri, Mar 13 - Sun, Mar 29
Multiple Airlines Logo
7:25 pm - 10:29 am
LIS
-
SEA
46h 04m
2 stops
Multiple Airlines Logo
7:00 pm - 9:20 pm
SEA
-
LIS
18h 20m
1 stop
$851Multiple Airlines
Thu, Mar 26 - Wed, Apr 8
Delta Logo
5:00 am - 11:40 am
LIS
-
SEA
14h 40m
1 stop
Delta Logo
7:10 am - 11:20 am
SEA
-
LIS
20h 10m
2 stops
$870Delta
Tue, Feb 17 - Tue, Feb 24
Delta Logo
5:00 am - 11:40 am
LIS
-
SEA
14h 40m
1 stop
Delta Logo
6:00 am - 11:20 am
SEA
-
LIS
21h 20m
2 stops
$871Delta
Thu, Feb 19 - Wed, Mar 4
KLM Logo
5:00 am - 12:35 pm
LIS
-
SEA
14h 35m
1 stop
KLM Logo
4:05 pm - 9:55 am
SEA
-
LIS
34h 50m
1 stop
$876KLM
Fri, Mar 20 - Fri, Mar 27
Delta Logo
5:30 am - 7:00 pm
LIS
-
SEA
21h 30m
2 stops
Delta Logo
1:30 pm - 5:30 pm
SEA
-
LIS
20h 00m
2 stops
$881Delta
Tue, Feb 17 - Tue, Feb 24
Delta Logo
5:30 am - 7:00 pm
LIS
-
SEA
21h 30m
2 stops
Delta Logo
6:00 am - 11:20 am
SEA
-
LIS
21h 20m
2 stops
$882Delta
Thu, Feb 19 - Wed, Mar 4

Delta flights from Lisbon to Seattle

Our best Delta deals on Lisbon to Seattle flight tickets
Delta
Feb 17
LIS5:00 amLisbon Humberto Delgado
14h 40m
1 stop
SEA11:40 amSeattle/Tacoma Intl
Feb 24
SEA7:10 amSeattle/Tacoma Intl
20h 10m
2 stops
LIS11:20 amLisbon Humberto Delgado
$870
Delta
Feb 19
LIS5:00 amLisbon Humberto Delgado
14h 40m
1 stop
SEA11:40 amSeattle/Tacoma Intl
Mar 4
SEA6:00 amSeattle/Tacoma Intl
21h 20m
2 stops
LIS11:20 amLisbon Humberto Delgado
$871
Delta
Feb 17
LIS5:30 amLisbon Humberto Delgado
21h 30m
2 stops
SEA7:00 pmSeattle/Tacoma Intl
Feb 24
SEA1:30 pmSeattle/Tacoma Intl
20h 00m
2 stops
LIS5:30 pmLisbon Humberto Delgado
$881

KLM flights from Lisbon to Seattle

Our best KLM deals on Lisbon to Seattle flight tickets
KLM
Mar 20
LIS5:00 amLisbon Humberto Delgado
14h 35m
1 stop
SEA12:35 pmSeattle/Tacoma Intl
Mar 27
SEA4:05 pmSeattle/Tacoma Intl
34h 50m
1 stop
LIS9:55 amLisbon Humberto Delgado
$876
KLM
Mar 19
LIS5:00 amLisbon Humberto Delgado
14h 35m
1 stop
SEA12:35 pmSeattle/Tacoma Intl
Mar 26
SEA4:05 pmSeattle/Tacoma Intl
19h 40m
1 stop
LIS6:45 pmLisbon Humberto Delgado
$914
KLM
Mar 19
LIS11:25 amLisbon Humberto Delgado
32h 10m
1 stop
SEA12:35 pmSeattle/Tacoma Intl
Mar 26
SEA4:05 pmSeattle/Tacoma Intl
19h 40m
1 stop
LIS6:45 pmLisbon Humberto Delgado
$921

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 February 3, 2026.
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 3/19

7:00 am-6:00 pm

2 stops18h 00m

Seattle/Tacoma Intl

Thu 3/26

3:35 pm-7:25 pm

2 stops20h 50m

$754

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 3/19

7:00 am-6:00 pm

2 stops18h 00m

Seattle/Tacoma Intl

Thu 3/26

3:35 pm-8:25 pm

3 stops21h 50m

$764

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 3/13

7:50 pm-4:40 pm

2 stops27h 50m

Seattle/Tacoma Intl

Sun 3/29

3:40 pm-9:10 pm

2 stops21h 30m

$831

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 3/13

7:50 pm-4:40 pm

2 stops27h 50m

Seattle/Tacoma Intl

Sun 3/29

3:40 pm-10:05 pm

3 stops22h 25m

$832

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 3/26

7:25 pm-10:29 am

2 stops46h 04m

Seattle/Tacoma Intl

Wed 4/8

7:00 pm-9:20 pm

1 stop18h 20m

$851

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 2/17

5:00 am-11:40 am

1 stop14h 40m

Seattle/Tacoma Intl

Tue 2/24

7:10 am-11:20 am

2 stops20h 10m

$870

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 2/19

5:00 am-11:40 am

1 stop14h 40m

Seattle/Tacoma Intl

Wed 3/4

6:00 am-11:20 am

2 stops21h 20m

$871

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 3/20

5:00 am-12:35 pm

1 stop14h 35m

Seattle/Tacoma Intl

Fri 3/27

4:05 pm-9:55 am

1 stop34h 50m

$876

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 2/17

5:30 am-7:00 pm

2 stops21h 30m

Seattle/Tacoma Intl

Tue 2/24

1:30 pm-5:30 pm

2 stops20h 00m

$881

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 2/19

5:30 am-7:00 pm

2 stops21h 30m

Seattle/Tacoma Intl

Wed 3/4

6:00 am-11:20 am

2 stops21h 20m

$882

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, May 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 $804. If you don’t want to visit Seattle in May, then you should wait until April to fly from Lisbon, when ticket prices are also cheap, with an average price of $807.

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 $951 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 $796 on momondo.

How have Lisbon to Seattle flight prices changed over time?

As of February 2026, prices for Lisbon to Seattle flights are approximately 32% 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 00m

Direct flights

None
The fastest flight from Lisbon to Seattle takes 18h 00m
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 00m.

  • 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
7,712 reviews
Search British Airways flights
United AirlinesPriceFrom $738Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
Air FrancePriceFrom $762Free CancellationRating
7.4
1,531 reviews
Search Air France flights
DeltaPriceFrom $775Free CancellationRating
7.9
8,138 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
Redmond
Puyallup
Cle Elum
Tukwila
Lakewood
Federal Way
Westport
Kirkland
Centralia
Fife
Tumwater

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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