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Cheap flights from Lisbon to Seattle from $421

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 11/13. 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
9:00 pm - 5:00 pmLIS-SEA
28h 00m3 stops
Multiple Airlines Logo
2:35 pm - 8:25 pmSEA-LIS
21h 50m3 stops
$815Multiple Airlines
Find Deal
Sun, Dec 7 - Mon, Dec 15
Virgin Atlantic Logo
10:00 am - 8:13 pmLIS-SEA
18h 13m1 stop
Virgin Atlantic Logo
10:25 pm - 8:00 amSEA-LIS
25h 35m1 stop
$825Virgin Atlantic
Find Deal
Sat, Dec 6 - Sat, Dec 13
Delta Logo
5:00 am - 11:45 amLIS-SEA
14h 45m1 stop
Delta Logo
1:40 pm - 11:20 amSEA-LIS
13h 40m1 stop
$865Delta
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Tue, Nov 11 - Tue, Nov 25
Delta Logo
5:00 am - 11:45 amLIS-SEA
14h 45m1 stop
Delta Logo
9:30 am - 11:20 amSEA-LIS
17h 50m2 stops
$866Delta
Find Deal
Tue, Nov 11 - Tue, Nov 25
American Airlines Logo
10:55 am - 9:53 pmLIS-SEA
17h 58m1 stop
American Airlines Logo
8:20 pm - 5:55 pmSEA-LIS
13h 35m1 stop
$879American Airlines
Find Deal
Thu, Mar 26 - Mon, Mar 30
American Airlines Logo
10:55 am - 9:53 pmLIS-SEA
17h 58m1 stop
American Airlines Logo
8:20 pm - 11:10 pmSEA-LIS
18h 50m1 stop
$880American Airlines
Find Deal
Thu, Mar 26 - Mon, Mar 30
United Airlines Logo
5:00 am - 1:10 pmLIS-SEA
15h 10m1 stop
United Airlines Logo
8:30 am - 8:20 amSEA-LIS
15h 50m2 stops
$884United Airlines
Find Deal
Thu, Mar 26 - Mon, Mar 30
British Airways Logo
10:40 am - 9:59 pmLIS-SEA
19h 19m1 stop
British Airways Logo
11:28 am - 2:50 pmSEA-LIS
19h 22m2 stops
$885British Airways
Find Deal
Sat, Dec 6 - Sat, Dec 13
United Airlines Logo
5:00 am - 1:10 pmLIS-SEA
15h 10m1 stop
United Airlines Logo
8:30 am - 8:20 amSEA-LIS
15h 50m2 stops
$888United Airlines
Find Deal
Thu, Mar 26 - Mon, Mar 30
British Airways Logo
8:55 am - 9:59 pmLIS-SEA
21h 04m1 stop
British Airways Logo
11:20 am - 2:45 pmSEA-LIS
19h 25m2 stops
$892British Airways
Find Deal
Thu, Dec 18 - Tue, Dec 30

United Airlines flights from Lisbon to Seattle

Our best United Airlines deals on Lisbon to Seattle flight tickets
United Airlines
Mar 26
LIS5:00 amLisbon Humberto Delgado
15h 10m
1 stop
SEA1:10 pmSeattle/Tacoma Intl
Mar 30
SEA8:30 amSeattle/Tacoma Intl
15h 50m
2 stops
LIS8:20 amLisbon Humberto Delgado
$884
Find similar
United Airlines
Mar 26
LIS5:00 amLisbon Humberto Delgado
15h 10m
1 stop
SEA1:10 pmSeattle/Tacoma Intl
Mar 30
SEA8:30 amSeattle/Tacoma Intl
15h 50m
2 stops
LIS8:20 amLisbon Humberto Delgado
$888
Find similar
United Airlines
Nov 17
LIS5:00 amLisbon Humberto Delgado
25h 40m
2 stops
SEA10:40 pmSeattle/Tacoma Intl
Nov 29
SEA12:06 amSeattle/Tacoma Intl
24h 04m
1 stop
LIS8:10 amLisbon Humberto Delgado
$910
Find similar

Delta flights from Lisbon to Seattle

Our best Delta deals on Lisbon to Seattle flight tickets
Delta
Nov 11
LIS5:00 amLisbon Humberto Delgado
14h 45m
1 stop
SEA11:45 amSeattle/Tacoma Intl
Nov 25
SEA1:40 pmSeattle/Tacoma Intl
13h 40m
1 stop
LIS11:20 amLisbon Humberto Delgado
$865
Find similar
Delta
Nov 11
LIS5:00 amLisbon Humberto Delgado
14h 45m
1 stop
SEA11:45 amSeattle/Tacoma Intl
Nov 25
SEA9:30 amSeattle/Tacoma Intl
17h 50m
2 stops
LIS11:20 amLisbon Humberto Delgado
$866
Find similar
Delta
Nov 11
LIS5:00 amLisbon Humberto Delgado
14h 45m
1 stop
SEA11:45 amSeattle/Tacoma Intl
Nov 25
SEA1:40 pmSeattle/Tacoma Intl
19h 50m
1 stop
LIS5:30 pmLisbon Humberto Delgado
$869
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 October 23, 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

Sun 12/7

9:00 pm-5:00 pm

3 stops28h 00m

Seattle/Tacoma Intl

Mon 12/15

2:35 pm-8:25 pm

3 stops21h 50m

$815

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 12/6

10:00 am-8:13 pm

1 stop18h 13m

Seattle/Tacoma Intl

Sat 12/13

10:25 pm-8:00 am

1 stop25h 35m

$825

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 11/11

5:00 am-11:45 am

1 stop14h 45m

Seattle/Tacoma Intl

Tue 11/25

1:40 pm-11:20 am

1 stop13h 40m

$865

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 11/11

5:00 am-11:45 am

1 stop14h 45m

Seattle/Tacoma Intl

Tue 11/25

9:30 am-11:20 am

2 stops17h 50m

$866

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 3/26

10:55 am-9:53 pm

1 stop17h 58m

Seattle/Tacoma Intl

Mon 3/30

8:20 pm-5:55 pm

1 stop13h 35m

$879

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 3/26

10:55 am-9:53 pm

1 stop17h 58m

Seattle/Tacoma Intl

Mon 3/30

8:20 pm-11:10 pm

1 stop18h 50m

$880

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 3/26

5:00 am-1:10 pm

1 stop15h 10m

Seattle/Tacoma Intl

Mon 3/30

8:30 am-8:20 am

2 stops15h 50m

$884

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 12/6

10:40 am-9:59 pm

1 stop19h 19m

Seattle/Tacoma Intl

Sat 12/13

11:28 am-2:50 pm

2 stops19h 22m

$885

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 3/26

5:00 am-1:10 pm

1 stop15h 10m

Seattle/Tacoma Intl

Mon 3/30

8:30 am-8:20 am

2 stops15h 50m

$888

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 12/18

8:55 am-9:59 pm

1 stop21h 04m

Seattle/Tacoma Intl

Tue 12/30

11:20 am-2:45 pm

2 stops19h 25m

$892

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 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 typical price of a round-trip flight between Lisbon and Seattle?

What is the cheapest month to fly to Seattle?

In general, December 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 $795. If you don’t want to visit Seattle in December, then you should wait until April to fly from Lisbon, when ticket prices are also cheap, with an average price of $800.

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 $946 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 $792 on momondo.

How have Lisbon to Seattle flight prices changed over time?

As of October 2025, prices for Lisbon to Seattle flights are approximately 18% 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

Direct flights

None
There are no direct flights from Lisbon to Seattle. There are no popular flight routes from Lisbon to Seattle.
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  • 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 14h 35m.

  • 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
7,468 reviews
Search British Airways flights
United AirlinesPriceFrom $738Free CancellationRating
7.4
8,992 reviews
Search United Airlines flights
Air FrancePriceFrom $762Free CancellationRating
7.4
1,477 reviews
Search Air France flights
DeltaPriceFrom $775Free CancellationRating
7.9
7,981 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
Tukwila
Lakewood
Federal Way
Kirkland
Fife
Redmond
Cle Elum
Centralia
Shoreline
Westport

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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