How often are flights from Lisbon to Seattle delayed?

Historically, on average around 50% of flights between Lisbon and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 108 minutes.

Which layover airport offers the lowest fares from Lisbon to Seattle?

Flights via London (LHR) offer the lowest average round-trip price of $807.

What is the cheapest airline that flies from Lisbon Humberto Delgado to Seattle/Tacoma Intl?

British Airways, American Airlines, and Aer Lingus are the most popular carriers operating from Lisbon Humberto Delgado to Seattle/Tacoma Intl

What is the most punctual flight time for Lisbon to Seattle flights?

Generally, flights departing at night tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Which airport is the most popular layover for flights between Lisbon and Seattle?

London (LHR) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Lisbon to Seattle?

Flights connecting via London (LHR) have the shortest average one-way travel time: 14h 58m.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

What airlines fly to Seattle?

British Airways, Delta and Air France are the top three most popular airlines that fly to Seattle from Lisbon according to our data. British Airways is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 4 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Lisbon to Seattle?

London (LHR) has the shortest average layover time for this route: 1h 57m.

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?

There are 4 operators available for flights from Lisbon Humberto Delgado Airport to Seattle/Tacoma Intl Airport as of November 2025.

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.

$431 Cheap Flights from Lisbon to Seattle in 2025/26

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5:05 pm - 12:10 pmLIS-SEA

27h 05m2 stops

2:00 pm - 11:10 pmSEA-LIS

25h 10m3 stops

$783Multiple Airlines

Find Deal

Mon, Dec 15 - Tue, Dec 30

9:30 pm - 5:00 pmLIS-SEA

27h 30m2 stops

2:35 pm - 7:50 pmSEA-LIS

21h 15m2 stops

$807Multiple Airlines

Find Deal

Mon, Dec 15 - Tue, Dec 30

5:05 pm - 12:10 pmLIS-SEA

27h 05m2 stops

2:00 pm - 11:10 pmSEA-LIS

25h 10m3 stops

$811Multiple Airlines

Find Deal

Mon, Dec 15 - Tue, Dec 30

5:00 am - 12:10 pmLIS-SEA

15h 10m1 stop

2:00 pm - 2:30 pmSEA-LIS

16h 30m1 stop

$840Lufthansa

Find Deal

Mon, Dec 15 - Tue, Dec 30

11:20 am - 10:16 pmLIS-SEA

18h 56m1 stop

8:00 pm - 8:55 amSEA-LIS

28h 55m2 stops

$843Air Canada

Find Deal

Mon, Dec 15 - Tue, Dec 30

3:30 pm - 12:10 pmLIS-SEA

28h 40m3 stops

2:00 pm - 11:10 pmSEA-LIS

25h 10m3 stops

$848Multiple Airlines

Find Deal

Mon, Dec 15 - Tue, Dec 30

11:25 am - 12:10 pmLIS-SEA

32h 45m3 stops

2:00 pm - 11:10 pmSEA-LIS

25h 10m3 stops

$849Multiple Airlines

Find Deal

Mon, Dec 15 - Tue, Dec 30

5:00 am - 12:10 pmLIS-SEA

15h 10m1 stop

8:00 am - 10:15 amSEA-LIS

18h 15m1 stop

$855United Airlines

Find Deal

Mon, Dec 15 - Tue, Dec 30

5:00 am - 12:10 pmLIS-SEA

15h 10m1 stop

10:52 am - 10:15 amSEA-LIS

15h 23m2 stops

$856United Airlines

Find Deal

Mon, Dec 15 - Tue, Dec 30

5:00 am - 1:10 pmLIS-SEA

15h 10m1 stop

7:00 am - 8:20 amSEA-LIS

17h 20m2 stops

$857United Airlines

Find Deal

Thu, Mar 26 - Mon, Mar 30

United Airlines flights from Lisbon to Seattle

Our best United Airlines deals on Lisbon to Seattle flight tickets

United Airlines

Dec 15

LIS5:00 amLisbon Humberto Delgado

15h 10m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

Dec 30

SEA8:00 amSeattle/Tacoma Intl

18h 15m

1 stop

LIS10:15 amLisbon Humberto Delgado

$855

Find similar

United Airlines

Dec 15

LIS5:00 amLisbon Humberto Delgado

15h 10m

1 stop

SEA12:10 pmSeattle/Tacoma Intl

Dec 30

SEA10:52 amSeattle/Tacoma Intl

15h 23m

2 stops

LIS10:15 amLisbon Humberto Delgado

$856

Find similar

United Airlines

Dec 18

LIS11:55 amLisbon Humberto Delgado

17h 02m

1 stop

SEA8:57 pmSeattle/Tacoma Intl

Dec 30

SEA10:52 amSeattle/Tacoma Intl

15h 23m

2 stops

LIS10:15 amLisbon Humberto Delgado

$889

Find similar

Turkish Airlines flights from Lisbon to Seattle

Our best Turkish Airlines deals on Lisbon to Seattle flight tickets

Turkish Airlines

Mar 23

LIS11:40 amLisbon Humberto Delgado

37h 25m

1 stop

SEA6:05 pmSeattle/Tacoma Intl

Mar 27

SEA8:00 pmSeattle/Tacoma Intl

35h 50m

1 stop

LIS2:50 pmLisbon Humberto Delgado

$964

Find similar

Turkish Airlines

Mar 23

LIS11:40 amLisbon Humberto Delgado

37h 25m

1 stop

SEA6:05 pmSeattle/Tacoma Intl

Mar 27

SEA8:00 pmSeattle/Tacoma Intl

29h 50m

1 stop

LIS8:50 amLisbon Humberto Delgado

$965

Find similar

Turkish Airlines

Mar 1

LIS11:35 amLisbon Humberto Delgado

37h 30m

1 stop

SEA5:05 pmSeattle/Tacoma Intl

Mar 14

SEA8:00 pmSeattle/Tacoma Intl

36h 05m

1 stop

LIS3:05 pmLisbon Humberto Delgado

$3,395

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 12/15

5:05 pm-12:10 pm

2 stops27h 05m

Seattle/Tacoma Intl

Tue 12/30

2:00 pm-11:10 pm

3 stops25h 10m

$783

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 12/15

9:30 pm-5:00 pm

2 stops27h 30m

Seattle/Tacoma Intl

Tue 12/30

2:35 pm-7:50 pm

2 stops21h 15m

$807

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 12/15

5:05 pm-12:10 pm

2 stops27h 05m

Seattle/Tacoma Intl

Tue 12/30

2:00 pm-11:10 pm

3 stops25h 10m

$811

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 12/15

5:00 am-12:10 pm

1 stop15h 10m

Seattle/Tacoma Intl

Tue 12/30

2:00 pm-2:30 pm

1 stop16h 30m

$840

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 12/15

11:20 am-10:16 pm

1 stop18h 56m

Seattle/Tacoma Intl

Tue 12/30

8:00 pm-8:55 am

2 stops28h 55m

$843

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 12/15

3:30 pm-12:10 pm

3 stops28h 40m

Seattle/Tacoma Intl

Tue 12/30

2:00 pm-11:10 pm

3 stops25h 10m

$848

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 12/15

11:25 am-12:10 pm

3 stops32h 45m

Seattle/Tacoma Intl

Tue 12/30

2:00 pm-11:10 pm

3 stops25h 10m

$849

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 12/15

5:00 am-12:10 pm

1 stop15h 10m

Seattle/Tacoma Intl

Tue 12/30

8:00 am-10:15 am

1 stop18h 15m

$855

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 12/15

5:00 am-12:10 pm

1 stop15h 10m

Seattle/Tacoma Intl

Tue 12/30

10:52 am-10:15 am

2 stops15h 23m

$856

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

7:00 am-8:20 am

2 stops17h 20m

$857

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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

Prices

Airlines

Delays

Layovers

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 $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 November 2025, prices for Lisbon to Seattle flights are approximately 6% cheaper 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 15h 10m.
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?
There are 4 operators available for flights from Lisbon Humberto Delgado Airport to Seattle/Tacoma Intl Airport as of November 2025.
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?
momondo data reveals that the most frequently booked airline on the route from Lisbon to Seattle is British Airways, representing 33% of all bookings. The subsequent popular airlines are Delta at 26%, Air France at 23%, and United Airlines at 19%.

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 Airways	PriceFrom $720	Free Cancellation	Rating 6.7 7,516 reviews	Search British Airways flights
United Airlines	PriceFrom $738	Free Cancellation	Rating 7.4 9,015 reviews	Search United Airlines flights
Air France	PriceFrom $762	Free Cancellation	Rating 7.4 1,486 reviews	Search Air France flights
Delta	PriceFrom $775	Free Cancellation	Rating 7.9 8,009 reviews	Search Delta flights

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Puyallup

Marysville

Redmond

Tukwila

Lakewood

Federal Way

Fife

Cle Elum

Centralia

Kirkland

Westport

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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Cheap flights from Lisbon to Seattle from $431

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 2/23. 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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Our best United Airlines deals on Lisbon to Seattle flight tickets

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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 cheapest month to fly to Seattle?

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

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

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

How have Lisbon to Seattle flight prices changed over time?

As of November 2025, prices for Lisbon to Seattle flights are approximately 6% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Lisbon Humberto Delgado to Seattle/Tacoma Intl?

British Airways, American Airlines, and Aer Lingus are the most popular carriers operating from Lisbon Humberto Delgado to Seattle/Tacoma Intl

What airlines fly to Seattle?

How often are flights from Lisbon to Seattle delayed?

Historically, on average around 50% of flights between Lisbon and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 108 minutes.

What is the most punctual flight time for Lisbon to Seattle flights?

Generally, flights departing at night tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

Which airport is the most popular layover for flights between Lisbon and Seattle?

London (LHR) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Lisbon to Seattle?

Flights via London (LHR) offer the lowest average round-trip price of $807.

Which layover airport has the shortest travel time from Lisbon to Seattle?

Flights connecting via London (LHR) have the shortest average one-way travel time: 14h 58m.

Which layover airport has the shortest connection time from Lisbon to Seattle?

London (LHR) has the shortest average layover time for this route: 1h 57m.

When to book flights from Lisbon to Seattle

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

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

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

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?

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

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

Traveling to a place near Seattle?

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your Seattle 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Washington