What are the cheapest airlines flying from Lisbon to Seattle round-trip?

Flying on British Airways is currently your cheapest option to Seattle, with prices starting at $773. Additional round-trip tickets that might be worth considering are offered by American Airlines and Finnair, with the lowest prices starting at $778 and $784, respectively. British Airways is priced at 19% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Lisbon to Seattle one-way?

To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at $668. Turkish Airlines flights start at $674 while deals on Finnair start at $729 one-way.

What is the cheapest day to fly from Lisbon to Seattle?

Travelers seeking maximum savings on their Lisbon to Seattle flight should consider departing on Thursday evenings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Lisbon to Seattle?

American Airlines, Air France and British Airways are the most popular airlines when flying from Lisbon to Seattle.

What is the cheapest day to fly round-trip from Lisbon to Seattle?

Friday flights are generally found to be more expensive for flights from Lisbon to Seattle. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Seattle.

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

Users have found that booking a flight from Lisbon to Seattle at least 51 days early can save you up to 45% on average compared to booking a flight this week. If booking 51 days before your flight isn’t an option for you, users have found flights from Lisbon to Seattle for as little as $809 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $966 for flights departing within the next 3 days.

What is the cheapest month to fly from Lisbon to Seattle?

December can be a great time to fly to Seattle from Lisbon with a flight ticket averaging about $956. Cheapflights users have found deals in the month of December for as cheap as $745. The most expensive prices can be found in the month of November.

Most accurate provider : When it comes to deals on Lisbon-Seattle flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Lisbon-Seattle flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Lisbon-Seattle flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Lisbon-Seattle flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Lisbon-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Lisbon to Seattle that include hotel bookings?

Yes. In addition to deals on Lisbon to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Lisbon to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Lisbon to Seattle.

Can I find deals for business class flights from Lisbon to Seattle?

Yes. Cheapflights offers flight deals from Lisbon to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$320+ Flights from Lisbon to Seattle

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Lisbon to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Lisbon Humberto Delgado to Seattle/Tacoma Intl are usually found in December or April, booked 51 days in advance, depart on a Wednesday or Thursday and return on a Monday

Cheap flight deals from Lisbon to Seattle

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$771 (Iberia)
One-way from	$320 (Kiwi.com)
Popular in	November
Cheapest in	December
Average price	$800

Provider with most accurate pricing for Lisbon Humberto Delgado-Seattle/Tacoma Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lisbon Humberto Delgado-Seattle/Tacoma Intl flights.

Search Deals

From Lisbon Humberto Delgado to Seattle/Tacoma Intl

Search Deals

One-way flight from Lisbon Humberto Delgado to Seattle/Tacoma Intl

Search Deals

High demand for flights, 2% potential price rise

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($19 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Lisbon to Seattle

Cheapest flights from Lisbon to Seattle
Explore the most affordable flight options available from Lisbon to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

Fri 9/56:45 amLIS - SEA

1 stop15h 05mMultiple Airlines

Fri 9/194:20 pmSEA - LIS

1 stop32h 40mMultiple Airlines

Deal found 4/17

$677

Tue 9/911:05 amLIS - SEA

1 stop18h 33mBritish Airways

Wed 10/11:30 pmSEA - LIS

1 stop25h 40mBritish Airways

Deal found 4/17

$770

Thu 5/811:05 amLIS - SEA

2 stops38h 23mAmerican Airlines

Fri 5/167:30 amSEA - LIS

2 stops31h 40mAmerican Airlines

Deal found 4/17

$781

Tue 9/306:35 amLIS - SEA

2 stops25h 15mIberia

Sat 10/183:13 pmSEA - LIS

2 stops20h 52mIberia

Deal found 4/17

$801

Fri 5/95:00 amLIS - SEA

1 stop18h 57mDelta

Wed 5/147:16 amSEA - LIS

2 stops19h 59mDelta

Deal found 4/17

$815

Tue 6/175:00 amLIS - SEA

1 stop14h 40mKLM

Tue 7/81:50 pmSEA - LIS

1 stop25h 00mKLM

Deal found 4/17

$822

Sat 5/1010:00 amLIS - SEA

1 stop18h 23mAir France

Thu 5/151:30 pmSEA - LIS

1 stop17h 20mAir France

Deal found 4/17

$833

Tue 5/65:05 amLIS - SEA

2 stops17h 08mLufthansa

Sun 5/117:00 amSEA - LIS

2 stops31h 20mLufthansa

Deal found 4/17

$847

Mon 6/211:25 amLIS - SEA

1 stop16h 12mUnited Airlines

Mon 6/167:20 amSEA - LIS

1 stop18h 00mUnited Airlines

Deal found 4/17

$853

Sat 5/105:55 amLIS - SEA

2 stops23h 36mSWISS

Tue 5/1312:45 pmSEA - LIS

2 stops26h 35mSWISS

Deal found 4/17

$872

Sat 5/1011:25 amLIS - SEA

1 stop16h 12mAir Canada

Sat 5/175:30 amSEA - LIS

2 stops32h 20mAir Canada

Deal found 4/17

$874

Fri 5/96:35 amLIS - SEA

2 stops24h 34mFinnair

Fri 5/167:30 amSEA - LIS

2 stops31h 40mFinnair

Deal found 4/17

$891

Best flights from Lisbon to Seattle
Discover carefully curated flight deals from Lisbon to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2025.

Fri 5/28:25 amLIS - SEA

2 stops24h 26mMultiple Airlines

Sun 5/181:30 pmSEA - LIS

1 stop20h 25mMultiple Airlines

Deal found 4/17

$771

Thu 4/2411:05 amLIS - SEA

1 stop18h 54mBritish Airways

Wed 5/78:20 pmSEA - LIS

1 stop18h 50mBritish Airways

Deal found 4/17

$773

Thu 5/227:20 amLIS - SEA

2 stops34h 55mAmerican Airlines

Mon 5/266:20 amSEA - LIS

2 stops32h 50mAmerican Airlines

Deal found 4/16

$778

Wed 5/214:30 pmLIS - SEA

1 stop31h 30mFinnair

Mon 5/266:14 amSEA - LIS

2 stops32h 56mFinnair

Deal found 4/16

$784

Thu 5/85:00 amLIS - SEA

1 stop18h 57mDelta

Tue 5/137:25 amSEA - LIS

2 stops17h 25mDelta

Deal found 4/16

$811

Sat 5/1010:00 amLIS - SEA

1 stop18h 23mAir France

Thu 5/151:30 pmSEA - LIS

1 stop13h 45mAir France

Deal found 4/16

$829

Wed 5/76:35 amLIS - SEA

2 stops26h 20mIberia

Sat 5/172:20 pmSEA - LIS

2 stops25h 05mIberia

Deal found 4/17

$830

Thu 5/85:05 amLIS - SEA

2 stops17h 08mLufthansa

Sun 5/117:00 amSEA - LIS

2 stops31h 20mLufthansa

Deal found 4/16

$843

Fri 5/236:15 amLIS - SEA

1 stop18h 44mUnited Airlines

Mon 5/266:25 amSEA - LIS

2 stops17h 55mUnited Airlines

Deal found 4/16

$853

Tue 5/2011:25 amLIS - SEA

1 stop16h 12mAir Canada

Sat 5/317:20 amSEA - LIS

1 stop17h 55mAir Canada

Deal found 4/16

$866

Sat 5/105:55 amLIS - SEA

2 stops23h 36mSWISS

Wed 5/142:40 pmSEA - LIS

2 stops24h 40mSWISS

Deal found 4/16

$868

Tue 6/34:30 pmLIS - SEA

1 stop32h 45mTurkish Airlines

Fri 6/67:10 pmSEA - LIS

1 stop36h 20mTurkish Airlines

Deal found 4/17

$927

Last-minute flights from Lisbon to Seattle
Discover last-minute flight deals from Lisbon to Seattle. Data last updated April 17, 2025 and is based on user searches.

Thu 4/2411:05 amLIS - SEA

1 stop18h 54mBritish Airways

Wed 5/78:20 pmSEA - LIS

1 stop18h 50mBritish Airways

Deal found 4/17

$773

Thu 4/245:40 amLIS - SEA

2 stops19h 05mDelta

Wed 5/79:39 amSEA - LIS

2 stops20h 56mDelta

Deal found 4/17

$832

Thu 4/245:05 amLIS - SEA

3 stops23h 35mMultiple Airlines

Wed 5/77:00 pmSEA - LIS

3 stops34h 45mMultiple Airlines

Deal found 4/17

$1,184

Fri 5/28:25 amLIS - SEA

2 stops24h 26mMultiple Airlines

Sun 5/181:30 pmSEA - LIS

1 stop20h 25mMultiple Airlines

Deal found 4/17

$771

Tue 5/65:05 amLIS - SEA

2 stops17h 08mLufthansa

Sun 5/117:00 amSEA - LIS

2 stops31h 20mLufthansa

Deal found 4/17

$847

Wed 5/76:35 amLIS - SEA

2 stops26h 20mIberia

Sat 5/172:20 pmSEA - LIS

2 stops25h 05mIberia

Deal found 4/17

$830

Thu 5/811:05 amLIS - SEA

2 stops38h 23mAmerican Airlines

Fri 5/167:30 amSEA - LIS

2 stops31h 40mAmerican Airlines

Deal found 4/17

$781

Fri 5/95:00 amLIS - SEA

1 stop18h 57mDelta

Wed 5/147:16 amSEA - LIS

2 stops19h 59mDelta

Deal found 4/17

$815

Fri 5/96:35 amLIS - SEA

2 stops24h 34mFinnair

Fri 5/167:30 amSEA - LIS

2 stops31h 40mFinnair

Deal found 4/17

$891

Sat 5/1010:00 amLIS - SEA

1 stop18h 23mAir France

Thu 5/151:30 pmSEA - LIS

1 stop17h 20mAir France

Deal found 4/17

$833

Sat 5/1011:25 amLIS - SEA

1 stop16h 12mUnited Airlines

Tue 5/136:15 amSEA - LIS

2 stops18h 05mUnited Airlines

Deal found 4/17

$858

Sat 5/105:55 amLIS - SEA

2 stops23h 36mSWISS

Tue 5/1312:45 pmSEA - LIS

2 stops26h 35mSWISS

Deal found 4/17

$872

One-way flights from Lisbon to Seattle
Search for one-way flight options from Lisbon to Seattle. Find affordable one-way fares based on user searches. Data last updated April 17, 2025.

Wed 5/79:35 pmLIS - SEA

3 stops55h 07mMultiple Airlines

Deal found 4/16

$320

Sat 6/2111:25 amLIS - SEA

1 stop14h 25mAer Lingus

Deal found 4/17

$668

Thu 7/35:55 amLIS - SEA

1 stop19h 20mTurkish Airlines

Deal found 4/16

$674

Fri 5/306:35 amLIS - SEA

2 stops22h 28mFinnair

Deal found 4/16

$729

Thu 5/296:35 amLIS - SEA

2 stops22h 28mIberia

Deal found 4/16

$735

Mon 5/267:15 amLIS - SEA

1 stop19h 05mBritish Airways

Deal found 4/16

$740

Thu 7/38:35 amLIS - SEA

2 stops20h 05mIcelandair

Deal found 4/17

$929

Sat 7/129:50 amLIS - SEA

3 stops34h 56mUnited Airlines

Deal found 4/17

$1,131

Cheapflights Fare Finder

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

Fri 9/5

6:45 am-1:50 pm

1 stop15h 05m

Seattle/Tacoma Intl

Fri 9/19

4:20 pm-9:00 am

1 stop32h 40m

$677

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 9/9

11:05 am-9:38 pm

1 stop18h 33m

Seattle/Tacoma Intl

Wed 10/1

1:30 pm-11:10 pm

1 stop25h 40m

$770

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 5/8

11:05 am-5:28 pm

2 stops38h 23m

Seattle/Tacoma Intl

Fri 5/16

7:30 am-11:10 pm

2 stops31h 40m

$781

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 9/30

6:35 am-11:50 pm

2 stops25h 15m

Seattle/Tacoma Intl

Sat 10/18

3:13 pm-8:05 pm

2 stops20h 52m

$801

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 5/9

5:00 am-3:57 pm

1 stop18h 57m

Seattle/Tacoma Intl

Wed 5/14

7:16 am-11:15 am

2 stops19h 59m

$815

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 6/17

5:00 am-11:40 am

1 stop14h 40m

Seattle/Tacoma Intl

Tue 7/8

1:50 pm-10:50 pm

1 stop25h 00m

$822

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 5/10

10:00 am-8:23 pm

1 stop18h 23m

Seattle/Tacoma Intl

Thu 5/15

1:30 pm-2:50 pm

1 stop17h 20m

$833

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 5/6

5:05 am-2:13 pm

2 stops17h 08m

Seattle/Tacoma Intl

Sun 5/11

7:00 am-10:20 pm

2 stops31h 20m

$847

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 6/2

11:25 am-7:37 pm

1 stop16h 12m

Seattle/Tacoma Intl

Mon 6/16

7:20 am-9:20 am

1 stop18h 00m

$853

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sat 5/10

5:55 am-9:31 pm

2 stops23h 36m

Seattle/Tacoma Intl

Wed 5/14

12:45 pm-11:20 pm

2 stops26h 35m

$872

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 24 results

Compare providers for flights from Lisbon to Seattle

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Lisbon to Seattle in April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Lisbon-Seattle flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Lisbon-Seattle flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Lisbon-Seattle flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Lisbon-Seattle flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Lisbon-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Lisbon to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Lisbon with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Lisbon to Seattle

How far ahead should I book a flight from Lisbon to Seattle?

The price you pay for your flight from Lisbon to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 50 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Lisbon to Seattle?

Currently, January is the cheapest month in which you can book a flight from Lisbon to Seattle (average of $238). Flying from Lisbon to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LIS to SEA?

Unlike in the morning, when flights are generally more expensive, you can save up to 18% on flights from Lisbon to Seattle by exploring options for tickets in the afternoon.

Rainfall in Seattle by month

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

7,917 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair

7.6

Good

1,269 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France

7.5

Good

1,435 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS

7.5

Good

1,580 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,667 reviews

Delta

8.0

Very good

7,917 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

What are the cheapest airlines flying from Lisbon to Seattle round-trip?
Flying on British Airways is currently your cheapest option to Seattle, with prices starting at $773. Additional round-trip tickets that might be worth considering are offered by American Airlines and Finnair, with the lowest prices starting at $778 and $784, respectively. British Airways is priced at 19% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Lisbon to Seattle one-way?
To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at $668. Turkish Airlines flights start at $674 while deals on Finnair start at $729 one-way.
Can I find deals for flights from Lisbon to Seattle that include hotel bookings?
Yes. In addition to deals on Lisbon to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Lisbon to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Lisbon to Seattle.
Can I find deals for business class flights from Lisbon to Seattle?
Yes. Cheapflights offers flight deals from Lisbon to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Lisbon to Seattle?
Currently, January is the cheapest month in which you can book a flight from Lisbon to Seattle (average of $238). Flying from Lisbon to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

SeaTac

Tukwila

Tacoma

Renton

Lakewood

Ocean Shores

Lacey

Leavenworth

Federal Way

Olympia

Shoreline

Cle Elum

Centralia

Aberdeen

Kent

Lynnwood

Shelton

Silverdale

Redmond

Issaquah

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Lisbon to Seattle

Lisbon to Portland flights

Porto to Seattle flights

Complete your trip

Seattle car rentals

Seattle/Tacoma Intl Airport car rentals

Kenmore Air Harbor Airport car rentals

Yakima car rentals

Spokane car rentals

Bellingham car rentals

Pasco car rentals

Walla Walla car rentals

Wenatchee car rentals

Downtown car rentals

Capitol Hill car rentals

University District car rentals

Other flights to Seattle

Top 5 airlines flying from Lisbon to Seattle

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$717	Average$823	FlexibilityNo cancel fee	On-time71%
British Airways	Cheapest$720	Average$1,080	FlexibilityNo cancel fee	On-time70%
United Airlines	Cheapest$738	Average$867	FlexibilityNo cancel fee	On-time69%
Air France	Cheapest$762	Average$1,111	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$765	Average$929	FlexibilityNo cancel fee	On-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$320+ Cheap flights from Lisbon (LIS) to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Lisbon to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lisbon Humberto Delgado to Seattle/Tacoma Intl are usually found in December or April, booked 51 days in advance, depart on a Wednesday or Thursday and return on a Monday

Cheap flight deals from Lisbon to Seattle

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Lisbon to Seattle

Cheapest flights from Lisbon to SeattleExplore the most affordable flight options available from Lisbon to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

Explore the most affordable flight options available from Lisbon to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Lisbon to Seattle that are best for you.

Compare providers for flights from Lisbon to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Lisbon to Seattle in April.

Best time to book a flight from Lisbon to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Lisbon with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Lisbon to Seattle

How far ahead should I book a flight from Lisbon to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Lisbon to Seattle. Price data was last updated on April 11, 2025.

What is the cheapest month to book a flight from Lisbon to Seattle?

What is the cheapest time of day to fly from LIS to SEA?

Find hourly flight availability from Lisbon to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2025.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

Reviews of airlines servicing Seattle

Related info for your journey

Find useful and relevant information for your journey from Lisbon to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Lisbon to Seattle round-trip?

What are the cheapest airlines to fly from Lisbon to Seattle one-way?

Can I find deals for flights from Lisbon to Seattle that include hotel bookings?

How can I find direct flights from Lisbon to Seattle?

Can I find deals for business class flights from Lisbon to Seattle?

What is the cheapest month to book a flight from Lisbon to Seattle?

Traveling to a place near Lisbon?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Lisbon to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Lisbon to Seattle

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Lisbon to Seattle
Explore the most affordable flight options available from Lisbon to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.