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 $720. Additional round-trip tickets that might be worth considering are offered by United Airlines and Air France, with the lowest prices starting at $738 and $762, respectively. British Airways is priced at 22% lower than the current average price of a flight leaving 3 months from now.

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.

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.

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).

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

Air France, British Airways and Delta 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 50 days early can save you up to 73% on average compared to booking a flight this week. If booking 50 days before your flight isn’t an option for you, users have found flights from Lisbon to Seattle for as little as $884 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 $959 for flights departing within the next 3 days.

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

April can be a great time to fly to Seattle from Lisbon with a flight ticket averaging about $933. Cheapflights users have found deals in the month of April for as cheap as $692. The most expensive prices can be found in the month of July.

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.

$416+ Cheap Flights from Lisbon to Seattle

Q: How much does it cost to fly round-trip from Lisbon to Seattle?

Airfare is below average for this route at the moment. Lisbon to Seattle flights typically cost between $1,074 and $1,252 in September. The cheapest round-trip price found within the last 3 days was $697 on Aer Lingus (Sep 7-Sep 22).

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 April or May, booked 49 days in advance, depart on a Wednesday or Thursday and return on a Monday

Cheap flight deals from Lisbon to Seattle

Round-trip from	$697 (Rumbo)
One-way from	$416 (Kiwi.com)
Popular in	July
Cheapest in	April
Average price	$1,137

From Lisbon Humberto Delgado to Seattle/Tacoma Intl

Search Deals

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

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($144 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 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 August 15, 2025.

Sun 9/710:15 pmLIS - SEA

1 stop27h 35mAer Lingus

Mon 9/227:35 pmSEA - LIS

1 stop18h 00mAer Lingus

Deal found 8/15

$697

Mon 10/69:25 pmLIS - SEA

2 stops29h 49mMultiple Airlines

Sat 11/110:05 amSEA - LIS

1 stop18h 35mMultiple Airlines

Deal found 8/14

$741

Mon 10/69:25 pmLIS - SEA

2 stops29h 49mMultiple Airlines

Mon 10/2711:07 amSEA - LIS

1 stop15h 48mMultiple Airlines

Deal found 8/14

$742

Tue 10/79:20 pmLIS - SEA

2 stops56h 52mMultiple Airlines

Tue 10/2811:07 amSEA - LIS

1 stop15h 48mMultiple Airlines

Deal found 8/14

$755

Fri 10/175:55 amLIS - SEA

2 stops24h 17mMultiple Airlines

Wed 10/2210:00 amSEA - LIS

2 stops29h 20mMultiple Airlines

Deal found 8/14

$756

Tue 10/79:20 pmLIS - SEA

2 stops56h 52mMultiple Airlines

Mon 10/2711:07 amSEA - LIS

1 stop15h 48mMultiple Airlines

Deal found 8/15

$767

Thu 10/96:40 amLIS - SEA

2 stops23h 32mMultiple Airlines

Sat 11/110:05 amSEA - LIS

1 stop18h 35mMultiple Airlines

Deal found 8/14

$786

Mon 9/810:30 pmLIS - SEA

2 stops28h 51mMultiple Airlines

Tue 9/236:41 amSEA - LIS

1 stop20h 09mMultiple Airlines

Deal found 8/14

$788

Tue 9/235:05 amLIS - SEA

2 stops22h 49mMultiple Airlines

Tue 9/309:55 amSEA - LIS

2 stops20h 50mMultiple Airlines

Deal found 8/13

$792

Wed 10/85:55 amLIS - SEA

2 stops24h 17mMultiple Airlines

Wed 10/297:00 amSEA - LIS

2 stops24h 35mMultiple Airlines

Deal found 8/14

$795

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 August 15, 2025.

Sun 9/710:15 pmLIS - SEA

1 stop27h 35mAer Lingus

Mon 9/227:35 pmSEA - LIS

1 stop18h 00mAer Lingus

Deal found 8/15

$697

Mon 10/69:25 pmLIS - SEA

2 stops29h 49mMultiple Airlines

Sat 11/110:05 amSEA - LIS

1 stop18h 35mMultiple Airlines

Deal found 8/14

$741

Mon 10/69:25 pmLIS - SEA

2 stops29h 49mMultiple Airlines

Tue 10/2811:07 amSEA - LIS

1 stop15h 48mMultiple Airlines

Deal found 8/14

$741

Mon 10/69:25 pmLIS - SEA

2 stops29h 49mMultiple Airlines

Sun 10/2611:07 amSEA - LIS

1 stop15h 48mMultiple Airlines

Deal found 8/14

$742

Mon 10/69:25 pmLIS - SEA

2 stops29h 49mMultiple Airlines

Mon 10/2711:07 amSEA - LIS

1 stop15h 48mMultiple Airlines

Deal found 8/14

$742

Fri 10/175:55 amLIS - SEA

2 stops24h 17mMultiple Airlines

Wed 10/2210:00 amSEA - LIS

2 stops29h 20mMultiple Airlines

Deal found 8/15

$755

Tue 10/79:20 pmLIS - SEA

2 stops56h 52mMultiple Airlines

Tue 10/2811:07 amSEA - LIS

1 stop15h 48mMultiple Airlines

Deal found 8/14

$755

Tue 10/79:20 pmLIS - SEA

2 stops56h 52mMultiple Airlines

Mon 10/2711:07 amSEA - LIS

1 stop15h 48mMultiple Airlines

Deal found 8/15

$767

Thu 10/96:40 amLIS - SEA

2 stops23h 32mMultiple Airlines

Sat 11/110:05 amSEA - LIS

1 stop18h 35mMultiple Airlines

Deal found 8/14

$786

Thu 10/96:40 amLIS - SEA

2 stops23h 32mMultiple Airlines

Sun 10/2611:07 amSEA - LIS

1 stop15h 48mMultiple Airlines

Deal found 8/14

$786

Thu 10/96:40 amLIS - SEA

2 stops23h 32mMultiple Airlines

Mon 10/2711:07 amSEA - LIS

1 stop15h 48mMultiple Airlines

Deal found 8/14

$786

Last-minute flights from Lisbon to Seattle
Discover last-minute flight deals from Lisbon to Seattle. Data last updated August 15, 2025 and is based on user searches.

Thu 8/215:40 amLIS - SEA

1 stop13h 35mAir France

Thu 9/46:45 pmSEA - LIS

1 stop15h 05mAir France

Deal found 8/13

$1,064

Thu 8/215:40 amLIS - SEA

1 stop13h 35mDelta

Thu 9/46:10 amSEA - LIS

2 stops21h 05mDelta

Deal found 8/13

$1,066

Sun 9/710:15 pmLIS - SEA

1 stop27h 35mAer Lingus

Mon 9/227:35 pmSEA - LIS

1 stop18h 00mAer Lingus

Deal found 8/15

$697

Sun 9/75:55 amLIS - SEA

2 stops20h 41mSWISS

Mon 9/222:29 pmSEA - LIS

2 stops24h 51mSWISS

Deal found 8/15

$841

Mon 9/810:30 pmLIS - SEA

2 stops28h 51mMultiple Airlines

Tue 9/236:41 amSEA - LIS

1 stop20h 09mMultiple Airlines

Deal found 8/14

$788

Mon 9/85:05 amLIS - SEA

1 stop14h 50mUnited Airlines

Tue 9/236:30 amSEA - LIS

1 stop17h 50mUnited Airlines

Deal found 8/15

$829

Mon 9/85:05 amLIS - SEA

1 stop14h 50mLufthansa

Tue 9/232:20 pmSEA - LIS

1 stop23h 45mLufthansa

Deal found 8/14

$839

Thu 9/1112:15 pmLIS - SEA

1 stop16h 20mMultiple Airlines

Fri 9/2610:10 amSEA - LIS

2 stops38h 05mMultiple Airlines

Deal found 8/13

$806

Fri 9/1212:15 pmLIS - SEA

1 stop18h 24mMultiple Airlines

Sat 9/209:39 pmSEA - LIS

2 stops36h 46mMultiple Airlines

Deal found 8/14

$813

Wed 9/175:05 amLIS - SEA

1 stop14h 50mUnited Airlines

Wed 10/812:00 pmSEA - LIS

1 stop15h 05mUnited Airlines

Deal found 8/14

$851

Tue 9/235:05 amLIS - SEA

2 stops22h 49mMultiple Airlines

Tue 9/309:55 amSEA - LIS

2 stops20h 50mMultiple Airlines

Deal found 8/13

$792

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 August 15, 2025.

Sat 11/159:05 amLIS - SEA

2 stops33h 35mMultiple Airlines

Deal found 8/13

$416

Sat 9/276:30 amLIS - SEA

3 stops38h 05mMultiple Airlines

Deal found 8/14

$434

Sun 9/147:45 amLIS - SEA

2 stops31h 30mMultiple Airlines

Deal found 8/15

$451

Fri 9/195:55 amLIS - SEA

2 stops47h 56mMultiple Airlines

Deal found 8/13

$467

Mon 9/1510:45 pmLIS - SEA

3 stops43h 35mMultiple Airlines

Deal found 8/13

$480

Fri 9/55:55 amLIS - SEA

2 stops36h 39mMultiple Airlines

Deal found 8/13

$488

Thu 9/1112:15 pmLIS - SEA

1 stop16h 20mMultiple Airlines

Deal found 8/13

$490

Fly from

Fly to

Route

Depart

Return

Price

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Sun 9/7

10:15 pm-5:50 pm

1 stop27h 35m

Seattle/Tacoma Intl

Mon 9/22

7:35 pm-9:35 pm

1 stop18h 00m

$697

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 10/6

9:25 pm-7:14 pm

2 stops29h 49m

Seattle/Tacoma Intl

Sat 11/1

10:05 am-11:40 am

1 stop18h 35m

$741

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 10/6

9:25 pm-7:14 pm

2 stops29h 49m

Seattle/Tacoma Intl

Tue 10/28

11:07 am-9:55 am

1 stop15h 48m

$741

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 10/6

9:25 pm-7:14 pm

2 stops29h 49m

Seattle/Tacoma Intl

Sun 10/26

11:07 am-9:55 am

1 stop15h 48m

$742

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Mon 10/6

9:25 pm-7:14 pm

2 stops29h 49m

Seattle/Tacoma Intl

Mon 10/27

11:07 am-9:55 am

1 stop15h 48m

$742

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Fri 10/17

5:55 am-10:12 pm

2 stops24h 17m

Seattle/Tacoma Intl

Wed 10/22

10:00 am-11:20 pm

2 stops29h 20m

$755

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 10/7

9:20 pm-10:12 pm

2 stops56h 52m

Seattle/Tacoma Intl

Tue 10/28

11:07 am-9:55 am

1 stop15h 48m

$755

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Tue 10/7

9:20 pm-10:12 pm

2 stops56h 52m

Seattle/Tacoma Intl

Mon 10/27

11:07 am-9:55 am

1 stop15h 48m

$767

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 10/9

6:40 am-10:12 pm

2 stops23h 32m

Seattle/Tacoma Intl

Sat 11/1

10:05 am-11:40 am

1 stop18h 35m

$786

LisbonSeattle

LIS - SEA

LISSEA

Lisbon Humberto Delgado

Thu 10/9

6:40 am-10:12 pm

2 stops23h 32m

Seattle/Tacoma Intl

Sun 10/26

11:07 am-9:55 am

1 stop15h 48m

$786

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 18 results

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 49 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 June is currently the most expensive (average of $389). 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.

How much does it cost to fly round-trip from Lisbon to Seattle?

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from Lisbon to Seattle, such as Delta, Air France, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,985 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Delta

8.0

Very good

7,985 reviews

Delta

8.0

Very good

7,985 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Air France

7.4

Good

1,468 reviews

Delta

8.0

Very good

7,985 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

United Airlines

7.4

Good

8,916 reviews

Delta

8.0

Very good

7,985 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

British Airways

6.7

Okay

7,267 reviews

Delta

8.0

Very good

7,985 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

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 $720. Additional round-trip tickets that might be worth considering are offered by United Airlines and Air France, with the lowest prices starting at $738 and $762, respectively. British Airways is priced at 22% lower than the current average price of a flight leaving 3 months from now.
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 June is currently the most expensive (average of $389). 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

Ocean Shores

Lakewood

Lynnwood

Lacey

Leavenworth

Renton

Olympia

Puyallup

Kent

Cle Elum

Chehalis

Kirkland

Issaquah

Aberdeen

Shoreline

Federal Way

Shelton

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Lisbon to Seattle

Porto to Seattle flights

Lisbon to Portland flights

Complete your trip

Seattle car rentals

Seattle/Tacoma Intl Airport car rentals

Kenmore Air Harbor Airport car rentals

Spokane car rentals

Yakima car rentals

Pasco car rentals

Bellingham car rentals

Walla Walla car rentals

Wenatchee car rentals

Downtown car rentals

Capitol Hill car rentals

West Seattle car rentals

Other flights to Seattle

Top 4 airlines flying from Lisbon to Seattle

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest$720	Average$1,074	FlexibilityNo cancel fee	On-time70%
United Airlines	Cheapest$738	Average$863	FlexibilityNo cancel fee	On-time69%
Air France	Cheapest$762	Average$1,151	FlexibilityNo cancel fee	On-time77%
Delta	Cheapest$775	Average$988	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.

$416+ 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 11/15. 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 April or May, booked 49 days in advance, depart on a Wednesday or Thursday and return on a Monday

Cheap flight deals from Lisbon to Seattle

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 August 15, 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 August 15, 2025.

Cheapflights Fare Finder

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

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 August 8, 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 August 15, 2025.

How much does it cost to fly round-trip from Lisbon to Seattle?

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from Lisbon to Seattle, such as Delta, Air France, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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 Seattle?

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 4 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 August 15, 2025.