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

Scandinavian Airlines, at £535, was found to be the cheapest airline from Seattle to Lisbon.Alternate airlines flying return to your destination include Delta and Turkish Airlines. Scandinavian Airlines is priced at 26% lower than the current average price of a flight leaving 3 months from now.

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

One-way options have recently been found by users for as low as £442 on United Airlines. Other airlines that offer cheap prices include Air Europa from £585 and Turkish Airlines from £590 one-way.

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

Travelers have found it’s best to book a flight 58 days in advance to save up to 28% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 58 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Seattle to Lisbon 1-2 weeks in advance for as low as £559, or £832 for flights within the next 24 hours.

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

Flights from Seattle to Lisbon lean towards being more expensive in June. Prices are generally better when you fly from Seattle to Lisbon in January, with the cheapest ticket starting at £447.

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

When flying from Seattle to Lisbon, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

How can I find direct flights from Seattle to Lisbon?

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

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

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

£442+ Flights from Seattle to Lisbon

Cheap flight deals from Seattle to Lisbon

Round-trip from	£535
One-way from	£442
Popular in	June
Cheapest in	January
Average price	£678

Scandinavian Airlines
3/10-15/10
4 total stops
81h 49m total
Seattle to Lisbon

Search Deals

United Airlines
1/10
1 total stop
18h 00m total
Seattle to Lisbon

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£108 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£18 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Find flight deals from Seattle to Lisbon

Cheapest flights from Seattle to Lisbon
Explore the most affordable flight options available from Seattle to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.

Fri 3/1015:20SEA - LIS

2 stops57h 40mScandinavian Airlines

Wed 15/1007:15LIS - SEA

2 stops24h 09mScandinavian Airlines

Deal found 28/4£535

Sun 5/1016:20SEA - LIS

1 stop20h 20mMultiple Airlines

Fri 24/1006:45LIS - SEA

2 stops23h 28mMultiple Airlines

Deal found 29/4£547

Mon 11/807:20SEA - LIS

1 stop19h 25mDelta

Wed 20/805:00LIS - SEA

1 stop14h 35mDelta

Deal found 29/4£603

Thu 2/1019:10SEA - LIS

1 stop30h 45mTurkish Airlines

Wed 15/1005:55LIS - SEA

1 stop19h 20mTurkish Airlines

Deal found 28/4£605

Wed 1/1013:29SEA - LIS

2 stops18h 11mBritish Airways

Mon 13/1018:45LIS - SEA

1 stop24h 25mBritish Airways

Deal found 29/4£623

Thu 20/1112:50SEA - LIS

1 stop13h 25mUnited Airlines

Sat 29/1105:00LIS - SEA

1 stop15h 10mUnited Airlines

Deal found 29/4£634

Sat 9/815:45SEA - LIS

1 stop21h 35mIcelandair

Sat 30/807:00LIS - SEA

2 stops21h 40mIcelandair

Deal found 28/4£648

Mon 6/1013:45SEA - LIS

2 stops25h 35mSWISS

Mon 27/1012:15LIS - SEA

2 stops42h 11mSWISS

Deal found 29/4£670

Sun 14/1215:10SEA - LIS

2 stops34h 10mLufthansa

Mon 5/115:55LIS - SEA

2 stops29h 25mLufthansa

Deal found 28/4£686

Mon 14/709:50SEA - LIS

2 stops16h 55mVirgin Atlantic

Thu 31/710:00LIS - SEA

1 stop18h 09mVirgin Atlantic

Deal found 29/4£703

Sun 18/518:07SEA - LIS

1 stop20h 43mKLM

Mon 26/519:30LIS - SEA

1 stop24h 10mKLM

Deal found 29/4£711

Tue 7/1013:30SEA - LIS

1 stop25h 30mFinnair

Sat 18/1006:35LIS - SEA

2 stops21h 47mFinnair

Deal found 28/4£821

Best flights from Seattle to Lisbon
Discover carefully curated flight deals from Seattle to Lisbon that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 April 2025.

Fri 3/1015:20SEA - LIS

2 stops57h 40mScandinavian Airlines

Wed 15/1007:15LIS - SEA

2 stops24h 09mScandinavian Airlines

Deal found 28/4£535

Sun 5/1016:20SEA - LIS

1 stop20h 20mMultiple Airlines

Fri 24/1006:45LIS - SEA

2 stops23h 28mMultiple Airlines

Deal found 29/4£547

Mon 11/807:20SEA - LIS

1 stop19h 25mDelta

Wed 20/805:00LIS - SEA

1 stop14h 35mDelta

Deal found 29/4£603

Thu 2/1019:10SEA - LIS

1 stop30h 45mTurkish Airlines

Wed 15/1005:55LIS - SEA

1 stop19h 20mTurkish Airlines

Deal found 28/4£605

Wed 1/1013:29SEA - LIS

2 stops18h 11mBritish Airways

Mon 13/1018:45LIS - SEA

1 stop24h 25mBritish Airways

Deal found 29/4£623

Sat 9/815:45SEA - LIS

1 stop21h 35mIcelandair

Sat 30/807:00LIS - SEA

2 stops21h 40mIcelandair

Deal found 28/4£648

Mon 6/1013:45SEA - LIS

2 stops25h 35mSWISS

Mon 27/1012:15LIS - SEA

2 stops42h 11mSWISS

Deal found 29/4£670

Sun 10/807:20SEA - LIS

1 stop18h 00mUnited Airlines

Sat 30/809:50LIS - SEA

2 stops33h 41mUnited Airlines

Deal found 28/4£679

Sun 3/810:00SEA - LIS

2 stops15h 20mLufthansa

Sun 24/806:15LIS - SEA

1 stop18h 44mLufthansa

Deal found 28/4£692

Mon 14/709:50SEA - LIS

2 stops16h 55mVirgin Atlantic

Thu 31/710:00LIS - SEA

1 stop18h 09mVirgin Atlantic

Deal found 29/4£703

Sun 18/518:07SEA - LIS

1 stop20h 43mKLM

Mon 26/519:30LIS - SEA

1 stop24h 10mKLM

Deal found 29/4£711

Tue 7/1013:30SEA - LIS

1 stop25h 30mFinnair

Sat 18/1006:35LIS - SEA

2 stops21h 47mFinnair

Deal found 28/4£821

Last-minute flights from Seattle to Lisbon
Discover last-minute flight deals from Seattle to Lisbon. Data last updated 29 April 2025 and is based on user searches.

Wed 30/419:00SEA - LIS

2 stops19h 10mIcelandair

Tue 6/507:05LIS - SEA

2 stops21h 35mIcelandair

Deal found 29/4£1,110

Fri 2/514:00SEA - LIS

2 stops22h 40mMultiple Airlines

Thu 8/507:00LIS - SEA

2 stops23h 43mMultiple Airlines

Deal found 29/4£714

Fri 2/514:00SEA - LIS

2 stops22h 40mScandinavian Airlines

Mon 26/507:15LIS - SEA

1 stop14h 35mScandinavian Airlines

Deal found 29/4£961

Wed 7/515:45SEA - LIS

2 stops22h 00mIcelandair

Sat 17/507:10LIS - SEA

2 stops18h 40mIcelandair

Deal found 29/4£1,128

Sun 18/518:07SEA - LIS

1 stop20h 43mKLM

Mon 26/519:30LIS - SEA

1 stop24h 10mKLM

Deal found 29/4£711

Tue 20/518:35SEA - LIS

1 stop15h 15mDelta

Fri 30/505:00LIS - SEA

1 stop18h 57mDelta

Deal found 28/4£707

Tue 20/512:45SEA - LIS

2 stops26h 35mSWISS

Fri 30/505:55LIS - SEA

2 stops23h 16mSWISS

Deal found 28/4£785

Wed 21/511:30SEA - LIS

1 stop15h 35mUnited Airlines

Tue 27/511:25LIS - SEA

1 stop16h 12mUnited Airlines

Deal found 29/4£765

Mon 26/519:10SEA - LIS

2 stops34h 15mTurkish Airlines

Tue 10/614:40LIS - SEA

2 stops34h 35mTurkish Airlines

Deal found 29/4£695

Tue 27/505:30SEA - LIS

2 stops21h 15mVirgin Atlantic

Tue 3/610:00LIS - SEA

2 stops20h 23mVirgin Atlantic

Deal found 29/4£796

Fri 30/520:20SEA - LIS

1 stop18h 50mBritish Airways

Tue 10/611:05LIS - SEA

1 stop19h 21mBritish Airways

Deal found 29/4£846

One-way flights from Seattle to Lisbon
Search for one-way flight options from Seattle to Lisbon. Find affordable one-way fares based on user searches. Data last updated 29 April 2025.

Wed 1/1007:20SEA - LIS

1 stop18h 00mUnited Airlines

Deal found 29/4£442

Tue 10/607:20SEA - LIS

2 stops23h 55mAir Europa

Deal found 29/4£585

Mon 8/919:10SEA - LIS

1 stop30h 45mTurkish Airlines

Deal found 29/4£590

Wed 14/500:24SEA - LIS

1 stop21h 26mMultiple Airlines

Deal found 29/4£989

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Fri 3/10

15:20-09:00

2 stops57h 40m

Lisbon Humberto Delgado

Wed 15/10

07:15-23:24

2 stops24h 09m

£535

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 5/10

16:20-20:40

1 stop20h 20m

Lisbon Humberto Delgado

Fri 24/10

06:45-22:13

2 stops23h 28m

£547

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 11/8

07:20-10:45

1 stop19h 25m

Lisbon Humberto Delgado

Wed 20/8

05:00-11:35

1 stop14h 35m

£603

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 2/10

19:10-09:55

1 stop30h 45m

Lisbon Humberto Delgado

Wed 15/10

05:55-17:15

1 stop19h 20m

£605

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Wed 1/10

13:29-15:40

2 stops18h 11m

Lisbon Humberto Delgado

Mon 13/10

18:45-11:10

1 stop24h 25m

£623

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sat 9/8

15:45-21:20

1 stop21h 35m

Lisbon Humberto Delgado

Sat 30/8

07:00-20:40

2 stops21h 40m

£648

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 6/10

13:45-23:20

2 stops25h 35m

Lisbon Humberto Delgado

Mon 27/10

12:15-23:26

2 stops42h 11m

£670

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 10/8

07:20-09:20

1 stop18h 00m

Lisbon Humberto Delgado

Sat 30/8

09:50-11:31

2 stops33h 41m

£679

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 3/8

10:00-09:20

2 stops15h 20m

Lisbon Humberto Delgado

Sun 24/8

06:15-16:59

1 stop18h 44m

£692

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Mon 14/7

09:50-10:45

2 stops16h 55m

Lisbon Humberto Delgado

Thu 31/7

10:00-22:21

2 stops20h 21m

£703

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 16 results

Best time to book a flight from Seattle to Lisbon

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

Estimated return 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 Seattle to Lisbon

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

The price you pay for your flight from Seattle to Lisbon may vary depending on when you book. For the best chance of a lower fare, look to book 67 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 Seattle to Lisbon?

Currently, January is the cheapest month in which you can book a flight from Seattle to Lisbon (average of £101). Flying from Seattle to Lisbon in August is currently the most expensive (average of £274). 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.

Rainfall in Lisbon by month

In terms of precipitation, rainfall in Lisbon ranges from 6.0 - 122.0 inches per month. December is typically the wettest month, when rainfall can reach 122.0 mm. July is typically the driest time to visit Lisbon when rainfall is around 6.0 mm.

Temperature in Lisbon by month

If weather is an important factor for your trip to Lisbon, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Lisbon

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,929 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,275 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS

7.5

Good

1,588 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very Good

7,929 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from Seattle to Lisbon round-trip?
Scandinavian Airlines, at £535, was found to be the cheapest airline from Seattle to Lisbon.Alternate airlines flying return to your destination include Delta and Turkish Airlines. Scandinavian Airlines is priced at 26% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Seattle to Lisbon one-way?
One-way options have recently been found by users for as low as £442 on United Airlines. Other airlines that offer cheap prices include Air Europa from £585 and Turkish Airlines from £590 one-way.
Can I find deals for flights from Seattle to Lisbon that include hotel bookings?
Yes. In addition to deals on Seattle to Lisbon flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Seattle to Lisbon?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Lisbon.
Can I find deals for business class flights from Seattle to Lisbon?
Yes. Cheapflights offers flight deals from Seattle to Lisbon 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 Seattle to Lisbon?
Currently, January is the cheapest month in which you can book a flight from Seattle to Lisbon (average of £101). Flying from Seattle to Lisbon in August is currently the most expensive (average of £274). 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

Madeira

Setúbal

Costa da Caparica

Fátima

Almada

Sintra

Oeiras

Estoril

Nazaré

Beja

Sesimbra

Peniche

Figueira da Foz

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Complete your trip

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Lisbon Humberto Delgado Airport car hire

Ponta Delgada car hire

Angra do Heroísmo car hire

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How does Cheapflights help users find flights from Seattle to Lisbon?

Cheapflights helps you search for flights from Seattle to Lisbon via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Lisbon?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to Lisbon.

Can Cheapflights find flights from Seattle to Lisbon with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Seattle to Lisbon, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Seattle to Lisbon become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from Seattle to Lisbon from £442

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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Seattle to Lisbon

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Lisbon

Cheapest flights from Seattle to LisbonExplore the most affordable flight options available from Seattle to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.

Explore the most affordable flight options available from Seattle to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Seattle to Lisbon

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

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a return flight from Seattle to Lisbon. Price data was last updated on 25 April 2025.

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

Rainfall in Lisbon by month

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

Temperature in Lisbon by month

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

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Lisbon. Reviews last updated 29 April 2025.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Lisbon. 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 Seattle to Lisbon round-trip?

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

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

How can I find direct flights from Seattle to Lisbon?

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

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

Travelling 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.

Complete your trip

Complete your trip to Lisbon by adding a car hire and/or hotel booking to your travel itinerary.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Lisbon?

Why should you use Cheapflights to find cheap flight tickets from Seattle to Lisbon?

Can Cheapflights find flights from Seattle to Lisbon with no change fees?

Can Cheapflights notify me if prices for flights from Seattle to Lisbon become cheaper?

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Travel Smart

Cheapest flights from Seattle to Lisbon
Explore the most affordable flight options available from Seattle to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 April 2025.