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Cheap flights from Seattle to Lisbon from £501

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 23/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LIS
5 Mar — 12 Mar1
1 adult

Cheap flight deals from Seattle to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Lisbon (LIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 28 February 2025.

Round-trip from

£561

One-way from

£501

Popular in

June

Cheapest in

January

Average price

£613
Delta
  • Delta
  • 27/3-3/4
  • 4 total stops
  • 40h 04m total
  • Seattle to Lisbon
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Icelandair
  • Icelandair
  • 23/7
  • 1 total stop
  • 13h 50m total
  • Seattle to Lisbon
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£128 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£21 potential savings vs. average return price).
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Average for round-trip flights in February 2025
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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 28 February 2025.

Fri 24/1006:00SEA - LIS
2 stops18h 00mDelta
Mon 3/1112:20LIS - SEA
1 stop31h 00mDelta
Deal found 26/2£558
Tue 22/415:45SEA - LIS
2 stops21h 45mMultiple Airlines
Tue 29/422:15LIS - SEA
2 stops30h 13mMultiple Airlines
Deal found 27/2£563
Thu 6/314:10SEA - LIS
1 stop36h 25mKLM
Mon 10/315:25LIS - SEA
1 stop28h 15mKLM
Deal found 27/2£584
Fri 28/207:10SEA - LIS
1 stop16h 50mVirgin Atlantic
Fri 7/310:00LIS - SEA
2 stops20h 25mVirgin Atlantic
Deal found 27/2£588
Tue 22/419:10SEA - LIS
1 stop30h 45mTurkish Airlines
Tue 29/416:30LIS - SEA
1 stop32h 45mTurkish Airlines
Deal found 27/2£603
Tue 25/307:15SEA - LIS
2 stops27h 15mAir France
Sun 6/412:10LIS - SEA
2 stops41h 17mAir France
Deal found 27/2£614
Tue 25/307:00SEA - LIS
2 stops18h 10mUnited Airlines
Wed 2/411:25LIS - SEA
3 stops43h 25mUnited Airlines
Deal found 27/2£622
Thu 27/311:55SEA - LIS
2 stops19h 50mBritish Airways
Sun 6/417:10LIS - SEA
1 stop26h 25mBritish Airways
Deal found 26/2£624
Tue 22/406:00SEA - LIS
1 stop21h 10mAir Canada
Tue 29/412:50LIS - SEA
2 stops33h 33mAir Canada
Deal found 27/2£633
Tue 1/414:15SEA - LIS
1 stop23h 50mLufthansa
Fri 11/405:05LIS - SEA
1 stop15h 20mLufthansa
Deal found 27/2£644
Tue 22/415:24SEA - LIS
2 stops23h 56mSWISS
Tue 29/405:55LIS - SEA
2 stops23h 20mSWISS
Deal found 27/2£648
Mon 14/415:45SEA - LIS
2 stops16h 45mIcelandair
Wed 30/407:15LIS - SEA
2 stops18h 35mIcelandair
Deal found 28/2£833

Find flights from Seattle to Lisbon within your budget

Customise your flight search to find flights from Seattle to Lisbon 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, Cheapflights users made 858,174 searches. Data last updated 28 February 2025.

Fly from

Seattle

Fly to

Lisbon

Route

Depart

Return

Price

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 27/3

10:15-11:20

2 stops18h 05m

Lisbon Humberto Delgado

Thu 3/4

05:00-18:59

2 stops21h 59m

£561

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 22/4

15:45-21:30

2 stops21h 45m

Lisbon Humberto Delgado

Tue 29/4

22:15-20:28

2 stops30h 13m

£563

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 22/4

19:10-09:55

1 stop30h 45m

Lisbon Humberto Delgado

Tue 29/4

16:30-17:15

1 stop32h 45m

£588

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 18/3

13:59-15:10

2 stops18h 11m

Lisbon Humberto Delgado

Fri 28/3

05:30-22:25

2 stops23h 55m

£606

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 25/3

07:00-08:10

2 stops18h 10m

Lisbon Humberto Delgado

Wed 2/4

11:25-22:50

3 stops43h 25m

£622

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Thu 27/3

11:55-14:45

2 stops19h 50m

Lisbon Humberto Delgado

Sun 6/4

17:10-11:35

1 stop26h 25m

£624

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 22/4

06:00-11:10

1 stop21h 10m

Lisbon Humberto Delgado

Tue 29/4

12:50-14:23

2 stops33h 33m

£633

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 1/4

14:15-22:05

1 stop23h 50m

Lisbon Humberto Delgado

Fri 11/4

05:05-12:25

1 stop15h 20m

£644

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Tue 22/4

15:24-23:20

2 stops23h 56m

Lisbon Humberto Delgado

Tue 29/4

05:55-21:15

2 stops23h 20m

£648

SeattleLisbon

SEA - LIS

SEALIS

Seattle/Tacoma Intl

Sun 13/4

18:10-18:40

1 stop16h 30m

Lisbon Humberto Delgado

Sun 20/4

15:35-11:45

1 stop28h 10m

£698

Flights are sorted by cheapest return flights first.

Deals found on 26/2

Showing 1-10 of 16 results
1
2

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.

Travel insights for flights from Seattle to Lisbon

Get recent, data-driven insights about flights from Seattle to Lisbon including ideal travel times, pricing trends, and more.

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 February 2025.

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.

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

Find hourly flight availability from Seattle to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 February 2025.

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.

Rainfall in Lisbon by month

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

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

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 28 February 2025.
Read reviews from past customers who have flown Delta, KLM and SWISS from Seattle to Lisbon. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
8,126 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

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
8,126 reviews
Delta
8.0
Very Good
8,126 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

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
1,326 reviews
Delta
8.0
Very Good
8,126 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

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
1,565 reviews
Delta
8.0
Very Good
8,126 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

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.

Virgin Atlantic
7.4
Good
648 reviews
Delta
8.0
Very Good
8,126 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

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.

Air France
7.4
Good
1,441 reviews
Delta
8.0
Very Good
8,126 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

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

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?

    Delta, at £561, was found to be the cheapest airline from Seattle to Lisbon.Alternate airlines flying return to your destination include Turkish Airlines and Air France. Delta is priced at 29% 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 £501 on Icelandair. Other airlines that offer cheap prices include United Airlines from £565 and Lufthansa from £588 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
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Setúbal
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Sintra
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Estoril
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Peniche
Figueira da Foz

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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.

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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.

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