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Cheap flights from Seattle to Lisbon from £296

SEA — LIS
15 Oct — 22 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Lisbon

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Lisbon

Mon 21/907:15 -
2 stops20h 00m
Wed 21/1005:00 -
1 stop14h 52m
Deal found 13/9£541
Fri 20/1115:45 -
1 stop33h 15m
Thu 3/1210:40 -
1 stop20h 13m
Deal found 11/9£542
Mon 12/1023:13 -
2 stops27h 52m
Mon 19/1005:05 -
1 stop15h 15m
Deal found 12/9£544
Wed 25/1105:05 -
2 stops19h 50m
Tue 1/1212:20 -
2 stops19h 24m
Deal found 14/9£545
Mon 21/913:50 -
1 stop20h 55m
Wed 21/1019:45 -
1 stop24h 07m
Deal found 13/9£546
Thu 26/1106:00 -
2 stops18h 55m
Tue 1/1211:15 -
2 stops20h 39m
Deal found 14/9£547
Tue 13/1018:40 -
1 stop15h 10m
Sat 31/1005:30 -
1 stop16h 20m
Deal found 12/9£547
Sun 11/1011:08 -
2 stops19h 47m
Thu 22/1005:35 -
2 stops21h 30m
Deal found 11/9£548
Sun 4/1007:15 -
2 stops20h 00m
Tue 20/1005:00 -
2 stops19h 45m
Deal found 10/9£549
Tue 13/1019:25 -
2 stops31h 05m
Wed 28/1011:55 -
3 stops38h 22m
Deal found 10/9£550
Wed 14/1007:32 -
2 stops23h 23m
Fri 30/1010:55 -
2 stops20h 04m
Deal found 12/9£553
Tue 22/907:15 -
2 stops19h 40m
Tue 6/1005:00 -
2 stops19h 45m
Deal found 11/9£557

Find flight deals from Seattle to Lisbon

Round-trip from

£541

One-way from

£296

Popular in

June

Cheapest in

January

Average price

£726
Delta
  • Delta
  • 3/10-12/10
  • 3 total stops
  • 58h 07m total
  • Seattle to Lisbon
Search Deals
Virgin Atlantic
  • Virgin Atlantic
  • 20/2-31/12
  • 1 total stop
  • 26h 05m total
  • Seattle to Lisbon
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£178 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

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

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Depart

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Price

Cheapest return flight

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 20/2

21:55-08:00

1 stop26h 05m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£296

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Wed 23/9

19:00-12:10

2 stops57h 10m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£328

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Mon 26/10

06:30-08:10

1 stop18h 40m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£343

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 17/10

12:43-09:20

3 stops36h 37m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£346

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 17/10

22:59-08:00

1 stop25h 01m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£351

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Thu 15/10

13:30-14:55

1 stop17h 25m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£380

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sun 4/10

11:50-14:55

2 stops19h 05m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£403
Fastest return journey

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Wed 23/9

13:50-14:35

1 stop16h 45m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£403

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Sat 26/9

23:08-10:45

1 stop27h 37m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£412

SeattleLisbon

SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado

SEALIS

Seattle/Tacoma Intl

Tue 13/10

19:25-10:30

2 stops31h 05m

Lisbon Humberto Delgado

Wed 28/10

11:55-19:17

3 stops38h 22m

£550

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 19 resultsSorted by cheapest first
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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

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 80 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 £340). Flying from Seattle to Lisbon in June is currently the most expensive (average of £917). 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.

How much does it cost for a return flight from Seattle to Lisbon?

Airfare is below average for this route at the moment.

Seattle to Lisbon flights typically cost between £577 and £833 in October.
The cheapest return price found within the last 5 days was £541 on Delta (3 Oct–12 Oct).

Related info for your journey

  • How long is the flight from Seattle to Lisbon?

    For as low as £625, United Airlines can have you in Lisbon from Seattle in 15h 10m. The distance from Seattle to Lisbon is about 5199 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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 £340). Flying from Seattle to Lisbon in June is currently the most expensive (average of £917). 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 Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Fátima
Nazaré
Evora
Madeira
Setúbal
Oeiras
Almada
Óbidos
Tomar
Estoril
Figueira da Foz
Sintra
Costa da Caparica

Browse thousands of different options on Cheapflights for your next trip

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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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