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SEA - LIS

$281 Find cheap flights from Seattle to Lisbon

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Lisbon departing on 10/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 6/21
Fri 6/28

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Lisbon.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Lisbon.
In the last 7 days travelers have searched 42,596,105 times on KAYAK, and here is why:

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Cheap flight deals from Seattle to Lisbon (SEA-LIS)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Lisbon that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
11:45 am - 8:35 pmSEA-LIS
24h 50m2 stops
7:20 am - 10:00 pmLIS-SEA
22h 40m2 stops
Mon, Sep 16 - Mon, Sep 30
11:45 am - 3:35 pmSEA-LIS
19h 50m2 stops
6:55 am - 9:30 pmLIS-SEA
22h 35m2 stops
Thu, Nov 7 - Fri, Nov 15
9:55 am - 9:20 amSEA-LIS
39h 25m2 stops
11:00 am - 9:14 pmLIS-SEA
18h 14m1 stop
$657Air Canada
Find Deal
Sun, Nov 3 - Thu, Nov 14
6:45 pm - 9:50 pmSEA-LIS
19h 05m1 stop
11:15 am - 9:43 pmLIS-SEA
18h 28m1 stop
$660British Airways
Find Deal
Mon, Nov 4 - Wed, Nov 13
5:50 am - 9:20 amSEA-LIS
19h 30m2 stops
11:00 am - 9:16 amLIS-SEA
30h 16m2 stops
$663Air Canada
Find Deal
Mon, Nov 4 - Wed, Nov 13
11:52 am - 2:55 pmSEA-LIS
19h 03m2 stops
6:35 pm - 11:25 amLIS-SEA
24h 50m1 stop
$678British Airways
Find Deal
Mon, Nov 4 - Mon, Nov 25
8:00 am - 10:30 amSEA-LIS
18h 30m1 stop
11:00 am - 6:59 pmLIS-SEA
39h 59m2 stops
$694United Airlines
Find Deal
Wed, Nov 6 - Sat, Nov 16
5:35 am - 10:30 amSEA-LIS
20h 55m2 stops
11:00 am - 6:59 pmLIS-SEA
39h 59m2 stops
$698United Airlines
Find Deal
Wed, Nov 6 - Sat, Nov 16
7:20 am - 10:45 amSEA-LIS
19h 25m1 stop
9:40 am - 5:40 pmLIS-SEA
16h 00m1 stop
$1,017Delta
Find Deal
Tue, Aug 20 - Thu, Aug 29
11:15 pm - 8:00 amSEA-LIS
24h 45m2 stops
10:00 am - 8:27 amLIS-SEA
30h 27m2 stops
$1,023Delta
Find Deal
Sat, Aug 24 - Tue, Sep 3

Flights from Seattle to Lisbon - Travel Insights & Trends

Get data-powered insights and trends into flights from Seattle to Lisbon to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to Lisbon?

The average price of all flights from Seattle to Lisbon clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Lisbon on a Monday and more expensive on a Thursday. On your return trip to Seattle, you should consider flying back on a Friday, and avoid Sundays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Lisbon, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to Lisbon is February, where tickets cost $723 on average. On the other hand, the most expensive months are June and May, where the average cost of tickets is $1,513 and $1,379 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Lisbon, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to Lisbon, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 37 days before departure.

Which airlines provide the cheapest flights from Seattle to Lisbon?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on Aer Lingus ($589) and ITA Airways ($625). The cheapest round-trip tickets were found on Air Canada ($657) and American Airlines ($659).

Good to know

Low season

January

High season

September

Cheapest flight

$281
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Seattle to Lisbon

When to book flights from Seattle to Lisbon

Are your dates flexible? Find out the best times to travel from Seattle to Lisbon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Lisbon

  • How early should I get to SEA on the date I’m supposed to travel?

    On the date you’re supposed to fly to Lisbon from Seattle, it’s in your best interest to reach SEA at least 2h ahead of your flight. Getting to this airport this early will give you adequate time to go through the airport’s time-consuming checkpoints and check out the interesting sites available in its terminals.

  • Does SEA have a spa?

    If you’d like to visit a spa while waiting for your flight at SEA, you’re in luck, as this airport is home to the fabulous Terminal Gateway Spa. Situated a short distance from Gate A5, this spa features exceptional professionals. Given that it offers its services at affordable rates, you won’t incur an exaggerated bill at this spa.

  • Can I leave my luggage at LIS?

    LIS has a luggage storage facility. Located next to car park P2, this facility offers secure storage services at affordable rates. It’s worth noting that as it is usually open 24/7, you can pick up your luggage at this facility whenever you feel like it.

  • Where can I shower at LIS?

    At LIS, you can shower at either ANA Lounge, located on the 6th floor of Terminal 1, or the Airport Business Center, near check-in desks 14 to 36 in Terminal 1. Please note that to gain entry to either, you’ll have to pay an entry fee.

  • What is the cheapest flight from Seattle to Lisbon?

    In the last 3 days, the lowest price for a flight from Seattle to Lisbon was $281 for a one-way ticket and $619 for a round-trip.

  • Do I need a passport to fly between Seattle and Lisbon?

    Yes, you’ll need a passport to travel to Lisbon from Seattle.

  • Which aircraft models fly most regularly from Seattle to Lisbon?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Lisbon?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Seattle and Lisbon, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to Lisbon from Seattle?

    London is the most popular layover city among KAYAK users traveling from Seattle to Lisbon.

  • Which is the best airline for flights from Seattle to Lisbon, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Seattle to Lisbon are Delta and KLM. With an average price for the route of $1,059 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $961 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Seattle to Lisbon?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Lisbon.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Lisbon?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Lisbon from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Lisbon?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Lisbon with an airline and back to Seattle with another airline. Booking your flights between Seattle and LIS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Lisbon?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Lisbon from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Seattle to Lisbon

  • If you are traveling to Lisbon with your kids, you should consider checking out Seattle-Tacoma International Airport’s (SEA) children’s play area. Located between the Central Terminal and Gates A, this children’s play area features a variety of toys and soft play areas for toddlers. Given that it is normally open round-the-clock, you can count on finding it open regardless of the time.
  • SEA features several nursing rooms. These nursing rooms are near Gates A9, C10, D10, D23, and N2. As they all feature changing tables, you can comfortably change your baby’s diapers in any of these rooms.
  • To pay for services and purchase goods easily once you land at Humberto Delgado Airport (LIS), you should convert some of your cash to the local currency. At SEA, you’ll be able to do so, as this airport features currency exchange sites. They are located in the ticketing level and baggage claim area in the Main Terminal and near Gates A and S.
  • LIS features information desks in its Arrivals Hall and Departures Hall. At any of these information desks, open from 7 am to 12 am, you can rest assured of getting the help you need once you land at this airport, as they are both manned by informed airport staff.
  • If you have the necessary documents, you can easily rent a car at LIS, as this airport features counters for car rental agencies such as Hertz, SIXT, Europcar, Avis, Budget, and other local car rentals. As the counters for these car rentals are within the airport’s terminal complex, you won’t need any form of ground transportation to get to the counter of your preferred car rental.
See more tips

Top 5 airlines serving from Seattle to Lisbon

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Lisbon. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Lisbon? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10595 reviews
7.9Comfort
8.2Boarding
7.4Food
8.0Entertainment
8.6Crew
Airline reviews

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

10.0 ExcellentSash, May 2024SEA - HNL
Read more about Delta reviews

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

Old cabine without flat bed in business for a 12 hour flight is not acceptable

Generally good. The crew is excellent. The food could be better.

They wanted to close counter although they did not provide the wheelchair requested which ended by going alone to transit security and lost long time and they did not want to wait .

Did not find the wheelchair that supposed to assist and went to a long queue for transit security chk which was very slow and boarding desk wanted to close counter although that they knew that I am minutes away because of their mistake of not providing the wheelchair.

They charge me for luggage which is was included on the ticket

Business class in the second leg - CDG-EVN was a disaster.

worst experience ever i choose my seat in advance and also have my seat selected in my boarding and the they told me that my seat has been changed without notify me

No birding was given for next trip on same carrier, food was very moderate.

We transited through Chad and what was supposed to be a 1hr 20 minutes transit time lasted over 4hrs. We didn't get regular updates until we complained. After a 10hr flight from Paris no form of refreshment given and finally arrived Abuja over 6hrs later and none of my bags came

The line at boarding was not well organized and managed

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

This was a flight operated by Lufthansa. See me prior comments, which were meant for this experience. The CSA, Ashley, should be reprimanded if not fired for incompetence, being rude, and very, very slow. She was whispering to other CSAs, blaming my flight change on others, unable to give me a seat assignment, telling me could not help without offering any advice (I travel 200,000 miles a year and am a consultant to the airlines, so I know how this gets done PRETTY DAMN WELL). Then, she gave me literally the worst seat on the airline (yes, there were other seats open) - the one right next to the bathroom that was so bad the other PAX next to me left to move to another seat. My seat kept getting rammed (3x) by the crew with their carts (no turbulence to speak of), other passengers grabbing the seat to get in or out of the bathroom, and listening to the bathroom flush all night.

This was a Lufthansa flight, not United. The CSA at the counter, Ashley, was not only incompetent, but quite rude. Me and two other PAX waited over 7 minutes standing in front of her and another CSA and they ignored us. We joked that we must have accidently taken invisibility pills. She could have at least said "I'll be with you in a moment, I'm currently....". I could go on about how rude she and the other CSAs were (whispering, not communicating with me, blaming the situation on others, etc.). She would not work for me. Then, she gave me literally the worst seat on the plane. the worst. My seat kept getting bumped (rammed twice by the crew with their carts and about every 5 minutes by someone using the bathroom), listening to the bathroom all night, crowded seat, etc.

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

First flight of the day… MINIMUM FUEL! 15 minute landing delay at HOU due to fog turned into a 2+ hour delay! Rather than circle, they had to divert to another city to refuel! Sat on tarmac at Austin to refuel. We ALL missed our connections! The crew, including pilots, were clueless. Crew was really a mess. At HOU, Untied employees were exceedingly rude to all. It was pitiful.

Food wasn’t very good, old business seating configuration on an old A340

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

Standard flight experience, but there is only power at the seat to row 20 on the aircraft, on my initial check in it did not say that was the case

Not a fan of the diagonal partially enclosed business class seats or how they have to be converted to beds manually by crew. I prefer more isolation and user control for switching to lie flat.

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

Direct nonstop flight was great. Flight was delayed and the crew announced a 2h delay on the sound system. 30 min or so later I hear my name on the sound system for immediate board. Several other passangers were late too. Reason: The crew incorrectly announced a 2h delay when in reality they meant a new boarding time at 2pm.

Plenty of room in the exit row. Sat on the plane an hour before taking off.☹️ Landed late and had to wait for gate availability.

Flight was on time early arrival better entertainment good staff.everything was excellent

Delayed leaving. On arrival we were taken to the airstrip and had to get off onto an over crowed bus, not all that passengers fit. Drove around the airport for 20 + minutes. Taken off the bus told to go upstairs 3 flights then all the passengers had to walk a mile or more , those of us old there was no one to direct us to were to go. I asked several people with no answers. Once I got to baggage claim my bags were not on the right bag claim. Once again asked for help and finally someone found my bags on a different carasel. Very frustrating.

Excellent host on board. Not so friendly check-in staff. Older plane with no food or entertainment due to short flight. Friendly captain and crew.

I don’t think there was entertainment? No mention of it. It was a good flight. Only complaint was my seat cushion was not attached and kept slipping.

They canceled the flight on us very close to the flight date .

It took 66 hours to get from Seattle to Tel Aviv. As a minor, I was left for more than 12 hours in Toronto and Frankfurt without hotel and food vouchers. It took 5 layovers. It was insane and not okay

It was delayed but got us to YYZ. I had great copassengers.

Flew SEA-CA, then CA-NRT. First flight was short but very uncomfortable, dirty, and had very small overhead storage space. The seats and fans were not cleaned and had visible dirt on them. Second flight was perfect.

Wonderful service and very comfy in the bulkhead in Economy Plus! Delicious food.

The BA team at Sky Harbor is deplorable, full of unnecessary attitude and poor communication. It seems like every member of the team was looking at another to solve the problem, instead of taking agency to do so themselves. I saw no less than 6 altercations with the same gate agent where he threatened to revoke the passengers boarding pass for asking a wildly reasonable question, something as simple as where the cue to board was. I’ve complained to BA before but it seems this isn’t an issue for them, which is very disappointing

Boarding poor in London,ok in Chicago. Don’t like Heatrow/terminal5

It was very good. We got a late start by about an hour and a half. However I worked rather have that than crash. It was purely mechanical. They had our tickets ready when we came off the plane in London for the next leg. The only mishap was when we got to Lisbon my husbands luggage made or bit mine didn't. All was not lost because I did finally get it 2 days later. I was really pleased that they c made the effort.

Leg space was not enough. The meal was not satisfactory.

Liked that my American Airlines status seamlessly transferred to BA so luggage check was free. Flights were on time, boarding quick. Wish they didn’t assign connecting gate so late at Heathrow.

The entire process was flawless and as expected flying first class. The only thing that I have a complaint on...when first boarding, the plane was EXTREMELY cold; then when we were trying to sleep, it was way too hot - just better regulating (especially trying to sleep) would have made it perfect.

- OK plane. Basic accommodations. OK food. The digital window shade wasn't working.

- OK plane. Basic accommodations. OK food. The digital window shade wasn't working. - Expect to be woken up more than an hour before landing when they start dinging the bell and making announcements and turning on all cabin lights to serve a snack. I would prefer they remain quiet and only serve people who want to wake up.

Better food and more space in the seats. Also when doing the web check in both times I was going in to your site the minute you open it and there is not really many seats to choose only to buy!!!

Book cheap flights from Seattle to Lisbon

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Lisbon found on KAYAK in the last 72 hours.
10/11Fri
2 stops
20h 55mSEA-LIS
$281
9/23Mon
2 stops
20h 15mSEA-LIS
$373
10/8Tue
2 stops
16h 40mSEA-LIS
$382
8/22Thu
2 stops
30h 25mSEA-LIS
$390
6/10Mon
1 stopUnited Airlines
13h 45mSEA-LIS
$875
6/10Mon
2 stopsUnited Airlines
21h 25mSEA-LIS
$881
10/7Mon
2 stopsAir Canada
19h 30mSEA-LIS
$928
10/3Thu
2 stopsAir Canada
19h 30mSEA-LIS
$978
10/4Fri
2 stopsDelta
23h 30mSEA-LIS
$982
9/24Tue
1 stopAir France
15h 40mSEA-LIS
$1,925

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Last minute flights from Seattle to Lisbon

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to Lisbon that are departing in the next 10 days.
5/26Sun
multi-stopIberia
37h 20mSEA-LIS
6/6Thu
multi-stopIberia
31h 05mLIS-SEA
$1,328
5/24Fri
multi-stop
20h 25mSEA-LIS
5/28Tue
multi-stop
17h 25mLIS-SEA
$1,333
5/22Wed
multi-stop
28h 05mSEA-LIS
5/29Wed
multi-stop
15h 45mLIS-SEA
$1,373
5/22Wed
multi-stop
20h 45mSEA-LIS
5/29Wed
multi-stop
15h 45mLIS-SEA
$1,390
5/26Sun
multi-stop
22h 45mSEA-LIS
6/6Thu
multi-stop
17h 55mLIS-SEA
$1,393
5/24Fri
multi-stop
20h 25mSEA-LIS
5/28Tue
multi-stop
20h 19mLIS-SEA
$1,400
5/24Fri
multi-stopUnited Airlines
32h 00mSEA-LIS
6/2Sun
multi-stopUnited Airlines
35h 07mLIS-SEA
$1,688
5/23Thu
multi-stopSingapore Airlines
43h 53mSEA-LIS
5/27Mon
multi-stopSingapore Airlines
37h 40mLIS-SEA
$2,099
5/25Sat
multi-stopAmerican Airlines
23h 50mSEA-LIS
6/6Thu
multi-stopAmerican Airlines
17h 35mLIS-SEA
$2,549
5/25Sat
multi-stopAmerican Airlines
23h 50mSEA-LIS
6/6Thu
multi-stopAmerican Airlines
19h 24mLIS-SEA
$2,551

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Seattle - Lisbon Flights

Departure:

Seattle (undefined)United States

Destination:

Lisbon (LIS)Portugal

Return flight deals:

Lisbon - Seattle

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