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SEA - LIS

$324 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 9/30. 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
Sat 6/15
Sat 6/22

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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 42,211,976 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
6:45 pm - 9:35 pmSEA-LIS
18h 50m2 stops
6:00 am - 8:21 pmLIS-SEA
22h 21m2 stops
Tue, Sep 3 - Tue, Sep 10
11:50 pm - 8:10 amSEA-LIS
24h 20m2 stops
11:00 am - 6:13 pmLIS-SEA
39h 13m2 stops
$654United Airlines
Find Deal
Tue, Nov 5 - Wed, Nov 13
9:35 am - 9:20 amSEA-LIS
15h 45m1 stop
11:00 am - 9:14 pmLIS-SEA
18h 14m1 stop
$707Air Canada
Find Deal
Wed, Nov 6 - Sat, Nov 16
5:50 am - 9:20 amSEA-LIS
19h 30m2 stops
11:00 am - 9:14 pmLIS-SEA
42h 14m2 stops
$713Air Canada
Find Deal
Sun, Nov 10 - Sun, Nov 24
10:55 pm - 8:00 amSEA-LIS
26h 05m1 stop
10:00 am - 10:20 pmLIS-SEA
20h 20m1 stop
$724Delta
Find Deal
Sat, Nov 2 - Sun, Nov 17
7:40 pm - 5:55 pmSEA-LIS
14h 15m1 stop
11:15 am - 9:43 pmLIS-SEA
18h 28m1 stop
$837British Airways
Find Deal
Sun, Sep 1 - Wed, Nov 27
7:40 pm - 11:15 pmSEA-LIS
19h 35m1 stop
6:35 pm - 8:28 pmLIS-SEA
32h 53m2 stops
$853British Airways
Find Deal
Wed, Oct 23 - Thu, Oct 31
7:20 am - 10:45 amSEA-LIS
19h 25m1 stop
12:45 pm - 9:56 pmLIS-SEA
17h 11m1 stop
$1,016Delta
Find Deal
Tue, Oct 8 - Wed, Oct 23
1:35 pm - 5:55 pmSEA-LIS
20h 20m1 stop
9:40 am - 5:35 pmLIS-SEA
15h 55m1 stop
$1,031Air France
Find Deal
Wed, Jun 26 - Wed, Jul 3
6:20 pm - 5:55 pmSEA-LIS
15h 35m1 stop
5:40 am - 11:20 amLIS-SEA
13h 40m1 stop
$1,032Air France
Find Deal
Mon, Jun 24 - Fri, Jul 12

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 Sunday. 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 ($588) and ITA Airways ($646). The cheapest round-trip tickets were found on United Airlines ($654) and American Airlines ($658).

Good to know

Low season

January

High season

September

Cheapest flight

$324
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 $324 for a one-way ticket and $651 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, Star Alliance, and oneworld 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 $1,060 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 10673 reviews
8.0Entertainment
7.4Food
8.2Boarding
7.9Comfort
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

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.

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

Energetic crew - flight full of swiftied going to Taylor's opening show in Paris! Long lines for bathroom made out kind of suck though

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Flight was delayed 2.5 hours - a big deal on an overnight when you plan to sleep.

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

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.

My second flight ended up being through United and it was fine. Again, just frustrating that it was so late.

My experience was pretty frustrating because the first leg of my flight on United (though booked through Air Canada) was delayed causing me to miss my connecting flight on Air Canada. This could have been an easy solve as there was a direct flight later that morning via Air Canada that they easily could have put me on which would have only gotten me to my destination 2 1/2 hours later but because United and Air Canada don’t seem to have good communication they gave me the run around both telling me to talk with the other which I did three times to no avail. I ended up taking the delayed flight and getting on a new connecting flight which ended up getting me to my destination 6 hours later and I missed the event I was planning to go to this evening.

Everything went smoothly and as expected. We were on time and one flight arrived early.

First time flying Air Canada and the trip was very pleasant! They did a great job getting us out of Toronto and into Rome (early!) For an international flight it was very enjoyable.

This is not a Business Class equipped airplane and even the crew apologize before take over BUT BUT Air Canada charged full business class fare

All was good, except our baggage was lost for most of a day. We are thankful that it was found quickly and delivered to our hotel. Rouge was fine outside of that problem.

- 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!!!

It was ok, not as good as it used to be. The Heathrow connection was a disaster - complete anarchy, unknowledgable and skimpy assistance and signage. Gate crew at next flight was great, held the flight while my wife struggled through security.

It was great! The seats were comfortable, and they fed me during the transatlantic flight, something which I have been missing out on for the past 3 years as I travel to and from school.

This flight was cancelled at the last minute. We were rebooked on another flight but a day later. We lost a day of our vacation and paid for a night in a hotel we couldn’t use. The flights we were rebooked on (both American) messed up our seating on both flights-we didn’t get the seats we had paid for. All in all, a terrible experience.

Lost our bags in Heathrow, We didn’t receive bags in Mallorca for 3 days, out of a 7 day cycling vacation. Really inconvenient and disappointing!

We missed the flight to Barcelona because the flight from Baltimore was delayed. We flew on Vueling VW6653. Our luggage didn’t arrive. Please help us get our luggage. We are staying at Hotel Gran Via in Barcelona

The seats were tiny, being of a fairly petite build, I don’t usually expect to feel crammed and cramped in a seat, but I definitely was on this flight. I couldn’t even bend over to get anything out from under the seat in front and getting up to go to the bathroom at night with the seat backs reclined was nearly impossible. I had to do gymnastics to get over and out. For an airline that does long flights overnight, it’s kind of ridiculous.

Not connecting flights. Missed my flight from Dublin to Liverpool because I arrived at Dublin one hour too late. For this mistake, they offered me a flight from Dublin to Manchester. Thats great and all, but I waste time and money to commute to Liverpool. Be sure to check the time of your connecting flights, because they sure don’t when they sell it to you

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.
9/30Mon
3 stops
23h 25mSEA-LIS
$324
10/13Sun
3 stops
23h 00mSEA-LIS
$325
9/30Mon
2 stops
20h 15mSEA-LIS
$336
10/8Tue
1 stopAer Lingus
18h 50mSEA-LIS
$588
9/30Mon
1 stopAer Lingus
18h 50mSEA-LIS
$645
6/10Mon
1 stopBritish Airways
18h 10mSEA-LIS
$865
11/1Fri
2 stopsAmerican Airlines
21h 57mSEA-LIS
$872
6/17Mon
2 stopsAmerican Airlines
39h 25mSEA-LIS
$873
7/16Tue
2 stopsUnited Airlines
26h 00mSEA-LIS
$932
7/21Sun
2 stopsUnited Airlines
23h 50mSEA-LIS
$938

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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.
5/21Tue
multi-stopKLM
17h 05mSEA-LIS
5/28Tue
multi-stopKLM
26h 35mLIS-SEA
$1,132
5/21Tue
multi-stop
23h 39mSEA-LIS
5/28Tue
multi-stop
21h 14mLIS-SEA
$1,200
5/18Sat
multi-stop
14h 15mSEA-LIS
5/20Mon
multi-stop
34h 40mLIS-SEA
$1,240
5/18Sat
multi-stop
20h 50mSEA-LIS
5/20Mon
multi-stop
24h 41mLIS-SEA
$1,270
5/19Sun
multi-stopUnited Airlines
18h 24mSEA-LIS
5/26Sun
multi-stopUnited Airlines
33h 03mLIS-SEA
$1,980
5/19Sun
multi-stopUnited Airlines
17h 42mSEA-LIS
5/26Sun
multi-stopUnited Airlines
33h 03mLIS-SEA
$1,985
5/17Fri
multi-stopTurkish Airlines
31h 15mSEA-LIS
5/25Sat
multi-stopTurkish Airlines
37h 45mLIS-SEA
$2,024
5/21Tue
multi-stopLufthansa
27h 25mSEA-LIS
6/7Fri
multi-stopLufthansa
33h 02mLIS-SEA
$2,164
5/21Tue
multi-stopAmerican Airlines
23h 50mSEA-LIS
5/28Tue
multi-stopAmerican Airlines
34h 42mLIS-SEA
$2,180
5/17Fri
multi-stopAmerican Airlines
36h 20mSEA-LIS
5/20Mon
multi-stopAmerican Airlines
18h 45mLIS-SEA
$2,381

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Seattle - Lisbon Flights

Departure:

Seattle (undefined)United States

Destination:

Lisbon (LIS)Portugal

Return flight deals:

Lisbon - Seattle

Cabin classes:

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