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Find cheap flights from Seattle to Portugal from $277

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 Portugal departing on 10/24. 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
Wed 7/10
Wed 7/17

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Best Portugal Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Lisbon
Lisbon2 stops$595
Porto
Porto1 stop$610
Ponta Delgada
Ponta Delgada2 stops$1,026
Funchal
Funchal3 stops$740
Faro
Faro2 stops$731
Lajes
Lajes2 stops$1,385
Pico Island
Pico Island2 stops$1,554

Good to know

Low season

January

High season

September

Cheapest flight

$277
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from Seattle to Lisbon

FAQs - booking Portugal flights

  • Is it necessary to get a visa before flying from Seattle to Portugal?

    Since Portugal is a part of the Shenzhen area, there's no need to get a visa if you don't plan on staying for more than 90 days in this country or any other country in the area. It is important to remember to bring a valid passport that will remain valid for at least 90 days beyond your intended date of departure from Portugal.

  • What is the quickest way to get to Lajes Airport (TER)?

    You can travel on a one-stop flight that utilizes Alaska Airlines and Azores Airlines to go to the airport from Seattle Tacoma International Airport with a layover at Boston Logan International Airport. You can also utilize Delta Air Lines or JetBlue to make the trip between Seattle and Boston.

  • Is there anything for kids to do at the airport in Seattle before a flight?

    One of the best options to entertain kids during their stay at the airport before a flight to Portugal is to take them to the children's play area that has a location right across from the Seattle Taproom that you will find between the Central Terminal and the A gates at the airport. Most days at the airport, there's also something called City of Music that consists of live music performances that occur throughout the airport property.

  • What makes a good choice for a sustainable airline on this route?

    TAP Air Portugal has made sustainability a top priority, with a focus on reducing carbon emissions and promoting environmentally friendly practices. The airline is committed to investing in new, more fuel-efficient aircraft and has implemented a number of initiatives to reduce waste and promote recycling. TAP Air Portugal has also been recognized for its efforts in sustainability, including receiving the Eco-Innovation Award from the European Union in 2015 and being named the Most Efficient Airline in Europe by Air Transport World in 2018.

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

    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 Portugal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portugal 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 Portugal?

    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 Portugal with an airline and back to Seattle with another airline.

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

    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 Portugal from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Portugal

  • Morning departure is around 16% more expensive than an evening flight, on average*.
  • One of the most frequent airport destinations in Portugal is the Humberto Delgado Airport (LIS). From Seattle Tacoma International Airport (SEA), one route choice is to travel on a one-stop flight aboard American Airlines with a layover at Philadelphia International Airport (PHL).
  • When you are looking for one of the quickest ways to get to Francisco Sá Carneiro Airport (OPO) from Seattle Tacoma International Airport, you can travel on a one-stop flight on Air Canada and Air Transat that has a layover at Montréal-Pierre Elliott Trudeau International Airport (YUL).
  • If your flight from Seattle Tacoma International Airport is aboard British Airways, you will find that this airline has a lounge location in the south satellite of the airport.
  • Travelers looking for the quickest way to make their way to Faro International Airport (FAO) from Seattle Tacoma International Airport will find that the one-stop flight or a combination of Air Canada and Air Transat that has a layover at Toronto Pearson International Airport (YYZ) is one of the best options.
  • When your goal is to reach the Aeroporto João Paulo II (PDL) from Seattle Tacoma International Airport, one option is to travel on a one-stop flight that utilizes Air Canada and Azores Airlines with a layover at Montréal-Pierre Elliott Trudeau International Airport.
See more tips
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Seattle to Portugal

Need help choosing which airline to fly with from Seattle to Portugal? 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 10295 reviews
7.4Food
7.9Comfort
8.6Crew
8.0Entertainment
8.2Boarding
Airline reviews

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

4.0 OkayDavwinder Singh, Jun 2024SEA - ATL
Read more about Delta reviews

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

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.

My only issue was my meal was inedible except for the sides.

Medíocre. The food wasn't good (although not bad, bad) and the staff wasn't kind. I asked for n extra blanket, the steward never came back, serving us roughly.

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

Excellent apart from transport to actual plane 10 minutes from the actual gate , walking out in the tarmac in the rain and having to climb stairs to enter while holding luggage.

Boarding was smooth and on time. The seat was comfortable and the entertainment worked. Staff were gracious.

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

Why does it have to be painful to fly long distances?

It is a modern tragedy that any airline expects you to travel for 14 hours in such discomfort and that the only way to add comfort is exorbitant prices. I was in pain by the time we landed. Shameful.

Original plane sidelined. Had to wait an hour for replacement.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

No real agent onsite helping you for missing luggage there. Not like the other airline next to UA desk, they have staff attending in their desk assisting answer/helping luggage issue, even after midnight.

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

Food is very bad and entertint not too many options ... flight attendet service is not good

After the morning frenzy of 35 min wait through CLT security at 4;30 AM, it was nice to have a smooth pleasant boarding experience. This 6:30 AM flight was not full. We were able to get seated swiftly and took off promptly. Nice touch they distributed the old fashioned headsets with 8 mm jacks. Snacks were decent and arrival was uneventful.

My window shade didn’t work. So I missed coming into my city. ☹️

Flight was delayed in the gate by 5 hours and ultimately cancelled- rebooking service by United agents was terrible

There was a mistake with the first name we only discovered at security. Air canada was unable to correct it to match then passport since it was booked through an agency. The agency could not correct it either since they need at least two hours to do that. We could not fly and lost a bunch of money. Learned my lesson about kayak.

My flight got canceled. Then AC rebooked me to a next day flight. No compensation no apology. It almost messed up my entire trip and schedule. However, all the unexpepected seems routine and ordinary to AC, so customers need to get used to.

The food was horrible the flying attendance hardly made any checks and the seats were very tied ..

I love air Canada. The staff is so helpful and friendly and attentive. I paid for extra room but chose a ser near a person who took up a lot of space which gave me less space than regular economy, I was sad I did that!

I appreciated the flight was on schedule but the crew told us that the flight would be delayed because of an air craft queue to take off. Instead of us arriving at 11.55pm, we were in Toronto at something past 2am which was a massive disadvantage on my part.

For such a long flight they should offer tea or coffee in between two meals.

No seat assignment . Last on board . Though I would not receive any boarding pass

last minute was rebooked. This rebooking made me miss my connection, added a stop in my itinerary without my approval, and had me arriving 10 hours later to my destination...for a delay that was 2 hours. To boot, my final flight from London to Athens booked me in a middle seat, where I originally booked all aisle seats. This was incredibly uncomfortable for a 24 hour journey and made me incredibly upset.

Did not appreciate “hidden fees” to check a bag for international flight and purchase a seat to be next to my spouse. Won’t choose this airline again.

The flight left over 2 hours late and caused me to miss my connecting flight. Consequently, I missed my cruise ship out of Barcelona. The cost associated with this miss was as follows: Airfare to Sicily Italy to get on the ship TWO days late - $232.30 Taxi from Airport to hotel $35 Dinner at hotel $38 Hotel in Barcelona - $208 Taxi from Sicily to hotel $70 Hotel in Sicily - $148 Prorated time missed on cruise $ 1,143

Economy class has no legroom so if you have the money worth to upgrade! Food was absolutely horrible! The crew was super nice!!!!!

The flight was provided by Aer Lingus and our seats were in a poor condition (15A & 15C). They looked like they needed repairing/replacing and were uncomfortable for such a long flight. Also the arm rests on Aer Lingus planes do not lift more than around 45 degrees, instead of the usual 90 degrees upright, meaning you cannot maximum the space between you & your travel companion so as to be more comfortable for such a long flight.

Flights were actually with Aer Lingus outward and American Airlines & Aer Lingus on the return journey. Outward flight with Aer Lingus was good but the return flight with them was not so good as our seats were in a poor condition (15A & 15C) and looked like they needed replacing! The American Airlines flight from Miami to JFK New York was good and the seats were very comfortable and spacious (32D & 32E)

Awful. Delay, lost vacation time and travel time now more than 24h

Awful. Flight delayed and we missed our long flight to Rome. It has been a nightmare and we have still not arrived. It was NOT a weather delay, just poor planning by AA

Boarding was as fast and efficient as possible. The flight crew were amazing and extremely friendly. We enjoyed our flight.

Very bed boarding, there was overbooked and make a lot of problems and noises

There was a problem in the luggage because there were not porters

On my way from Chicago to London, I was seated next to a quite heavy passenger. I could barely move. BA should have ensured that overweight customers are placed in comfortable seats and not to penalize also other passengers because BA is not willing to accommodate these passengers and their needs. No respect at all.

The flight as far as timings go was excellent. Unfortunately we ended up sat with someone on a night flight who had been drinking alcohol before boarding and BA staff were happily serving him more alcohol. He was very drunk which made our flight uncomfortable and awkward. My partner had this person lying on him whilst asleep. Alcohol should be served minimally. If there had been an emergency this person would not have been in a fit state to act accordingly.

Book cheap flights from Seattle to Portugal

Recent round-trip flight deals

11/12Tue
2 stopsAir Canada
19h 30mSEA-LIS
12/3Tue
2 stopsAir Canada
35h 31mLIS-SEA
$595
11/12Tue
1 stopAir Canada
15h 35mSEA-LIS
11/27Wed
2 stopsAir Canada
18h 56mLIS-SEA
$601
11/17Sun
1 stopUnited Airlines
18h 30mSEA-LIS
11/29Fri
1 stopUnited Airlines
15h 10mLIS-SEA
$602
11/13Wed
1 stopBritish Airways
15h 00mSEA-LIS
12/4Wed
1 stopBritish Airways
18h 28mLIS-SEA
$604
11/13Wed
1 stopDelta
17h 40mSEA-LIS
12/3Tue
1 stopDelta
14h 50mLIS-SEA
$609
11/13Wed
1 stopDelta
17h 40mSEA-LIS
12/2Mon
1 stopDelta
30h 50mLIS-SEA
$612
10/30Wed
1 stopAir France
18h 30mSEA-LIS
2/11Tue
1 stopAir France
17h 33mLIS-SEA
$618
11/18Mon
2 stopsUnited Airlines
16h 10mSEA-LIS
12/2Mon
1 stopUnited Airlines
31h 55mLIS-SEA
$623
11/1Fri
1 stopBritish Airways
14h 35mSEA-LIS
2/7Fri
1 stopBritish Airways
18h 31mLIS-SEA
$654
10/30Wed
1 stopAir France
20h 55mSEA-LIS
2/9Sun
1 stopAir France
17h 33mLIS-SEA
$668

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Recent one-way flight deals

10/24Thu
2 stops
19h 55mSEA-LIS
$277
10/7Mon
3 stops
25h 30mSEA-LIS
$313
11/13Wed
1 stopAer Lingus
30h 05mSEA-LIS
$519
11/13Wed
3 stopsUnited Airlines
19h 51mSEA-LIS
$567
11/18Mon
3 stopsUnited Airlines
29h 51mSEA-LIS
$573
8/2Fri
1 stopAer Lingus
31h 30mSEA-LIS
$584
9/25Wed
1 stopAir Canada
17h 40mSEA-LIS
$668
9/23Mon
1 stopAir Canada
28h 00mSEA-LIS
$695
9/1Sun
2 stopsBritish Airways
27h 19mSEA-LIS
$753
9/3Tue
1 stopBritish Airways
15h 30mSEA-FAO
$834

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Last minute flights from Seattle to Portugal

Last minute flight, train and bus deals

6/11Tue
multi-stop
14h 25mSEA-LIS
6/26Wed
multi-stop
16h 10mLIS-SEA
$1,283
6/11Tue
multi-stop
21h 00mSEA-LIS
6/25Tue
multi-stop
17h 50mLIS-SEA
$1,289
6/13Thu
multi-stop
27h 25mSEA-LIS
6/20Thu
multi-stop
31h 42mLIS-SEA
$1,291
6/13Thu
multi-stop
27h 25mSEA-LIS
6/20Thu
multi-stop
31h 42mLIS-SEA
$1,292
6/13Thu
multi-stop
27h 25mSEA-LIS
6/20Thu
multi-stop
31h 18mLIS-SEA
$1,327
6/11Tue
multi-stopWestJet
20h 05mSEA-LIS
6/25Tue
multi-stopWestJet
22h 41mLIS-SEA
$2,207
6/14Fri
multi-stopWestJet
31h 25mSEA-LIS
6/26Wed
multi-stopWestJet
22h 41mLIS-SEA
$2,316
6/12Wed
multi-stopAir Canada
19h 25mSEA-LIS
6/26Wed
multi-stopAir Canada
18h 55mLIS-SEA
$2,534
6/12Wed
multi-stopAmerican Airlines
23h 51mSEA-LIS
6/20Thu
multi-stopAmerican Airlines
20h 17mLIS-SEA
$2,823
6/15Sat
multi-stopAmerican Airlines
31h 45mSEA-LIS
6/27Thu
multi-stopAmerican Airlines
36h 30mLIS-SEA
$5,491

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Seattle - Portugal Flights

Departure:

Seattle (SEA)United States

Return flight deals:

Portugal - Seattle

Cabin classes: