$245+ Cheap flights from Seattle (SEA) to Lisbon (LIS)
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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LIS
Sep 5 — Sep 121
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Lisbon with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Lisbon
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to LisbonExplore 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 August 6, 2026.
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 August 6, 2026.
This oojo deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:35 pm -
1 stop14h 15m
Sun 12/132:00 pm -
1 stop35h 00m
Deal found 8/3![Icelandair logo]()
$699
This Justfly.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop14h 15m
Tue 12/82:00 pm -
1 stop35h 00m
Deal found 8/3![Icelandair logo]()
$709
This Gotogate deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/210:10 am -
2 stops16h 30m
Wed 11/115:00 am -
2 stops17h 37m
Deal found 8/2![Multiple Airlines logo]()
$713
This Expedia deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/308:40 am -
2 stops16h 40m
Wed 12/95:00 am -
1 stop15h 00m
Deal found 8/2![Multiple Airlines logo]()
$725
This oojo deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:50 pm -
1 stop14h 40m
Wed 11/185:00 am -
2 stops22h 03m
Deal found 8/1![Lufthansa logo]()
$732
This Justfly.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/83:15 pm -
2 stops35h 25m
Wed 11/185:00 am -
1 stop15h 00m
Deal found 8/1![Lufthansa logo]()
$736
This Air Canada deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:05 pm -
2 stops31h 35m
Thu 12/105:00 am -
2 stops17h 37m
Deal found 8/3![Air Canada logo]()
$742
Best flights from Seattle to LisbonDiscover carefully curated flight deals from Seattle to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
Discover carefully curated flight deals from Seattle to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
This FlightHub deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:10 am -
2 stops39h 10m
Mon 11/233:35 pm -
2 stops39h 43m
Deal found 8/5![Multiple Airlines logo]()
$748
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/143:25 pm -
1 stop15h 45m
Fri 12/255:30 am -
1 stop17h 43m
Deal found 8/3![Delta logo]()
$782
This United Airlines deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3111:59 pm -
2 stops25h 11m
Wed 11/45:00 am -
1 stop15h 00m
Deal found 7/31![United Airlines logo]()
$827
This KLM deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:50 pm -
1 stop20h 55m
Thu 9/175:00 am -
1 stop19h 35m
Deal found 8/5![KLM logo]()
$978
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:15 am -
2 stops19h 40m
Fri 10/25:00 am -
1 stop14h 52m
Deal found 8/5![Delta logo]()
$814
This United Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:00 am -
2 stops19h 30m
Thu 10/112:20 pm -
3 stops33h 57m
Deal found 8/3![United Airlines logo]()
$831
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:15 am -
2 stops19h 40m
Mon 9/285:00 am -
2 stops19h 44m
Deal found 8/3![Delta logo]()
$884
This United Airlines deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/57:45 am -
1 stop17h 35m
Thu 1/711:20 am -
2 stops33h 25m
Deal found 8/4![United Airlines logo]()
$894
Last-minute flights from Seattle to LisbonDiscover last-minute flight deals from Seattle to Lisbon. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Lisbon. Data last updated August 6, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:50 am -
3 stops28h 45m
Thu 9/177:20 pm -
2 stops24h 35m
Deal found 8/1![Multiple Airlines logo]()
$766
This Mytrip deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:50 am -
3 stops30h 45m
Mon 10/54:55 pm -
3 stops29h 27m
Deal found 8/1![Multiple Airlines logo]()
$771
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:30 pm -
1 stop20h 20m
Tue 12/225:00 am -
1 stop14h 50m
Deal found 8/4![Delta logo]()
$775
This FlightHub deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:50 pm -
1 stop19h 55m
Tue 12/226:05 am -
2 stops23h 52m
Deal found 8/1![Multiple Airlines logo]()
$778
This Air Canada deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:50 am -
2 stops21h 15m
Tue 12/226:05 am -
2 stops20h 17m
Deal found 8/1![Air Canada logo]()
$779
This Air France deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:30 pm -
1 stop20h 20m
Tue 12/225:30 am -
1 stop16h 20m
Deal found 8/1![Air France logo]()
$782
This Gotogate deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:00 am -
1 stop19h 05m
Tue 9/296:45 am -
2 stops19h 47m
Deal found 8/3![Multiple Airlines logo]()
$784
This Mytrip deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/275:40 pm -
3 stops30h 50m
Tue 10/139:15 pm -
2 stops26h 25m
Deal found 8/2![Multiple Airlines logo]()
$767
This Gotogate deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:00 pm -
1 stop34h 50m
Tue 10/133:00 pm -
1 stop13h 40m
Deal found 8/2![Icelandair logo]()
$769
This Cheapflightsfares deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/303:40 pm -
1 stop14h 10m
Tue 10/133:00 pm -
1 stop13h 40m
Deal found 8/1![Icelandair logo]()
$751
One-way flights from Seattle to LisbonSearch for one-way flight options from Seattle to Lisbon. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
Search for one-way flight options from Seattle to Lisbon. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:21 am -
3 stops41h 09m
Deal found 8/4![Multiple Airlines logo]()
$245
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/83:40 pm -
3 stops44h 10m
Deal found 8/2![Multiple Airlines logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:00 am -
3 stops30h 45m
Deal found 8/3![WestJet logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3111:25 pm -
3 stops36h 45m
Deal found 7/31![Multiple Airlines logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:52 am -
3 stops29h 28m
Deal found 8/3![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/222:35 pm -
2 stops22h 25m
Deal found 8/3![Multiple Airlines logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/411:25 pm -
2 stops40h 05m
Deal found 8/2![Multiple Airlines logo]()
$360
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2911:25 pm -
2 stops37h 40m
Deal found 8/3![Multiple Airlines logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:40 pm -
2 stops23h 45m
Deal found 8/4![Multiple Airlines logo]()
$364
Find 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 August 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $699 (oojo) |
One-way from | $245 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $940 |
Cheapflights Fare Finder
Customize 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 2,558,603 searches. Data last updated August 6, 2026.
Use the filters below to find and compare flights from Seattle to Lisbon that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Mon 11/9
10:10 am-9:20 am
2 stops39h 10m
Lisbon Humberto Delgado
Mon 11/23
3:35 pm-11:18 pm
2 stops39h 43m
$748
Quickest round-trip
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Mon 12/14
3:25 pm-3:10 pm
1 stop15h 45m
Lisbon Humberto Delgado
Fri 12/25
5:30 am-3:13 pm
1 stop17h 43m
$782
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Tue 9/22
7:15 am-10:55 am
2 stops19h 40m
Lisbon Humberto Delgado
Fri 10/2
5:00 am-11:52 am
1 stop14h 52m
$814
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Sat 10/31
11:59 pm-8:10 am
2 stops25h 11m
Lisbon Humberto Delgado
Wed 11/4
5:00 am-12:00 pm
1 stop15h 00m
$827
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Mon 9/21
7:00 am-10:30 am
2 stops19h 30m
Lisbon Humberto Delgado
Thu 10/1
12:20 pm-2:17 pm
3 stops33h 57m
$831
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Mon 9/21
7:15 am-10:55 am
2 stops19h 40m
Lisbon Humberto Delgado
Mon 9/28
5:00 am-4:44 pm
2 stops19h 44m
$884
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Tue 1/5
7:45 am-9:20 am
1 stop17h 35m
Lisbon Humberto Delgado
Thu 1/7
11:20 am-12:45 pm
2 stops33h 25m
$894
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Wed 9/9
1:50 pm-6:45 pm
1 stop20h 55m
Lisbon Humberto Delgado
Thu 9/17
5:00 am-4:35 pm
1 stop19h 35m
$978
Cheapest one-way
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Sun 8/30
7:00 am-9:45 pm
3 stops30h 45m
$317
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Wed 11/25
8:09 am-8:10 am
2 stops16h 01m
$388
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from Seattle to Lisbon
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Lisbon in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Seattle-Lisbon flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Lisbon flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Lisbon flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Lisbon flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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.
SEA-LIS
Estimated round-trip 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.
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?
To ensure you get the cheapest price possible for a flight from Seattle to Lisbon, you should look to book at least 80 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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 $481). Flying from Seattle to Lisbon in June is currently the most expensive (average of $1,238). 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 to fly round-trip from Seattle to Lisbon?
Airfare is below average for this route at the moment.
Seattle to Lisbon flights typically cost between $885 and $1,117 in December.The cheapest round-trip price found within the last 5 days was $699 on Icelandair (Dec 2-Dec 13).
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 August 6, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andIcelandair from Seattle to Lisbon by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Crew
8.5
Food
7.2
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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.
Traveling to a place near Lisbon?
Book flights to Lisbon if you plan to visit one of these locationsFátima
Ericeira
Oeiras
Beja
Torres Vedras
Nazaré
Colares
Sesimbra
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Explore flights to Lisbon departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 6, 2026.
Seattle and Lisbon flights
Browse other Seattle and Lisbon flight options. Last updated on August 6, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on August 6, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 10 airlines flying from Seattle to Lisbon
Discover the top 10 airlines that operate flights from Seattle to Lisbon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$348 | Average$427 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$475 | Average$696 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$482 | Average$765 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$488 | Average$869 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$497 | Average$1,042 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$503 | Average$989 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$505 | Average$867 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$523 | Average$731 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$543 | Average$1,081 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$550 | Average$1,019 | FlexibilityNo cancel fee | On-timeN/A |