$297+ Cheap flights from Seattle (SEA) to Lisbon (LIS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LIS
Nov 23 — Nov 301
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 October 24, 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 October 24, 2026.
This Booking.com deal was found by Cheapflights users on 10/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:35 pm -
1 stop14h 15m
Tue 12/82:00 pm -
1 stop35h 00m
Deal found 10/21![Icelandair logo]()
$653
This Booking.com deal was found by Cheapflights users on 10/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop14h 10m
Tue 12/82:00 pm -
1 stop35h 00m
Deal found 10/22![Icelandair logo]()
$668
This Gotogate deal was found by Cheapflights users on 10/20. 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.
Wed 12/22:35 pm -
1 stop14h 15m
Sun 12/62:00 pm -
1 stop35h 00m
Deal found 10/20![Icelandair logo]()
$705
This Justfly.com deal was found by Cheapflights users on 10/21. 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 12/72:35 pm -
1 stop14h 15m
Sun 12/132:00 pm -
1 stop35h 00m
Deal found 10/21![Icelandair logo]()
$715
This Mytrip deal was found by Cheapflights users on 10/20. 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 12/22:35 pm -
3 stops33h 55m
Tue 12/86:25 pm -
3 stops30h 35m
Deal found 10/20![Multiple Airlines logo]()
$721
This Icelandair deal was found by Cheapflights users on 10/23. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop14h 10m
Tue 12/12:00 pm -
1 stop35h 00m
Deal found 10/23![Icelandair logo]()
$733
This Globehunters deal was found by Cheapflights users on 10/23. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:35 pm -
1 stop14h 15m
Tue 12/12:00 pm -
1 stop35h 00m
Deal found 10/23![Icelandair logo]()
$738
This Mytrip deal was found by Cheapflights users on 10/20. 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.
Tue 12/17:45 am -
2 stops24h 00m
Tue 12/86:25 pm -
2 stops26h 35m
Deal found 10/20![Multiple Airlines logo]()
$740
This Gotogate deal was found by Cheapflights users on 10/21. 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.
Wed 11/182:50 pm -
1 stop24h 40m
Wed 11/255:00 am -
1 stop15h 00m
Deal found 10/21![Lufthansa logo]()
$747
This Icelandair deal was found by Cheapflights users on 10/23. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop14h 10m
Sun 12/62:00 pm -
1 stop35h 00m
Deal found 10/23![Icelandair logo]()
$753
This Expedia deal was found by Cheapflights users on 10/20. 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.
Wed 12/93:25 pm -
1 stop18h 05m
Tue 12/155:30 am -
1 stop16h 20m
Deal found 10/20![Air France logo]()
$754
This SmartFares deal was found by Cheapflights users on 10/20. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/98:40 am -
2 stops16h 15m
Tue 12/152:20 pm -
1 stop30h 40m
Deal found 10/20![Multiple Airlines logo]()
$755
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 October 24, 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 October 24, 2026.
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Wed 12/92:50 pm -
1 stop14h 40m
Tue 12/1512:20 pm -
2 stops19h 24m
Deal found 10/21![United Airlines logo]()
$774
This Globehunters deal was found by Cheapflights users on 10/24. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/62:50 pm -
1 stop24h 40m
Sat 1/165:00 am -
1 stop15h 00m
Deal found 10/24![Lufthansa logo]()
$824
This Delta deal was found by Cheapflights users on 10/20. 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.
Sun 11/83:25 pm -
1 stop18h 05m
Tue 11/1711:30 am -
1 stop32h 17m
Deal found 10/20![Delta logo]()
$827
This Air France deal was found by Cheapflights users on 10/24. 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.
Wed 1/63:25 pm -
1 stop18h 05m
Sat 1/169:40 am -
2 stops20h 25m
Deal found 10/24![Multiple Airlines logo]()
$842
This Virgin Atlantic deal was found by Cheapflights users on 10/21. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:59 pm -
1 stop26h 01m
Wed 11/1110:00 am -
1 stop21h 00m
Deal found 10/21![Virgin Atlantic logo]()
$855
This Turkish Airlines deal was found by Cheapflights users on 10/23. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/127:05 pm -
1 stop20h 20m
Fri 1/155:55 am -
1 stop19h 15m
Deal found 10/23![Turkish Airlines logo]()
$1,151
This United Airlines deal was found by Cheapflights users on 10/22. 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 12/18:09 am -
1 stop17h 56m
Sun 12/65:00 am -
1 stop15h 00m
Deal found 10/22![United Airlines logo]()
$792
This Delta deal was found by Cheapflights users on 10/23. 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.
Sun 11/86:00 am -
2 stops21h 25m
Wed 11/185:00 am -
2 stops19h 30m
Deal found 10/23![Delta logo]()
$842
This United Airlines deal was found by Cheapflights users on 10/21. 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 10/3110:56 pm -
2 stops26h 14m
Wed 11/116:00 am -
2 stops22h 56m
Deal found 10/21![United Airlines logo]()
$878
This Delta deal was found by Cheapflights users on 10/21. 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.
Sat 1/162:25 pm -
1 stop16h 15m
Fri 1/2211:30 am -
1 stop32h 19m
Deal found 10/21![Delta logo]()
$896
This Delta deal was found by Cheapflights users on 10/23. 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.
Sat 11/2111:07 pm -
1 stop25h 48m
Mon 12/711:15 am -
1 stop19h 40m
Deal found 10/23![Delta logo]()
$957
Last-minute flights from Seattle to LisbonDiscover last-minute flight deals from Seattle to Lisbon. Data last updated October 24, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Lisbon. Data last updated October 24, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 10/20. 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 11/177:05 pm -
2 stops27h 50m
Tue 11/246:05 am -
2 stops20h 17m
Deal found 10/20![Multiple Airlines logo]()
$764
This Gotogate deal was found by Cheapflights users on 10/21. 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.
Wed 11/182:50 pm -
1 stop24h 40m
Wed 11/255:00 am -
1 stop15h 00m
Deal found 10/21![Lufthansa logo]()
$747
This Booking.com deal was found by Cheapflights users on 10/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop14h 10m
Tue 12/82:00 pm -
1 stop35h 00m
Deal found 10/22![Icelandair logo]()
$668
This Icelandair deal was found by Cheapflights users on 10/23. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop14h 10m
Tue 12/12:00 pm -
1 stop35h 00m
Deal found 10/23![Icelandair logo]()
$733
This Icelandair deal was found by Cheapflights users on 10/23. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:35 pm -
1 stop14h 10m
Sun 12/62:00 pm -
1 stop35h 00m
Deal found 10/23![Icelandair logo]()
$753
This Gotogate deal was found by Cheapflights users on 10/22. 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 11/237:45 am -
1 stop17h 35m
Tue 12/86:05 am -
2 stops20h 17m
Deal found 10/22![Air Canada logo]()
$771
This Gotogate deal was found by Cheapflights users on 10/22. 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 11/2310:10 am -
2 stops16h 30m
Tue 12/86:05 am -
2 stops20h 17m
Deal found 10/22![Multiple Airlines logo]()
$772
This Delta deal was found by Cheapflights users on 10/22. 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 11/237:15 am -
1 stop16h 45m
Tue 12/811:30 am -
1 stop32h 20m
Deal found 10/22![Delta logo]()
$774
This Gotogate deal was found by Cheapflights users on 10/21. 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 11/247:45 am -
1 stop17h 35m
Fri 12/46:00 am -
1 stop15h 00m
Deal found 10/21![Multiple Airlines logo]()
$761
This Globehunters deal was found by Cheapflights users on 10/23. 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 Globehunters is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:35 pm -
1 stop14h 15m
Tue 12/12:00 pm -
1 stop35h 00m
Deal found 10/23![Icelandair logo]()
$738
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 October 24, 2026.
Search for one-way flight options from Seattle to Lisbon. Find affordable one-way fares based on user searches. Data last updated October 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/162:35 pm -
2 stops35h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/152:35 pm -
3 stops47h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/82:35 pm -
3 stops47h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/229:11 pm -
1 stop30h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/144:27 pm -
2 stops33h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Wed 12/92:35 pm -
3 stops46h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 12/42:35 pm -
2 stops25h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$348
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 October 24, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $653 (Booking.com) |
One-way from | $297 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $918 |
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 7,457,451 searches. Data last updated October 24, 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 11/16
2:35 pm-9:30 pm
3 stops46h 55m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$329
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Wed 12/9
2:35 pm-8:55 pm
3 stops46h 20m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$338
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Sun 11/8
2:35 pm-8:55 am
2 stops34h 20m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$344
Quickest round-trip
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Sat 12/5
2:35 pm-12:50 pm
1 stop14h 15m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$430
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Wed 11/18
2:35 pm-9:55 pm
3 stops23h 20m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$440
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Wed 11/18
2:35 pm-12:50 pm
1 stop14h 15m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$468
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Sun 1/3
2:50 pm-1:30 pm
1 stop14h 40m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$586
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Fri 11/6
2:30 pm-8:30 am
3 stops34h 00m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$586
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Mon 1/4
3:25 pm-3:10 pm
1 stop15h 45m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$587
SeattleLisbon
SEA Seattle/Tacoma Intl - LIS Lisbon Humberto Delgado
SEALIS
Seattle/Tacoma Intl
Tue 1/5
4:05 pm-3:10 pm
1 stop15h 05m
Lisbon Humberto Delgado
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$587
Showing 1-10 of 21 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 October.
| 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 |
- Most accurate provider: When it comes to deals on Seattle-Lisbon flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Seattle-Lisbon flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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 $492). Flying from Seattle to Lisbon in June is currently the most expensive (average of $1,235). 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 $702 and $974 in December.The cheapest round-trip price found within the last 5 days was $653 on Icelandair (Dec 2-Dec 8).
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 October 24, 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.
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Overall
7.8
Crew
8.5
Food
7.2
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
Torres Vedras
Beja
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.
Alternative routes
Complete your trip
Flights by cabin class
Lisbon flight routes
Other flight options
Other flights from Seattle
Popular flights
Alternative routes for Seattle to Lisbon
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Lisbon by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Lisbon by cabin class
Find flights from Seattle to Lisbon, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Lisbon
Explore flights to Lisbon departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 24, 2026.
Seattle and Lisbon flights
Browse other Seattle and Lisbon flight options. Last updated on October 24, 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 October 24, 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 7,457,451 searches. Data last updated October 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$372 | Average$463 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$471 | Average$712 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$482 | Average$798 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$482 | Average$899 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$493 | Average$1,032 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$504 | Average$879 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$550 | Average$1,044 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$567 | Average$706 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$649 | Average$980 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$682 | Average$844 | FlexibilityNo cancel fee | On-time77% |