$431+ Cheap flights from Portugal to Seattle (SEA)
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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — SEA
Nov 20 — Nov 271
Round-trip
1 adult, Economy
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Find cheap flights from Portugal to Seattle 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
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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 Portugal to Seattle
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Cheapest flights from Portugal to SeattleExplore the most affordable flight options available from Portugal to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 21, 2026.
Explore the most affordable flight options available from Portugal to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 11/96:10 am -
1 stop18h 50m
Mon 11/166:45 pm -
1 stop16h 40m
Deal found 10/19![Multiple Airlines logo]()
$678
This Gotogate deal was found by Cheapflights users on 10/17. 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 11/222:00 pm -
1 stop35h 00m
Sat 12/52:35 pm -
1 stop14h 15m
Deal found 10/17![Icelandair logo]()
$765
This Mytrip deal was found by Cheapflights users on 10/19. 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 11/228:35 am -
2 stops32h 57m
Sat 12/510:10 am -
2 stops25h 10m
Deal found 10/19![Multiple Airlines logo]()
$809
This Mytrip deal was found by Cheapflights users on 10/16. 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.
Thu 11/52:30 pm -
3 stops30h 30m
Mon 11/93:15 pm -
3 stops32h 55m
Deal found 10/16![Multiple Airlines logo]()
$813
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 11/1712:00 pm -
3 stops33h 00m
Tue 11/243:15 pm -
3 stops32h 55m
Deal found 10/20![Multiple Airlines logo]()
$815
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.
Thu 11/192:30 pm -
3 stops30h 30m
Wed 11/253:15 pm -
3 stops25h 15m
Deal found 10/20![Multiple Airlines logo]()
$828
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 12/23:35 pm -
3 stops33h 25m
Wed 12/92:35 pm -
3 stops35h 55m
Deal found 10/20![Multiple Airlines logo]()
$828
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 11/172:40 pm -
2 stops30h 20m
Tue 11/243:15 pm -
2 stops17h 15m
Deal found 10/20![Multiple Airlines logo]()
$839
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.
Thu 11/59:50 am -
2 stops20h 07m
Wed 11/183:15 pm -
2 stops20h 05m
Deal found 10/20![Multiple Airlines logo]()
$855
This Mytrip deal was found by Cheapflights users on 10/18. 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.
Thu 11/1911:30 am -
3 stops33h 30m
Fri 12/43:15 pm -
2 stops22h 05m
Deal found 10/18![Multiple Airlines logo]()
$857
This Mytrip deal was found by Cheapflights users on 10/18. 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 12/24:10 pm -
3 stops32h 50m
Wed 12/92:35 pm -
3 stops35h 55m
Deal found 10/18![Multiple Airlines logo]()
$877
This oojo deal was found by Cheapflights users on 10/17. 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.
Sat 11/74:10 pm -
2 stops38h 57m
Thu 11/2610:50 am -
2 stops28h 35m
Deal found 10/17![Turkish Airlines logo]()
$878
Best flights from Portugal to SeattleDiscover carefully curated flight deals from Portugal to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 21, 2026.
Discover carefully curated flight deals from Portugal to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 11/96:10 am -
1 stop18h 50m
Mon 11/166:45 pm -
1 stop16h 40m
Deal found 10/19![Multiple Airlines logo]()
$678
This Turkish Airlines deal was found by Cheapflights users on 10/16. 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.
Thu 11/54:25 pm -
2 stops38h 55m
Mon 11/97:05 pm -
1 stop30h 50m
Deal found 10/16![Turkish Airlines logo]()
$930
This Ticket 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/55:00 am -
1 stop15h 00m
Wed 11/188:09 am -
1 stop18h 11m
Deal found 10/20![Lufthansa logo]()
$939
This KLM deal was found by Cheapflights users on 10/16. 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.
Mon 11/97:10 pm -
1 stop24h 37m
Mon 11/162:35 pm -
1 stop15h 15m
Deal found 10/16![KLM logo]()
$965
This Delta deal was found by Cheapflights users on 10/19. 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.
Thu 12/35:00 am -
1 stop14h 50m
Thu 12/1011:30 am -
2 stops19h 40m
Deal found 10/19![Delta logo]()
$970
This United Airlines deal was found by Cheapflights users on 10/16. 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.
Sun 11/225:00 am -
1 stop15h 00m
Sat 12/58:09 am -
1 stop18h 11m
Deal found 10/16![United Airlines logo]()
$997
This Cheapflightsfares deal was found by Cheapflights users on 10/19. 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.
Sat 12/1911:15 am -
2 stops20h 27m
Fri 1/16:29 am -
2 stops20h 06m
Deal found 10/19![Aer Lingus logo]()
$1,007
This British Airways deal was found by Cheapflights users on 10/19. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:15 am -
2 stops22h 20m
Mon 11/1612:47 pm -
2 stops45h 08m
Deal found 10/19![British Airways logo]()
$1,083
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.
Thu 11/192:30 pm -
3 stops30h 30m
Wed 11/253:15 pm -
3 stops25h 15m
Deal found 10/20![Multiple Airlines logo]()
$828
This Turkish Airlines deal was found by Cheapflights users on 10/16. 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.
Sun 11/84:25 pm -
2 stops38h 42m
Fri 11/137:05 pm -
1 stop30h 50m
Deal found 10/16![Turkish Airlines logo]()
$930
This Delta deal was found by Cheapflights users on 10/18. 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.
Thu 11/195:00 am -
1 stop14h 47m
Fri 12/48:25 am -
2 stops22h 45m
Deal found 10/18![Delta logo]()
$976
This KLM deal was found by Cheapflights users on 10/17. 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.
Tue 3/22:40 pm -
1 stop28h 55m
Tue 3/163:35 pm -
1 stop15h 15m
Deal found 10/17![KLM logo]()
$976
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Thu 1/145:00 am -
1 stop15h 00m
Sun 1/177:00 am -
1 stop17h 10m
Deal found 10/19![United Airlines logo]()
$998
This Turkish Airlines 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/54:25 pm -
2 stops31h 07m
Mon 11/91:16 pm -
2 stops36h 39m
Deal found 10/20![Multiple Airlines logo]()
$930
This Flysmarter 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/54:10 pm -
2 stops39h 10m
Wed 11/187:05 pm -
1 stop31h 30m
Deal found 10/20![Turkish Airlines logo]()
$936
This oojo deal was found by Cheapflights users on 10/19. 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.
Sat 12/191:25 pm -
2 stops31h 35m
Fri 1/12:50 pm -
1 stop14h 15m
Deal found 10/19![Lufthansa logo]()
$1,061
This Delta deal was found by Cheapflights users on 10/17. 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.
Thu 11/55:00 am -
2 stops21h 35m
Wed 11/1810:39 am -
2 stops20h 31m
Deal found 10/17![Delta logo]()
$976
This Turkish Airlines 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/246:00 am -
1 stop19h 10m
Thu 1/710:52 am -
2 stops44h 18m
Deal found 10/20![Turkish Airlines logo]()
$937
This Turkish Airlines deal was found by Cheapflights users on 10/16. 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.
Sun 11/2211:35 am -
2 stops43h 32m
Sat 12/57:05 pm -
1 stop31h 30m
Deal found 10/16![Turkish Airlines logo]()
$978
This Mytrip deal was found by Cheapflights users on 10/16. 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.
Fri 11/139:20 am -
3 stops37h 52m
Fri 11/207:45 am -
3 stops26h 20m
Deal found 10/16![Multiple Airlines logo]()
$1,279
Last-minute flights from Portugal to SeattleDiscover last-minute flight deals from Portugal to Seattle. Data last updated October 21, 2026 and is based on user searches.
Discover last-minute flight deals from Portugal to Seattle. Data last updated October 21, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/16. 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.
Thu 11/52:30 pm -
3 stops30h 30m
Mon 11/93:15 pm -
3 stops32h 55m
Deal found 10/16![Multiple Airlines logo]()
$813
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.
Thu 11/59:50 am -
2 stops20h 07m
Wed 11/183:15 pm -
2 stops20h 05m
Deal found 10/20![Multiple Airlines logo]()
$855
This Trip.com deal was found by Cheapflights users on 10/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/51:45 pm -
1 stop35h 15m
Wed 11/182:35 pm -
1 stop14h 15m
Deal found 10/17![Icelandair logo]()
$895
This oojo deal was found by Cheapflights users on 10/17. 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.
Sat 11/74:10 pm -
2 stops38h 57m
Thu 11/2610:50 am -
2 stops28h 35m
Deal found 10/17![Turkish Airlines logo]()
$878
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 11/96:10 am -
1 stop18h 50m
Mon 11/166:45 pm -
1 stop16h 40m
Deal found 10/19![Multiple Airlines logo]()
$678
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 11/1712:00 pm -
3 stops33h 00m
Tue 11/243:15 pm -
3 stops32h 55m
Deal found 10/20![Multiple Airlines logo]()
$815
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 11/172:40 pm -
2 stops30h 20m
Tue 11/243:15 pm -
2 stops17h 15m
Deal found 10/20![Multiple Airlines logo]()
$839
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.
Thu 11/192:30 pm -
3 stops30h 30m
Wed 11/253:15 pm -
3 stops25h 15m
Deal found 10/20![Multiple Airlines logo]()
$828
This Mytrip deal was found by Cheapflights users on 10/18. 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.
Thu 11/1911:30 am -
3 stops33h 30m
Fri 12/43:15 pm -
2 stops22h 05m
Deal found 10/18![Multiple Airlines logo]()
$857
This Gotogate deal was found by Cheapflights users on 10/17. 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 11/222:00 pm -
1 stop35h 00m
Sat 12/52:35 pm -
1 stop14h 15m
Deal found 10/17![Icelandair logo]()
$765
This Mytrip deal was found by Cheapflights users on 10/19. 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 11/228:35 am -
2 stops32h 57m
Sat 12/510:10 am -
2 stops25h 10m
Deal found 10/19![Multiple Airlines logo]()
$809
This Turkish Airlines deal was found by Cheapflights users on 10/19. 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.
Sun 11/224:10 pm -
2 stops38h 57m
Sat 12/510:48 am -
2 stops39h 47m
Deal found 10/19![Turkish Airlines logo]()
$898
One-way flights from Portugal to SeattleSearch for one-way flight options from Portugal to Seattle. Find affordable one-way fares based on user searches. Data last updated October 21, 2026.
Search for one-way flight options from Portugal to Seattle. Find affordable one-way fares based on user searches. Data last updated October 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 2/23:25 pm -
2 stops54h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$431
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 2/26:05 am -
2 stops34h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$462
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 11/1610:00 pm -
3 stops44h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$474
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 11/237:55 pm -
2 stops29h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$482
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.
Thu 12/108:30 pm -
2 stops34h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$482
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.
Wed 11/187:35 pm -
3 stops53h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$485
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.
Wed 12/28:20 pm -
3 stops52h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$486
This Kiwi.com deal was found by Cheapflights users on 10/19. 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.
Thu 11/264:20 pm -
2 stops48h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$488
This Kiwi.com deal was found by Cheapflights users on 10/19. 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 11/249:35 am -
3 stops55h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Multiple Airlines logo]()
$490
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.
Tue 11/249:55 pm -
3 stops27h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$511
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.
Wed 11/252:30 pm -
3 stops34h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$533
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 11/2212:40 pm -
3 stops33h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Multiple Airlines logo]()
$556
Find flight deals from Portugal to Seattle
Keep the following information in mind while searching for Portugal to Seattle flight deals. Data was last updated October 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $678 (Kiwi.com) |
One-way from | $431 (Kiwi.com) |
Popular in | October |
Cheapest in | February |
Average price | $1,475 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portugal to Seattle 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 21, 2026.
Use the filters below to find and compare flights from Portugal to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortoSeattle
OPO Porto - SEA Seattle/Tacoma Intl
OPOSEA
Porto
Tue 2/2
6:05 am-8:52 am
2 stops34h 47m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$462
PortoSeattle
OPO Porto - SEA Seattle/Tacoma Intl
OPOSEA
Porto
Tue 11/24
9:55 pm-5:00 pm
3 stops27h 05m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$511
LisbonSeattle
LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl
LISSEA
Lisbon Humberto Delgado
Sat 11/14
10:50 am-12:35 am
2 stops21h 45m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$611
FaroSeattle
FAO Faro - SEA Seattle/Tacoma Intl
FAOSEA
Faro
Sat 11/7
6:25 am-5:00 pm
1 stop18h 35m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$615
FaroSeattle
FAO Faro - SEA Seattle/Tacoma Intl
FAOSEA
Faro
Tue 12/29
11:15 am-11:53 pm
2 stops20h 38m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$622
FaroSeattle
FAO Faro - SEA Seattle/Tacoma Intl
FAOSEA
Faro
Tue 12/29
11:15 am-11:42 pm
2 stops44h 27m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$626
Quickest round-trip
LisbonSeattle
LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl
LISSEA
Lisbon Humberto Delgado
Thu 3/11
5:00 am-11:35 am
1 stop14h 35m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$635
LisbonSeattle
LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl
LISSEA
Lisbon Humberto Delgado
Tue 3/16
5:00 am-12:35 pm
1 stop14h 35m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$635
LisbonSeattle
LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl
LISSEA
Lisbon Humberto Delgado
Mon 3/15
5:00 am-12:35 pm
1 stop14h 35m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$635
LisbonSeattle
LIS Lisbon Humberto Delgado - SEA Seattle/Tacoma Intl
LISSEA
Lisbon Humberto Delgado
Tue 1/5
8:50 pm-12:00 pm
3 stops47h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$647
Showing 1-10 of 47 resultsSorted by cheapest first
Best time to book a flight from Portugal to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Portugal with our price prediction graph.
FAO-SEA
LIS-SEA
OPO-SEA
FNC-SEA
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 Portugal to Seattle
PT0-SEA
FAO-SEA
LIS-SEA
OPO-SEA
FNC-SEA
What is the cheapest month to book a flight from Portugal to Seattle?
Currently, February is the cheapest month in which you can book a flight from Portugal to Seattle (average of $897). Flying from Portugal to Seattle in July is currently the most expensive (average of $1,463). 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.
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated October 21, 2026.
Read reviews from past customers who have flown KLM and Delta from Portugal to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.4
Overall
7.8
Food
7.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Reviews
1 / 20
8.0
ExcellentKushal,Sep 2026
QRO - ATL
Crew
8.4
Overall
7.8
Food
7.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Reviews
1 / 20
8.0
ExcellentKushal,Sep 2026
QRO - ATL
Crew
8.4
Overall
7.8
Food
7.4
Boarding
7.8
Comfort
7.7
Entertainment
7.2
Reviews
1 / 20
8.0
ExcellentKushal,Sep 2026
QRO - ATL
Related info for your journey
Find useful and relevant information for your journey from Portugal to Seattle. 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 Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ocean Shores
Ellensburg
Issaquah
Lakewood
Poulsbo
Marysville
Shoreline
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Alternative routes for Portugal to Seattle
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Portugal and Seattle flights
Browse other Portugal and Seattle flight options. Last updated on October 21, 2026.
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Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 21, 2026.
Portugal to Seattle flights
Consider these flights traveling from Portugal to Seattle.
Top 2 airlines flying from Portugal to Seattle
Discover the top 2 airlines that operate flights from Portugal to Seattle. 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 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$892 | Average$1,141 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$895 | Average$895 | FlexibilityNo cancel fee | On-time75% |