$303+ 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 10/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LIS
Jun 10 — Jun 171
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Lisbon with Cheapflights
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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 May 11, 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 May 11, 2026.
This oojo deal was found by Cheapflights users on 5/11. 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.
Fri 10/23:55 pm
SEA
- LIS
1 stop15h 40m
Scandinavian Airlines
Sat 10/104:25 pm
LIS
- SEA
1 stop29h 20m
Scandinavian Airlines
Deal found 5/11![Scandinavian Airlines logo]()
$816
This KAYAK deal was found by Cheapflights users on 5/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:00 pm
SEA
- LIS
2 stops45h 05m
Scandinavian Airlines
Mon 11/94:55 pm
LIS
- SEA
2 stops39h 23m
Scandinavian Airlines
Deal found 5/9![Scandinavian Airlines logo]()
$820
This FlightHub deal was found by Cheapflights users on 5/9. 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 11/33:05 pm
SEA
- LIS
2 stops35h 55m
Lufthansa
Tue 11/105:00 am
LIS
- SEA
1 stop15h 10m
Lufthansa
Deal found 5/9![Lufthansa logo]()
$822
This Air Canada deal was found by Cheapflights users on 5/11. 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 11/13:05 pm
SEA
- LIS
2 stops34h 45m
Air Canada
Thu 11/55:00 am
LIS
- SEA
2 stops24h 56m
Air Canada
Deal found 5/11![Air Canada logo]()
$823
This United Airlines deal was found by Cheapflights users on 5/7. 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 11/36:50 am
SEA
- LIS
1 stop17h 20m
United Airlines
Wed 11/115:00 am
LIS
- SEA
1 stop15h 10m
United Airlines
Deal found 5/7![United Airlines logo]()
$824
This United Airlines deal was found by Cheapflights users on 5/9. 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 10/278:00 am
SEA
- LIS
1 stop19h 15m
United Airlines
Fri 11/65:00 am
LIS
- SEA
1 stop15h 10m
United Airlines
Deal found 5/9![United Airlines logo]()
$825
This Delta deal was found by Cheapflights users on 5/11. 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 11/311:50 am
SEA
- LIS
1 stop13h 10m
Delta
Mon 11/911:25 am
LIS
- SEA
1 stop32h 22m
Delta
Deal found 5/11![Delta logo]()
$826
This Lufthansa deal was found by Cheapflights users on 5/7. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:10 pm
SEA
- LIS
1 stop24h 20m
Lufthansa
Wed 11/115:00 am
LIS
- SEA
1 stop15h 10m
Lufthansa
Deal found 5/7![Lufthansa logo]()
$827
This Air Canada deal was found by Cheapflights users on 5/9. 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.
Wed 10/288:10 am
SEA
- LIS
1 stop19h 50m
Air Canada
Fri 11/65:00 am
LIS
- SEA
2 stops24h 56m
Air Canada
Deal found 5/9![Air Canada logo]()
$828
This United Airlines deal was found by Cheapflights users on 5/9. 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 10/2411:50 pm
SEA
- LIS
2 stops25h 20m
United Airlines
Fri 11/65:00 am
LIS
- SEA
1 stop15h 10m
United Airlines
Deal found 5/9![United Airlines logo]()
$829
This Delta deal was found by Cheapflights users on 5/11. 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 10/319:20 pm
SEA
- LIS
2 stops28h 40m
Delta
Mon 11/911:25 am
LIS
- SEA
1 stop32h 22m
Delta
Deal found 5/11![Delta logo]()
$830
This Gotogate deal was found by Cheapflights users on 5/7. 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 10/1910:30 am
SEA
- LIS
2 stops27h 45m
Multiple Airlines
Fri 10/236:15 am
LIS
- SEA
2 stops24h 27m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$835
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 May 11, 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 May 11, 2026.
This United Airlines deal was found by Cheapflights users on 5/7. 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 11/38:00 am
SEA
- LIS
1 stop18h 15m
United Airlines
Tue 11/105:00 am
LIS
- SEA
1 stop15h 10m
United Airlines
Deal found 5/7![United Airlines logo]()
$824
This Delta deal was found by Cheapflights users on 5/7. 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.
Fri 10/303:00 pm
SEA
- LIS
1 stop17h 10m
Delta
Thu 11/125:30 am
LIS
- SEA
1 stop13h 55m
Delta
Deal found 5/7![Delta logo]()
$883
This British Airways deal was found by Cheapflights users on 5/11. 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.
Tue 6/91:30 pm
SEA
- LIS
1 stop18h 05m
British Airways
Thu 8/67:20 am
LIS
- SEA
1 stop19h 05m
British Airways
Deal found 5/11![British Airways logo]()
$1,306
This Delta deal was found by Cheapflights users on 5/10. 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 10/41:30 pm
SEA
- LIS
1 stop20h 20m
Delta
Wed 10/215:00 am
LIS
- SEA
1 stop19h 39m
Delta
Deal found 5/10![Delta logo]()
$920
This United Airlines deal was found by Cheapflights users on 5/7. 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 7/286:50 pm
SEA
- LIS
1 stop19h 55m
United Airlines
Thu 8/66:15 am
LIS
- SEA
1 stop18h 44m
United Airlines
Deal found 5/7![United Airlines logo]()
$979
This Delta deal was found by Cheapflights users on 5/6. 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 9/53:30 pm
SEA
- LIS
1 stop32h 30m
Delta
Mon 9/1411:55 am
LIS
- SEA
1 stop31h 52m
Delta
Deal found 5/6![Delta logo]()
$960
This United Airlines deal was found by Cheapflights users on 5/7. 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 7/41:00 pm
SEA
- LIS
1 stop13h 35m
United Airlines
Mon 7/137:25 am
LIS
- SEA
1 stop36h 55m
United Airlines
Deal found 5/7![United Airlines logo]()
$1,058
This British Airways deal was found by Cheapflights users on 5/11. 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.
Wed 6/101:30 pm
SEA
- LIS
1 stop25h 45m
British Airways
Wed 8/57:20 am
LIS
- SEA
1 stop19h 05m
British Airways
Deal found 5/11![British Airways logo]()
$1,306
This United Airlines deal was found by Cheapflights users on 5/6. 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 9/38:00 am
SEA
- LIS
1 stop19h 05m
United Airlines
Sun 9/131:00 pm
LIS
- SEA
1 stop16h 04m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,100
This United Airlines deal was found by Cheapflights users on 5/6. 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.
Fri 9/48:00 am
SEA
- LIS
1 stop19h 05m
United Airlines
Sun 9/131:00 pm
LIS
- SEA
1 stop16h 04m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,100
This United Airlines deal was found by Cheapflights users on 5/6. 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 6/37:35 am
SEA
- LIS
1 stop16h 45m
United Airlines
Wed 6/1011:25 am
LIS
- SEA
2 stops34h 51m
United Airlines
Deal found 5/6![United Airlines logo]()
$1,282
This United Airlines deal was found by Cheapflights users on 5/8. 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 6/1611:00 pm
SEA
- LIS
2 stops26h 20m
United Airlines
Sat 7/45:05 am
LIS
- SEA
2 stops21h 27m
United Airlines
Deal found 5/8![United Airlines logo]()
$1,357
Last-minute flights from Seattle to LisbonDiscover last-minute flight deals from Seattle to Lisbon. Data last updated May 11, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Lisbon. Data last updated May 11, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 5/263:55 pm
SEA
- LIS
1 stop15h 40m
Scandinavian Airlines
Fri 5/299:15 pm
LIS
- SEA
1 stop24h 30m
Scandinavian Airlines
Deal found 5/6![Scandinavian Airlines logo]()
$888
This Mytrip deal was found by Cheapflights users on 5/9. 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 6/13:40 pm
SEA
- LIS
3 stops31h 10m
Multiple Airlines
Thu 6/116:10 am
LIS
- SEA
2 stops35h 30m
Multiple Airlines
Deal found 5/9![Multiple Airlines logo]()
$870
This Mytrip deal was found by Cheapflights users on 5/6. 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 6/35:40 pm
SEA
- LIS
3 stops29h 10m
Multiple Airlines
Wed 6/107:10 pm
LIS
- SEA
2 stops28h 50m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$891
This Mytrip deal was found by Cheapflights users on 5/7. 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 6/43:40 pm
SEA
- LIS
3 stops32h 50m
Multiple Airlines
Sun 6/216:10 am
LIS
- SEA
2 stops35h 30m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$830
This Mytrip deal was found by Cheapflights users on 5/10. 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 6/45:45 am
SEA
- LIS
3 stops32h 50m
Multiple Airlines
Sat 6/66:10 am
LIS
- SEA
3 stops35h 30m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$905
This Mytrip deal was found by Cheapflights users on 5/10. 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 6/43:40 pm
SEA
- LIS
3 stops32h 50m
Multiple Airlines
Sun 6/76:10 am
LIS
- SEA
3 stops35h 30m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$911
This Mytrip deal was found by Cheapflights users on 5/11. 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 6/57:35 pm
SEA
- LIS
3 stops18h 10m
WestJet
Sun 6/216:10 am
LIS
- SEA
2 stops35h 30m
WestJet
Deal found 5/11![WestJet logo]()
$881
This Mytrip deal was found by Cheapflights users on 5/10. 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.
Sat 6/610:30 am
SEA
- LIS
3 stops36h 00m
Multiple Airlines
Sun 6/216:10 am
LIS
- SEA
2 stops35h 30m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$875
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 May 11, 2026.
Search for one-way flight options from Seattle to Lisbon. Find affordable one-way fares based on user searches. Data last updated May 11, 2026.
This Mytrip deal was found by Cheapflights users on 5/7. 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.
Sat 10/313:35 pm
SEA
- LIS
3 stops33h 55m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 8/163:40 pm
SEA
- LIS
3 stops45h 30m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 5/8. 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 8/267:00 pm
SEA
- LIS
3 stops43h 05m
Multiple Airlines
Deal found 5/8![Multiple Airlines logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 5/313:40 pm
SEA
- LIS
3 stops44h 30m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 6/111:25 pm
SEA
- LIS
3 stops34h 50m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$371
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 6/27:00 pm
SEA
- LIS
3 stops29h 20m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 10/23:40 pm
SEA
- LIS
3 stops22h 50m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 10/293:35 pm
SEA
- LIS
3 stops23h 35m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$396
This Kiwi.com deal was found by Cheapflights users on 5/11. 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 6/37:00 pm
SEA
- LIS
3 stops31h 15m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$398
This oojo deal was found by Cheapflights users on 5/10. 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.
Tue 9/89:45 pm
SEA
- LIS
1 stop17h 15m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$400
This Air France deal was found by Cheapflights users on 5/7. 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.
Sat 10/313:30 pm
SEA
- LIS
1 stop33h 30m
Air France
Deal found 5/7![Air France logo]()
$401
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 May 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $816 (oojo) |
One-way from | $303 (Mytrip) |
Popular in | June |
Cheapest in | January |
Average price | $1,082 |
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 May 11, 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 - LIS
SEALIS
Seattle/Tacoma Intl
Tue 11/3
8:00 am-10:15 am
1 stop18h 15m
Lisbon Humberto Delgado
Tue 11/10
5:00 am-12:10 pm
1 stop15h 10m
$824
Quickest round-trip
SeattleLisbon
SEA - LIS
SEALIS
Seattle/Tacoma Intl
Fri 10/30
3:00 pm-3:10 pm
1 stop17h 10m
Lisbon Humberto Delgado
Thu 11/12
5:30 am-11:25 am
1 stop13h 55m
$883
SeattleLisbon
SEA - LIS
SEALIS
Seattle/Tacoma Intl
Sun 10/4
1:30 pm-5:50 pm
1 stop20h 20m
Lisbon Humberto Delgado
Wed 10/21
5:00 am-4:39 pm
1 stop19h 39m
$920
SeattleLisbon
SEA - LIS
SEALIS
Seattle/Tacoma Intl
Sat 9/5
3:30 pm-8:00 am
1 stop32h 30m
Lisbon Humberto Delgado
Mon 9/14
11:55 am-11:47 am
1 stop31h 52m
$960
SeattleLisbon
SEA - LIS
SEALIS
Seattle/Tacoma Intl
Tue 7/28
6:50 pm-10:45 pm
1 stop19h 55m
Lisbon Humberto Delgado
Thu 8/6
6:15 am-4:59 pm
1 stop18h 44m
$979
SeattleLisbon
SEA - LIS
SEALIS
Seattle/Tacoma Intl
Sat 7/4
1:00 pm-10:35 am
1 stop13h 35m
Lisbon Humberto Delgado
Mon 7/13
7:25 am-12:20 pm
1 stop36h 55m
$1,058
SeattleLisbon
SEA - LIS
SEALIS
Seattle/Tacoma Intl
Thu 9/3
8:00 am-11:05 am
1 stop19h 05m
Lisbon Humberto Delgado
Sun 9/13
1:00 pm-9:04 pm
1 stop16h 04m
$1,100
SeattleLisbon
SEA - LIS
SEALIS
Seattle/Tacoma Intl
Fri 9/4
8:00 am-11:05 am
1 stop19h 05m
Lisbon Humberto Delgado
Sun 9/13
1:00 pm-9:04 pm
1 stop16h 04m
$1,100
SeattleLisbon
SEA - LIS
SEALIS
Seattle/Tacoma Intl
Wed 6/3
7:35 am-8:20 am
1 stop16h 45m
Lisbon Humberto Delgado
Wed 6/10
11:25 am-2:16 pm
2 stops34h 51m
$1,282
SeattleLisbon
SEA - LIS
SEALIS
Seattle/Tacoma Intl
Tue 6/9
1:30 pm-3:35 pm
1 stop18h 05m
Lisbon Humberto Delgado
Thu 8/6
7:20 am-6:25 pm
1 stop19h 05m
$1,306
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 May.
| 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 $492). Flying from Seattle to Lisbon in June is currently the most expensive (average of $1,221). 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?
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 May 11, 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.
Crew
8.5
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Comfort
7.8
Entertainment
7.8
Food
7.2
Boarding
8.1
Overall
7.9
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
Costa da Caparica
Torres Vedras
Nazaré
Colares
Sesimbra
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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 May 11, 2026.
Seattle and Lisbon flights
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Other flights from Seattle
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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 May 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$348 | Average$442 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$482 | Average$716 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$482 | Average$752 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$494 | Average$878 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$503 | Average$980 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$505 | Average$841 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$543 | Average$1,035 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$545 | Average$961 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$553 | Average$889 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$558 | Average$980 | FlexibilityNo cancel fee | On-time71% |