$407+ Cheap flights from the United Kingdom 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SEA
Oct 12 — Oct 191
Round-trip
1 adult, Economy
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Find cheap flights from United Kingdom 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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Cheapest flights from United Kingdom to SeattleExplore the most affordable flight options available from United Kingdom to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 12, 2026.
Explore the most affordable flight options available from United Kingdom to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 12, 2026.
This Delta deal was found by Cheapflights users on 9/12. 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 9/2410:25 am -
1 stop15h 23m
Sat 10/36:40 pm -
1 stop13h 20m
Deal found 9/12![Delta logo]()
$584
This Air Canada deal was found by Cheapflights users on 9/11. 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.
Tue 9/293:05 pm -
1 stop15h 42m
Wed 10/75:50 am -
2 stops16h 40m
Deal found 9/11![Air Canada logo]()
$585
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:00 am -
2 stops36h 24m
Tue 9/298:30 am -
1 stop19h 55m
Deal found 9/11![United Airlines logo]()
$587
This Justfly.com deal was found by Cheapflights users on 9/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/152:45 pm -
Nonstop10h 05m
Sun 12/206:55 pm -
Nonstop9h 25m
Deal found 9/11![Alaska Airlines logo]()
$591
This Air Canada deal was found by Cheapflights users on 9/12. 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.
Sat 12/121:00 pm -
2 stops33h 37m
Sat 1/308:40 am -
2 stops18h 40m
Deal found 9/12![Air Canada logo]()
$593
This Aunt Betty deal was found by Cheapflights users on 9/11. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:25 am -
1 stop16h 10m
Wed 10/145:45 pm -
1 stop16h 45m
Deal found 9/11![Virgin Atlantic logo]()
$594
This Justfly.com deal was found by Cheapflights users on 9/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:55 am -
1 stop15h 59m
Fri 10/29:50 pm -
Nonstop9h 45m
Deal found 9/10![Virgin Atlantic logo]()
$594
This Air Canada deal was found by Cheapflights users on 9/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/299:30 am -
2 stops17h 22m
Wed 10/75:50 am -
2 stops16h 40m
Deal found 9/10![Multiple Airlines logo]()
$595
This BYOjet deal was found by Cheapflights users on 9/11. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:45 am -
1 stop19h 35m
Mon 10/52:30 pm -
2 stops22h 55m
Deal found 9/11![Virgin Atlantic logo]()
$596
This British Airways deal was found by Cheapflights users on 9/11. 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.
Sat 12/123:40 pm -
2 stops38h 19m
Sat 1/95:00 am -
1 stop23h 15m
Deal found 9/11![British Airways logo]()
$597
This Icelandair deal was found by Cheapflights users on 9/10. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:40 pm -
1 stop13h 00m
Sun 10/253:35 pm -
1 stop15h 05m
Deal found 9/10![Icelandair logo]()
$598
This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/62:45 pm -
Nonstop10h 05m
Tue 1/56:50 pm -
Nonstop9h 30m
Deal found 9/11![Alaska Airlines logo]()
$598
Best flights from United Kingdom to SeattleDiscover carefully curated flight deals from United Kingdom to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.
Discover carefully curated flight deals from United Kingdom to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 12, 2026.
This Delta deal was found by Cheapflights users on 9/12. 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 9/248:25 am -
1 stop16h 10m
Mon 9/285:45 pm -
1 stop14h 55m
Deal found 9/12![Delta logo]()
$603
This Finnair deal was found by Cheapflights users on 9/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:20 am -
1 stop20h 37m
Wed 11/116:45 pm -
Nonstop9h 25m
Deal found 9/10![Finnair logo]()
$646
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/201:35 pm -
2 stops28h 14m
Sun 12/2711:03 pm -
1 stop27h 47m
Deal found 9/10![United Airlines logo]()
$670
This SWISS deal was found by Cheapflights users on 9/7. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:00 am -
2 stops20h 32m
Thu 10/293:35 pm -
2 stops19h 15m
Deal found 9/7![SWISS logo]()
$673
This Icelandair deal was found by Cheapflights users on 9/7. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/142:20 pm -
1 stop11h 35m
Sun 10/257:10 pm -
1 stop31h 45m
Deal found 9/7![Icelandair logo]()
$692
This Virgin Atlantic deal was found by Cheapflights users on 9/7. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:00 pm -
2 stops25h 36m
Thu 10/295:05 pm -
1 stop15h 40m
Deal found 9/7![Virgin Atlantic logo]()
$733
This British Airways deal was found by Cheapflights users on 9/11. 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 10/612:00 pm -
1 stop13h 10m
Wed 10/148:20 pm -
1 stop13h 30m
Deal found 9/11![British Airways logo]()
$747
This KLM deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:15 am -
1 stop15h 20m
Sun 10/116:40 pm -
1 stop18h 15m
Deal found 9/12![Multiple Airlines logo]()
$751
This KLM deal was found by Cheapflights users on 9/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:30 pm -
1 stop23h 17m
Tue 11/102:35 pm -
1 stop17h 30m
Deal found 9/10![KLM logo]()
$756
This Scandinavian Airlines deal was found by Cheapflights users on 9/8. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:05 am -
2 stops24h 15m
Fri 10/23:55 pm -
2 stops18h 35m
Deal found 9/8![Scandinavian Airlines logo]()
$965
This Turkish Airlines deal was found by Cheapflights users on 9/8. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/95:20 pm -
2 stops37h 19m
Tue 2/2311:00 am -
2 stops38h 55m
Deal found 9/8![Turkish Airlines logo]()
$979
This Delta deal was found by Cheapflights users on 9/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/226:20 am -
1 stop15h 30m
Wed 1/66:00 am -
2 stops20h 30m
Deal found 9/8![Delta logo]()
$664
This Condor deal was found by Cheapflights users on 9/11. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2910:20 am -
2 stops56h 14m
Thu 10/16:05 pm -
1 stop16h 45m
Deal found 9/11![Condor logo]()
$1,344
This Icelandair deal was found by Cheapflights users on 9/7. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:20 pm -
1 stop14h 20m
Sun 10/257:10 pm -
1 stop31h 45m
Deal found 9/7![Icelandair logo]()
$692
This SWISS deal was found by Cheapflights users on 9/7. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/179:15 am -
2 stops21h 17m
Thu 1/141:16 pm -
2 stops19h 49m
Deal found 9/7![SWISS logo]()
$699
This Delta deal was found by Cheapflights users on 9/10. 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.
Mon 12/2110:00 am -
1 stop13h 13m
Sat 1/94:05 pm -
1 stop15h 40m
Deal found 9/10![Delta logo]()
$678
This KLM deal was found by Cheapflights users on 9/7. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:45 am -
1 stop14h 07m
Fri 10/236:40 pm -
1 stop18h 15m
Deal found 9/7![Multiple Airlines logo]()
$751
This United Airlines deal was found by Cheapflights users on 9/12. 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 12/197:40 am -
2 stops23h 36m
Tue 1/58:00 am -
2 stops17h 10m
Deal found 9/12![United Airlines logo]()
$751
This British Airways deal was found by Cheapflights users on 9/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/18:35 am -
1 stop16h 35m
Sat 10/108:20 pm -
1 stop13h 00m
Deal found 9/9![British Airways logo]()
$756
This KLM deal was found by Cheapflights users on 9/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:30 pm -
1 stop23h 17m
Tue 11/172:35 pm -
1 stop17h 30m
Deal found 9/9![KLM logo]()
$756
This Virgin Atlantic deal was found by Cheapflights users on 9/8. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/159:20 am -
2 stops19h 07m
Sun 10/253:25 pm -
1 stop18h 10m
Deal found 9/8![Virgin Atlantic logo]()
$757
This Icelandair deal was found by Cheapflights users on 9/10. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2211:55 am -
1 stop13h 05m
Sun 1/102:35 pm -
1 stop12h 20m
Deal found 9/10![Icelandair logo]()
$716
This United Airlines deal was found by Cheapflights users on 9/12. 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 12/197:40 am -
2 stops23h 36m
Thu 12/311:12 pm -
1 stop13h 38m
Deal found 9/12![United Airlines logo]()
$751
This British Airways deal was found by Cheapflights users on 9/11. 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 10/276:15 am -
1 stop13h 10m
Tue 11/39:15 am -
2 stops17h 35m
Deal found 9/11![British Airways logo]()
$757
This Mytrip deal was found by Cheapflights users on 9/10. 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 11/217:35 am -
2 stops17h 25m
Sun 11/292:35 pm -
2 stops16h 35m
Deal found 9/10![Multiple Airlines logo]()
$766
This SWISS deal was found by Cheapflights users on 9/11. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/249:25 am -
2 stops17h 07m
Tue 9/297:00 am -
2 stops17h 25m
Deal found 9/11![SWISS logo]()
$767
This Expedia deal was found by Cheapflights users on 9/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:50 am -
1 stop14h 45m
Wed 10/710:59 pm -
2 stops26h 21m
Deal found 9/10![KLM logo]()
$779
This Delta deal was found by Cheapflights users on 9/10. 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.
Wed 11/185:50 am -
1 stop13h 57m
Wed 12/22:35 pm -
1 stop14h 10m
Deal found 9/10![Delta logo]()
$716
This Icelandair deal was found by Cheapflights users on 9/11. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/1411:55 am -
1 stop13h 05m
Mon 1/182:35 pm -
1 stop12h 10m
Deal found 9/11![Icelandair logo]()
$732
This United Airlines deal was found by Cheapflights users on 9/12. 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 12/208:00 am -
2 stops23h 16m
Sun 1/35:00 am -
1 stop20h 40m
Deal found 9/12![United Airlines logo]()
$751
Last-minute flights from United Kingdom to SeattleDiscover last-minute flight deals from United Kingdom to Seattle. Data last updated September 12, 2026 and is based on user searches.
Discover last-minute flight deals from United Kingdom to Seattle. Data last updated September 12, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 9/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:30 am -
2 stops18h 44m
Sat 10/35:50 am -
2 stops16h 40m
Deal found 9/10![Multiple Airlines logo]()
$599
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1811:25 am -
2 stops20h 01m
Sat 10/38:30 am -
1 stop19h 55m
Deal found 9/11![United Airlines logo]()
$597
This Justfly.com deal was found by Cheapflights users on 9/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:55 am -
1 stop15h 59m
Fri 10/29:50 pm -
Nonstop9h 45m
Deal found 9/10![Virgin Atlantic logo]()
$594
This BYOjet deal was found by Cheapflights users on 9/11. 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 BYOjet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:45 am -
1 stop19h 35m
Mon 10/52:30 pm -
2 stops22h 55m
Deal found 9/11![Virgin Atlantic logo]()
$596
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:00 am -
2 stops36h 24m
Tue 9/298:30 am -
1 stop19h 55m
Deal found 9/11![United Airlines logo]()
$587
This Delta deal was found by Cheapflights users on 9/12. 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 9/2410:25 am -
1 stop15h 23m
Sun 10/41:30 pm -
1 stop11h 55m
Deal found 9/12![Delta logo]()
$584
This Air Canada deal was found by Cheapflights users on 9/11. 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.
Tue 9/293:05 pm -
1 stop15h 42m
Wed 10/75:50 am -
2 stops16h 40m
Deal found 9/11![Air Canada logo]()
$585
This Air Canada deal was found by Cheapflights users on 9/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/299:30 am -
2 stops17h 22m
Wed 10/75:50 am -
2 stops16h 40m
Deal found 9/10![Multiple Airlines logo]()
$595
This Aunt Betty deal was found by Cheapflights users on 9/11. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:25 am -
1 stop16h 10m
Wed 10/145:45 pm -
1 stop16h 45m
Deal found 9/11![Virgin Atlantic logo]()
$594
This Icelandair deal was found by Cheapflights users on 9/10. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:40 pm -
1 stop13h 00m
Sun 10/253:35 pm -
1 stop15h 05m
Deal found 9/10![Icelandair logo]()
$598
This Expedia deal was found by Cheapflights users on 9/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:20 am -
1 stop15h 15m
Wed 10/149:36 am -
2 stops15h 14m
Deal found 9/11![KLM logo]()
$599
This TravelUp deal was found by Cheapflights users on 9/10. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/223:40 pm -
1 stop13h 00m
Thu 10/293:35 pm -
1 stop12h 20m
Deal found 9/10![Icelandair logo]()
$599
One-way flights from United Kingdom to SeattleSearch for one-way flight options from United Kingdom to Seattle. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
Search for one-way flight options from United Kingdom to Seattle. Find affordable one-way fares based on user searches. Data last updated September 12, 2026.
This deal was found by Cheapflights users on 9/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2611:20 am -
1 stop13h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Icelandair logo]()
$407
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 11/227:55 pm -
2 stops49h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$429
This deal was found by Cheapflights users on 9/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/2411:20 am -
1 stop13h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Icelandair logo]()
$435
This deal was found by Cheapflights users on 9/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2111:20 am -
1 stop13h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Icelandair logo]()
$436
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 11/175:55 pm -
3 stops49h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$444
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/88:40 pm -
2 stops49h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$451
This Kiwi.com deal was found by Cheapflights users on 9/8. 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.
Sat 11/216:25 pm -
2 stops51h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$454
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 11/1512:35 pm -
3 stops55h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$455
This deal was found by Cheapflights users on 9/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/129:25 am -
1 stop15h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![British Airways logo]()
$457
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/105:40 pm -
3 stops52h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$460
This deal was found by Cheapflights users on 9/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/228:25 am -
1 stop16h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![British Airways logo]()
$464
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 11/210:55 am -
3 stops58h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$470
Find flight deals from United Kingdom to Seattle
Keep the following information in mind while searching for United Kingdom to Seattle flight deals. Data was last updated September 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $584 (Delta) |
One-way from | $407 |
Popular in | August |
Cheapest in | February |
Average price | $739 |
Good round-trip deal | $626 or less |
Good one-way deal | $528 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from United Kingdom 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 September 12, 2026.
Use the filters below to find and compare flights from the United Kingdom to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ManchesterSeattle
MAN Manchester - SEA Seattle/Tacoma Intl
MANSEA
Manchester
Tue 11/17
5:55 pm-11:47 am
3 stops49h 52m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$444
ManchesterSeattle
MAN Manchester - SEA Seattle/Tacoma Intl
MANSEA
Manchester
Sun 11/22
7:40 pm-1:40 pm
2 stops50h 00m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$455
GlasgowSeattle
GLA Glasgow Intl - SEA Seattle/Tacoma Intl
GLASEA
Glasgow Intl
Tue 11/10
2:15 pm-1:40 pm
2 stops55h 25m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$480
GlasgowSeattle
GLA Glasgow Intl - SEA Seattle/Tacoma Intl
GLASEA
Glasgow Intl
Tue 11/3
8:25 am-5:00 pm
2 stops40h 35m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$486
ManchesterSeattle
MAN Manchester - SEA Seattle/Tacoma Intl
MANSEA
Manchester
Sun 11/15
1:45 pm-3:14 pm
2 stops33h 29m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$491
LondonSeattle
LHR London Heathrow - SEA Seattle/Tacoma Intl
LHRSEA
London Heathrow
Sun 12/27
6:30 am-8:50 pm
2 stops22h 20m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$512
LondonSeattle
LHR London Heathrow - SEA Seattle/Tacoma Intl
LHRSEA
London Heathrow
Sun 12/6
6:30 am-10:04 pm
2 stops23h 34m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$512
LondonSeattle
LGW London Gatwick - SEA Seattle/Tacoma Intl
LGWSEA
London Gatwick
Tue 11/3
10:00 am-11:04 pm
2 stops21h 04m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$518
LondonSeattle
LGW London Gatwick - SEA Seattle/Tacoma Intl
LGWSEA
London Gatwick
Mon 11/9
10:00 am-11:00 pm
2 stops21h 00m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$518
LondonSeattle
LGW London Gatwick - SEA Seattle/Tacoma Intl
LGWSEA
London Gatwick
Tue 12/15
10:00 am-8:42 pm
2 stops18h 42m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$518
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from United Kingdom to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from United Kingdom with our price prediction graph.
LCY-SEA
LHR-SEA
GLA-SEA
LGW-SEA
EDI-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 the United Kingdom to Seattle
GB0-SEA
LCY-SEA
LHR-SEA
GLA-SEA
LGW-SEA
What is the cheapest month to book a flight from United Kingdom to Seattle?
Currently, February is the cheapest month in which you can book a flight from United Kingdom to Seattle (average of $670). Flying from United Kingdom to Seattle in July is currently the most expensive (average of $879). 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.
What is the cheapest time of day to fly from GB to SEA?
Find hourly flight availability from United Kingdom to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 12, 2026.
When flying from United Kingdom to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from United Kingdom to Seattle
Explore weekly flight availability from United Kingdom to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 12, 2026.
The most flights from GB0 to SEA are scheduled on a Tuesday (24 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (18 on average).
How often are flights from the United Kingdom to Seattle delayed?
About 11% of weekly flights between United Kingdom and Seattle have experienced delays in the past year, with the average delay time being 130 minutes.
What is the most punctual flight time for the United Kingdom to Seattle flights?
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Sunday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on the United Kingdom to Seattle flights?
Over the last year, Delta have had the lowest number of delays on this route, with just 5% of flights being delayed.
How far ahead should I book a flight from United Kingdom to Seattle?
Booking 83 days in advance of your planned departure date is, on average, the best time to get cheap flights from United Kingdom to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 September 12, 2026.
See what other customers who have flown with Alaska Airlines,Delta, andVirgin Atlantic from the United Kingdom to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Comfort
7.8
Overall
7.9
Food
7.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Entertainment
7.0
Comfort
7.8
Overall
7.9
Food
7.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Entertainment
7.0
Comfort
7.8
Overall
7.9
Food
7.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Entertainment
7.0
Comfort
7.8
Overall
7.9
Food
7.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Entertainment
7.0
Comfort
7.8
Overall
7.9
Food
7.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Entertainment
7.0
Comfort
7.8
Overall
7.9
Food
7.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Jun 2026
LHR - SEA
Related info for your journey
Find useful and relevant information for your journey from United Kingdom 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
Edmonds
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
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Alternative routes for United Kingdom to Seattle
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Complete your trip
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Search flights from United Kingdom to Seattle by cabin class
Find flights from United Kingdom to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
United Kingdom and Seattle flights
Browse other United Kingdom and Seattle flight options. Last updated on September 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 September 12, 2026.
United Kingdom to Seattle flights
Consider these flights traveling from United Kingdom to Seattle.
Top 9 airlines flying from United Kingdom to Seattle
Discover the top 9 airlines that operate flights from United Kingdom 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 September 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$393 | Average$856 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$485 | Average$796 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$534 | Average$810 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$584 | Average$1,009 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$618 | Average$1,036 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$665 | Average$908 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$714 | Average$974 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$759 | Average$865 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$780 | Average$780 | FlexibilityNo cancel fee | On-time77% |