$417+ Cheap flights from Ireland 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
Oct 14 — Oct 211
Round-trip
1 adult, Economy
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Find cheap flights from Ireland 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 Ireland to Seattle
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Cheapest flights from Ireland to SeattleExplore the most affordable flight options available from Ireland to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2026.
Explore the most affordable flight options available from Ireland to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2026.
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:30 am -
1 stop13h 30m
Thu 12/32:35 pm -
1 stop11h 40m
Deal found 9/12![Icelandair logo]()
$528
This SmartFares deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2611:30 am -
1 stop13h 30m
Fri 12/42:35 pm -
1 stop11h 40m
Deal found 9/13![Icelandair logo]()
$536
This Justfly.com deal was found by Cheapflights users on 9/13. 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 11/2411:30 am -
1 stop13h 30m
Sun 12/62:35 pm -
1 stop11h 40m
Deal found 9/13![Icelandair logo]()
$551
This Gotogate deal was found by Cheapflights users on 9/13. 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.
Thu 12/1711:30 am -
1 stop13h 30m
Fri 1/152:35 pm -
1 stop11h 40m
Deal found 9/13![Icelandair logo]()
$553
This FlightHub deal was found by Cheapflights users on 9/14. 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.
Thu 12/1711:30 am -
1 stop13h 30m
Sun 1/172:35 pm -
1 stop11h 40m
Deal found 9/14![Icelandair logo]()
$554
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/82:30 pm -
2 stops35h 25m
Thu 10/157:00 pm -
2 stops19h 50m
Deal found 9/9![Multiple Airlines logo]()
$571
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 12/1611:30 am -
1 stop13h 30m
Mon 1/182:35 pm -
1 stop11h 40m
Deal found 9/14![Icelandair logo]()
$573
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 11/2411:30 am -
1 stop13h 30m
Tue 12/82:35 pm -
1 stop11h 40m
Deal found 9/13![Icelandair logo]()
$574
This Icelandair deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2311:30 am -
1 stop13h 30m
Tue 12/82:35 pm -
1 stop11h 40m
Deal found 9/13![Icelandair logo]()
$576
This Booking.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:50 am -
2 stops21h 50m
Tue 10/67:00 pm -
2 stops20h 25m
Deal found 9/13![Multiple Airlines logo]()
$582
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 11/2411:30 am -
1 stop13h 30m
Wed 12/92:35 pm -
1 stop11h 40m
Deal found 9/13![Icelandair logo]()
$597
This Delta deal was found by Cheapflights users on 9/14. 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 10/295:40 am -
2 stops21h 36m
Thu 11/59:42 am -
2 stops21h 03m
Deal found 9/14![Delta logo]()
$649
Best flights from Ireland to SeattleDiscover carefully curated flight deals from Ireland to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 14, 2026.
Discover carefully curated flight deals from Ireland to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 14, 2026.
This KLM deal was found by Cheapflights users on 9/13. 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 9/245:55 am -
1 stop13h 52m
Wed 10/76:40 pm -
1 stop15h 45m
Deal found 9/13![Multiple Airlines logo]()
$630
This Delta deal was found by Cheapflights users on 9/13. 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 10/55:55 am -
1 stop13h 57m
Thu 10/151:30 pm -
1 stop17h 55m
Deal found 9/13![Delta logo]()
$630
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/185:30 pm -
1 stop25h 55m
Sat 1/21:40 pm -
1 stop19h 05m
Deal found 9/10![British Airways logo]()
$698
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:15 am -
2 stops18h 33m
Sat 10/319:35 pm -
2 stops30h 05m
Deal found 9/9![KLM logo]()
$780
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:45 am -
2 stops20h 20m
Tue 11/104:05 pm -
1 stop14h 25m
Deal found 9/11![Delta logo]()
$633
This Delta deal was found by Cheapflights users on 9/13. 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 9/245:55 am -
1 stop13h 52m
Thu 10/86:00 am -
1 stop17h 55m
Deal found 9/13![Delta logo]()
$633
This Mytrip deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/304:50 pm -
2 stops26h 25m
Sun 10/41:30 pm -
2 stops19h 05m
Deal found 9/14![Multiple Airlines logo]()
$708
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 10/15:55 am -
1 stop18h 40m
Thu 10/296:00 am -
2 stops20h 00m
Deal found 9/12![Delta logo]()
$634
This British Airways deal was found by Cheapflights users on 9/13. 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 1/147:50 am -
1 stop17h 00m
Mon 1/1810:25 am -
2 stops25h 00m
Deal found 9/13![British Airways logo]()
$813
This Delta deal was found by Cheapflights users on 9/13. 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 10/25:55 am -
1 stop18h 40m
Tue 10/611:25 am -
2 stops20h 00m
Deal found 9/13![Delta logo]()
$634
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:10 am -
1 stop19h 50m
Sat 10/317:40 pm -
1 stop20h 45m
Deal found 9/9![Multiple Airlines logo]()
$790
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.
Thu 1/144:05 pm -
1 stop32h 45m
Mon 1/186:45 pm -
1 stop18h 15m
Deal found 9/11![British Airways logo]()
$814
This Delta deal was found by Cheapflights users on 9/13. 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 9/265:55 am -
1 stop13h 52m
Sun 10/46:00 am -
2 stops18h 20m
Deal found 9/13![Delta logo]()
$635
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1811:55 am -
2 stops19h 52m
Sat 1/21:40 pm -
1 stop17h 45m
Deal found 9/10![Multiple Airlines logo]()
$798
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.
Sat 9/265:55 am -
2 stops21h 10m
Sat 10/106:40 pm -
1 stop15h 45m
Deal found 9/12![Delta logo]()
$636
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/105:55 am -
1 stop13h 57m
Fri 10/239:36 am -
2 stops16h 49m
Deal found 9/11![Delta logo]()
$636
This Delta deal was found by Cheapflights users on 9/14. 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 10/295:40 am -
2 stops21h 36m
Thu 11/54:05 pm -
1 stop14h 40m
Deal found 9/14![Delta logo]()
$649
Last-minute flights from Ireland to SeattleDiscover last-minute flight deals from Ireland to Seattle. Data last updated September 14, 2026 and is based on user searches.
Discover last-minute flight deals from Ireland to Seattle. Data last updated September 14, 2026 and is based on user searches.
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:55 am -
1 stop18h 40m
Mon 10/56:40 pm -
1 stop20h 00m
Deal found 9/11![Multiple Airlines logo]()
$632
This Expedia deal was found by Cheapflights users on 9/14. 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 9/2411:10 am -
1 stop13h 25m
Wed 10/79:36 am -
2 stops19h 04m
Deal found 9/14![KLM logo]()
$629
This Delta deal was found by Cheapflights users on 9/13. 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 9/2411:10 am -
1 stop13h 25m
Wed 10/76:40 pm -
1 stop15h 45m
Deal found 9/13![Delta logo]()
$630
This Expedia deal was found by Cheapflights users on 9/14. 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.
Tue 9/2911:10 am -
1 stop13h 25m
Tue 10/137:15 am -
2 stops21h 25m
Deal found 9/14![KLM logo]()
$620
This Expedia deal was found by Cheapflights users on 9/13. 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 9/309:15 am -
1 stop16h 33m
Mon 10/59:43 am -
1 stop15h 32m
Deal found 9/13![Air France logo]()
$615
This Expedia deal was found by Cheapflights users on 9/13. 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 9/3011:10 am -
1 stop13h 25m
Wed 10/78:25 am -
1 stop15h 30m
Deal found 9/13![KLM logo]()
$627
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.
Thu 10/111:10 am -
1 stop13h 25m
Thu 10/298:25 am -
2 stops21h 15m
Deal found 9/11![KLM logo]()
$617
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.
Thu 10/15:55 am -
1 stop13h 20m
Thu 10/295:05 pm -
1 stop33h 20m
Deal found 9/11![Air France logo]()
$621
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 10/15:55 am -
1 stop18h 40m
Thu 10/297:22 am -
1 stop17h 23m
Deal found 9/12![Delta logo]()
$633
This Booking.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:50 am -
2 stops21h 50m
Tue 10/67:00 pm -
2 stops20h 25m
Deal found 9/13![Multiple Airlines logo]()
$582
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/82:30 pm -
2 stops35h 25m
Thu 10/157:00 pm -
2 stops19h 50m
Deal found 9/9![Multiple Airlines logo]()
$571
This Delta deal was found by Cheapflights users on 9/14. 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 10/295:40 am -
2 stops21h 36m
Thu 11/59:42 am -
2 stops21h 03m
Deal found 9/14![Delta logo]()
$649
One-way flights from Ireland to SeattleSearch for one-way flight options from Ireland to Seattle. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.
Search for one-way flight options from Ireland to Seattle. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.
This Thrive Travel 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 Thrive Travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/191:05 pm -
1 stop14h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:45 am -
1 stop14h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Delta logo]()
$418
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/105:45 am -
1 stop14h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$419
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.
Sat 11/215:45 am -
1 stop14h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![KLM logo]()
$420
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 11/195:45 am -
2 stops19h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Delta logo]()
$424
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 11/1411:00 am -
1 stop13h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![British Airways logo]()
$428
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:00 pm -
3 stops49h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$432
This Air France 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/211:55 am -
1 stop18h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Air France logo]()
$441
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/29:55 am -
2 stops21h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Delta logo]()
$445
This Thrive Travel deal was found by Cheapflights users on 9/14. 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 Thrive Travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:25 pm -
Nonstop9h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![British Airways logo]()
$458
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:20 am -
3 stops57h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$590
Find flight deals from Ireland to Seattle
Keep the following information in mind while searching for Ireland to Seattle flight deals. Data was last updated September 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $528 (Gotogate) |
One-way from | $417 (Thrive Travel) |
Popular in | July |
Cheapest in | April |
Average price | $805 |
Good one-way deal | $665 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Ireland 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 14, 2026.
Use the filters below to find and compare flights from Ireland to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Sat 11/14
5:45 am-11:47 am
1 stop14h 02m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$419
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Mon 2/15
5:45 am-11:47 am
1 stop14h 02m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$420
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Tue 11/10
8:50 am-11:57 pm
2 stops23h 07m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$425
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Mon 11/2
9:55 am-11:04 pm
2 stops21h 09m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$445
Quickest round-trip
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Fri 9/25
3:25 pm-5:10 pm
Nonstop9h 45m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$459
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Tue 11/10
8:45 pm-1:40 pm
3 stops48h 55m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$462
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Sun 11/1
8:40 pm-4:50 pm
1 stop28h 10m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$497
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Sat 11/14
6:35 pm-10:16 am
3 stops47h 41m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$512
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Sat 10/31
8:50 am-5:50 pm
1 stop16h 00m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$539
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Wed 10/14
10:40 am-10:42 pm
1 stop20h 02m
Seattle/Tacoma Intl
Wed 12/31
12:00 am-9:00 am
Nonstop0h 00m
$557
Showing 1-10 of 28 resultsSorted by cheapest first
Best time to book a flight from Ireland to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Ireland with our price prediction graph.
DUB-SEA
SNN-SEA
ORK-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 Ireland to Seattle
IE0-SEA
DUB-SEA
SNN-SEA
ORK-SEA
What is the cheapest month to book a flight from Ireland to Seattle?
Currently, April is the cheapest month in which you can book a flight from Ireland to Seattle (average of $603). Flying from Ireland to Seattle in July is currently the most expensive (average of $1,041). 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 IE to SEA?
Find hourly flight availability from Ireland 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 14, 2026.
When flying from Ireland 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 Ireland to Seattle
Explore weekly flight availability from Ireland 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 14, 2026.
The most flights from IE0 to SEA are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).
How often are flights from Ireland to Seattle delayed?
About 11% of weekly flights between Ireland and Seattle have experienced delays in the past year, with the average delay time being 168 minutes.
What is the most punctual flight time for Ireland to Seattle flights?
Historically, flights departing in the early afternoon 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?
Tuesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Ireland to Seattle flights?
Over the last year, Aer Lingus have had the lowest number of delays on this route, with just 11% of flights being delayed.
How far ahead should I book a flight from Ireland to Seattle?
The price you pay for your flight from Ireland to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 50 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 14, 2026.
Read through reviews of airlines operating flights from Ireland to Seattle, such as Aer Lingus. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.3
Entertainment
7.0
Food
6.7
Crew
8.1
Comfort
7.2
Boarding
7.5
Reviews
1 / 20
10.0
ExcellentPatrick,Sep 2026
DUB - IAD
Overall
7.3
Entertainment
7.0
Food
6.7
Crew
8.1
Comfort
7.2
Boarding
7.5
Reviews
1 / 20
10.0
ExcellentPatrick,Sep 2026
DUB - IAD
Related info for your journey
Find useful and relevant information for your journey from Ireland 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
Ellensburg
Issaquah
Marysville
Ocean Shores
Lakewood
Fife
Poulsbo
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Ireland to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ireland to Seattle by cabin class
Find flights from Ireland to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ireland and Seattle flights
Browse other Ireland and Seattle flight options. Last updated on September 14, 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 14, 2026.
Ireland to Seattle flights
Consider these flights traveling from Ireland to Seattle.
Top airline flying from Ireland to Seattle
Discover the top airline that operate flights from Ireland 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 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$552 | Average$716 | FlexibilityNo cancel fee | On-timeN/A |