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Cheap flights from Ireland to Seattle from £315
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
9 Nov — 16 Nov1
Cheap flight deals from Ireland to Seattle
Enter your travel dates to find the best prices.
Cheapest
Best
Direct
Last-minute
One-way
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 10 October 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 10 October 2026.
Tue 24/1111:30 -
1 stop13h 30m
Fri 27/1114:35 -
1 stop11h 40m
Deal found 6/10£432
Tue 24/1111:30 -
1 stop13h 30m
Tue 1/1214:35 -
1 stop11h 40m
Deal found 10/10£450
Tue 24/1115:30 -
2 stops33h 30m
Tue 1/1214:35 -
2 stops23h 30m
Deal found 10/10£459
Sat 21/1106:55 -
2 stops18h 05m
Sat 28/1114:35 -
3 stops33h 30m
Deal found 7/10£487
Sat 7/1105:10 -
1 stop14h 50m
Sat 14/1113:50 -
1 stop18h 40m
Deal found 10/10£497
Sun 8/1105:45 -
1 stop14h 02m
Sun 15/1115:25 -
1 stop15h 00m
Deal found 10/10£499
Fri 6/1105:45 -
1 stop14h 02m
Sun 22/1115:25 -
1 stop15h 00m
Deal found 7/10£501
Thu 5/1105:45 -
1 stop14h 02m
Thu 12/1108:30 -
2 stops22h 00m
Deal found 8/10£502
Thu 26/1105:45 -
1 stop14h 02m
Sun 29/1107:15 -
2 stops21h 25m
Deal found 8/10£502
Thu 19/1105:45 -
1 stop14h 02m
Thu 26/1107:38 -
1 stop18h 07m
Deal found 5/10£503
Tue 24/1108:50 -
2 stops23h 07m
Tue 1/1216:05 -
1 stop14h 25m
Deal found 10/10£504
Thu 19/1105:45 -
1 stop14h 02m
Sun 29/1107:15 -
2 stops21h 25m
Deal found 7/10£505
Best flights from Ireland to SeattleDiscover carefully curated flight deals from Ireland to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2026.
Discover carefully curated flight deals from Ireland to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 10 October 2026.
Thu 14/111:30 -
1 stop13h 30m
Mon 18/114:35 -
1 stop11h 40m
Deal found 9/10£484
Sun 8/1105:45 -
1 stop14h 02m
Sun 15/1115:25 -
1 stop15h 00m
Deal found 10/10£499
Tue 24/1105:45 -
1 stop14h 02m
Tue 1/1216:05 -
1 stop14h 25m
Deal found 9/10£499
Wed 27/105:45 -
1 stop14h 04m
Wed 3/208:25 -
2 stops22h 05m
Deal found 8/10£502
Fri 20/1105:45 -
2 stops17h 40m
Fri 27/1115:25 -
1 stop14h 45m
Deal found 6/10£504
Thu 12/1105:45 -
1 stop14h 02m
Thu 26/1109:25 -
2 stops21h 05m
Deal found 6/10£502
Sat 7/1105:45 -
1 stop14h 02m
Sat 14/1106:00 -
2 stops19h 00m
Deal found 10/10£502
Thu 26/1105:45 -
1 stop14h 02m
Wed 2/1207:30 -
2 stops21h 10m
Deal found 5/10£502
Tue 24/1108:50 -
2 stops23h 07m
Tue 1/1216:05 -
1 stop14h 25m
Deal found 10/10£504
Tue 10/1105:45 -
1 stop14h 02m
Tue 17/1109:45 -
2 stops20h 45m
Deal found 7/10£504
Direct flights from Ireland to SeattleExplore direct flight options from Ireland to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 October 2026.
Explore direct flight options from Ireland to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 October 2026.
Wed 14/1015:25 -
Nonstop9h 45m
Wed 21/1019:10 -
Nonstop9h 10m
Deal found 7/10£638
Sun 18/1015:25 -
Nonstop9h 45m
Fri 23/1019:10 -
Nonstop9h 05m
Deal found 7/10£1,108
Last-minute flights from Ireland to SeattleDiscover last-minute flight deals from Ireland to Seattle. Data last updated 10 October 2026 and is based on user searches.
Discover last-minute flight deals from Ireland to Seattle. Data last updated 10 October 2026 and is based on user searches.
Thu 5/1105:45 -
1 stop14h 02m
Thu 12/1108:30 -
2 stops22h 00m
Deal found 8/10£502
Fri 6/1105:45 -
1 stop14h 02m
Sun 22/1115:25 -
1 stop15h 00m
Deal found 7/10£501
Sat 7/1105:10 -
1 stop14h 50m
Sat 14/1113:50 -
1 stop18h 40m
Deal found 10/10£497
Sun 8/1105:45 -
1 stop14h 02m
Sun 15/1115:25 -
1 stop15h 00m
Deal found 10/10£499
Thu 19/1105:45 -
1 stop14h 02m
Thu 26/1107:38 -
1 stop18h 07m
Deal found 5/10£503
Thu 19/1105:45 -
1 stop14h 02m
Sun 29/1107:15 -
2 stops21h 25m
Deal found 7/10£505
Sat 21/1106:55 -
2 stops18h 05m
Sat 28/1114:35 -
3 stops33h 30m
Deal found 7/10£487
Tue 24/1111:30 -
1 stop13h 30m
Fri 27/1114:35 -
1 stop11h 40m
Deal found 6/10£432
Tue 24/1111:30 -
1 stop13h 30m
Tue 1/1214:35 -
1 stop11h 40m
Deal found 10/10£450
Tue 24/1115:30 -
2 stops33h 30m
Tue 1/1214:35 -
2 stops23h 30m
Deal found 10/10£459
Tue 24/1108:50 -
2 stops23h 07m
Tue 1/1216:05 -
1 stop14h 25m
Deal found 10/10£504
Thu 26/1105:45 -
1 stop14h 02m
Sun 29/1107:15 -
2 stops21h 25m
Deal found 8/10£502
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 10 October 2026.
Search for one-way flight options from Ireland to Seattle. Find affordable one-way fares based on user searches. Data last updated 10 October 2026.
Tue 1/1213:25 -
1 stop30h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/10£315
Tue 8/1205:45 -
1 stop14h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/10£317
Wed 2/1205:45 -
2 stops17h 44m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 9/10£320
Mon 14/1205:45 -
2 stops17h 44m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/10£321
Fri 22/105:45 -
2 stops17h 02m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/10£323
Thu 26/1105:45 -
2 stops22h 53m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/10£326
Sat 12/1208:50 -
2 stops19h 52m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 5/10£326
Wed 25/1116:10 -
3 stops36h 28m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/10£331
Wed 25/1109:40 -
1 stop22h 17m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/10£337
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 10 October 2026.
Cheapflights Fare Finder
Customise 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 10 October 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 return flight
Fastest return journey
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Thu 21/1
05:45-11:49
1 stop14h 04m
Seattle/Tacoma Intl
Wed 31/12
00:00-09:00
Nonstop0h 00m
£315
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Tue 1/12
13:25-11:50
1 stop30h 25m
Seattle/Tacoma Intl
Wed 31/12
00:00-09:00
Nonstop0h 00m
£317
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Wed 9/12
05:45-11:50
1 stop14h 05m
Seattle/Tacoma Intl
Wed 31/12
00:00-09:00
Nonstop0h 00m
£317
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Thu 10/12
05:45-11:50
1 stop14h 05m
Seattle/Tacoma Intl
Wed 31/12
00:00-09:00
Nonstop0h 00m
£317
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Thu 3/12
05:45-17:10
2 stops19h 25m
Seattle/Tacoma Intl
Wed 31/12
00:00-09:00
Nonstop0h 00m
£320
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Wed 2/12
05:45-20:49
2 stops23h 04m
Seattle/Tacoma Intl
Wed 31/12
00:00-09:00
Nonstop0h 00m
£320
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Tue 8/12
05:45-20:49
2 stops23h 04m
Seattle/Tacoma Intl
Wed 31/12
00:00-09:00
Nonstop0h 00m
£320
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Fri 4/12
08:50-20:49
2 stops19h 59m
Seattle/Tacoma Intl
Wed 31/12
00:00-09:00
Nonstop0h 00m
£320
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Sun 13/12
05:45-19:12
2 stops21h 27m
Seattle/Tacoma Intl
Wed 31/12
00:00-09:00
Nonstop0h 00m
£321
DublinSeattle
DUB Dublin - SEA Seattle/Tacoma Intl
DUBSEA
Dublin
Mon 14/12
05:45-15:29
2 stops17h 44m
Seattle/Tacoma Intl
Wed 31/12
00:00-09:00
Nonstop0h 00m
£321
Showing 1-10 of 21 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
Estimated return 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
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 £441). Flying from Ireland to Seattle in July is currently the most expensive (average of £786). 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 10 October 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 10 October 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 12% of weekly flights between Ireland and Seattle have experienced delays in the past year, with the average delay time being 163 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 past year, Aer Lingus have had the lowest number of delays on this route, with just 12% of flights being delayed.
How far ahead should I book a flight from Ireland to Seattle?
The best time to book flights from Ireland to Seattle is 49 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 10 October 2026.
Check out reviews from past customers who have flown with Aer Lingus and Icelandair from Ireland to Seattle to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.1
Overall
7.3
Entertainment
7.0
Boarding
7.5
Food
6.7
Comfort
7.2
Reviews
1 / 20
10.0
ExcellentKarin,Oct 2026
DUB - MCO
Crew
8.1
Overall
7.3
Entertainment
7.0
Boarding
7.5
Food
6.7
Comfort
7.2
Reviews
1 / 20
10.0
ExcellentKarin,Oct 2026
DUB - MCO
Crew
8.1
Overall
7.3
Entertainment
7.0
Boarding
7.5
Food
6.7
Comfort
7.2
Reviews
1 / 20
10.0
ExcellentKarin,Oct 2026
DUB - MCO
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.
Travelling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsFederal Way
SeaTac
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Alternative routes for Ireland to Seattle
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Complete your trip
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Direct flights to Washington
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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 10 October 2026.
Popular flight searches
Check out other popular destinations found by fellow travellers 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 10 October 2026.
Top 2 airlines flying from Ireland to Seattle
Discover the top 2 airlines 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 10 October 2026.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Ireland to Seattle?
Cheapflights helps you search for flights from Ireland to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from Ireland to Seattle?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ireland to Seattle.
Can Cheapflights find flights from Ireland to Seattle with no change fees?
Yes, we can. To see specific flights from Ireland to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Ireland to Seattle become cheaper?
Of course! You can now track prices for flights from Ireland to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.