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Cheap flights from Seattle to Dublin from C$ 509

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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Dublin (DUB). 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 28 October 2025.

Round-trip from

C$ 565

One-way from

C$ 509

Popular in

June

Cheapest in

January

Average price

C$ 866
Icelandair
  • Icelandair
  • 24/2-2/3
  • 2 total stops
  • 25h 10m total
  • Seattle to Dublin
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12/12
  • 12/12
  • 3 total stops
  • 45h 10m total
  • Seattle to Dublin
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (C$ 367 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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Find flight deals from Seattle to Dublin

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Dublin
Explore the most affordable flight options available from Seattle to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 October 2025.

Wed 3/122:35 p.m.SEA - DUB
1 stop11h 40mIcelandair
Thu 11/1211:30 a.m.DUB - SEA
1 stop13h 30mIcelandair
Deal found 28/10C$ 566
Wed 3/122:35 p.m.SEA - DUB
1 stop11h 40mIcelandair
Wed 10/1211:30 a.m.DUB - SEA
1 stop13h 30mIcelandair
Deal found 28/10C$ 600
Tue 2/126:00 a.m.SEA - DUB
1 stop17h 45mDelta
Wed 10/1210:45 a.m.DUB - SEA
2 stops31h 34mDelta
Deal found 28/10C$ 613
Sun 9/112:35 p.m.SEA - DUB
1 stop11h 40mIcelandair
Thu 13/1111:30 a.m.DUB - SEA
1 stop13h 30mIcelandair
Deal found 26/10C$ 618
Mon 1/1211:55 p.m.SEA - DUB
1 stop23h 50mDelta
Fri 12/1210:45 a.m.DUB - SEA
2 stops31h 34mDelta
Deal found 28/10C$ 620
Tue 11/119:28 a.m.SEA - DUB
1 stop14h 17mDelta
Wed 19/118:45 a.m.DUB - SEA
2 stops21h 40mDelta
Deal found 27/10C$ 632
Wed 3/122:05 p.m.SEA - DUB
1 stop17h 40mDelta
Fri 12/1210:45 a.m.DUB - SEA
2 stops31h 34mDelta
Deal found 28/10C$ 634
Wed 12/1111:27 a.m.SEA - DUB
1 stop13h 18mKLM
Wed 26/115:55 a.m.DUB - SEA
2 stops18h 27mKLM
Deal found 28/10C$ 635
Mon 3/113:00 p.m.SEA - DUB
1 stop17h 20mDelta
Wed 19/1110:45 a.m.DUB - SEA
2 stops34h 11mDelta
Deal found 26/10C$ 639
Wed 3/122:05 p.m.SEA - DUB
1 stop17h 40mDelta
Mon 8/128:50 a.m.DUB - SEA
1 stop35h 00mDelta
Deal found 28/10C$ 642
Mon 24/116:14 a.m.SEA - DUB
2 stops17h 56mUnited Airlines
Wed 3/129:00 a.m.DUB - SEA
2 stops41h 25mUnited Airlines
Deal found 28/10C$ 643
Tue 11/118:00 a.m.SEA - DUB
2 stops39h 30mMultiple Airlines
Wed 19/119:00 a.m.DUB - SEA
2 stops32h 31mMultiple Airlines
Deal found 27/10C$ 645

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Dublin 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 629,999 searches. Data last updated 28 October 2025.
Use the filters below to find and compare flights from Seattle to Dublin that are best for you.

Fly from

Seattle

Fly to

Dublin

Route

Depart

Return

Price

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 26/2

2:35 p.m.-10:15 a.m.

1 stop11h 40m

Dublin

Sun 1/3

11:30 a.m.-5:00 p.m.

1 stop13h 30m

C$ 565

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 24/2

2:35 p.m.-10:15 a.m.

1 stop11h 40m

Dublin

Mon 2/3

11:30 a.m.-5:00 p.m.

1 stop13h 30m

C$ 565

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Fri 27/3

3:35 p.m.-12:15 p.m.

1 stop13h 40m

Dublin

Tue 31/3

2:15 p.m.-5:50 p.m.

1 stop11h 35m

C$ 571

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 24/3

3:35 p.m.-10:15 a.m.

1 stop11h 40m

Dublin

Wed 1/4

12:15 p.m.-5:50 p.m.

1 stop13h 35m

C$ 571

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 25/2

8:45 a.m.-7:45 a.m.

1 stop15h 00m

Dublin

Fri 6/3

6:00 a.m.-8:31 p.m.

2 stops22h 31m

C$ 632

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 11/11

9:28 a.m.-7:45 a.m.

1 stop14h 17m

Dublin

Wed 19/11

8:45 a.m.-10:25 p.m.

2 stops21h 40m

C$ 632

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 3/3

6:05 a.m.-7:45 a.m.

1 stop17h 40m

Dublin

Tue 10/3

6:00 a.m.-7:25 p.m.

2 stops20h 25m

C$ 632

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 3/12

2:05 p.m.-3:45 p.m.

1 stop17h 40m

Dublin

Tue 9/12

10:45 a.m.-11:58 p.m.

2 stops21h 13m

C$ 634

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 3/3

7:20 a.m.-9:20 a.m.

1 stop18h 00m

Dublin

Tue 17/3

5:55 a.m.-10:25 p.m.

2 stops23h 30m

C$ 638

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 4/3

6:00 a.m.-7:45 a.m.

1 stop17h 45m

Dublin

Fri 13/3

5:55 a.m.-10:25 p.m.

2 stops23h 30m

C$ 638

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/10

Showing 1-10 of 21 results
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Best time to book a flight from Seattle to Dublin

Have a flexible travel schedule? Discover the best time to fly to Dublin from Seattle with our price prediction graph.
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 Dublin

How far ahead should I book a flight from Seattle to Dublin?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Dublin. Price data was last updated on 24 October 2025.

The best time to book flights from Seattle to Dublin is 70 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.

What is the cheapest month to book a flight from Seattle to Dublin?

Currently, November is the cheapest month in which you can book a flight from Seattle to Dublin (average of C$ 446). Flying from Seattle to Dublin in June is currently the most expensive (average of C$ 952). 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 SEA to DUB?

Find hourly flight availability from Seattle to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 October 2025.

A simple way to save on the total cost of your ticket is to fly from Seattle to Dublin in the morning. If you’re flexible enough to do this you can expect to save up to 38% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Seattle to Dublin?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Dublin. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Seattle to Dublin flight should consider departing on Sunday mornings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Seattle to Dublin?

Reviews of airlines servicing Dublin

Get insights into the airlines that provide service to Dublin. 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 Dublin. Reviews last updated 28 October 2025.
Check out reviews from past customers who have flown with Aer Lingus and Icelandair from Seattle to Dublin to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,361 reviews
Check prices

Comfort

7.1

Boarding

7.4

Crew

8.0

Food

6.6

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
6.0
Good

David,Oct 2025

LIS - DUB

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. A little interpersonal communication training could help this man. Other than those two issues, the flight was fine.
Aer Lingus
7.2
Good
1,361 reviews
Aer Lingus
7.2
Good
1,361 reviews
Check prices

Comfort

7.1

Boarding

7.4

Crew

8.0

Food

6.6

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
6.0
Good

David,Oct 2025

LIS - DUB

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. A little interpersonal communication training could help this man. Other than those two issues, the flight was fine.
Icelandair
7.1
Good
562 reviews
Aer Lingus
7.2
Good
1,361 reviews
Check prices

Comfort

7.1

Boarding

7.4

Crew

8.0

Food

6.6

Overall

7.2

Entertainment

6.9

Reviews

1 / 20
6.0
Good

David,Oct 2025

LIS - DUB

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. A little interpersonal communication training could help this man. Other than those two issues, the flight was fine.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Seattle to Dublin?

    If you wish to fly to Dublin from Seattle, then you need to book flights from Seattle/Tacoma Intl to Dublin. There is 1 flight from Seattle/Tacoma Intl (SEA) to Dublin (DUB) per day to choose from. Flights to Dublin from Seattle/Tacoma Intl are available from 2 different airlines, which means you should have some options if you want to compare airfare deals. 9h 05m is how long a nonstop flight from Seattle to Dublin typically takes.

  • How popular is this Seattle to Dublin flight route?

    Within the past month, 26 users have taken a look at flights from Seattle/Tacoma Intl to Dublin.

  • How long is the flight from Seattle to Dublin?

    A quick flight from Seattle to Dublin can take about 11h 40m. Icelandair provides one of the quickest options available for as low as C$ 565. Airlines will cover a distance of 7279 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines flying from Seattle to Dublin round-trip?

    Flying on Icelandair is currently your cheapest option to Dublin, with prices starting at C$ 585. Another option worth looking into is Aer Lingus, starting at C$ 645 round trip. Icelandair is priced at 36% lower than the current average price of a flight leaving 3 months from now.

  • What are the most reliable airlines from Seattle to Dublin?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Dublin on time: American Airlines (70%), Aer Lingus (70%), British Airways (70%).

  • Can I find deals for flights from Seattle to Dublin that include hotel bookings?

    Yes. In addition to deals on Seattle to Dublin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Dublin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Dublin.

  • Can I find deals for business class flights from Seattle to Dublin?

    Yes. Cheapflights offers flight deals from Seattle to Dublin by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Dublin?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Dublin (average of C$ 446). Flying from Seattle to Dublin in June is currently the most expensive (average of C$ 952). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Seattle to Dublin

Discover the top 2 airlines that operate flights from Seattle to Dublin. 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 629,999 searches. Data last updated 28 October 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 585AverageC$ 860FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapestC$ 645AverageC$ 1,000FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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How does Cheapflights help users find flights from Seattle to Dublin?

When you search for this flight from Seattle to Dublin, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Dublin?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Dublin from Seattle.

Can Cheapflights find flights from Seattle to Dublin with no change fees?

Certainly. Search results for flights to Dublin from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seattle to Dublin become cheaper?

Yes, Cheapflights offers price alerts on Seattle to Dublin flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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