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Cheap flights from Seattle to Dublin from C$ 412

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 17/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 12 December 2025.

Mon 29/1211:59 p.m.SEA - DUB
2 stops23h 31mUnited Airlines
Wed 14/19:30 a.m.DUB - SEA
2 stops33h 59mUnited Airlines
Deal found 10/12C$ 862
Tue 16/126:00 a.m.SEA - DUB
1 stop17h 45mDelta
Tue 13/15:55 a.m.DUB - SEA
1 stop13h 55mDelta
Deal found 10/12C$ 946
Mon 29/128:05 p.m.SEA - DUB
Nonstop9h 05mMultiple Airlines
Wed 14/112:15 p.m.DUB - SEA
1 stop16h 42mMultiple Airlines
Deal found 10/12C$ 947
Wed 10/128:10 a.m.SEA - DUB
1 stop18h 10mUnited Airlines
Wed 15/49:50 a.m.DUB - SEA
2 stops33h 52mUnited Airlines
Deal found 10/12C$ 979
Wed 10/122:05 p.m.SEA - DUB
1 stop17h 40mDelta
Wed 17/128:50 a.m.DUB - SEA
2 stops19h 33mDelta
Deal found 9/12C$ 1,009
Wed 10/1210:40 a.m.SEA - DUB
2 stops15h 15mUnited Airlines
Wed 17/1212:05 p.m.DUB - SEA
2 stops18h 23mUnited Airlines
Deal found 9/12C$ 1,018
Thu 11/1210:40 a.m.SEA - DUB
2 stops15h 15mUnited Airlines
Wed 24/1210:40 a.m.DUB - SEA
2 stops18h 37mUnited Airlines
Deal found 9/12C$ 1,069
Wed 31/128:00 a.m.SEA - DUB
1 stop18h 20mUnited Airlines
Sun 4/110:40 a.m.DUB - SEA
1 stop16h 06mUnited Airlines
Deal found 10/12C$ 1,095

Find 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 12 December 2025.

Round-trip from

C$ 583

One-way from

C$ 412

Popular in

June

Cheapest in

November

Average price

C$ 907

Good round-trip deal

C$ 961 or less

Good one-way deal

C$ 913 or less
Icelandair
  • Icelandair
  • 12/1-11/2
  • 2 total stops
  • 25h 10m total
  • Seattle to Dublin
Search Deals
Scandinavian Airlines
  • Scandinavian Airlines
  • 17/2
  • 2 total stops
  • 23h 03m total
  • Seattle to Dublin
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (C$ 347 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 57 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Dublin.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Dublin.
Search Deals

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 12 December 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

Mon 12/1

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

1 stop11h 40m

Dublin

Wed 11/2

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

1 stop13h 30m

C$ 583

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 13/1

10:58 a.m.-8:10 a.m.

1 stop13h 12m

Dublin

Fri 13/2

9:00 a.m.-7:03 p.m.

2 stops42h 03m

C$ 655

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 12/1

7:00 a.m.-8:10 a.m.

1 stop17h 10m

Dublin

Fri 13/2

9:00 a.m.-7:03 p.m.

2 stops42h 03m

C$ 655

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 21/4

11:44 a.m.-9:45 a.m.

2 stops38h 01m

Dublin

Wed 6/5

9:20 a.m.-9:21 a.m.

1 stop32h 01m

C$ 661

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 11/1

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

1 stop11h 40m

Dublin

Wed 11/2

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

1 stop13h 30m

C$ 663

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 10/1

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

1 stop11h 40m

Dublin

Wed 11/2

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

1 stop13h 30m

C$ 663

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 29/3

8:00 a.m.-8:15 a.m.

1 stop16h 15m

Dublin

Tue 7/4

9:50 a.m.-4:25 p.m.

2 stops38h 35m

C$ 665

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 18/4

11:59 p.m.-7:20 a.m.

2 stops23h 21m

Dublin

Tue 28/4

9:50 a.m.-4:25 p.m.

2 stops38h 35m

C$ 667

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Wed 6/5

1:10 p.m.-10:40 a.m.

1 stop13h 30m

Dublin

Wed 13/5

9:20 a.m.-6:36 p.m.

1 stop17h 16m

C$ 670

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 11/1

12:57 p.m.-8:10 a.m.

2 stops35h 13m

Dublin

Fri 13/2

9:00 a.m.-7:03 p.m.

2 stops42h 03m

C$ 670

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 18 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 5 December 2025.

The best time to book flights from Seattle to Dublin is 26 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$ 425). Flying from Seattle to Dublin in June is currently the most expensive (average of C$ 932). 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 12 December 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.

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 12 December 2025.
Check out reviews from past customers who have flown with Aer Lingus 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
1,392 reviews
Check prices

Boarding

7.4

Food

6.6

Entertainment

6.9

Crew

8.0

Comfort

7.1

Overall

7.2

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
1,392 reviews
Aer Lingus
7.2
Good
1,392 reviews
Check prices

Boarding

7.4

Food

6.6

Entertainment

6.9

Crew

8.0

Comfort

7.1

Overall

7.2

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 1 airline, which means you should have some options if you want to compare airfare deals. 29h 35m 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, 25 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$ 583. Airlines will cover a distance of 7279 km. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from Seattle to Dublin round-trip?

    Flying on Aer Lingus is currently your cheapest option to Dublin, with prices starting at C$ 636. Aer Lingus is priced at 29% 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 (58%), Aer Lingus (58%), British Airways (58%).

  • What are the cheapest flights from Seattle to Dublin?

    Looking at all options, your cheapest flight can be booked for C$ 655. While the most popular route (Seattle/Tacoma Intl - Dublin) can be booked for C$ 1,797 on average, our data indicates C$ 944 when flying from Seattle to Dublin.

  • 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$ 425). Flying from Seattle to Dublin in June is currently the most expensive (average of C$ 932). 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 airline flying from Seattle to Dublin

Discover the top airline 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 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapestC$ 636AverageC$ 1,045FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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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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