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Cheap flights from Seattle to Dublin from C$ 497

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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — DUB
3 Aug — 10 Aug1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Dublin are usually found in January or November, booked 70 days in advance, depart on a Sunday or Tuesday and return on a Monday

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 29 July 2025.

Round-trip from

C$ 505

One-way from

C$ 497

Popular in

June

Cheapest in

January

Average price

C$ 1,136

Good round-trip deal

C$ 1,079 or less
United Airlines
  • United Airlines
  • 27/10-4/11
  • 3 total stops
  • 35h 32m total
  • Seattle to Dublin
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American Airlines
  • American Airlines
  • 2/9
  • 1 total stop
  • 13h 45m total
  • Seattle to Dublin
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (C$ 369 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 56 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Dublin.
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Find flight deals from Seattle to Dublin

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 29 July 2025.

Sun 23/116:05 a.m.SEA - DUB
2 stops18h 40mDelta
Fri 5/1210:45 a.m.DUB - SEA
2 stops21h 29mDelta
Deal found 28/7C$ 505
Sat 25/1011:40 p.m.SEA - DUB
1 stop25h 30mUnited Airlines
Tue 4/119:30 a.m.DUB - SEA
2 stops20h 03mUnited Airlines
Deal found 28/7C$ 513
Sat 25/103:50 p.m.SEA - DUB
1 stop11h 15mIcelandair
Sat 8/1111:30 a.m.DUB - SEA
1 stop13h 30mIcelandair
Deal found 29/7C$ 523
Wed 26/113:10 p.m.SEA - DUB
1 stop18h 00mLufthansa
Tue 9/1210:50 a.m.DUB - SEA
1 stop34h 30mLufthansa
Deal found 28/7C$ 539
Tue 12/81:55 p.m.SEA - DUB
1 stop14h 40mMultiple Airlines
Thu 21/83:00 p.m.DUB - SEA
1 stop15h 25mMultiple Airlines
Deal found 27/7C$ 542
Sun 19/108:20 p.m.SEA - DUB
1 stop13h 40mBritish Airways
Tue 4/1110:55 a.m.DUB - SEA
1 stop14h 00mBritish Airways
Deal found 27/7C$ 543
Thu 7/81:32 p.m.SEA - DUB
1 stop14h 08mFinnair
Thu 21/89:45 a.m.DUB - SEA
1 stop14h 15mFinnair
Deal found 28/7C$ 554

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 29 July 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 27/10

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

1 stop18h 10m

Dublin

Tue 4/11

9:30 a.m.-6:52 p.m.

2 stops17h 22m

C$ 505

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 18/10

11:55 p.m.-9:15 a.m.

2 stops25h 20m

Dublin

Tue 4/11

1:25 p.m.-11:50 a.m.

1 stop30h 25m

C$ 519

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sat 25/10

3:50 p.m.-11:05 a.m.

1 stop11h 15m

Dublin

Sat 8/11

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

1 stop13h 30m

C$ 523

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 12/8

1:55 p.m.-12:35 p.m.

1 stop14h 40m

Dublin

Thu 21/8

3:00 p.m.-10:25 p.m.

1 stop15h 25m

C$ 542

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Sun 19/10

8:20 p.m.-6:00 p.m.

1 stop13h 40m

Dublin

Tue 4/11

10:55 a.m.-4:55 p.m.

1 stop14h 00m

C$ 543

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Thu 7/8

1:32 p.m.-11:40 a.m.

1 stop14h 08m

Dublin

Thu 21/8

9:45 a.m.-4:00 p.m.

1 stop14h 15m

C$ 554

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 20/10

2:55 p.m.-7:45 a.m.

1 stop32h 50m

Dublin

Fri 7/11

5:10 a.m.-12:10 p.m.

1 stop15h 00m

C$ 562

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 2/9

1:30 p.m.-11:15 a.m.

1 stop13h 45m

C$ 497

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Tue 2/9

11:54 p.m.-7:10 a.m.

2 stops23h 16m

C$ 499

SeattleDublin

SEA - DUB

SEADUB

Seattle/Tacoma Intl

Mon 18/8

1:30 p.m.-7:35 p.m.

1 stop22h 05m

C$ 501

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/7

Showing 1-10 of 17 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 25 July 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, January is the cheapest month in which you can book a flight from Seattle to Dublin (average of C$ 458). Flying from Seattle to Dublin in December is currently the most expensive (average of C$ 760). 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 29 July 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 34% 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 Tuesday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What’s the top layover airport for flights from Seattle to Dublin?

Share of one-stop round-trip flights from Seattle to Dublin chosen by Cheapflights users in the past 12 months, using the same layover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 83% of one-stop itineraries from Seattle to Dublin on Cheapflights.

What’s the cheapest layover airport for flights from Seattle to Dublin?

Average round-trip fare for 1-stop flights from Seattle to Dublin, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Reykjavik (KEF) is the most affordable 1-stop option, with an average round-trip price of C$ 948.

What’s the fastest layover option from Seattle to Dublin?

Shortest average travel time for 1-stop one-way flights from Seattle to Dublin, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via London (LHR) have the shortest average one-way travel time for 1-stop routes: 2h 55m.

Which airport typically offers the quickest layover for flights from Seattle to Dublin?

Average layover duration for 1-stop one-way flights from Seattle to Dublin, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via London (LHR) offer the fastest connection on this route, with an average layover time of 1h 50m.

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 29 July 2025.
Check out reviews from past customers who have flown with Alaska Airlines,Delta, andFinnair 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.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,979 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Finnair
7.6
Good
1,316 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
SWISS
7.5
Good
1,683 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Comfort

7.8

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

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

    Flying on United Airlines is currently your cheapest option to Dublin, with prices starting at C$ 505. Additional round-trip tickets that might be worth considering are offered by Delta and Icelandair, with the lowest prices starting at C$ 519 and C$ 523, respectively. United Airlines is priced at 44% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Dublin one-way?

    One-way options have recently been found by users for as low as C$ 497 on American Airlines. Other airlines that offer cheap prices include United Airlines from C$ 499 and British Airways from C$ 501 one-way.

  • 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 (73%), Aer Lingus (73%), British Airways (73%).

  • What are the cheapest flights from Seattle to Dublin?

    Looking at all options, your cheapest flight can be booked for C$ 1,015. While the most popular route (Seattle/Tacoma Intl - Dublin) can be booked for C$ 849 on average our data indicates C$ 1,172 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, January is the cheapest month in which you can book a flight from Seattle to Dublin (average of C$ 458). Flying from Seattle to Dublin in December is currently the most expensive (average of C$ 760). 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 29 July 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 548AverageC$ 843FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
Aer LingusCheapestC$ 632AverageC$ 968FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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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