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$321+ Cheap flights from Dublin (DUB) to Seattle (SEA)

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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Dublin to Seattle/Tacoma Intl are usually found in February or January, booked 20 days in advance, depart on a Sunday or Tuesday and return on a Wednesday

Cheap flight deals from Dublin to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) to Seattle (SEA). 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 June 12, 2025.

Round-trip from

$510
(lastminute.com)

One-way from

$342
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$863

Good round-trip deal

$699 or less

Good one-way deal

$581 or less
From Dublin to Seattle/Tacoma Intl
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One-way flight from Dublin to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 20% potential increase in price ($188 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Dublin to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Dublin to Seattle/Tacoma Intl.
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Find flight deals from Dublin to Seattle

Cheapest flights from Dublin to Seattle
Explore the most affordable flight options available from Dublin to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This SmartFares deal was found by Cheapflights users on 6/12. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:05 pmDUB - SEA
1 stop26h 55mScandinavian Airlines
Sun 10/124:20 pmSEA - DUB
1 stop17h 55mScandinavian Airlines
Deal found 6/12$408
This SmartFares deal was found by Cheapflights users on 6/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1012:15 pmDUB - SEA
1 stop16h 25mIcelandair
Wed 10/13:45 pmSEA - DUB
1 stop13h 30mIcelandair
Deal found 6/11$586
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/72:05 pmDUB - SEA
1 stop27h 31mAmerican Airlines
Mon 11/1011:45 amSEA - DUB
2 stops23h 50mAmerican Airlines
Deal found 6/11$587
This Bravofly deal was found by Cheapflights users on 6/10. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/194:10 pmDUB - SEA
Nonstop9h 40mAer Lingus
Fri 7/47:35 pmSEA - DUB
Nonstop9h 00mAer Lingus
Deal found 6/10$667
This British Airways deal was found by Cheapflights users on 6/10. 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.
Wed 6/1810:55 amDUB - SEA
1 stop15h 25mBritish Airways
Mon 6/301:30 pmSEA - DUB
1 stop12h 10mBritish Airways
Deal found 6/10$672
This KLM deal was found by Cheapflights users on 6/10. 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.
Tue 9/98:55 amDUB - SEA
1 stop15h 10mKLM
Thu 9/187:20 amSEA - DUB
1 stop17h 55mKLM
Deal found 6/10$673
This Delta deal was found by Cheapflights users on 6/12. 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.
Fri 11/75:55 amDUB - SEA
2 stops16h 50mDelta
Mon 11/102:00 pmSEA - DUB
1 stop17h 40mDelta
Deal found 6/12$674
This Iberia deal was found by Cheapflights users on 6/10. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1912:45 pmDUB - SEA
1 stop13h 35mMultiple Airlines
Wed 6/253:10 pmSEA - DUB
1 stop12h 30mMultiple Airlines
Deal found 6/10$688
This Iberia deal was found by Cheapflights users on 6/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/411:45 amDUB - SEA
1 stop20h 58mIberia
Wed 9/103:00 pmSEA - DUB
1 stop12h 40mIberia
Deal found 6/11$759

Cheapflights Fare Finder

Customize your flight search to find flights from Dublin 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 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Dublin to Seattle that are best for you.

Fly from

Dublin

Fly to

Seattle

Route

Depart

Return

Price

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 9/25

7:05 pm-2:00 pm

1 stop26h 55m

Seattle/Tacoma Intl

Sun 10/12

4:20 pm-6:15 pm

1 stop17h 55m

$408

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 9/10

12:15 pm-8:40 pm

1 stop16h 25m

Seattle/Tacoma Intl

Wed 10/1

3:45 pm-1:15 pm

1 stop13h 30m

$586

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 11/7

2:05 pm-9:36 am

1 stop27h 31m

Seattle/Tacoma Intl

Mon 11/10

11:45 am-7:35 pm

2 stops23h 50m

$587

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Wed 10/8

12:45 pm-6:20 pm

1 stop13h 35m

Seattle/Tacoma Intl

Thu 10/23

1:30 pm-9:50 am

1 stop12h 20m

$672

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 9/9

8:55 am-4:05 pm

1 stop15h 10m

Seattle/Tacoma Intl

Thu 9/18

7:20 am-9:15 am

1 stop17h 55m

$673

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 11/7

5:55 am-2:45 pm

2 stops16h 50m

Seattle/Tacoma Intl

Mon 11/10

2:00 pm-3:40 pm

1 stop17h 40m

$674

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sun 6/22

12:40 pm-12:44 am

1 stop20h 04m

Seattle/Tacoma Intl

Sat 7/5

10:40 am-11:40 am

1 stop17h 00m

$699

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Tue 7/15

4:10 pm-5:50 pm

Nonstop9h 40m

Seattle/Tacoma Intl

Mon 7/21

7:35 pm-12:40 pm

Nonstop9h 05m

$737

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 8/4

11:45 am-12:43 am

1 stop20h 58m

Seattle/Tacoma Intl

Wed 9/10

3:00 pm-11:40 am

1 stop12h 40m

$759

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Sun 11/30

9:00 am-9:56 pm

1 stop20h 56m

Seattle/Tacoma Intl

Sun 2/15

11:50 pm-7:00 am

2 stops23h 10m

$797

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 17 results
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Best time to book a flight from Dublin to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Dublin 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 Dublin to Seattle

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

Use this chart to determine the optimal time to book a round-trip flight from Dublin to Seattle. Price data was last updated on June 9, 2025.

To ensure you get the cheapest price possible for a flight from Dublin to Seattle, you should look to book at least 20 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Dublin to Seattle (average of $238). Flying from Dublin to Seattle in July is currently the most expensive (average of $391). 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 DUB to SEA?

Find hourly flight availability from Dublin 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 June 12, 2025.

One of the essential ways to save on airfare from Dublin to Seattle is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 13% on airfare.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 June 12, 2025.
See what other customers who have flown with Delta, KLM and United Airlines from Dublin to Seattle have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
JetBlue
7.3
Good
2,925 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Turkish Airlines
7.3
Good
3,848 reviews
Delta
8.0
Very good
7,946 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

  • How popular is this Dublin to Seattle flight route?

    Flights from Dublin to Seattle/Tacoma Intl have been viewed 2 times in the past calendar month.

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

    Flying on Scandinavian Airlines is currently your cheapest option to Seattle, with prices starting at $510. Additional round-trip tickets that might be worth considering are offered by Icelandair and Aer Lingus, with the lowest prices starting at $586 and $667, respectively. Scandinavian Airlines is currently priced 31% below the average price you’ll pay for this route.

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

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as $433. However, be on the lookout for offers from WestJet and Scandinavian Airlines, as they are both options that can get you from Dublin to Seattle for a low price.

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

    Consider American Airlines (85%), Aer Lingus (85%) or British Airways (85%) when booking your flight. These represent the most reliable airlines when flying from Dublin to Seattle.

  • What are the cheapest flights from Dublin to Seattle?

    Looking at all options, your cheapest flight can be booked for $514. While the most popular route (Dublin - Seattle/Tacoma Intl) can be booked for $481 on average our data indicates $689 when flying from Dublin to Seattle.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dublin to Seattle 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 Dublin to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Dublin to Seattle (average of $238). Flying from Dublin to Seattle in July is currently the most expensive (average of $391). 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

Traveling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Dublin to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Dublin to Portland flights
Dublin to Spokane flights
Cork to Seattle flights
Shannon to Spokane flights
Shannon to Seattle flights
Cork to Portland flights
Shannon to Portland flights

Top 3 airlines flying from Dublin to Seattle

Discover the top 3 airlines that operate flights from Dublin 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 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$556Average$834FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$605Average$858FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$684Average$832FlexibilityNo cancel feeOn-time71%

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