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$355+ 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 9/22. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — SEA
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 Saturday or Thursday 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 July 29, 2025.

Round-trip from

$418
(SmartFares)

One-way from

$355
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,000

Good one-way deal

$703 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. 19% potential increase in price ($176 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 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 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 July 29, 2025.

This SmartFares deal was found by Cheapflights users on 7/28. 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.
Sat 9/610:15 amDUB - SEA
1 stop35h 35mScandinavian Airlines
Sun 9/214:20 pmSEA - DUB
1 stop17h 55mScandinavian Airlines
Deal found 7/28$418
This Flightnetwork deal was found by Cheapflights users on 7/29. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/44:10 pmDUB - SEA
Nonstop9h 40mAer Lingus
Thu 9/187:35 pmSEA - DUB
Nonstop9h 05mAer Lingus
Deal found 7/29$521
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2111:30 amDUB - SEA
1 stop13h 30mIcelandair
Sat 12/132:35 pmSEA - DUB
1 stop11h 40mIcelandair
Deal found 7/29$565

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 July 29, 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

Sat 9/6

10:15 am-1:50 pm

1 stop35h 35m

Seattle/Tacoma Intl

Sun 9/21

4:20 pm-6:15 pm

1 stop17h 55m

$418

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 9/4

4:10 pm-5:50 pm

Nonstop9h 40m

Seattle/Tacoma Intl

Thu 9/18

7:35 pm-12:40 pm

Nonstop9h 05m

$521

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Fri 11/21

11:30 am-5:00 pm

1 stop13h 30m

Seattle/Tacoma Intl

Sat 12/13

2:35 pm-10:15 am

1 stop11h 40m

$565

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Mon 9/22

11:30 am-7:14 pm

3 stops39h 44m

$355

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 9/25

4:20 pm-2:26 pm

3 stops54h 06m

$384

DublinSeattle

DUB - SEA

DUBSEA

Dublin

Thu 9/25

12:40 pm-2:00 pm

1 stop33h 20m

$466

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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 July 25, 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 June is currently the most expensive (average of $389). 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 July 29, 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 10% on airfare.

Weekly flight availability from Dublin to Seattle

Explore weekly flight availability from Dublin 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 July 29, 2025.

The most flights from DUB to SEA are scheduled on a Monday (3 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 on average).

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

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 July 29, 2025.
Read reviews from past customers who have flown Scandinavian Airlines, WestJet, and Aer Lingus from Dublin to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Scandinavian Airlines
7.3
Good
1,449 reviews

Overall

7.3

Food

6.6

Entertainment

6.6

Boarding

7.6

Crew

8.0

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2025

ATH - CPH

The flight crew of Aegean were very nice. I travelled coach, so comfort and such is based on that. However, their ground crew have a serious scam going. I flew from Athens to Santorini with all carry on baggage, nothing checked. On the return flight to Athens my baggage miraculously was "too big" for the over head compartments and had to pay to check my bags. I even told them I didn't pay coming over. Their answer? "I don't care." They hit everyone going back to Athens like that...that's a serious money maker at a minimum of 40 Euros per bag.
Scandinavian Airlines
7.3
Good
1,449 reviews
Scandinavian Airlines
7.3
Good
1,449 reviews

Overall

7.3

Food

6.6

Entertainment

6.6

Boarding

7.6

Crew

8.0

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2025

ATH - CPH

The flight crew of Aegean were very nice. I travelled coach, so comfort and such is based on that. However, their ground crew have a serious scam going. I flew from Athens to Santorini with all carry on baggage, nothing checked. On the return flight to Athens my baggage miraculously was "too big" for the over head compartments and had to pay to check my bags. I even told them I didn't pay coming over. Their answer? "I don't care." They hit everyone going back to Athens like that...that's a serious money maker at a minimum of 40 Euros per bag.
WestJet
7.2
Good
2,972 reviews
Scandinavian Airlines
7.3
Good
1,449 reviews

Overall

7.3

Food

6.6

Entertainment

6.6

Boarding

7.6

Crew

8.0

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2025

ATH - CPH

The flight crew of Aegean were very nice. I travelled coach, so comfort and such is based on that. However, their ground crew have a serious scam going. I flew from Athens to Santorini with all carry on baggage, nothing checked. On the return flight to Athens my baggage miraculously was "too big" for the over head compartments and had to pay to check my bags. I even told them I didn't pay coming over. Their answer? "I don't care." They hit everyone going back to Athens like that...that's a serious money maker at a minimum of 40 Euros per bag.
Aer Lingus
7.1
Good
1,190 reviews
Scandinavian Airlines
7.3
Good
1,449 reviews

Overall

7.3

Food

6.6

Entertainment

6.6

Boarding

7.6

Crew

8.0

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2025

ATH - CPH

The flight crew of Aegean were very nice. I travelled coach, so comfort and such is based on that. However, their ground crew have a serious scam going. I flew from Athens to Santorini with all carry on baggage, nothing checked. On the return flight to Athens my baggage miraculously was "too big" for the over head compartments and had to pay to check my bags. I even told them I didn't pay coming over. Their answer? "I don't care." They hit everyone going back to Athens like that...that's a serious money maker at a minimum of 40 Euros per bag.
Icelandair
7.0
Good
521 reviews
Scandinavian Airlines
7.3
Good
1,449 reviews

Overall

7.3

Food

6.6

Entertainment

6.6

Boarding

7.6

Crew

8.0

Comfort

7.3

Reviews

1 / 20
8.0
Excellent

Anonymous,Jun 2025

ATH - CPH

The flight crew of Aegean were very nice. I travelled coach, so comfort and such is based on that. However, their ground crew have a serious scam going. I flew from Athens to Santorini with all carry on baggage, nothing checked. On the return flight to Athens my baggage miraculously was "too big" for the over head compartments and had to pay to check my bags. I even told them I didn't pay coming over. Their answer? "I don't care." They hit everyone going back to Athens like that...that's a serious money maker at a minimum of 40 Euros per bag.

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.

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

    If you book a flight from Dublin to Seattle, you will be flying from Dublin to Seattle/Tacoma Intl. Flights to Seattle/Tacoma Intl (SEA) from Dublin (DUB) take 9h 40m for a nonstop flight. There are 2 flights from Dublin to Seattle per day from 3 airlines.

  • 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 $418. Additional round-trip tickets that might be worth considering are offered by Aer Lingus and Icelandair, with the lowest prices starting at $521 and $565, respectively. Scandinavian Airlines is currently priced 42% below the average price you’ll pay for this route.

  • 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 $572. While the most popular route (Dublin - Seattle/Tacoma Intl) can be booked for $428 on average our data indicates $2,929 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 June is currently the most expensive (average of $389). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Ocean Shores
Lakewood
Lynnwood
Lacey
Leavenworth
Renton
Olympia
Puyallup
Kent
Cle Elum
Chehalis
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Issaquah
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Shoreline
Federal Way
Shelton

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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.
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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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$458Average$712FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$605Average$816FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$684Average$803FlexibilityNo cancel feeOn-time71%

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