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$317 Cheap Flights from Seattle (SEA) to Dublin (DUB)

View $317 flight on Sun, Dec 27, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Dublin Airport (DUB)

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Cheap Flights from Seattle to Dublin (SEA-DUB)

Prices were available within the past 7 days and start at $317 for one-way flights and $540 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Finnair
Tue, Apr 20 - Tue, Apr 27
SEA
Seattle
DUB
Dublin
$540 Roundtrip, found 2 days ago
$540
Roundtrip
found 2 days ago
Select Finnair flight, departing Tue, Apr 20 from Seattle to Dublin, returning Tue, Apr 27, priced at $540 found 2 days ago
British Airways
Wed, Nov 18 - Tue, Nov 24
SEA
Seattle
DUB
Dublin
$541 Roundtrip, found 7 hours ago
$541
Roundtrip
found 7 hours ago
Select British Airways flight, departing Wed, Nov 18 from Seattle to Dublin, returning Tue, Nov 24, priced at $541 found 7 hours ago
American Airlines
Wed, Nov 18 - Tue, Nov 24
SEA
Seattle
DUB
Dublin
$541 Roundtrip, found 7 hours ago
$541
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Wed, Nov 18 from Seattle to Dublin, returning Tue, Nov 24, priced at $541 found 7 hours ago
British Airways
Mon, Dec 7 - Tue, Dec 15
SEA
Seattle
DUB
Dublin
$541 Roundtrip, found 5 days ago
$541
Roundtrip
found 5 days ago
Select British Airways flight, departing Mon, Dec 7 from Seattle to Dublin, returning Tue, Dec 15, priced at $541 found 5 days ago
United
Tue, Dec 1 - Thu, Dec 10
SEA
Seattle
DUB
Dublin
$542 Roundtrip, found 15 hours ago
$542
Roundtrip
found 15 hours ago
Select United flight, departing Tue, Dec 1 from Seattle to Dublin, returning Thu, Dec 10, priced at $542 found 15 hours ago
United
Wed, Apr 7 - Wed, Apr 14
SEA
Seattle
DUB
Dublin
$544 Roundtrip, found 10 hours ago
$544
Roundtrip
found 10 hours ago
Select United flight, departing Wed, Apr 7 from Seattle to Dublin, returning Wed, Apr 14, priced at $544 found 10 hours ago
Aer Lingus
Tue, Apr 27 - Thu, May 6
SEA
Seattle
DUB
Dublin
$551 Roundtrip, found 2 days ago
$551
Roundtrip
found 2 days ago
Select Aer Lingus flight, departing Tue, Apr 27 from Seattle to Dublin, returning Thu, May 6, priced at $551 found 2 days ago
Finnair
Tue, Apr 6 - Tue, Apr 13
SEA
Seattle
DUB
Dublin
$552 Roundtrip, found 17 hours ago
$552
Roundtrip
found 17 hours ago
Select Finnair flight, departing Tue, Apr 6 from Seattle to Dublin, returning Tue, Apr 13, priced at $552 found 17 hours ago
Delta
Wed, Dec 2 - Wed, Dec 9
SEA
Seattle
DUB
Dublin
$556 Roundtrip, found 16 hours ago
$556
Roundtrip
found 16 hours ago
Select Delta flight, departing Wed, Dec 2 from Seattle to Dublin, returning Wed, Dec 9, priced at $556 found 16 hours ago
Iberia
Mon, Nov 16 - Tue, Nov 24
SEA
Seattle
DUB
Dublin
$556 Roundtrip, found 6 hours ago
$556
Roundtrip
found 6 hours ago
Select Iberia flight, departing Mon, Nov 16 from Seattle to Dublin, returning Tue, Nov 24, priced at $556 found 6 hours ago

Alternative airports near Dublin

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Dublin Airport DUB. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $1,163
DUB
Dublin Airport
CheapestClosest
Average driving time to city center14 min
Flights from $1,163

What you need to know for your flight from Seattle - Tacoma Intl. to Dublin

Seattle (SEA) to Dublin (DUB) at a glance

Traveling from Seattle (SEA) to Dublin (DUB) opens up a range of airline options for your international journey. Whether you're considering full-service airlines or budget carriers, you can easily compare flights to discover the best fit for your budget, schedule, and travel preferences. As you prepare to explore the iconic attractions and neighborhoods of Dublin, check out the essential details for flights departing from Seattle-Tacoma International Airport (SEA) to Dublin Airport (DUB).

  • Fastest flight duration: around 9 hours non-stop
  • Route distance: roughly 4,500 miles (7,240 km)
  • Flights per week: around 13 departures on average
  • Typical fares (one-way): economy tickets often range from $200–$705, depending on seasonality and how far ahead you book

Flights from Seattle - Tacoma International Airport (SEA) to Dublin Airport (DUB)

Based on the latest traveler bookings, here are the top airlines flying from Seattle to Dublin, favored for their non-stop and one-stop options. Common layover points include Keflavik International Airport (KEF) with approximately a 1 hour and 30 minute layover, Heathrow Airport (LHR) with around a 3-hour layover, and O'Hare International Airport (ORD), also featuring about a 3-hour layover. These choices allow you to mix and match price, total travel time, and cabin class to create the ideal itinerary.

  • Aer Lingus: This full-service airline provides both non-stop and one-stop flight options, with one-way ticket prices generally between $200 and $700. It comprises about 34% of the departures for this route, typically featuring a non-stop travel duration of 9 hours.
  • Icelandair: Known for its one-stop services, this full-service carrier offers one-way fares ranging from $200 to $1080. It accounts for around 24% of route departures, with an in-flight duration of 10 hours and 15 minutes, leading to a total travel time of approximately 13 hours and 15 minutes, including layover.
  • American Airlines: This well-established full-service airline provides both non-stop and one-stop services, with one-way fares usually between $305 and $895. It represents about 17% of total departures on this route, with non-stop flights taking approximately 9 hours.
  • United: Offering one-stop flights, this full-service airline has one-way fares typically ranging from $235 to $705. It accounts for about 5% of departures on this route, with an in-flight time of 10 hours and 15 minutes, resulting in a total journey time of roughly 13 hours and 15 minutes, including layover.
  • British Airways: This full-service carrier provides one-stop options with one-way fares generally falling between $245 and $1875. It covers around 5% of the departures on this route, featuring an in-flight duration of 10 hours and 15 minutes, leading to a total travel time of about 13 hours and 15 minutes, including layover.

Travelers heading from Seattle to Dublin can enhance their journey by upgrading their flight. Top airlines offering Business Class options include Icelandair, Aer Lingus, and American Airlines, ensuring a more comfortable travel experience.

Best time to fly from Seattle (SEA) to Dublin (DUB)

The most popular months for travelers flying from Seattle to Dublin are March, April, and August, when peak temperatures in Dublin reach up to 58.6°F in August. If you prefer quieter travel, consider November, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 46.8°F. For better deals, January usually offers the lowest average one-way fare around $325. Flight availability peaks in July, with approximately 17 flights per week, making it easier to find convenient departure times. January has the fewest flights, with approximately 8 flights per week.

  • Cheapest time to fly: January usually offers good deals with average one-way fare around $325, roughly 28% cheaper than the yearly average.
  • Another budget-friendly time to fly: November typically offers an average one-way fare of around $366.
  • Most flight options: July has the highest number of flights from Seattle to Dublin, with approximately 17 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January41.9°F (5.5°C)Average8$325
February42.6°F (5.9°C)Average11$409
March43.9°F (6.6°C)High13$475
April46.8°F (8.2°C)High12$470
May51.4°F (10.8°C)Average15$525
June56.3°F (13.5°C)Average15$542
July59.2°F (15.1°C)Average17$481
August58.6°F (14.8°C)High16$526
September55.9°F (13.3°C)Average15$386
October52.3°F (11.3°C)Low12$431
November46.8°F (8.2°C)Low9$366
December43.5°F (6.4°C)Low12$529

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Seattle (SEA) to Dublin (DUB)

  • Seattle to Dublin (BFI-DUB): Located approximately 6 miles from Seattle - Tacoma International Airport (SEA), Boeing Field Airport (BFI) serves as a convenient departure point.
  • Seattle to Waterford (SEA-WAT): Waterford Airport (WAT) lies about 93 miles from Dublin Airport (DUB), making it a bit farther for travelers heading to Ireland.

How to find the best prices for flights from Seattle (SEA) to Dublin (DUB)

Getting some of the best deals on flights from Seattle to Dublin is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are typically available when booking 2-8 weeks in advance, although most travelers tend to book at least 2 months ahead. Afternoon departures (12 PM-6 PM) usually offer lower prices, while evening flights (6 PM-12 AM) are the most popular. Additionally, flying on Monday generally provides cheaper prices, while Friday remains the busiest travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Dublin Airport from Seattle - Tacoma International Airport

Dublin welcomes travelers from Seattle with a range of transport options based on price, convenience, and proximity. For departures, Seattle - Tacoma International Airport is roughly a 20-minute drive (covering about 14 miles) from central Seattle. Dublin city center is approximately a 15-minute drive (covering about 8 miles) from Dublin Airport, depending on traffic. Here's how to reach Dublin efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Dublin, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Dublin Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Dublin Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Dublin Airport, several key transport links are conveniently located nearby. Dublin Howth Junction Station, a train station, is about 4.9 miles from the airport by car, while Phibsborough Tram Stop, a metro station, is approximately 6.2 miles away by car. Additionally, 3Arena Seaport, a seaport, is located about 6.7 miles from the airport by car.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) cost?
You can find cheap one-way flights from $317 and cheap return flights from $540 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) with Expedia. One-way flights generally range between $458 and $4501, and roundtrip flights usually range from $645 to $8184. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB)?
October is the cheapest month to fly from Seattle to Dublin, with average return fares around $654. This is about 14% lower than the average price throughout the year, as travel demand is typically lower in the fall. Other budget-friendly months include January and November.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB)?
Aer Lingus operates around 7 direct flights from SEA to DUB every week.
What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB)?
Icelandair is one of the cheapest airlines offering connecting flights from Seattle - Tacoma Intl. (SEA) to Dublin (DUB) with a layover in an unspecified location, starting from around $676 for a round-trip ticket. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB)?
The best airline to fly with from Seattle, WA (SEA) to Dublin (DUB) will differ from traveler to traveler. If you like to fly early, Aer Lingus offers early morning flights. If price is the most important factor, Aer Lingus typically offers the lowest fares. Delta offers the most daily flights from Seattle to Dublin, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB)?
The best time to fly from Seattle (SEA) to Dublin (DUB) is typically in October or November. During these months, you can expect average return flight prices around $654. These months are ideal as they fall after the busy summer travel season, leading to lower fares and a more relaxed travel experience.*Prices based on flights available on Expedia in the last year.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB)?
You can find approximately 1 nonstop flights per day from Seattle - Tacoma Intl. (SEA) to (DUB). For more options, look at flights that include layovers.
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from SEA to DUB. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB)?
For flights from Seattle - Tacoma International Airport (SEA) to Dublin Airport (DUB), the most popular departure times are from 6pm to 9pm. About 29% of passengers choose this time window. Many major carriers, including Aer Lingus and British Airways, offer flights during this period. This timing is popular as it allows you to enjoy a full day in Seattle before your evening flight.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB)?
Flying nonstop from SEA to DUB takes around 9 hours, with the route covering approximately 4,527 miles. Flights with a layover typically take 8 hours 20 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB)?
Business class seats are offered on the SEA to DUB route. Airlines that offer business class service on this route include:

  • United Airlines
  • British Airways
  • Aer Lingus
  • Delta Air Lines
  • Air Canada
  • Lufthansa
  • American Airlines
  • Turkish Airlines
  • Icelandair
  • Finnair

First class is available with United Airlines.
How much is a business class flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB)?
A direct, return business class ticket from Seattle (SEA) to Dublin (DUB) typically costs between $6,537 - $9,879. A non-stop, one-way business class flight is usually around $6,542 - $8,473 per adult. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) Dublin Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Dublin
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Turkish Airlines, United, WestJet
Roundtrip price
$540
Distance
4526 mi
Average flight time
9 hours 5 mins

Book with confidence

Seattle to Dublin Flights

The cheapest times to fly from Seattle to Dublin

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Dublin are during the month of April. You can find some of the cheapest flights from Seattle to Dublin with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Dublin

Sunday is one of the best days to book for cheap flights from Seattle to Dublin: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Dublin

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Dublin in 2026. You can also book with separate airlines for your outbound and return journeys, from $317 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Dublin flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Dublin airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Dublin Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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