Cheap flights from Dublin to Seattle from £286
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Dublin to Seattle departing on 8/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Dublin to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Seattle?
The cheapest month to fly to Seattle from Dublin is in February. Flight prices, which tend to average around £447, are often lower during this time because this is during the off-season. The month of January is another great option to travel to Seattle, with average flight prices from Dublin averaging around £466.
What is the cheapest day to depart on your flight to Seattle?
According to our data, Wednesday is the cheapest day to fly to Seattle from Dublin. The lowest ticket price found for a Wednesday departure recently was £546. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Seattle on Saturday is £765.
What is the cheapest time of day to depart on your flight to Seattle?
According to our data, the cheapest time of day to fly to Seattle is in the morning. momondo users have found flights departing from Dublin to Seattle in the morning for as low as £528. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive, with an average ticket price of £607.
What is the cheapest Dublin to Seattle/Tacoma Intl flight route?
Fly from Dublin to Seattle/Tacoma Intl for the best Dublin - Seattle/Tacoma Intl flight prices
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from Dublin when booking 17 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around £546 when searching 17 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Dublin for as low as £500 on momondo.
What cabin class options are available on Dublin to Seattle/Tacoma Intl flights?
There are 2 cabin classes available to choose from on Dublin to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Dublin to Seattle flights?
You could potentially save up to 24% on your flight if you consider stops on a Dublin to Seattle flight.
How have Dublin to Seattle flight prices changed over time?
As of June 2025, prices for Dublin to Seattle flights are approximately 0% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Dublin to Seattle/Tacoma Intl?
WestJet, Icelandair, and JetBlue are the most popular carriers operating from Dublin to Seattle/Tacoma Intl
Which airlines fly to Seattle?
Aer Lingus, Icelandair and British Airways are the top three most popular airlines that fly to Seattle from Dublin according to our data. Aer Lingus is the first choice among our users, with 60% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 3 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
How many flights depart from Dublin to Seattle on average per week?
As of June 2025, there are 6 flights per week flying from Dublin to Seattle. The most common day of the week flights depart is Wed, with 50% of flights taking off on this day.
When to book flights from Dublin to Seattle
Cheap Dublin to Seattle (DUB to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Dublin to Seattle
How far is Dublin to Seattle/Tacoma Intl by plane?
The distance between Dublin and Seattle/Tacoma Intl is about 4518.4 mi. By plane, this route typically takes 9h 40m.
When did momondo last update prices for flights from Dublin Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Dublin Airport to Seattle/Tacoma Intl Airport were last updated today.
How many operators does momondo search for flights from Dublin Airport to Seattle/Tacoma Intl Airport?
As of June 2025, there are 3 operators available to choose from for flights from Dublin Airport to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Dublin Airport to Seattle/Tacoma Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Dublin Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Dublin to Seattle?
Based on momondo bookings for flights between Dublin and Seattle, the leading plane model is Airbus A330-200, making up 80.48% of the total bookings. Other popular models include Airbus A318/A319/A320/A321 with 8.56%, Airbus A330-300 with 3.08%, and Boeing 737-900 Passenger/BBJ3 (winglets) with 2.74%.
What is the most popular airline from Dublin to Seattle?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Dublin to Seattle is Aer Lingus (60% of total bookings). The next most popular airlines are Icelandair (31%) and British Airways (9%).
Best airlines flying from Dublin to Seattle
Compare and see reviews for airlines that fly from Dublin to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £345 | Free Cancellation | Rating 6.6 7,011 reviews | |||
| PriceFrom £364 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom £424 | Free Cancellation | Rating 7.1 1,118 reviews |
Aer Lingus Flights From Dublin to Seattle
Aer Lingus is one of the most popular airlines flying from Dublin to Seattle, operating 6 flights/week on average for this route. A good Aer Lingus flight deal for Dublin to Seattle starts from £577 round-trip, up to an average price of £802. Our users have rated Aer Lingus at 7.1/10.
British Airways Flights From Dublin to Seattle
Another popular option for Dublin to Seattle flights is British Airways (6.6/10, 7,011 ratings). British Airways flies from Dublin to Seattle around 7 times per week, with deals starting from £468 round-trip and rising to an average price of around £702.
Travelling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Dublin to Seattle?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Dublin to Seattle for you.
Can I find flights from Dublin to Seattle with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Seattle from Dublin with this policy.
How can momondo help me find flights from Dublin to Seattle?
momondo helps you find the best flight between Dublin and Seattle by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Dublin to Seattle right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Dublin to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.