Cheap flights from Seattle to Ireland from $239
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Ireland departing on 7/26. 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 Seattle to Ireland
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 Ireland?
In general, January is the cheapest month to fly from Seattle to Ireland. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $437. If you aren’t able to travel to Ireland during the month of January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $505.
What is the cheapest day to depart on your flight to Ireland?
The cheapest day to depart on your flight to Ireland is on a Wednesday when prices can be found for as low as $757. This is often the case because there is less demand to fly during this day of the week. Flights from Seattle to Ireland on a Saturday will generally be more expensive and average around $900. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Ireland?
According to our data, the cheapest time of day to fly to Ireland is at noon. momondo users have found flights departing from Seattle to Ireland at noon for as low as $610. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Ireland is in the afternoon when prices are around $866.
What is the cheapest Seattle/Tacoma Intl to Ireland flight route?
Fly from Seattle/Tacoma Intl to Dublin for the best Seattle/Tacoma Intl - Ireland flight prices
How far in advance should I book a flight to Ireland?
You are more likely to see cheaper flights to Ireland from Seattle when booking 26 weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around $679 when searching 26 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Seattle for as low as $618 on momondo.
What cabin class options are available on Seattle/Tacoma Intl to Ireland flights?
There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Ireland?
Icelandair, WestJet, and JetBlue are the most popular carriers operating from Seattle/Tacoma Intl to Ireland
What airlines fly to Ireland?
Aer Lingus, Icelandair and American Airlines are the top three most popular airlines that fly to Ireland from Seattle according to our data. Aer Lingus is the first choice among our users, with 58% of people opting to fly with this airline when traveling to Ireland. Keep in mind that there are 13 different airlines that fly to Ireland on a routine basis, so you have a few additional options to choose from.
How many flights depart from Seattle to Ireland on average per week?
3 flights are operational weekly from Seattle to Ireland as of June 2025. The most popular departure day for this route is Thu, with 100% of flights per week taking off on this day.
Cheap Seattle to Ireland flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Ireland
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Ireland?
Prices for flights from Seattle/Tacoma Intl Airport to Ireland are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Ireland?
As of June 2025, there are 13 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Ireland.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Ireland?
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 Seattle/Tacoma Intl Airport to Ireland.
What documentation or ID do you need to fly to Ireland?
The travel and health documents you'll need for your trip to Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Ireland. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to Ireland?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to Ireland is Airbus A330-200 (50.02% of total bookings). The next most popular plane models are Airbus A330-900neo (14.42%), Boeing 787-10 Dreamliner (9.34%), and Boeing 777-300ER (6.89%).
Best airlines flying from Seattle to Ireland
Compare and see reviews for airlines that fly from Seattle to Ireland with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $379 | Free Cancellation | Rating 7.0 499 reviews | |||
| PriceFrom $391 | Free Cancellation | Rating 7.0 2,776 reviews | |||
| PriceFrom $445 | Free Cancellation | Rating 6.6 7,008 reviews | |||
| PriceFrom $452 | Free Cancellation | Rating 7.1 1,117 reviews | |||
| PriceFrom $455 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $468 | Free Cancellation | Rating 7.3 1,387 reviews | |||
| PriceFrom $474 | Free Cancellation | Rating 7.8 1,358 reviews | |||
| PriceFrom $486 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $490 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $496 | Free Cancellation | Rating 6.7 7,139 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to Ireland?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Ireland. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Seattle to Ireland with flexible booking policies on momondo?
Yes. All flights to Ireland from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Seattle to Ireland?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ireland from Seattle.
I’m not ready to book a flight from Seattle to Ireland right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Ireland, momondo offers a useful price alert feature which will track prices for flights to Ireland from Seattle and alert you when they change.