Question 1

What is the cheapest airline that flies from Ireland to Seattle/Tacoma Intl?

Accepted Answer

Aer Lingus, WestJet, and British Airways are the most popular carriers operating from Ireland to Seattle/Tacoma Intl

Question 2

What is the cheapest month to fly to Seattle?

Accepted Answer

If you’re not able to fly to Seattle in February, then November is your next best option. Flight prices from Ireland to Seattle during November average around €537.

Question 3

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

Question 4

What is the cheapest time of day to depart on your flight to Seattle?

Accepted Answer

Our data shows that the cheapest Ireland to Seattle flights are usually those with departure times in the morning. Our users have found flights to Seattle in the morning for as low as €565. Flights in the afternoon are often more expensive, with an average ticket price of €698.

Question 5

Can stopping save me money on Ireland to Seattle flights?

Accepted Answer

You could potentially save up to 39% on your flight if you consider stops on a Ireland to Seattle flight.

Question 6

How far in advance should I book a flight to Seattle?

Accepted Answer

You are more likely to see cheaper flights to Seattle from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around €605 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Ireland for as low as €554 on momondo.

Question 7

How many flights depart from Ireland to Seattle on average per day?

Accepted Answer

As of December 2025, 2 flights take off from Ireland and land in Seattle each day. The most common flight departure time for this route is 16:00, with 100% of daily flights taking off in the afternoon.

Question 8

Which airline has the best punctuality record on Ireland to Seattle flights?

Accepted Answer

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 11% of their flights experiencing any sort of delay.

Question 9

What cabin class options are available on Ireland to Seattle/Tacoma Intl flights?

Accepted Answer

There is only 1 cabin class available to choose from on Ireland 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.

Question 10

How often are flights from Ireland to Seattle delayed?

Accepted Answer

Historically, on average around 11% of flights between Ireland and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 141 minutes.

Question 11

What is the cheapest day to depart on your flight to Seattle?

Accepted Answer

Our data shows that Thursday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as €633. Flights from Ireland to Seattle on a Wednesday will generally be more expensive and average around €792. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Question 12

How long does it take to fly to Seattle?

Accepted Answer

On average, it takes 9h 39m to fly from Ireland to Seattle if you fly out of Dublin (the most popular airport in Ireland) and into Seattle (the most popular airport in Seattle). If you’re flying out of Shannon and into Seattle, then the flight time is around 18h 29m.

Question 13

How many flights depart from Ireland to Seattle on average per week?

Accepted Answer

As of December 2025, 16 flights take off from Ireland and land in Seattle each week. The most common flight departure day for this route is Mon, with 25% of weekly flights taking off on this day.

Question 14

Which airlines fly to Seattle?

Accepted Answer

Aer Lingus, Icelandair and British Airways are the top three most popular airlines that fly to Seattle from Ireland according to our data. Aer Lingus is the first choice among our users, with 56% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 4 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Question 15

What is the most punctual flight time for Ireland to Seattle flights?

Accepted Answer

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Question 16

What is the cheapest Ireland to Seattle/Tacoma Intl flight route?

Accepted Answer

Fly from Dublin to Seattle/Tacoma Intl for the best Ireland - Seattle/Tacoma Intl flight prices

Question 17

When did momondo last update prices for flights from Ireland to Seattle/Tacoma Intl Airport?

Accepted Answer

Prices for flights from Ireland to Seattle/Tacoma Intl Airport were last updated today.

Question 18

How many operators does momondo search for flights from Ireland to Seattle/Tacoma Intl Airport?

Accepted Answer

The number of operators available for flights from Ireland to Seattle/Tacoma Intl Airport is 4 as of December 2025.

Question 19

How old do you have to be to fly from Ireland to Seattle/Tacoma Intl Airport?

Accepted Answer

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to Seattle/Tacoma Intl Airport.

Question 20

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

Accepted Answer

The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best price found	€713
Fastest flight time	9h 39m
Direct flights	Every day
Airports in Seattle	1 airport

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom €380	Free Cancellation	Rating 7.0 592 reviews	Search Icelandair flights
Aer Lingus	PriceFrom €472	Free Cancellation	Rating 7.2 1,412 reviews	Search Aer Lingus flights
British Airways	PriceFrom €498	Free Cancellation	Rating 6.7 7,618 reviews	Search British Airways flights
American Airlines	PriceFrom €517	Free Cancellation	Rating 7.2 11,067 reviews	Search American Airlines flights

Cheap flights from Ireland to Seattle from €318

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Seattle departing on 26/2. 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 Ireland to Seattle

What is the cheapest month to fly to Seattle?

If you’re not able to fly to Seattle in February, then November is your next best option. Flight prices from Ireland to Seattle during November average around €537.

What is the cheapest day to depart on your flight to Seattle?

What is the cheapest time of day to depart on your flight to Seattle?

Our data shows that the cheapest Ireland to Seattle flights are usually those with departure times in the morning. Our users have found flights to Seattle in the morning for as low as €565. Flights in the afternoon are often more expensive, with an average ticket price of €698.

What is the cheapest Ireland to Seattle/Tacoma Intl flight route?

Fly from Dublin to Seattle/Tacoma Intl for the best Ireland - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

What cabin class options are available on Ireland to Seattle/Tacoma Intl flights?

There is only 1 cabin class available to choose from on Ireland 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 Ireland to Seattle flights?

You could potentially save up to 39% on your flight if you consider stops on a Ireland to Seattle flight.

What is the cheapest airline that flies from Ireland to Seattle/Tacoma Intl?

Aer Lingus, WestJet, and British Airways are the most popular carriers operating from Ireland to Seattle/Tacoma Intl

Which airlines fly to Seattle?

How often are flights from Ireland to Seattle delayed?

Historically, on average around 11% of flights between Ireland and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 141 minutes.

What is the most punctual flight time for Ireland to Seattle flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Ireland to Seattle flights?

According to our data, Aer Lingus have had the fewest delays on this route over the last 12 months, with about 11% of their flights experiencing any sort of delay.

How many flights depart from Ireland to Seattle on average per day?

As of December 2025, 2 flights take off from Ireland and land in Seattle each day. The most common flight departure time for this route is 16:00, with 100% of daily flights taking off in the afternoon.

How many flights depart from Ireland to Seattle on average per week?

As of December 2025, 16 flights take off from Ireland and land in Seattle each week. The most common flight departure day for this route is Mon, with 25% of weekly flights taking off on this day.

How long does it take to fly to Seattle?

On average, it takes 9h 39m to fly from Ireland to Seattle if you fly out of Dublin (the most popular airport in Ireland) and into Seattle (the most popular airport in Seattle). If you’re flying out of Shannon and into Seattle, then the flight time is around 18h 29m.

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When did momondo last update prices for flights from Ireland to Seattle/Tacoma Intl Airport?

How many operators does momondo search for flights from Ireland to Seattle/Tacoma Intl Airport?

How old do you have to be to fly from Ireland to Seattle/Tacoma Intl Airport?

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

What is the most popular plane model from Ireland to Seattle?

Best airlines flying from Ireland to Seattle

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