Question 1

Can stopping save me money on Ireland to Seattle flights?

Accepted Answer

You could potentially save up to 30% on your flight if you consider stops on a Ireland to Seattle flight.

Question 2

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

Accepted Answer

As of December 2025, 1 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 3

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 £532 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 £488 on momondo.

Question 4

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 55% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 5 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Question 5

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 6

What is the cheapest month to fly to Seattle?

Accepted Answer

The cheapest month to fly to Seattle from Ireland is in February. Flight prices, which tend to average around £452, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Seattle, with average flight prices from Ireland averaging around £473.

Question 7

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 8

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 9

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

Accepted Answer

As of December 2025, there are 12 flights per week flying from Ireland to Seattle. The most common day of the week flights depart is Mon, with 25% of flights taking off on this day.

Question 10

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

Accepted Answer

According to our data, Friday is the cheapest day to fly to Seattle from Ireland. The lowest ticket price found for a Friday departure recently was £566. 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 £746.

Question 11

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 12

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 13

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

Accepted Answer

According to our data, the cheapest time of day to fly to Seattle is in the morning. momondo users have found flights departing from Ireland to Seattle in the morning for as low as £537. 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 £602.

Question 14

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

Accepted Answer

There are 2 cabin classes 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 15

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

Accepted Answer

WestJet is the most popular carrier operating from Ireland to Seattle/Tacoma Intl

Question 16

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 are updated daily.

Question 17

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

Accepted Answer

As of December 2025, there are 5 operators available to choose from for flights from Ireland to Seattle/Tacoma Intl Airport.

Question 18

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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ireland to Seattle/Tacoma Intl Airport.

Question 19

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

Accepted Answer

The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best price found	£518
Fastest flight time	9h 50m
Direct flights	Thu and Sat
Airports in Seattle	1 airport

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom £321	Free Cancellation	Rating 7.4 1,607 reviews	Search Scandinavian Airlines flights
British Airways	PriceFrom £350	Free Cancellation	Rating 6.7 7,585 reviews	Search British Airways flights
Aer Lingus	PriceFrom £398	Free Cancellation	Rating 7.2 1,399 reviews	Search Aer Lingus flights
Icelandair	PriceFrom £406	Free Cancellation	Rating 7.0 591 reviews	Search Icelandair flights
American Airlines	PriceFrom £482	Free Cancellation	Rating 7.2 11,054 reviews	Search American Airlines flights

Cheap flights from Ireland to Seattle from £349

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 9/4. 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?

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?

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 are 2 cabin classes 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 30% 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?

WestJet is the most popular carrier 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, 1 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, there are 12 flights per week flying from Ireland to Seattle. The most common day of the week flights depart is Mon, with 25% of flights taking off on this day.

Cheap Ireland to Seattle flight deals and tips

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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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