Q: How much does it cost for a return flight from Seattle to Northern Ireland?

Airfare is below average for this route at the moment. Seattle to Northern Ireland flights typically cost between £674 and £708 in September. The cheapest return flight price found within the last 3 days was £539 on Multiple Airlines (10 Sept-17 Sept).

Question 1

How much does it cost for a return flight from Seattle to Northern Ireland?

Accepted Answer

Airfare is below average for this route at the moment.Seattle to Northern Ireland flights typically cost between £674 and £708 in September.
The cheapest return flight price found within the last 3 days was £539 on Multiple Airlines (10 Sept-17 Sept).

Question 2

How long is the flight from Seattle to Northern Ireland?

Accepted Answer

British Airways and KLM can get you from Seattle to Northern Ireland in just under 13h 45m. Your travel time can differ by up to 5h 50m. There are 4472 mi between Seattle and Northern Ireland. This flight may include one or multiple stops.

Question 3

What is the cheapest month to book a flight from Seattle to Northern Ireland?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Seattle to Northern Ireland (average of £67). Flying from Seattle to Northern Ireland in July is currently the most expensive (average of £90). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 4

E

Accepted Answer

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

Question 5

E

Accepted Answer

If weather is an important factor for your trip to Northern Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

Question 6

What is the cheapest month to fly from Seattle to Northern Ireland?

Accepted Answer

The best pricing can be found in the month of March. Prices to Northern Ireland from Seattle average £671. You can even find prices in March for less than £671, as users have found deals to Northern Ireland from as low as £526. The month of July appears to be one of the more expensive times to travel to Northern Ireland from Seattle. Flying in the targeted month can save you up to 26%.

Question 7

What is the cheapest time of day to fly from SEA to NIR?

Accepted Answer

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Northern Ireland as you normally would.

Question 8

What airport do you fly from for flights from Seattle to Northern Ireland?

Accepted Answer

Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Northern Ireland from Seattle.

Question 9

Can I find deals for flights from Seattle to Northern Ireland that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Seattle to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 10

How can I find direct flights from Seattle to Northern Ireland?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Northern Ireland.

Question 11

Can I find deals for business class flights from Seattle to Northern Ireland?

Accepted Answer

Yes. Cheapflights offers flight deals from Seattle to Northern Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 12

How does Cheapflights help users find flights from Seattle to Northern Ireland?

Accepted Answer

Deals for Seattle to Northern Ireland flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Question 13

Why should you use Cheapflights to find cheap flight tickets from Seattle to Northern Ireland?

Accepted Answer

Cheapflights simply makes it quick and affordable to book flights from Seattle to Northern Ireland by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Question 14

Can Cheapflights find flights from Seattle to Northern Ireland with no change fees?

Accepted Answer

Yes! Cheapflights helps users easily find flights from Seattle to Northern Ireland with no change fees.

Question 15

Can Cheapflights notify me if prices for flights from Seattle to Northern Ireland become cheaper?

Accepted Answer

Not ready to book yet? You can track prices for flights from Seattle to Northern Ireland on Cheapflights with our Price Alert feature and get notified when better prices are available.

Round-trip from	£539
One-way from	£228
Popular in	July
Cheapest in	March
Average price	£628

Cheap flights from Seattle to Northern Ireland from £228

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Seattle to Northern Ireland

Keep the following information in mind while searching for Seattle to Northern Ireland flight deals. Data was last updated 22 August 2025.

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Cheapest flights from Seattle to Northern IrelandExplore the most affordable flight options available from Seattle to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2025.

Explore the most affordable flight options available from Seattle to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2025.

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How much does it cost for a return flight from Seattle to Northern Ireland?

Related info for your journey

Find useful and relevant information for your journey from Seattle to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Seattle to Northern Ireland?

How long is the flight from Seattle to Northern Ireland?

Can I find deals for flights from Seattle to Northern Ireland that include hotel bookings?

How can I find direct flights from Seattle to Northern Ireland?

Can I find deals for business class flights from Seattle to Northern Ireland?

What is the cheapest month to book a flight from Seattle to Northern Ireland?

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How does Cheapflights help users find flights from Seattle to Northern Ireland?

Why should you use Cheapflights to find cheap flight tickets from Seattle to Northern Ireland?

Can Cheapflights find flights from Seattle to Northern Ireland with no change fees?

Can Cheapflights notify me if prices for flights from Seattle to Northern Ireland become cheaper?

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Cheapest flights from Seattle to Northern Ireland
Explore the most affordable flight options available from Seattle to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 August 2025.