€308 Cheap flights to Seattle
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Seattle departing on 7/10. 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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What is the cheapest month to fly to Seattle?
If you’re not able to fly to Seattle in February, then January is your next best option. Flight prices from Ireland to Seattle during January average around €537.
What is the absolute cheapest flight to Seattle?
See prices from:
What is the cheapest day to depart on your flight to Seattle?
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 €632. Flights from Ireland to Seattle on a Monday will generally be more expensive and average around €793. 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 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 €710.
Cheapest flights to Seattle/Tacoma Intl
Find the cheapest flights to Seattle/Tacoma Intl from your nearest city or airport
| CHEAPEST MONTH TO FLY TO SEATTLE FROM DUBLIN | February | 18% cheaper | Flying from Dublin to Seattle costs on average just €516 in February |
| MOST EXPENSIVE MONTH TO FLY TO SEATTLE FROM DUBLIN | July | 40% more expensive | It costs about €879 for flights to Seattle from Dublin in July |
| MOST POPULAR MONTH TO FLY TO SEATTLE FROM DUBLIN | August | 285% more users visited | More momondo users searched in flights to Seattle from Dublin in August than any other month |
Cheap Seattle flight deals and tips
Summary info about Seattle flight prices, duration and airlines
Best One-Way Price | €308 |
|---|---|
Best Round-Trip Price | €361 |
Fastest flight time | 11h 35m |
Popular in | July |
Frequently asked questions about flying to Seattle
How far in advance should I book a flight to Seattle?
We recommend purchasing flights from Ireland to Seattle 20 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to Seattle for €627. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Ireland for as low as €430 on momondo.
Is there an alternative airport near Seattle?
Seattle Lake Union Spb Airport, Seattle King County/Boeing Airport, Kenmore Air Harbor Airport, Everett Paine Field Airport or Lopez Island Airport can be an alternative airport used for travel to Seattle.
When did momondo last update prices for flights to Seattle/Tacoma Intl Airport?
Prices for flights to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights to Seattle/Tacoma Intl Airport?
As of July 2025, there are 6 operators available to choose from for flights to Seattle/Tacoma Intl Airport.
How old do you have to be to fly 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 to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport 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 licence and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
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 to Seattle?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle.
Can I find flights to Seattle with flexible booking policies on momondo?
Flights to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights to Seattle?
Once all potential Seattle flight options are in front of you momondo lets you sort and filter flights based on preferences such as airline, price and flight times, amongst many other options.
I’m not ready to book a flight to Seattle right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle and alert you when they change.