$431 Cheap Flights from Seattle (SEA) to Dublin (DUB)

You can find cheap one-way flights from $431 and cheap return flights from $707 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) with Expedia. One-way flights generally range between $458 and $4501, and roundtrip flights usually range from $645 to $8184. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.

October is the cheapest month to fly from Seattle to Dublin, with average return fares around $654. This is about 14% lower than the average price throughout the year, as travel demand is typically lower in the fall. Other budget-friendly months include January and November.*Averages based on flights available on Expedia in the last year.

Icelandair is one of the cheapest airlines offering connecting flights from Seattle - Tacoma Intl. (SEA) to Dublin (DUB) with a layover in an unspecified location, starting from around $676 for a round-trip ticket. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.

The best time to fly from Seattle (SEA) to Dublin (DUB) is typically in October or November. During these months, you can expect average return flight prices around $654. These months are ideal as they fall after the busy summer travel season, leading to lower fares and a more relaxed travel experience.*Prices based on flights available on Expedia in the last year.

Business class seats are offered on the SEA to DUB route. Airlines that offer business class service on this route include:

• United Airlines
• British Airways
• Aer Lingus
• Delta Air Lines
• Air Canada
• Lufthansa
• American Airlines
• Turkish Airlines
• Icelandair
• Finnair

First class is available with United Airlines.

A direct, return business class ticket from Seattle (SEA) to Dublin (DUB) typically costs between $6,537 - $9,879. A non-stop, one-way business class flight is usually around $6,542 - $8,473 per adult. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.

It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Dublin (DUB) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.