London to Seattle Flights on Aer Lingus from £304.99*

Book London to Seattle flight deals*

£767.68
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Range£767.68-£842.91
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London to Seattle Flights

Fly from London to Seattle with Aer Lingus and visit one of the US's coolest cities.

Flying London to Seattle with Aer Lingus

Fly with Aer Lingus from London to Seattle and you can benefit from pre-clearance in Dublin or Shannon, so when you arrive you can collect your luggage and go. We have a range of luggage options to choose from when you book so you will have everything for a great holiday in Seattle no matter when you go. We also make flying safe and easy with online check in, contactless boarding and safety protocols to protect your health and wellbeing. Once on board your transatlantic flight, sit back, relax and enjoy our 4* service including a warm Irish welcome, in-flight entertainment and food and beverage service.

How do you find the cheapest flights from London to Seattle with Aer Lingus?

  1. Book your flights through our website
  2. Sign-up to the Aer Lingus newsletter for information on upcoming sales
  3. Collect Avos points by becoming an AerClub member
  4. Fly at less busy times or mid-week

What to see in Seattle?

Seattle must rank as one of America's hippest cities. There are so many reasons to visit this hub of creativity, enterprise, and amazing views. The list below is only the beginning:

Space Needle: Get a birds eye view of Seattle from the 'top house' of one of the most recognisable landmarks in the world. Built for the World's Fair in the 1960's the Space Needle offers panoramic views of the city and mountains beyond from over 500 feet up.

Pike Place Market: most famous as the home of the original Starbucks coffee, Pike Place Market is a large farmers market selling some of the freshest produce in the city. It is also home to some wonderful bars, restaurants, and a craft market, making it a must visit while in Seattle.

Museum of Pop Culture: From music to fashion to tattoos, this museum is anything but boring. Expect extensive exhibitions on everything from local legends Nirvana to science fiction with lots of interactivity to keep the whole family entertained.

Seattle Grunge Tour: if you are a fan of grunge music, do not miss out on a walking tour of some of the most iconic locations where your favourite musicians played, practiced, and lived.

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Book London to Seattle flight deals*

Book London to Seattle flight deals*
From
To
Fare Type
Dates
Price
FromLondon (LHR)ToSeattle (SEA)Each way
/
Economy
29 Jul 2025 - 8 Aug 2025

From

£546.72*

Seen: 23 hrs ago

FromLondon (LHR)ToSeattle (SEA)Each way
/
Economy
31 Jul 2025 - 8 Aug 2025

From

£586.86*

Seen: 22 hrs ago

* Fares displayed include air transportation charges, taxes and fees. Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Fares are economy class and may include connections with our partner airlines. Modifying this information may result in a different fare. Additional baggage fees and charges for optional products and services may apply.