C$419 Cheap Flights from Seattle (SEAA) to Shannon (SNN)

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Flight deals from Seattle to Shannon

Looking for a cheap last-minute deal or the best return flight from Seattle to Shannon Airport? If you want to travel next month, return fares start from C$1,156. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle to Shannon

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Shannon flights are currently cheapest in September.

Seattle to Shannon: Alternative routes

Compare routes from Seattle to Shannon below. You may find an airport to fly into that's cheaper, faster, or easier than Shannon.

Seattle to Shannon: Flight information

The things to know before you go.
Cheapest flight foundC$420
Cheapest month to flySeptember

Finding cheap flights from Seattle to Shannon: Frequently asked questions

The best price we found for a return flight from Seattle to Shannon is C$1,036. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Seattle to Shannon. But we found flights with one stop from C$1,036.
As of June 2026, there are no flights flying from Seattle to Shannon.
The cheapest month to fly from Seattle to Shannon is usually August.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Shannon Airport on Sunday, August 16, 2026.
No airlines currently offer direct flights between Seattle and Shannon Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Shannon but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Shannon is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to Shannon is Icelandair .

Flying from Seattle to Shannon Airport (SNN): what you need to know

  • Get your vacation planning started by considering where you'll catch your flight from Seattle to Shannon Airport (SNN). Seattle-Tacoma International Airport (SEA) and Lake Union Sea Plane Base (LKE) are Seattle's main airports.

  • Shannon Airport is located in Shannon. The city operates in the UTC+0 timezone and is 7 hours ahead of Seattle.

  • Your flight from Seattle to SNN won't wait if you're running late, so get to the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • Popular months like July or vacation periods such as spring break and Christmas will mean bigger waits at check-in and security. Travelling then? Play it safe and head to the terminal even earlier. Arriving two hours before a domestic flight and up four hours ahead of international flights is a wise idea.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Think about adding a stopover to possibly find a cheaper flight from Seattle to SNN. Just uncheck 'Direct flights only' when browsing departures from Seattle-Tacoma International Airport (SEA). Take a break from travelling at one of these popular airports:

    • London Heathrow Airport (LHR)

    • O'Hare International Airport (ORD)

    • John F. Kennedy International Airport (JFK)

  • From central Seattle, SEA is approximately 23 kilometres away. Visit the official airport website or use navigation apps to work out the best way to reach the terminal.

  • Need a handy hotel close to Seattle-Tacoma International Airport? If you're catching an early flight from Seattle to Shannon Airport, these accommodation options will have you sleeping moments from your departure lounge:

Lake Union Sea Plane Base (LKE)

  • Get the most out of your vacation with a stopover on your flight from Seattle to Shannon Airport. Visit friends or family or tick a new city off your list. Whatever you decide to do, here's where you can stop between Lake Union Sea Plane Base and SNN:

    • Logan International Airport (BOS)

    • Charles de Gaulle Airport (CDG)

    • Newark Liberty International Airport (EWR)

  • LKE is about 3 kilometres from central Seattle. It takes 11 minutes or so to get to the airport by car from the city centre. Public transport takes approximately 23 minutes.

  • Get a head start on your vacation with an extra night away from home. Before catching your flight from Seattle to SNN, chill out in one of these hotels close to Lake Union Sea Plane Base:

About Shannon Airport (SNN)

Getting from Shannon Airport (SNN) to central Shannon

  • From Shannon Airport, Shannon is approximately 5 kilometres away. It takes around 7 minutes to reach the centre driving.

  • Travelling to the centre on public transport will take you around 10 minutes.

How to find the cheapest flights from Seattle to Shannon Airport (SNN)

  • The best price we've found for a one-way ticket from Seattle to Shannon Airport is C$419. The cheapest price for a return flight is C$1,036. Remember fares can change due to demand at the time of booking.

  • To get your hands on flight tickets from Seattle to SNN, book as early as possible. Airlines tend to offer the most competitive fares when flights are first released.

  • If you're flexible with your travel dates, check out the 'Whole month' tool. It'll give you the cheapest price in each month when searching for your ticket from Seattle to Shannon Airport.

  • Create a Price Alert and track any changes on this route through email or push notifications. You'll know straight away when the fares drop. Timing matters when searching for flight tickets from Seattle to SNN.

  • Play around with the filters to find your ideal journey. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Seattle to Shannon Airport, use the 'Sort by' function. You can also filter results by departure and arrival times, airline, and journey duration.

The best time to fly from Seattle to Shannon Airport (SNN)

  • April is the quietest time to fly to Shannon. Alternatively, follow the crowds and go in August. This is the most popular month for flights from Seattle to Shannon Airport, but the best time to go is up to you.

  • The warmest month in Shannon is July, with temperatures ranging between 10ºC and 22ºC. Lock in your flights from Seattle to SNN in this month if this is the type of weather you enjoy.

  • January sees average temperatures of between 0ºC and 9ºC. Search for cheap flights from Seattle to Shannon Airport sometime then if you like cooler conditions.

More about Shannon

  • When it comes to looking for somewhere to rest your head, you'll find the best places to stay in Shannon right here. Browse these hotels once you've locked in your flight from Seattle to Shannon Airport:

  • Every great vacation has to include some sightseeing. View Point Bunratty Castle, Cratloe Woods House and Sean Lemass Public Library are essential stops on your Shannon itinerary.

Complete your Shannon trip with a car rental

  • We use the same magic that helped you find your cheap flight from Seattle to Shannon Airport to track down your perfect ride. Browse our car rentals in Shannon and compare offers in one place. Plus you'll find all the info you need to know, from the most popular rental company to the best time to book.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.