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SEA - SNN

€827 Find Cheap Flights from Seattle to Shannon – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
€827
Typical prices: €546-€926
British Airways
Wed 17/1Mon 22/1
SEA - SNN • 1 stop
Cheapest one-way flight
€1,532
Typical prices: €472-€523
Multiple Airlines
Mon 22/10
SEA - SNN • 2 stops
Direct flights
Not available
There are currently no direct flights between Seattle and Shannon. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
February
Cheapest • 45% price drop
May
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
London Heathrow (LHR)
Cheapest • Avg €584 (return)
Chicago O'Hare Intl (ORD)
Shortest trip • 13h 59m (one-way)
Insights
Insights
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We hope you enjoy your trip to Shannon!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Shannon (SEA-SNN)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Seattle to Shannon

Sun, 17 Jan - Fri, 22 Jan
British Airways Logo
18:45 - 19:25SEA  Seattle/Tacoma Intl-SNN Shannon
16h 40m1 stop London Heathrow
British Airways Logo
07:50 - 16:50SNN  Shannon-SEA Seattle/Tacoma Intl
17h 00m1 stop London Heathrow
€827British Airways
Sun, 17 Jan - Fri, 22 Jan
British Airways Logo
06:06 - 11:30SEA  Seattle/Tacoma Intl-SNN Shannon
21h 24m2 stops Chicago O'Hare Intl London Heathrow
British Airways Logo
07:50 - 16:50SNN  Shannon-SEA Seattle/Tacoma Intl
17h 00m1 stop London Heathrow
€832British Airways
Sun, 15 Nov - Sun, 22 Nov
Multiple Airlines Logo
14:35 - 19:45SEA  Seattle/Tacoma Intl-SNN Shannon
21h 10m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
17:30 - 17:00SNN  Shannon-SEA Seattle/Tacoma Intl
31h 30m2 stops London Heathrow Reykjavik Keflavik Intl
€839Multiple Airlines
Sun, 17 Jan - Fri, 22 Jan
Multiple Airlines Logo
10:10 - 16:45SEA  Seattle/Tacoma Intl-SNN Shannon
22h 35m3 stops Vancouver Intl Calgary London Heathrow
Multiple Airlines Logo
07:50 - 09:32SNN  Shannon-SEA Seattle/Tacoma Intl
33h 42m2 stops London Heathrow Vancouver Intl
€844Multiple Airlines
Sun, 17 Jan - Fri, 22 Jan
Air Canada Logo
10:10 - 16:45SEA  Seattle/Tacoma Intl-SNN Shannon
22h 35m3 stops Vancouver Intl Calgary London Heathrow
Air Canada Logo
07:50 - 21:57SNN  Shannon-SEA Seattle/Tacoma Intl
22h 07m3 stops London Heathrow Toronto Pearson Intl Vancouver Intl
€851Air Canada
Mon, 16 Nov - Mon, 23 Nov
Multiple Airlines Logo
14:35 - 16:45SEA  Seattle/Tacoma Intl-SNN Shannon
18h 10m2 stops Reykjavik Keflavik Intl London Heathrow
Multiple Airlines Logo
17:30 - 17:00SNN  Shannon-SEA Seattle/Tacoma Intl
31h 30m2 stops London Heathrow Reykjavik Keflavik Intl
€856Multiple Airlines
Mon, 16 Nov - Mon, 23 Nov
Multiple Airlines Logo
14:35 - 16:45SEA  Seattle/Tacoma Intl-SNN Shannon
18h 10m2 stops Reykjavik Keflavik Intl London Heathrow
Multiple Airlines Logo
17:30 - 17:00SNN  Shannon-SEA Seattle/Tacoma Intl
31h 30m2 stops London Heathrow Reykjavik Keflavik Intl
€858Multiple Airlines
Wed, 18 Nov - Wed, 25 Nov
British Airways Logo
18:45 - 16:45SEA  Seattle/Tacoma Intl-SNN Shannon
14h 00m1 stop London Heathrow
British Airways Logo
07:50 - 16:50SNN  Shannon-SEA Seattle/Tacoma Intl
17h 00m1 stop London Heathrow
€870British Airways
Mon, 16 Nov - Mon, 23 Nov
British Airways Logo
18:45 - 16:45SEA  Seattle/Tacoma Intl-SNN Shannon
14h 00m1 stop London Heathrow
British Airways Logo
20:05 - 11:25SNN  Shannon-SEA Seattle/Tacoma Intl
23h 20m1 stop London Heathrow
€871British Airways
Wed, 18 Nov - Wed, 25 Nov
Multiple Airlines Logo
15:15 - 16:45SEA  Seattle/Tacoma Intl-SNN Shannon
17h 30m2 stops Vancouver Intl London Heathrow
Multiple Airlines Logo
07:50 - 14:37SNN  Shannon-SEA Seattle/Tacoma Intl
38h 47m2 stops London Heathrow Vancouver Intl
€874Multiple Airlines
Booking Insights

Price, demand, and travel trends for Seattle to Shannon flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

How much is a return flight from Seattle to Shannon?

Return flights from Seattle to Shannon typically range from €546 to €926. The lowest price found in the past 5 days was €827 on British Airways.

What's the cheapest day of the week to fly from Seattle to Shannon?

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Seattle to Shannon. It’s 31% cheaper than the average day, while Friday is the most expensive, with prices 81% higher.

Find deals

Key details for Seattle to Shannon flights

Low season

November

Cheapest flight

€827
Round-trip flight from Seattle to Shannon

When to book flights from Seattle to Shannon

Are your dates flexible? Find out the best times to travel from Seattle to Shannon based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Seattle to Shannon flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • How long is a flight from Seattle to Shannon?

    A direct flight from Seattle to Shannon takes 00m, covering 11,616 km.

  • Do I need a passport to fly from Seattle to Shannon?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Seattle to Shannon flight?

    Return flights from Seattle to Shannon range from €546 to €926, with an average of €752 over the past 12 months. Anything below €546 counts as a good deal.

  • Have flight prices from Seattle to Shannon changed much recently?

    Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about €827 to €5,930. That means the highest observed fare was about 7x higher than the lowest one.

  • How are flight prices from Seattle to Shannon looking right now?

    One-way fares from Seattle to Shannon are currently higher than usual. Average one-way flight prices are about €2,629, which is 423% above the typical average for this route.

  • Which car hire options are available at Shannon Airport (SNN)?

    Shannon Airport (SNN) hosts 5 major car hire companies, with daily rates starting from around €3 for economy cars. Top options include:

    • Budget
    • Sixt
    • Europcar
    • Thrifty
    • Easirent

  • Which airports can I use when flying from Seattle to Shannon?

    Flights from Seattle to Shannon usually depart from Seattle/Tacoma Intl (SEA) and arrive at Shannon (SNN).

  • Which airports do connecting flights from Seattle to Shannon pass through?

    One-stop flights from Seattle to Shannon most commonly connect through:

    • London Heathrow (LHR) – 42% of one-stop connections
    • New York John F Kennedy Intl (JFK) – 26% of one-stop connections
    • Chicago O'Hare Intl (ORD) – 23% of one-stop connections
    • Boston Logan Intl (BOS) – 6% of one-stop connections

  • Can I save money by using flexible dates for flights from Seattle to Shannon?

    Yes. Flexible dates can save you up to 62% on flights from Seattle to Shannon. Tuesday is the cheapest departure day at €526 return on average, while Friday is the most expensive at €1,363, a difference of €837.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different stopover airport from Seattle to Shannon?

    Flying via Chicago O'Hare Intl (ORD) gives the shortest average 1-stop total travel time of 13h 59m, compared to 14h 44m via Boston Logan Intl (BOS) and 15h 19m via Newark (EWR).

  • What is the time difference between Seattle and Shannon?

    Shannon is 8 hours ahead of Seattle (Irish Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking Seattle to Shannon flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Friday. On this route, Tuesday flights average €526, about €837 less than Friday fares (61% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Seattle to Shannon trip for February. Fares historically average €417 return in that month – typically €810 less than the most expensive month, which is October (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Shannon Airport.

    • Park Inn by Radisson Shannon Airport
    • Treacys Oakwood Hotel, Shannon
    • Carrygerry Country House

More options for your flight from Seattle to Shannon

Complete your trip to Shannon with a hotel stay or car hire

Car hire in Shannon
Hotels in Shannon
Holidays in Shannon