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).

What cabin classes can I book on flights from Seattle to Shannon?

Four cabin classes are available on flights from Seattle to Shannon: • Economy Class • Premium Economy Class • Business Class • First Class Prices vary by airline.

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 London Heathrow (LHR) handles the largest share of one-stop connections on this route.

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

Yes. Being flexible with your travel dates can save you up to 62% on the Seattle to Shannon route. Tuesday is the cheapest departure day at $592 round-trip on average, while Friday is the most expensive at $1,534, a difference of $942. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

How long is a flight from Seattle to Shannon?

A nonstop flight from Seattle to Shannon takes 0h 00m, covering 4,485 miles.

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 are flight prices from Seattle to Shannon looking right now?

One-way fares from Seattle to Shannon are currently lower than usual. Average one-way flight prices are about $393, which is 31% below the typical average for this route.

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

Flying via Chicago O'Hare Intl (ORD) gives the shortest average 1-stop total travel time at 13h 59m, compared with 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.

What car rental options are available at Shannon Airport (SNN)?

Shannon Airport (SNN) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include: • Budget • Sixt • Europcar • Thrifty • Easirent

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

Round-trip flights from Seattle to Shannon range from $614 to $1,042, with an average of $847 over the past 12 months. Anything below $614 counts as a good deal.

What is the cheapest airline to fly from Seattle to Shannon?

United Airlines ($610) and British Airways ($783) are the cheapest airlines to fly round-trip from Seattle to Shannon according to KAYAK data over the last 5 days.

What is the most popular layover airport when flying from Seattle to Shannon?

London Heathrow (LHR) is the most popular layover for the Seattle to Shannon route. 42% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via LHR.

What is the cheapest layover airport when flying from Seattle to Shannon?

Flights via London Heathrow (LHR) offer the most affordable fares, with an average round-trip price of $657. Based on KAYAK data over the past 3 months.

When flying from Seattle to Shannon which airport offers the shortest layover?

Chicago O'Hare Intl (ORD) had the shortest average connection time for Seattle to Shannon layovers at 463 minutes over the past 3 months.

$339 CHEAP FLIGHTS from Seattle to Shannon (SEA - SNN)

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Cheapest round-trip

$610

Typical prices: $614-$1,042

United Airlines

Fri 10/5Sat 10/20

SEA - SNN • 2 stops

Cheapest one-way

$339

Typical prices: $532-$588

Multiple Airlines

Thu 3/1

SEA - SNN • 3 stops

Nonstop 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

When to travel

February

Cheapest • 45% price drop

May

Most popular

Good to know

Top layover airports

London Heathrow (LHR)

Cheapest • Avg $657 (round-trip)

Chicago O'Hare Intl (ORD)

Shortest trip • 13h 59m (one-way)

Insights

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We hope you love your trip to Shannon!

Flight Deals

Cheap Flights from Seattle to Shannon (SEA-SNN)

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

Round-trip

One-way

Last minute

Recent round-trip flight deals from Seattle to Shannon

Mon, Oct 5 - Tue, Oct 20

7:25 pm - 10:15 amSEA Seattle/Tacoma Intl-SNN Shannon

30h 50m2 stops San Francisco Newark

12:30 pm - 10:56 pmSNN Shannon-SEA Seattle/Tacoma Intl

18h 26m2 stops Newark Chicago O'Hare Intl

$610United Airlines

Mon, Oct 5 - Tue, Oct 20

11:59 pm - 10:15 amSEA Seattle/Tacoma Intl-SNN Shannon

26h 16m2 stops Houston George Bush Intcntl Newark

12:30 pm - 9:55 pmSNN Shannon-SEA Seattle/Tacoma Intl

17h 25m1 stop Newark

$610United Airlines

Mon, Oct 5 - Tue, Oct 20

10:48 pm - 10:15 amSEA Seattle/Tacoma Intl-SNN Shannon

27h 27m1 stop Newark

12:30 pm - 9:55 pmSNN Shannon-SEA Seattle/Tacoma Intl

17h 25m1 stop Newark

$610United Airlines

Tue, Oct 13 - Tue, Oct 20

7:00 am - 10:15 amSEA Seattle/Tacoma Intl-SNN Shannon

19h 15m1 stop Newark

12:30 pm - 9:55 pmSNN Shannon-SEA Seattle/Tacoma Intl

17h 25m1 stop Newark

$619United Airlines

Tue, Oct 6 - Fri, Oct 16

7:00 am - 10:15 amSEA Seattle/Tacoma Intl-SNN Shannon

19h 15m1 stop Newark

12:30 pm - 9:55 pmSNN Shannon-SEA Seattle/Tacoma Intl

17h 25m1 stop Newark

$619United Airlines

Tue, Oct 6 - Tue, Oct 13

1:00 pm - 10:15 amSEA Seattle/Tacoma Intl-SNN Shannon

13h 15m1 stop Newark

12:30 pm - 10:01 amSNN Shannon-SEA Seattle/Tacoma Intl

29h 31m2 stops Newark Denver Intl

$624United Airlines

Tue, Oct 6 - Fri, Oct 16

5:00 am - 10:15 amSEA Seattle/Tacoma Intl-SNN Shannon

21h 15m2 stops Denver Intl Newark

12:30 pm - 12:48 pmSNN Shannon-SEA Seattle/Tacoma Intl

32h 18m2 stops Newark Houston George Bush Intcntl

$624United Airlines

Tue, Oct 6 - Fri, Oct 16

8:30 am - 10:15 amSEA Seattle/Tacoma Intl-SNN Shannon

17h 45m2 stops Denver Intl Newark

12:30 pm - 9:55 pmSNN Shannon-SEA Seattle/Tacoma Intl

17h 25m1 stop Newark

$624United Airlines

Sun, Nov 1 - Sun, Nov 8

2:35 pm - 7:45 pmSEA Seattle/Tacoma Intl-SNN Shannon

21h 10m2 stops Reykjavik Keflavik Intl London Gatwick

5:30 pm - 5:00 pmSNN Shannon-SEA Seattle/Tacoma Intl

31h 30m2 stops London Heathrow Reykjavik Keflavik Intl

$745Multiple Airlines

Wed, Dec 2 - Mon, Dec 7

6:45 pm - 7:25 pmSEA Seattle/Tacoma Intl-SNN Shannon

16h 40m1 stop London Heathrow

5:30 pm - 11:25 amSNN Shannon-SEA Seattle/Tacoma Intl

25h 55m1 stop London Heathrow

$783British Airways

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 from Seattle to Shannon with more confidence.

Prices

Airlines

Layovers

How much is a round-trip flight from Seattle to Shannon?

Round-trip flights from Seattle to Shannon start at $610. Prices are below average for this route right now, with typical round-trip fares ranging from $614 to $1,042. The lowest price found in the past 5 days was $610 on United Airlines.

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

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

Find deals

Low season	November
High season	May
Cheapest flight	$339

Most popular time to fly and prices are also 35% lower on average.

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 round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

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).
What cabin classes can I book on flights from Seattle to Shannon?
Four cabin classes are available on flights from Seattle to Shannon:

• Economy Class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.
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

London Heathrow (LHR) handles the largest share of one-stop connections on this route.
Can I save money by using flexible dates for flights from Seattle to Shannon?
Yes. Being flexible with your travel dates can save you up to 62% on the Seattle to Shannon route. Tuesday is the cheapest departure day at $592 round-trip on average, while Friday is the most expensive at $1,534, a difference of $942. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
How long is a flight from Seattle to Shannon?
A nonstop flight from Seattle to Shannon takes 0h 00m, covering 4,485 miles.
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 are flight prices from Seattle to Shannon looking right now?
One-way fares from Seattle to Shannon are currently lower than usual. Average one-way flight prices are about $393, which is 31% below the typical average for this route.
How much time can I save by choosing a different layover airport from Seattle to Shannon?
Flying via Chicago O'Hare Intl (ORD) gives the shortest average 1-stop total travel time at 13h 59m, compared with 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.
What car rental options are available at Shannon Airport (SNN)?
Shannon Airport (SNN) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:
• Budget
• Sixt
• Europcar
• Thrifty
• Easirent
How much should I expect to pay for a Seattle to Shannon flight?
Round-trip flights from Seattle to Shannon range from $614 to $1,042, with an average of $847 over the past 12 months. Anything below $614 counts as a good deal.

If your dates can be flexible, aim for a Tuesday departure instead of Friday. On this route, Tuesday flights average $592 - about $942 less than Friday (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 $469 round-trip in that month - typically $912 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
- Carrygerry Country House

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SEA - SNN

$339 Find Cheap Flights from Seattle to Shannon - Compare and Save

Everything you should know

Cheap Flights from Seattle to Shannon (SEA-SNN)

Recent round-trip flight deals from Seattle to Shannon

Recent one-way flight deals from Seattle to Shannon

Recent last minute flight deals from Seattle to Shannon

Price, demand and travel trends for Seattle to Shannon flights

How much is a round-trip flight from Seattle to Shannon?

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

What is the cheapest airline to fly from Seattle to Shannon?

What is the most popular layover airport when flying from Seattle to Shannon?

What is the cheapest layover airport when flying from Seattle to Shannon?

When flying from Seattle to Shannon which airport offers the shortest layover?

Key details for Seattle to Shannon flights

Low season

High season

Cheapest flight

When to book flights from Seattle to Shannon

Your Seattle to Shannon flight questions, answered

Your guide to booking Seattle to Shannon flights

More options for your flight from Seattle to Shannon

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

Information on your arrival and departure airports

Cabin class types available on flights from Seattle to Shannon

Find direct flights to and from Seattle and Shannon

Flights from domestic origins to Shannon

Flights to other popular destinations

Find deals for your return flight