Find Cheap Flights from Seattle/Tacoma Intl to Shannon (SEA - SNN)

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Good to Know

Average Price:
$1084
(avg. price over the last 2 weeks)
Good Deal:
$882
or less (round trip)

When to Book Flights from Seattle/Tacoma Intl to Shannon

Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $881 or less.
The cheapest flight from Seattle/Tacoma Intl to Shannon was found 63 days before departure, on average.
Book at least 1 week before departure in order to get a below-average price.
On average*, there is no price difference when choosing to fly in the morning or the evening on this flight route.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Seattle/Tacoma Intl to Shannon Flights

How long does a flight from Seattle/Tacoma Intl to Shannon take?
An average nonstop flight takes 12h 25m, covering a distance of 4488 miles.
Which airlines provide the cheapest flights from Seattle/Tacoma Intl to Shannon?
In the past 3 days, the cheapest round-trip tickets were found on British Airways ($617), Multiple Airlines ($655) and Aer Lingus ($796).
Do I need a passport to fly between Seattle/Tacoma Intl and Shannon?
Yes.

Book cheap flights from Seattle/Tacoma Intl to Shannon (round-trip)

Airports
Origin
Seattle
$617
only
$617
Destination
Shannon
$617
only
$617
Mon, Apr 16
SEA
SNN
17h 05m
Mon, Apr 23
SNN
SEA
30h 57m
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
ZRH
LHR
Excellent 10.0

Flight was onetime, food on the flight was for purchase but it was vert nice, boarding was onetime and smooth.

MAD
LHR
Excellent 10.0

I have to rate British Airways as a 10 out of 10 in almost all categories...comfort of the plane, food and service, boarding, notifications, crew, etc. In particular, the long haul flight from London to Seattle everything was truly top notch!

Their baggage handlers damaged several parts on my checked-in luggage...three zipper pulls and one clasp. What are they doing with the bags? How can they damage so many things in one fell swoop? This is a good quality Atlantic suitcase. Also, on the short flights, in this case Madrid to London, they are now charging for EVERYTHING...even water and coffee. They said it was a new policy as of 1/1/2018.

PRG
LHR
Okay 4.6

The crew was sick and one lady kept running to the bathroom?!? The plane was old...

LHR
SEA
Excellent 8.6

The crew and the plan and the service were all top notch. However, their new policy as of 1/1/2018 in which they even charge for coffee and water seems very misplaced and excessive.

Their new policy as of 1/1/2018 in which they even charge for coffee and water on short flights (Madrid to London in this case) seems excessive, even in this day of ala carte flying. :-(

IAH
LHR
Excellent 8.0

Crew on the flight home was extremely friendly! Flights were all on time. Food service and drinks were very good. Great in flight entertainment options

Customer service personnel over the phone was so rude to me. Flight crew on the flight from dfw to lhr wasn’t friendly at all.

Mon, Mar 12
SEA
SNN
12h 25m
Mon, Mar 19
SNN
SEA
17h 49m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Jun 12
SEA
SNN
22h 21m
Tue, Jun 19
SNN
SEA
32h 10m
Trip: 8 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 4256 reviews
Overall
7.6
Boarding
7.7
Comfort
7.3
Crew
8.0
Entertainment
7.0
Food
6.9
BCN
DUB
Good 7.0

Crew nice. Space was better than most. Felt like Jet Blue.

No snack on 3 he flight ok I guess but....Lack of free beverage?

DUB
BOS
Good 7.0

Pleasant crew and good food/snack service almost forgotten as I stood at the baggage carousel for 40 minutes.

Baggage claim very frustrating (40 minutes) particularly after 12 hours of airports and airplanes. Messed up our ground transportation plans for no apparent reason. Totally unexplained!

BOS
DUB
Okay 5.6

The actual flight

Food and comfort. Seats too small and no leg room.

YYZ
DUB
Mediocre 2.0

Being charged $100 each way for checked baggage, no where on my itenerary did it mention that

SNN
LHR
Excellent 8.3

Nice seats food was decent crew excellent

Not enough room

Tue, Jul 17
SEA
SNN
14h 55m
Tue, Jul 24
SNN
SEA
15h 30m
Trip: 8 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 16166 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
LAX
MCO
Excellent 10.0

I am used to flying Frontier because of cost but recently traveled Delta and boy did I feel completely spoiled! Not only did my other half get our bags for free due to his status with Delta but the amenities they offer and the comfort of the economy seats compared to other airlines is a major difference. As a chronic pain patient, if I can find a Delta flight for a little more, I will be booking with them for sure! Highly recommend them!

LAX
MSP
Excellent 9.0

Had to sit in the middle row and I wasn’t given the option to get an aisle sit during check in.

No flexibility for seats

ATL
PIT
Excellent 9.0

Pilots and crew did an amazing job during unstable air coming into Pittsburgh. Great job.

SLC
YYZ
Excellent 9.6

Z

PIT
ATL
Excellent 10.0

I have always known of airlines to offer preboarding to those military members in uniform or on official orders. Delta took it one step further and allows prior service members to board also.

Tue, Apr 3
SEA
SNN
22h 21m
Tue, Apr 10
SNN
SEA
18h 49m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Mon, May 14
SEA
SNN
16h 45m
Tue, May 29
SNN
SEA
25h 14m
Trip: 16 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
MAD
Good 6.0

It was just ok.

Nothing was complimentary.

LHR
LYS
Mediocre 3.3

Safe landing

Was charged 65 pounds for checking one bag. This was a big news to me. BA claims it was because I booked through Kayak. Would not have booked the flight. Luggage cost is almost superior to flight cost. Forced me to check my overhead luggage. Flight was delayed one hour because we had to go back to gate to rebLANCE WEIGHT

MAD
LHR
Okay 5.3

old plane, no entertainment, had to pay for non alcohol drinks

PRG
LHR
Okay 4.6

The crew was sick and one lady kept running to the bathroom?!? The plane was old...

LHR
BWI
Okay 4.0

Quick boarding

Service was poor, flight attendants were rude.

Tue, May 15
SEA
SNN
16h 45m
Tue, May 29
SNN
SEA
25h 14m
Trip: 15 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
MAD
Good 6.0

It was just ok.

Nothing was complimentary.

LHR
NBO
Good 6.0

Crew was very nice and helpful

Did not get the seat according to the seatplan.I booked exit row seat 30..got 30..but exit row was 28.

IAH
LHR
Excellent 8.0

Crew on the flight home was extremely friendly! Flights were all on time. Food service and drinks were very good. Great in flight entertainment options

Customer service personnel over the phone was so rude to me. Flight crew on the flight from dfw to lhr wasn’t friendly at all.

PRG
LHR
Okay 4.6

The crew was sick and one lady kept running to the bathroom?!? The plane was old...

MAD
LHR
Okay 5.3

old plane, no entertainment, had to pay for non alcohol drinks

Tue, Mar 20
SEA
SNN
23h 11m
Tue, Mar 27
SNN
SEA
18h 49m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Apr 5
SEA
SNN
22h 21m
Sun, Apr 8
SNN
SEA
29h 40m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Aug 1
SEA
SNN
17h 40m
Wed, Aug 8
SNN
SEA
18h 05m
Trip: 8 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 4256 reviews
Overall
7.6
Boarding
7.7
Comfort
7.3
Crew
8.0
Entertainment
7.0
Food
6.9
BOS
DUB
Okay 5.6

The actual flight

Food and comfort. Seats too small and no leg room.

DUB
BOS
Good 7.6

Food was good. Entertainment selection was also good.

BUT. Entertainment got suspended a few times it was very annoying. Flight attendants passed right by us and almost forgot us

DUB
YYZ
Okay 4.0

Having had bad experiences with Aer Lingus before, I was hesitant to book with Aer Lingus again. But sadly, I was booking this flight last minute and had no other option. The route was Dublin to Calgary, via Toronto. I left myself plenty of time im Toronto to clear customs as I know it can take a while. The day of, the flight ended up being 1.5 hours longer than usual due to headwinds, leaving me with only 2.5 hours in Toronto. I ended up waiting 2 hours and 15 minutes for my bag and missing my connecting flight (my sister who was also on the same flight received hers in 30 mins and made the flight). Westjet was wonderful and put me on a later flight but Aer Lingus didn't have any assistance for me.

Aer Lingus lost my sister's luggage going to Ireland and never contacted my sister once the luggage was found. She only received it the day we flew back to Calgary. Poor customer service when inquiring about the bag, no compensation for necessities purchased.

SNN
LHR
Excellent 8.3

Nice seats food was decent crew excellent

Not enough room

DUB
LHR
Excellent 8.0

Could not check in on-line from Dublin on either Air canada or Aer Linguis websites. Time to sort out this long-standing problem

Tue, Jul 24
SEA
SNN
17h 30m
Wed, Aug 1
SNN
SEA
17h 49m
Trip: 9 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
MIA
Excellent 9.6

Nice new plane, great flight staff, great entertainment

Checking in at the gate took a lot of time and no food or bathrooms available

IAH
LHR
Excellent 8.0

Crew on the flight home was extremely friendly! Flights were all on time. Food service and drinks were very good. Great in flight entertainment options

Customer service personnel over the phone was so rude to me. Flight crew on the flight from dfw to lhr wasn’t friendly at all.

LHR
LYS
Mediocre 3.3

Safe landing

Was charged 65 pounds for checking one bag. This was a big news to me. BA claims it was because I booked through Kayak. Would not have booked the flight. Luggage cost is almost superior to flight cost. Forced me to check my overhead luggage. Flight was delayed one hour because we had to go back to gate to rebLANCE WEIGHT

LHR
NBO
Good 6.0

Crew was very nice and helpful

Did not get the seat according to the seatplan.I booked exit row seat 30..got 30..but exit row was 28.

LHR
SEA
Excellent 8.6

The crew and the plan and the service were all top notch. However, their new policy as of 1/1/2018 in which they even charge for coffee and water seems very misplaced and excessive.

Their new policy as of 1/1/2018 in which they even charge for coffee and water on short flights (Madrid to London in this case) seems excessive, even in this day of ala carte flying. :-(

Fri, Apr 13
SEA
SNN
23h 17m
Mon, Apr 23
SNN
SEA
20h 44m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Apr 21
SEA
SNN
17h 05m
Tue, May 8
SNN
SEA
18h 22m
Trip: 18 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
NBO
Good 6.0

Crew was very nice and helpful

Did not get the seat according to the seatplan.I booked exit row seat 30..got 30..but exit row was 28.

PRG
LHR
Okay 4.6

The crew was sick and one lady kept running to the bathroom?!? The plane was old...

LHR
LYS
Mediocre 3.3

Safe landing

Was charged 65 pounds for checking one bag. This was a big news to me. BA claims it was because I booked through Kayak. Would not have booked the flight. Luggage cost is almost superior to flight cost. Forced me to check my overhead luggage. Flight was delayed one hour because we had to go back to gate to rebLANCE WEIGHT

LHR
MAD
Good 6.0

It was just ok.

Nothing was complimentary.

LHR
SEA
Excellent 8.6

The crew and the plan and the service were all top notch. However, their new policy as of 1/1/2018 in which they even charge for coffee and water seems very misplaced and excessive.

Their new policy as of 1/1/2018 in which they even charge for coffee and water on short flights (Madrid to London in this case) seems excessive, even in this day of ala carte flying. :-(

Tue, Apr 3
SEA
SNN
22h 21m
Tue, Apr 17
SNN
SEA
29h 34m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Mar 25
SEA
SNN
18h 55m
Mon, Apr 2
SNN
SEA
34h 30m
Trip: 9 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
SEA
Excellent 8.6

The crew and the plan and the service were all top notch. However, their new policy as of 1/1/2018 in which they even charge for coffee and water seems very misplaced and excessive.

Their new policy as of 1/1/2018 in which they even charge for coffee and water on short flights (Madrid to London in this case) seems excessive, even in this day of ala carte flying. :-(

LHR
LYS
Mediocre 3.3

Safe landing

Was charged 65 pounds for checking one bag. This was a big news to me. BA claims it was because I booked through Kayak. Would not have booked the flight. Luggage cost is almost superior to flight cost. Forced me to check my overhead luggage. Flight was delayed one hour because we had to go back to gate to rebLANCE WEIGHT

MAD
LHR
Okay 5.3

old plane, no entertainment, had to pay for non alcohol drinks

IAH
LHR
Excellent 8.0

Crew on the flight home was extremely friendly! Flights were all on time. Food service and drinks were very good. Great in flight entertainment options

Customer service personnel over the phone was so rude to me. Flight crew on the flight from dfw to lhr wasn’t friendly at all.

LHR
BWI
Okay 4.0

Quick boarding

Service was poor, flight attendants were rude.

Tue, Apr 17
SEA
SNN
14h 20m
Tue, Apr 24
SNN
SEA
18h 49m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Jul 24
SEA
SNN
12h 55m
Tue, Jul 31
SNN
SEA
17h 49m
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
IAH
LHR
Excellent 8.0

Crew on the flight home was extremely friendly! Flights were all on time. Food service and drinks were very good. Great in flight entertainment options

Customer service personnel over the phone was so rude to me. Flight crew on the flight from dfw to lhr wasn’t friendly at all.

LHR
LYS
Mediocre 3.3

Safe landing

Was charged 65 pounds for checking one bag. This was a big news to me. BA claims it was because I booked through Kayak. Would not have booked the flight. Luggage cost is almost superior to flight cost. Forced me to check my overhead luggage. Flight was delayed one hour because we had to go back to gate to rebLANCE WEIGHT

PRG
LHR
Okay 4.6

The crew was sick and one lady kept running to the bathroom?!? The plane was old...

ZRH
LHR
Excellent 10.0

Flight was onetime, food on the flight was for purchase but it was vert nice, boarding was onetime and smooth.

LHR
MAD
Good 6.0

It was just ok.

Nothing was complimentary.

Thu, May 24
SEA
SNN
23h 23m
Sat, Jun 2
SNN
SEA
31h 50m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Jul 24
SEA
SNN
18h 40m
Mon, Jul 30
SNN
SEA
35h 24m
Trip: 7 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 15476 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
NBO
Good 6.0

Crew was very nice and helpful

Did not get the seat according to the seatplan.I booked exit row seat 30..got 30..but exit row was 28.

FAO
LGW
Mediocre 3.6

nice employees

for the second time on this flight, the onboard devise for credit cards would not accept mine. this is the same card i used to book the flight. i complained to british air last time but they obviously haven't fixed the problem. there seems to be a problem using american credit cards these flights. is is a problem because nothing is free. luck;y a flight attendant did feel bad about it and gave me a glass of water

LHR
BWI
Okay 4.0

Quick boarding

Service was poor, flight attendants were rude.

ZRH
LHR
Excellent 10.0

Flight was onetime, food on the flight was for purchase but it was vert nice, boarding was onetime and smooth.

LHR
LYS
Mediocre 3.3

Safe landing

Was charged 65 pounds for checking one bag. This was a big news to me. BA claims it was because I booked through Kayak. Would not have booked the flight. Luggage cost is almost superior to flight cost. Forced me to check my overhead luggage. Flight was delayed one hour because we had to go back to gate to rebLANCE WEIGHT

Fri, Apr 6
SEA
SNN
17h 05m
Sun, Apr 15
SNN
SEA
16h 04m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Show more results

Seattle/Tacoma Intl to Shannon Flight Information

Flights Arrive in Shannon
Flights Depart from Seattle/Tacoma Intl
Flight Price $617
Distance 4488 miles
Airlines British Airways, Aer Lingus, Delta
*
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.