Find Cheap Flights from San Francisco to Shannon (SFO - SNN)

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Sat 11/25
Sat 12/2
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Good to Know

Low Season:
October
Best time to beat the crowds
2%
expected price decrease
High Season:
July
Most popular time to fly
7%
expected price increase
Average Price:
$1281
(avg. price over the last 2 weeks)
Good Deal:
$930
or less (round trip)

When to Book Flights from San Francisco to Shannon

Average price per month
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 $930 or less.
The cheapest flight from San Francisco to Shannon was found 90 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is October.
Morning departure is around 11% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking San Francisco to Shannon Flights

How long does a flight from San Francisco to Shannon take?
An average nonstop flight takes 14h 10m, covering a distance of 5035 miles.
Which airlines provide the cheapest flights from San Francisco to Shannon?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($472), Multiple Airlines ($691) and British Airways ($1135).
Do I need a passport to fly between San Francisco and Shannon?
Yes.

Book cheap flights from San Francisco to Shannon (round-trip)

Airports
Origin
San Francisco
$472
only
$472
Destination
Shannon
$472
only
$472
Wed, May 9
SFO
SNN
15h 40m
Wed, May 16
SNN
SFO
20h 17m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Jan 11
SFO
SNN
22h 15m
Sun, Jan 21
SNN
SFO
19h 04m
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Mar 14
SFO
SNN
16h 40m
Mon, Mar 26
SNN
SFO
17h 40m
$1135
Trip: 13 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13493 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LAX
LHR
Okay 4.3

The boarding started late (30 min before supposed departure), took much longer than expected because we needed to use the bus. Then we waited another hour on the tarmac. We were told it would be only a few minutes. Then we were told we would make up for the lost time, but that wasn't true and an additional half hour was lost on a holding pattern at LHR. We missed our connection. The instructions were unclear on what to do (contradiction between flight attendants and ground crew). By the time we picked up new boarding passes, we had already missed that flight as well and had to go to the customer service, which took another 45 min. Flight entertainment didn't work the first hour. There was a high pitched beeping sound during the whole flight (not the regular airplane noise).

LIS
LHR
Mediocre 2.0

Because of a problem at the car rental place we were not able to check our bags until 50 minutes before the flight. British Airways would not take the bags and we missed our flights Neither webjet who had booked our flight or British Airways would help us figure out a new flight. We had to buy a whole new flight.

LHR
MUC
Good 6.0

The boarding was prompt. The ground staff were helpful in ensuring that my through luggage had been loaded onto the connecting flight

There was no in flight entertainment, not even a water service after I boarded. They offered a meal purchase but since it was a short flight a meal wasn't necessary. At least a free drink of water should have been offered to the passengers

LHR
SJC
Good 6.3

delay too long

DFW
LHR
Excellent 9.3

Food, service, friendly, helpful Cabin crew made it a very positive experience

Entertainment system is really ancient, it's lagging other airlines in terms of display size & quality, user interface and programming

Wed, Jan 10
SFO
SNN
14h 10m
Wed, Jan 24
SNN
SFO
15h 30m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Dec 26
SFO
SNN
14h 20m
Sat, Dec 30
SNN
SFO
21h 54m
$1644
Trip: 5 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 3762 reviews
Overall
7.6
Boarding
7.7
Comfort
7.3
Crew
8.0
Entertainment
7.0
Food
6.9
BRU
DUB
Good 6.6

I loved that the trip was relatively short and uneventful. The food was adequate, but nothing to brag about and very little. The hostesses were nice,better than last time. The price was right on, mostly for a trip of under 15 hours...when usually it is 20h with a stopover.

On the way over, I couldnt get water. The trolley didn't come by, and I had to "leg-over" my sleeping neighbor to get a glass of water fo the back reserve. The TV wasn't working; the remote was dead. As it was a night flight, it didn't matter tt much for me, but it should've been working. The passengers could have been spread out better as there were completely empty middle rows. It would have helped with comfort.

DUB
EWR
Excellent 10.0

Excellent service from counter in both Newark and Dublin. Cabin crew was very attentive and complimentary food and beverage was just great!

SNN
JFK
Okay 5.3

Boarding Gate crew were good.

Seat cushions are worn out. Need new foam. Hostesses spent more time talking to each other during food and beverage service than to the passenger.

DUB
BOS
Excellent 9.3

Crew and food were excellent. Very happy to accommodate my husbands health issue.

Choice of movies and tv shows limited and lacked variety.

DUB
FRA
Mediocre 3.3

It got me there.

Had to pay for sodas.

Thu, Nov 30
SFO
SNN
23h 10m
Fri, Dec 8
SNN
SFO
44h 30m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Dec 1
SFO
SNN
15h 00m
Sun, Dec 3
SNN
SFO
21h 18m
Trip: 3 days
Overall 0.0 Poor
Based on 0 reviews
Wed, May 9
SFO
SNN
14h 27m
Mon, May 28
SNN
SFO
18h 49m
Trip: 20 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Dec 24
SFO
SNN
45h 25m
Fri, Jan 5
SNN
SFO
21h 11m
$1375
Trip: 13 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13493 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
SFO
LHR
Excellent 10.0

Everything

LAX
LHR
Okay 4.3

The boarding started late (30 min before supposed departure), took much longer than expected because we needed to use the bus. Then we waited another hour on the tarmac. We were told it would be only a few minutes. Then we were told we would make up for the lost time, but that wasn't true and an additional half hour was lost on a holding pattern at LHR. We missed our connection. The instructions were unclear on what to do (contradiction between flight attendants and ground crew). By the time we picked up new boarding passes, we had already missed that flight as well and had to go to the customer service, which took another 45 min. Flight entertainment didn't work the first hour. There was a high pitched beeping sound during the whole flight (not the regular airplane noise).

LHR
MUC
Good 6.0

The boarding was prompt. The ground staff were helpful in ensuring that my through luggage had been loaded onto the connecting flight

There was no in flight entertainment, not even a water service after I boarded. They offered a meal purchase but since it was a short flight a meal wasn't necessary. At least a free drink of water should have been offered to the passengers

TLV
LHR
Good 6.0

The new flight procedures informational film at the beginning of the flight (BA/Comic Relief)

The flight was to Heathrow which was not prepared to accept us at all. We waited 45 minutes in passport control. I expect BA to make sure the port of destination is prepared to receive its passengers

AUS
LHR
Excellent 8.0

I have no complaints about the flight. It was a full flight but we tooked off in time and food/ drinks service was prompt. Unfortunately I left my phone on the flight and I have not got it back yet, a full week later.

Fri, Dec 8
SFO
SNN
22h 04m
Fri, Dec 22
SNN
SFO
18h 25m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Dec 26
SFO
SNN
16h 35m
Fri, Jan 5
SNN
SFO
21h 11m
$1426
Trip: 11 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13493 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
FCO
LHR
Good 6.3

The flight we ended up taking was just fine. The crew was very nice, most of the food was good, and the seats were comfortable even in stowage.

Our flight was about 10 hours so we got 2 meals, 1 hot 1 cold. The hot meal had a vegetarian option and that was acceptable. The cold meal was a chicken salad sandwich with no other choices. As a vegetarian we tried to take off the chicken salad part and just eat the rest but that didn't leave much. Vegetarian options for all meals would have been nice.

LHR
SJC
Good 6.3

delay too long

TLV
LHR
Good 6.0

The new flight procedures informational film at the beginning of the flight (BA/Comic Relief)

The flight was to Heathrow which was not prepared to accept us at all. We waited 45 minutes in passport control. I expect BA to make sure the port of destination is prepared to receive its passengers

LHR
MUC
Good 6.0

The boarding was prompt. The ground staff were helpful in ensuring that my through luggage had been loaded onto the connecting flight

There was no in flight entertainment, not even a water service after I boarded. They offered a meal purchase but since it was a short flight a meal wasn't necessary. At least a free drink of water should have been offered to the passengers

SFO
LHR
Excellent 10.0

Everything

Sat, Dec 23
SFO
SNN
22h 25m
Fri, Jan 5
SNN
SFO
23h 20m
$1594
Trip: 14 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13493 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
SFO
LHR
Excellent 10.0

Everything

LHR
BWI
Okay 4.0

Nothing

Sitting near the bathroom. Felt BA should have paid us for the seats

LIS
LHR
Mediocre 2.0

Because of a problem at the car rental place we were not able to check our bags until 50 minutes before the flight. British Airways would not take the bags and we missed our flights Neither webjet who had booked our flight or British Airways would help us figure out a new flight. We had to buy a whole new flight.

DFW
LHR
Excellent 9.3

Food, service, friendly, helpful Cabin crew made it a very positive experience

Entertainment system is really ancient, it's lagging other airlines in terms of display size & quality, user interface and programming

LHR
MUC
Good 6.0

The boarding was prompt. The ground staff were helpful in ensuring that my through luggage had been loaded onto the connecting flight

There was no in flight entertainment, not even a water service after I boarded. They offered a meal purchase but since it was a short flight a meal wasn't necessary. At least a free drink of water should have been offered to the passengers

Mon, Dec 25
SFO
SNN
17h 25m
Fri, Jan 5
SNN
SFO
24h 32m
$1243
Trip: 12 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Dec 20
SFO
SNN
14h 20m
Thu, Jan 4
SNN
SFO
21h 31m
$2044
Trip: 16 days
7.4GoodShow reviews
Overall 7.4 Good
Based on 3762 reviews
Overall
7.6
Boarding
7.7
Comfort
7.3
Crew
8.0
Entertainment
7.0
Food
6.9
SNN
JFK
Okay 5.3

Boarding Gate crew were good.

Seat cushions are worn out. Need new foam. Hostesses spent more time talking to each other during food and beverage service than to the passenger.

DUB
LAX
Excellent 8.0

Crew was pleasant. Food was OK and service too. Boarding was fine.

The 4 hours wait before my connection, the extra security selection that got me all patted for the 2nd time.

DUB
EWR
Excellent 10.0

Excellent service from counter in both Newark and Dublin. Cabin crew was very attentive and complimentary food and beverage was just great!

FRA
DUB
Good 6.3

Flight attendants were excellent.

SFO
DUB
Excellent 8.0

Prompt Rebooking. The new schedule was better the original schedule with fewer connections.

My original flights from Dublin to London and London to Munich were cancelled. The booking agency Webjet did not inform me about the cancellation. I noticed changes to my schedule three days before the flight and requested a rebooking. The entire leg to Munich was rebooked by Webjet but again I had to call and ask for an update since they don't issue a second round of confirmation emails.

Mon, Dec 25
SFO
SNN
20h 40m
Thu, Jan 4
SNN
SFO
15h 35m
$1305
Trip: 11 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Dec 24
SFO
SNN
31h 15m
Thu, Jan 4
SNN
SFO
15h 35m
$1381
Trip: 12 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Dec 1
SFO
SNN
16h 15m
Fri, Dec 8
SNN
SFO
19h 30m
$2051
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13493 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
MUC
Good 6.0

The boarding was prompt. The ground staff were helpful in ensuring that my through luggage had been loaded onto the connecting flight

There was no in flight entertainment, not even a water service after I boarded. They offered a meal purchase but since it was a short flight a meal wasn't necessary. At least a free drink of water should have been offered to the passengers

TLV
LHR
Good 6.0

The new flight procedures informational film at the beginning of the flight (BA/Comic Relief)

The flight was to Heathrow which was not prepared to accept us at all. We waited 45 minutes in passport control. I expect BA to make sure the port of destination is prepared to receive its passengers

LAX
LHR
Okay 4.3

The boarding started late (30 min before supposed departure), took much longer than expected because we needed to use the bus. Then we waited another hour on the tarmac. We were told it would be only a few minutes. Then we were told we would make up for the lost time, but that wasn't true and an additional half hour was lost on a holding pattern at LHR. We missed our connection. The instructions were unclear on what to do (contradiction between flight attendants and ground crew). By the time we picked up new boarding passes, we had already missed that flight as well and had to go to the customer service, which took another 45 min. Flight entertainment didn't work the first hour. There was a high pitched beeping sound during the whole flight (not the regular airplane noise).

LHR
NCE
Okay 5.6

Nice crew, more leg room

Food and even sodas are not free anymore

LHR
TLV
Good 7.3

Freezing cold cabin

Tue, Dec 26
SFO
SNN
17h 00m
Thu, Jan 4
SNN
SFO
15h 35m
$1399
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Dec 20
SFO
SNN
17h 11m
Fri, Jan 5
SNN
SFO
21h 11m
$2109
Trip: 17 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13493 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
LHR
NCE
Okay 5.6

Nice crew, more leg room

Food and even sodas are not free anymore

SFO
LHR
Excellent 10.0

Everything

LIS
LHR
Mediocre 2.0

Because of a problem at the car rental place we were not able to check our bags until 50 minutes before the flight. British Airways would not take the bags and we missed our flights Neither webjet who had booked our flight or British Airways would help us figure out a new flight. We had to buy a whole new flight.

LHR
TLV
Good 7.3

Freezing cold cabin

LHR
BWI
Okay 4.0

Nothing

Sitting near the bathroom. Felt BA should have paid us for the seats

Sun, Dec 24
SFO
SNN
38h 15m
Sat, Dec 30
SNN
SFO
34h 30m
$2119
Trip: 7 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 13493 reviews
Overall
7.5
Boarding
7.6
Comfort
7.2
Crew
8.0
Entertainment
7.0
Food
6.9
TLV
LHR
Good 6.0

The new flight procedures informational film at the beginning of the flight (BA/Comic Relief)

The flight was to Heathrow which was not prepared to accept us at all. We waited 45 minutes in passport control. I expect BA to make sure the port of destination is prepared to receive its passengers

AUS
LHR
Excellent 8.0

I have no complaints about the flight. It was a full flight but we tooked off in time and food/ drinks service was prompt. Unfortunately I left my phone on the flight and I have not got it back yet, a full week later.

LIS
LHR
Mediocre 2.0

Because of a problem at the car rental place we were not able to check our bags until 50 minutes before the flight. British Airways would not take the bags and we missed our flights Neither webjet who had booked our flight or British Airways would help us figure out a new flight. We had to buy a whole new flight.

FCO
LHR
Good 6.3

The flight we ended up taking was just fine. The crew was very nice, most of the food was good, and the seats were comfortable even in stowage.

Our flight was about 10 hours so we got 2 meals, 1 hot 1 cold. The hot meal had a vegetarian option and that was acceptable. The cold meal was a chicken salad sandwich with no other choices. As a vegetarian we tried to take off the chicken salad part and just eat the rest but that didn't leave much. Vegetarian options for all meals would have been nice.

SFO
LHR
Excellent 10.0

Everything

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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.