$408+ Cheap flights from San Francisco (SFO) to Shannon (SNN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SNN
Jun 15 — Jun 221
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Shannon with Cheapflights
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Best
Last-minute
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Cheapest flights from San Francisco to ShannonExplore the most affordable flight options available from San Francisco to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 16, 2026.
Explore the most affordable flight options available from San Francisco to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 16, 2026.
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/111:30 am
SFO
- SNN
1 stop15h 40m
Delta
Wed 9/161:05 pm
SNN
- SFO
1 stop17h 50m
Delta
Deal found 5/11![Delta logo]()
$753
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:05 am
SFO
- SNN
2 stops19h 10m
United Airlines
Tue 9/159:30 am
SNN
- SFO
1 stop15h 49m
United Airlines
Deal found 5/13![United Airlines logo]()
$758
This United Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 am
SFO
- SNN
1 stop17h 30m
United Airlines
Thu 8/279:30 am
SNN
- SFO
1 stop17h 42m
United Airlines
Deal found 5/11![United Airlines logo]()
$770
This Delta deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/171:10 pm
SFO
- SNN
1 stop14h 00m
Delta
Mon 8/311:05 pm
SNN
- SFO
1 stop20h 19m
Delta
Deal found 5/14![Delta logo]()
$820
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:23 am
SFO
- SNN
2 stops15h 07m
United Airlines
Mon 8/3112:30 pm
SNN
- SFO
1 stop14h 44m
United Airlines
Deal found 5/13![United Airlines logo]()
$821
This KLM deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:05 pm
SFO
- SNN
2 stops31h 05m
Multiple Airlines
Mon 8/311:05 pm
SNN
- SFO
1 stop16h 09m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$825
This Delta deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2910:35 pm
SFO
- SNN
1 stop28h 35m
Delta
Sat 9/191:05 pm
SNN
- SFO
1 stop16h 09m
Delta
Deal found 5/13![Delta logo]()
$826
This United Airlines deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/28:15 am
SFO
- SNN
1 stop15h 15m
United Airlines
Wed 8/199:30 am
SNN
- SFO
1 stop16h 54m
United Airlines
Deal found 5/12![United Airlines logo]()
$827
This KLM deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/28:00 pm
SFO
- SNN
2 stops31h 10m
Multiple Airlines
Wed 8/191:05 pm
SNN
- SFO
1 stop15h 01m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$831
Best flights from San Francisco to ShannonDiscover carefully curated flight deals from San Francisco to Shannon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 16, 2026.
Discover carefully curated flight deals from San Francisco to Shannon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 16, 2026.
This United Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/259:00 pm
SFO
- SNN
2 stops26h 30m
United Airlines
Wed 8/199:30 am
SNN
- SFO
1 stop14h 05m
United Airlines
Deal found 5/14![United Airlines logo]()
$831
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/31:10 pm
SFO
- SNN
1 stop14h 00m
Delta
Tue 8/181:05 pm
SNN
- SFO
1 stop15h 01m
Delta
Deal found 5/12![Delta logo]()
$847
This KLM deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/36:06 am
SFO
- SNN
2 stops21h 04m
Multiple Airlines
Tue 8/181:05 pm
SNN
- SFO
1 stop15h 01m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$852
This KLM deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/257:00 am
SFO
- SNN
1 stop20h 10m
KLM
Fri 6/191:05 pm
SNN
- SFO
2 stops18h 53m
KLM
Deal found 5/13![KLM logo]()
$940
This KLM deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/28:00 pm
SFO
- SNN
2 stops31h 10m
Multiple Airlines
Tue 8/111:05 pm
SNN
- SFO
1 stop17h 28m
Multiple Airlines
Deal found 5/12![Multiple Airlines logo]()
$852
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/211:50 pm
SFO
- SNN
1 stop27h 20m
Delta
Tue 8/111:05 pm
SNN
- SFO
1 stop15h 01m
Delta
Deal found 5/12![Delta logo]()
$854
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1011:59 pm
SFO
- SNN
2 stops23h 31m
United Airlines
Sat 8/89:30 am
SNN
- SFO
1 stop23h 02m
United Airlines
Deal found 5/13![United Airlines logo]()
$940
This KLM deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:00 am
SFO
- SNN
1 stop20h 10m
KLM
Tue 7/141:05 pm
SNN
- SFO
1 stop17h 35m
KLM
Deal found 5/14![KLM logo]()
$956
This KLM deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1511:37 am
SFO
- SNN
2 stops15h 33m
Multiple Airlines
Mon 7/271:05 pm
SNN
- SFO
1 stop19h 48m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$896
This United Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:15 am
SFO
- SNN
2 stops20h 00m
United Airlines
Fri 6/1912:30 pm
SNN
- SFO
2 stops17h 07m
United Airlines
Deal found 5/11![United Airlines logo]()
$940
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:05 am
SFO
- SNN
2 stops19h 10m
United Airlines
Wed 6/179:30 am
SNN
- SFO
2 stops16h 00m
United Airlines
Deal found 5/13![United Airlines logo]()
$945
Last-minute flights from San Francisco to ShannonDiscover last-minute flight deals from San Francisco to Shannon. Data last updated May 16, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Shannon. Data last updated May 16, 2026 and is based on user searches.
This KLM deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:25 pm
SFO
- SNN
2 stops37h 45m
Multiple Airlines
Thu 5/281:05 pm
SNN
- SFO
2 stops17h 16m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$946
This KLM deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/211:25 pm
SFO
- SNN
2 stops37h 45m
KLM
Sat 5/301:05 pm
SNN
- SFO
2 stops34h 53m
KLM
Deal found 5/15![KLM logo]()
$952
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/259:10 am
SFO
- SNN
1 stop18h 00m
Delta
Fri 6/191:05 pm
SNN
- SFO
1 stop17h 30m
Delta
Deal found 5/11![Delta logo]()
$935
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:15 am
SFO
- SNN
2 stops17h 15m
United Airlines
Fri 6/1912:30 pm
SNN
- SFO
1 stop14h 58m
United Airlines
Deal found 5/13![United Airlines logo]()
$940
This United Airlines deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1011:15 am
SFO
- SNN
1 stop15h 00m
United Airlines
Wed 6/179:30 am
SNN
- SFO
1 stop13h 58m
United Airlines
Deal found 5/13![United Airlines logo]()
$941
This United Airlines deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1112:35 pm
SFO
- SNN
1 stop13h 40m
United Airlines
Thu 6/189:30 am
SNN
- SFO
1 stop17h 54m
United Airlines
Deal found 5/14![United Airlines logo]()
$1,010
This United Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1311:30 pm
SFO
- SNN
1 stop24h 00m
United Airlines
Tue 6/239:30 am
SNN
- SFO
1 stop13h 58m
United Airlines
Deal found 5/11![United Airlines logo]()
$1,040
This United Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/156:05 am
SFO
- SNN
1 stop17h 25m
United Airlines
Wed 6/249:30 am
SNN
- SFO
1 stop21h 32m
United Airlines
Deal found 5/11![United Airlines logo]()
$1,033
This United Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/158:15 am
SFO
- SNN
2 stops15h 15m
United Airlines
Thu 6/259:30 am
SNN
- SFO
1 stop16h 48m
United Airlines
Deal found 5/11![United Airlines logo]()
$1,038
One-way flights from San Francisco to ShannonSearch for one-way flight options from San Francisco to Shannon. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
Search for one-way flight options from San Francisco to Shannon. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/610:56 pm
SFO
- SNN
3 stops41h 19m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$408
This Cheapflightsfares deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/255:35 pm
SFO
- SNN
2 stops19h 00m
Aer Lingus
Deal found 5/11![Aer Lingus logo]()
$437
This Cheapflightsfares deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:35 pm
SFO
- SNN
2 stops19h 00m
Aer Lingus
Deal found 5/15![Aer Lingus logo]()
$453
This Cheapflightsfares deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/95:40 pm
SFO
- SNN
2 stops18h 55m
Aer Lingus
Deal found 5/13![Aer Lingus logo]()
$463
This Kiwi.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/223:26 pm
SFO
- SNN
3 stops44h 54m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$528
This Kiwi.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/216:00 am
SFO
- SNN
3 stops50h 40m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$539
This FlightHub deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/910:33 am
SFO
- SNN
1 stop15h 52m
Multiple Airlines
Deal found 5/14![Multiple Airlines logo]()
$564
This KAYAK deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/256:00 am
SFO
- SNN
1 stop16h 00m
Multiple Airlines
Deal found 5/11![Multiple Airlines logo]()
$566
This BusinessClass deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:15 am
SFO
- SNN
1 stop15h 45m
Aer Lingus
Deal found 5/10![Aer Lingus logo]()
$575
This Kiwi.com deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/101:20 pm
SFO
- SNN
3 stops40h 05m
Multiple Airlines
Deal found 5/10![Multiple Airlines logo]()
$591
Find flight deals from San Francisco to Shannon
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Shannon (SNN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $753 (Delta) |
One-way from | $408 (Kiwi.com) |
Popular in | May |
Cheapest in | January |
Average price | $1,082 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Shannon that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 16, 2026.
Use the filters below to find and compare flights from San Francisco to Shannon that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Sat 7/25
9:00 pm-7:30 am
2 stops26h 30m
Shannon
Wed 8/19
9:30 am-3:35 pm
1 stop14h 05m
$831
Quickest round-trip
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Mon 8/3
1:10 pm-11:10 am
1 stop14h 00m
Shannon
Tue 8/18
1:05 pm-8:06 pm
1 stop15h 01m
$847
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Mon 8/3
6:06 am-11:10 am
2 stops21h 04m
Shannon
Tue 8/18
1:05 pm-8:06 pm
1 stop15h 01m
$852
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Sun 8/2
8:00 pm-11:10 am
2 stops31h 10m
Shannon
Tue 8/11
1:05 pm-10:33 pm
1 stop17h 28m
$852
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Sun 8/2
11:50 pm-11:10 am
1 stop27h 20m
Shannon
Tue 8/11
1:05 pm-8:06 pm
1 stop15h 01m
$854
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Wed 7/15
11:37 am-11:10 am
2 stops15h 33m
Shannon
Mon 7/27
1:05 pm-12:53 am
1 stop19h 48m
$896
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Mon 5/25
7:00 am-11:10 am
1 stop20h 10m
Shannon
Fri 6/19
1:05 pm-11:58 pm
2 stops18h 53m
$940
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Fri 7/10
11:59 pm-7:30 am
2 stops23h 31m
Shannon
Sat 8/8
9:30 am-12:32 am
1 stop23h 02m
$940
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Mon 5/25
6:15 am-10:15 am
2 stops20h 00m
Shannon
Fri 6/19
12:30 pm-9:37 pm
2 stops17h 07m
$940
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Wed 6/10
7:05 am-10:15 am
2 stops19h 10m
Shannon
Wed 6/17
9:30 am-5:30 pm
2 stops16h 00m
$945
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from San Francisco to Shannon
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Shannon in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Francisco-Shannon, Clare flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Shannon, Clare flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Shannon, Clare flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Shannon, Clare flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Shannon, Clare flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from San Francisco to Shannon
Have a flexible travel schedule? Discover the best time to fly to Shannon from San Francisco with our price prediction graph.
SFO-SNN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Shannon
What is the cheapest month to book a flight from San Francisco to Shannon, Clare?
Currently, January is the cheapest month in which you can book a flight from San Francisco to Shannon, Clare (average of $602). Flying from San Francisco to Shannon, Clare in May is currently the most expensive (average of $1,082). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from San Francisco to Shannon, Clare?
Reviews of airlines servicing Shannon
Get insights into the airlines that provide service to Shannon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Shannon. Reviews last updated May 16, 2026.
See what other customers who have flown with United Airlines,American Airlines, andBritish Airways from San Francisco to Shannon have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Crew
8.1
Overall
7.4
Food
6.6
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Boarding
7.7
Crew
8.1
Overall
7.4
Food
6.6
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Boarding
7.7
Crew
8.1
Overall
7.4
Food
6.6
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Boarding
7.7
Crew
8.1
Overall
7.4
Food
6.6
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Related info for your journey
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San Francisco and Shannon flights
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Top 3 airlines flying from San Francisco to Shannon
Discover the top 3 airlines that operate flights from San Francisco to Shannon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$533 | Average$684 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$591 | Average$977 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$593 | Average$961 | FlexibilityNo cancel fee | On-time70% |