$351+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SNN
May 28 — Jun 41
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Shannon with Cheapflights
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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 April 28, 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 April 28, 2026.
This KLM deal was found by Cheapflights users on 4/25. 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.
Tue 9/811:30 am
SFO
- SNN
1 stop15h 40m
KLM
Wed 9/161:05 pm
SNN
- SFO
1 stop16h 09m
KLM
Deal found 4/25![KLM logo]()
$753
This United Airlines deal was found by Cheapflights users on 4/23. 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 9/110:50 pm
SFO
- SNN
2 stops24h 40m
United Airlines
Tue 9/1512:30 pm
SNN
- SFO
1 stop15h 33m
United Airlines
Deal found 4/23![United Airlines logo]()
$758
This United Airlines deal was found by Cheapflights users on 4/24. 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 8/2310:11 am
SFO
- SNN
1 stop13h 19m
United Airlines
Fri 8/289:30 am
SNN
- SFO
1 stop17h 14m
United Airlines
Deal found 4/24![United Airlines logo]()
$770
This United Airlines deal was found by Cheapflights users on 4/24. 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 8/248:10 am
SFO
- SNN
2 stops15h 20m
United Airlines
Thu 8/279:30 am
SNN
- SFO
2 stops16h 01m
United Airlines
Deal found 4/24![United Airlines logo]()
$775
This United Airlines deal was found by Cheapflights users on 4/24. 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 8/2211:30 pm
SFO
- SNN
1 stop24h 00m
United Airlines
Wed 8/269:30 am
SNN
- SFO
1 stop14h 00m
United Airlines
Deal found 4/24![United Airlines logo]()
$776
This Delta deal was found by Cheapflights users on 4/25. 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.
Thu 9/1011:30 am
SFO
- SNN
1 stop15h 40m
Delta
Tue 9/151:05 pm
SNN
- SFO
1 stop16h 09m
Delta
Deal found 4/25![Delta logo]()
$803
This United Airlines deal was found by Cheapflights users on 4/26. 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 9/19:07 pm
SFO
- SNN
2 stops26h 23m
United Airlines
Mon 9/149:30 am
SNN
- SFO
1 stop14h 00m
United Airlines
Deal found 4/26![United Airlines logo]()
$808
This KLM deal was found by Cheapflights users on 4/25. 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 9/711:30 am
SFO
- SNN
1 stop15h 40m
KLM
Mon 9/141:05 pm
SNN
- SFO
2 stops35h 18m
KLM
Deal found 4/25![KLM logo]()
$813
This KLM deal was found by Cheapflights users on 4/23. 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.
Tue 9/12:20 pm
SFO
- SNN
1 stop12h 50m
Multiple Airlines
Tue 9/151:05 pm
SNN
- SFO
1 stop17h 50m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$815
This United Airlines deal was found by Cheapflights users on 4/24. 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 8/2310:11 am
SFO
- SNN
1 stop13h 19m
United Airlines
Sun 8/309:30 am
SNN
- SFO
1 stop14h 00m
United Airlines
Deal found 4/24![United Airlines logo]()
$820
This United Airlines deal was found by Cheapflights users on 4/24. 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 8/235:00 am
SFO
- SNN
2 stops18h 30m
United Airlines
Sat 8/2912:30 pm
SNN
- SFO
2 stops17h 14m
United Airlines
Deal found 4/24![United Airlines logo]()
$825
This United Airlines deal was found by Cheapflights users on 4/24. 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 8/2211:30 pm
SFO
- SNN
1 stop24h 00m
United Airlines
Mon 8/319:30 am
SNN
- SFO
1 stop14h 00m
United Airlines
Deal found 4/24![United Airlines logo]()
$826
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 April 28, 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 April 28, 2026.
This United Airlines deal was found by Cheapflights users on 4/23. 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 9/111:08 pm
SFO
- SNN
2 stops24h 22m
United Airlines
Tue 9/159:30 am
SNN
- SFO
2 stops16h 12m
United Airlines
Deal found 4/23![United Airlines logo]()
$758
This Delta deal was found by Cheapflights users on 4/27. 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 9/12:20 pm
SFO
- SNN
1 stop12h 50m
Delta
Wed 9/161:05 pm
SNN
- SFO
1 stop20h 19m
Delta
Deal found 4/27![Delta logo]()
$815
This United Airlines deal was found by Cheapflights users on 4/25. 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 9/75:00 am
SFO
- SNN
2 stops18h 30m
United Airlines
Thu 9/179:30 am
SNN
- SFO
2 stops16h 18m
United Airlines
Deal found 4/25![United Airlines logo]()
$758
This United Airlines deal was found by Cheapflights users on 4/24. 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 8/2212:55 am
SFO
- SNN
1 stop22h 35m
United Airlines
Thu 8/279:30 am
SNN
- SFO
1 stop15h 49m
United Airlines
Deal found 4/24![United Airlines logo]()
$770
This United Airlines deal was found by Cheapflights users on 4/27. 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 9/227:05 am
SFO
- SNN
2 stops19h 10m
United Airlines
Wed 9/3012:30 pm
SNN
- SFO
2 stops19h 57m
United Airlines
Deal found 4/27![United Airlines logo]()
$775
This United Airlines deal was found by Cheapflights users on 4/27. 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 9/216:05 am
SFO
- SNN
1 stop17h 25m
United Airlines
Wed 9/3012:30 pm
SNN
- SFO
2 stops20h 46m
United Airlines
Deal found 4/27![United Airlines logo]()
$775
This United Airlines deal was found by Cheapflights users on 4/27. 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 9/221:00 pm
SFO
- SNN
1 stop13h 15m
United Airlines
Tue 9/2912:30 pm
SNN
- SFO
2 stops16h 50m
United Airlines
Deal found 4/27![United Airlines logo]()
$775
This United Airlines deal was found by Cheapflights users on 4/24. 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 8/265:05 am
SFO
- SNN
1 stop18h 25m
United Airlines
Sat 8/299:30 am
SNN
- SFO
1 stop14h 00m
United Airlines
Deal found 4/24![United Airlines logo]()
$820
This United Airlines deal was found by Cheapflights users on 4/24. 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 8/256:05 am
SFO
- SNN
1 stop17h 25m
United Airlines
Sun 8/309:30 am
SNN
- SFO
1 stop14h 00m
United Airlines
Deal found 4/24![United Airlines logo]()
$820
Last-minute flights from San Francisco to ShannonDiscover last-minute flight deals from San Francisco to Shannon. Data last updated April 28, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Shannon. Data last updated April 28, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 4/25. 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 4/2910:10 am
SFO
- SNN
2 stops16h 05m
United Airlines
Tue 5/512:30 pm
SNN
- SFO
1 stop15h 53m
United Airlines
Deal found 4/25![United Airlines logo]()
$877
This United Airlines deal was found by Cheapflights users on 4/27. 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 5/116:00 am
SFO
- SNN
1 stop20h 15m
United Airlines
Tue 5/1912:30 pm
SNN
- SFO
1 stop15h 00m
United Airlines
Deal found 4/27![United Airlines logo]()
$906
This United Airlines deal was found by Cheapflights users on 4/27. 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 5/116:45 am
SFO
- SNN
2 stops19h 30m
United Airlines
Sat 5/239:30 am
SNN
- SFO
1 stop14h 05m
United Airlines
Deal found 4/27![United Airlines logo]()
$911
This United Airlines deal was found by Cheapflights users on 4/27. 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 5/117:15 am
SFO
- SNN
1 stop19h 00m
United Airlines
Thu 5/2112:30 pm
SNN
- SFO
1 stop28h 39m
United Airlines
Deal found 4/27![United Airlines logo]()
$914
This United Airlines deal was found by Cheapflights users on 4/27. 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 5/1211:55 pm
SFO
- SNN
1 stop26h 20m
United Airlines
Mon 5/259:30 am
SNN
- SFO
1 stop14h 05m
United Airlines
Deal found 4/27![United Airlines logo]()
$915
This KLM deal was found by Cheapflights users on 4/26. 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 5/245:50 am
SFO
- SNN
2 stops21h 20m
Multiple Airlines
Tue 6/91:05 pm
SNN
- SFO
1 stop37h 33m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$841
This KLM deal was found by Cheapflights users on 4/26. 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 5/247:00 am
SFO
- SNN
1 stop20h 10m
KLM
Mon 6/11:05 pm
SNN
- SFO
2 stops19h 07m
KLM
Deal found 4/26![KLM logo]()
$896
This Delta deal was found by Cheapflights users on 4/23. 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 stop19h 39m
Delta
Deal found 4/23![Delta logo]()
$847
This KLM deal was found by Cheapflights users on 4/23. 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 5/255:50 am
SFO
- SNN
2 stops21h 20m
Multiple Airlines
Fri 6/191:05 pm
SNN
- SFO
1 stop19h 39m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$852
This KLM deal was found by Cheapflights users on 4/23. 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.
Fri 5/2911:31 am
SFO
- SNN
1 stop15h 39m
Multiple Airlines
Tue 6/91:05 pm
SNN
- SFO
1 stop17h 40m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$891
This Delta deal was found by Cheapflights users on 4/23. 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 5/3010:00 pm
SFO
- SNN
1 stop29h 10m
Delta
Tue 6/91:05 pm
SNN
- SFO
1 stop17h 40m
Delta
Deal found 4/23![Delta logo]()
$855
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 April 28, 2026.
Search for one-way flight options from San Francisco to Shannon. Find affordable one-way fares based on user searches. Data last updated April 28, 2026.
This Delta deal was found by Cheapflights users on 4/27. 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 9/69:00 am
SFO
- SNN
1 stop18h 10m
Delta
Deal found 4/27![Delta logo]()
$351
This United Airlines deal was found by Cheapflights users on 4/26. 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 9/710:50 pm
SFO
- SNN
2 stops24h 40m
United Airlines
Deal found 4/26![United Airlines logo]()
$357
This United Airlines deal was found by Cheapflights users on 4/27. 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 9/111:30 pm
SFO
- SNN
1 stop24h 00m
United Airlines
Deal found 4/27![United Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 4/27. 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 9/410:35 pm
SFO
- SNN
2 stops24h 55m
United Airlines
Deal found 4/27![United Airlines logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 9/29:05 pm
SFO
- SNN
3 stops39h 20m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$427
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 9/69:05 pm
SFO
- SNN
3 stops30h 20m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$428
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Tue 9/19:05 pm
SFO
- SNN
3 stops39h 15m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$433
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 7/1310:15 am
SFO
- SNN
2 stops39h 15m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$442
This Booking.com deal was found by Cheapflights users on 4/23. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/137:30 pm
SFO
- SNN
1 stop17h 05m
Aer Lingus
Deal found 4/23![Aer Lingus logo]()
$445
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
Thu 9/35:35 pm
SFO
- SNN
2 stops18h 15m
Multiple Airlines
Deal found 4/27![Multiple Airlines logo]()
$458
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 April 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $753 (KLM) |
One-way from | $351 (Delta) |
Popular in | May |
Cheapest in | January |
Average price | $794 |
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 April 28, 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
Tue 9/1
11:08 pm-7:30 am
2 stops24h 22m
Shannon
Tue 9/15
9:30 am-5:42 pm
2 stops16h 12m
$758
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Mon 9/7
5:00 am-7:30 am
2 stops18h 30m
Shannon
Thu 9/17
9:30 am-5:48 pm
2 stops16h 18m
$758
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Sat 8/22
12:55 am-7:30 am
1 stop22h 35m
Shannon
Thu 8/27
9:30 am-5:19 pm
1 stop15h 49m
$770
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Tue 9/22
7:05 am-10:15 am
2 stops19h 10m
Shannon
Wed 9/30
12:30 pm-12:27 am
2 stops19h 57m
$775
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Mon 9/21
6:05 am-7:30 am
1 stop17h 25m
Shannon
Wed 9/30
12:30 pm-1:16 am
2 stops20h 46m
$775
Quickest round-trip
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Tue 9/22
1:00 pm-10:15 am
1 stop13h 15m
Shannon
Tue 9/29
12:30 pm-9:20 pm
2 stops16h 50m
$775
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Tue 9/1
2:20 pm-11:10 am
1 stop12h 50m
Shannon
Wed 9/16
1:05 pm-1:24 am
1 stop20h 19m
$815
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Wed 8/26
5:05 am-7:30 am
1 stop18h 25m
Shannon
Sat 8/29
9:30 am-3:30 pm
1 stop14h 00m
$820
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Tue 8/25
6:05 am-7:30 am
1 stop17h 25m
Shannon
Sun 8/30
9:30 am-3:30 pm
1 stop14h 00m
$820
Cheapest one-way
San FranciscoShannon
SFO - SNN
SFOSNN
San Francisco
Mon 9/7
9:00 am-11:10 am
1 stop18h 10m
$351
Showing 1-10 of 17 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 April.
| 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
How far ahead should I book a flight from San Francisco to Shannon, Clare?
The best time to book flights from San Francisco to Shannon, Clare is 43 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 April 28, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican Airlines 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.
Comfort
7.9
Boarding
8.1
Food
7.2
Overall
7.9
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Boarding
8.1
Food
7.2
Overall
7.9
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Boarding
8.1
Food
7.2
Overall
7.9
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Boarding
8.1
Food
7.2
Overall
7.9
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Comfort
7.9
Boarding
8.1
Food
7.2
Overall
7.9
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Shannon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Shannon?
Book flights to Shannon if you plan to visit one of these locationsEnnis
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San Francisco and Shannon flights
Browse other San Francisco and Shannon flight options. Last updated on April 28, 2026.
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Other flights to Shannon
Explore flights to Shannon departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 28, 2026.
Top 4 airlines flying from San Francisco to Shannon
Discover the top 4 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 April 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$468 | Average$681 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$591 | Average$976 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$593 | Average$961 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$664 | Average$1,146 | FlexibilityNo cancel fee | On-timeN/A |