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$308+ Cheap flights from Shannon (SNN) to San Francisco (SFO)

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SFO
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
1 adult, Economy
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Cheap flight deals from Shannon to San Francisco

Cheapest flights from Shannon to San Francisco
Explore the most affordable flight options available from Shannon to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.

This British Airways deal was found by Cheapflights users on 3/8. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:15 pm
SNN
-
SFO
2 stops30h 00m
British Airways
Mon 4/205:43 pm
SFO
-
SNN
2 stops18h 52m
British Airways
Deal found 3/8$721
This TravelUp deal was found by Cheapflights users on 3/8. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/222:30 pm
SNN
-
SFO
1 stop17h 29m
Multiple Airlines
Wed 4/291:45 pm
SFO
-
SNN
2 stops22h 50m
Multiple Airlines
Deal found 3/8$727
This American Airlines deal was found by Cheapflights users on 3/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/162:30 pm
SNN
-
SFO
2 stops30h 40m
American Airlines
Mon 4/207:05 am
SFO
-
SNN
1 stop14h 55m
American Airlines
Deal found 3/8$735
This American Airlines deal was found by Cheapflights users on 3/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/302:30 pm
SNN
-
SFO
1 stop17h 29m
American Airlines
Wed 5/65:30 am
SFO
-
SNN
2 stops15h 55m
American Airlines
Deal found 3/8$736
This American Airlines deal was found by Cheapflights users on 3/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/152:30 pm
SNN
-
SFO
1 stop17h 59m
American Airlines
Tue 5/269:40 pm
SFO
-
SNN
1 stop24h 20m
American Airlines
Deal found 3/9$747
This Mytrip deal was found by Cheapflights users on 3/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:15 pm
SNN
-
SFO
2 stops27h 00m
Multiple Airlines
Mon 4/201:20 pm
SFO
-
SNN
2 stops23h 15m
Multiple Airlines
Deal found 3/10$749
This British Airways deal was found by Cheapflights users on 3/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:30 am
SNN
-
SFO
2 stops23h 39m
British Airways
Wed 4/292:10 pm
SFO
-
SNN
2 stops18h 00m
British Airways
Deal found 3/10$753
This British Airways deal was found by Cheapflights users on 3/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:30 am
SNN
-
SFO
2 stops22h 30m
British Airways
Thu 5/144:35 pm
SFO
-
SNN
1 stop20h 00m
British Airways
Deal found 3/10$756
This TravelUp deal was found by Cheapflights users on 3/11. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/252:30 pm
SNN
-
SFO
1 stop31h 57m
British Airways
Sat 5/23:17 pm
SFO
-
SNN
1 stop30h 43m
British Airways
Deal found 3/11$760

Find flight deals from Shannon to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Shannon (SNN) to San Francisco (SFO). 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 March 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$721
(British Airways)

One-way from

$308
(Kiwi.com)
Provider with most accurate pricing for Shannon-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Shannon-San Francisco flights.
Search Deals
From Shannon to San Francisco
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One-way flight from Shannon to San Francisco
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Shannon to San Francisco 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 March 12, 2026.
Use the filters below to find and compare flights from Shannon to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Wed 4/22

7:30 am-10:00 pm

2 stops22h 30m

San Francisco

Wed 4/29

2:10 pm-4:10 pm

2 stops18h 00m

$721
Quickest round-trip

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 5/7

7:30 am-10:00 pm

2 stops22h 30m

San Francisco

Mon 5/11

4:35 pm-4:10 pm

1 stop15h 35m

$721

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 4/16

9:15 pm-7:15 pm

2 stops30h 00m

San Francisco

Mon 4/20

5:43 pm-8:35 pm

2 stops18h 52m

$721

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 4/16

2:30 pm-1:10 pm

2 stops30h 40m

San Francisco

Mon 4/20

7:05 am-6:00 am

1 stop14h 55m

$735

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 5/15

2:30 pm-12:29 am

1 stop17h 59m

San Francisco

Tue 5/26

9:40 pm-6:00 am

1 stop24h 20m

$747

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sat 4/25

7:30 am-11:09 pm

2 stops23h 39m

San Francisco

Wed 4/29

2:10 pm-4:10 pm

2 stops18h 00m

$753

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Wed 4/22

7:30 am-10:00 pm

2 stops22h 30m

San Francisco

Thu 5/14

4:35 pm-8:35 pm

1 stop20h 00m

$756
Cheapest one-way

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Wed 6/3

8:50 pm-9:04 pm

2 stops32h 14m

$308

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Tue 4/21

7:30 am-3:55 pm

2 stops40h 25m

$422

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sun 6/28

7:30 am-3:50 pm

2 stops40h 20m

$454

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 14 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Shannon, Clare-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Shannon, Clare-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Shannon, Clare-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Shannon, Clare-San Francisco 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 Shannon, Clare-San Francisco 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 Shannon to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Shannon with our price prediction graph.
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.

Related info for your journey

Find useful and relevant information for your journey from Shannon to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Shannon, Clare to San Francisco?

    Airlines like British Airways and American Airlines fly from Shannon, Clare to San Francisco in about 22h 30m. The time it takes to get you to your destination can typically vary by up to 8h 10m. Shannon, Clare and San Francisco are separated by a distance of 5032 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Shannon to San Francisco that include hotel bookings?

    Yes. In addition to deals on Shannon to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Shannon to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Shannon to San Francisco.

  • Can I find deals for business class flights from Shannon to San Francisco?

    Yes. Cheapflights offers flight deals from Shannon to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
South San Francisco
Santa Clara
Santa Cruz
Livermore
Roseville
Watsonville
San Bruno
Sunnyvale
Vacaville
Turlock
San Carlos
San Ramon
Redwood City
Daly City
Rancho Cordova
San Lorenzo
Davis
Hollister
Manteca
Union City

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