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$438+ 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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SFO
May 28 — Jun 41
Thu 5/28
Thu 6/4
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 April 28, 2026.

This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/231:05 pm
SNN
-
SFO
1 stop17h 44m
KLM
Wed 5/278:50 am
SFO
-
SNN
1 stop18h 20m
KLM
Deal found 4/27$660
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.
Sat 5/231:05 pm
SNN
-
SFO
1 stop17h 44m
Multiple Airlines
Wed 5/2711:31 am
SFO
-
SNN
1 stop15h 39m
Multiple Airlines
Deal found 4/23$661
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/219:15 pm
SNN
-
SFO
1 stop24h 35m
British Airways
Mon 5/251:35 pm
SFO
-
SNN
2 stops18h 35m
British Airways
Deal found 4/27$781
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:30 am
SNN
-
SFO
2 stops24h 24m
British Airways
Mon 5/113:17 pm
SFO
-
SNN
2 stops16h 53m
British Airways
Deal found 4/23$784
This TravelUp 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/99:15 pm
SNN
-
SFO
2 stops29h 33m
British Airways
Tue 6/165:23 am
SFO
-
SNN
2 stops16h 37m
British Airways
Deal found 4/25$805
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:30 am
SNN
-
SFO
2 stops24h 29m
American Airlines
Mon 5/115:14 am
SFO
-
SNN
2 stops16h 11m
American Airlines
Deal found 4/26$830
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.
Tue 6/91:05 pm
SNN
-
SFO
1 stop31h 22m
Delta
Tue 6/161:00 pm
SFO
-
SNN
1 stop14h 10m
Delta
Deal found 4/25$844
This BusinessClass 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/159:15 pm
SNN
-
SFO
2 stops28h 24m
British Airways
Tue 5/267:30 pm
SFO
-
SNN
1 stop17h 05m
British Airways
Deal found 4/27$848
This BusinessClass 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/159:15 pm
SNN
-
SFO
2 stops28h 24m
Multiple Airlines
Tue 5/267:30 pm
SFO
-
SNN
1 stop17h 05m
Multiple Airlines
Deal found 4/25$851

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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$660
(KLM)

One-way from

$438
(Kiwi.com)
Provider with most accurate pricing for Shannon-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Shannon-San Francisco flights.
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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 April 28, 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

Sat 5/23

1:05 pm-10:49 pm

1 stop17h 44m

San Francisco

Wed 5/27

11:31 am-11:10 am

1 stop15h 39m

$661

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 5/21

9:15 pm-1:50 pm

1 stop24h 35m

San Francisco

Mon 5/25

7:30 pm-8:35 pm

1 stop17h 05m

$781

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 5/15

9:15 pm-5:39 pm

2 stops28h 24m

San Francisco

Tue 5/26

7:30 pm-8:35 pm

1 stop17h 05m

$848

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sat 5/23

9:30 am-5:42 pm

2 stops16h 12m

San Francisco

Wed 5/27

12:35 pm-10:15 am

1 stop13h 40m

$868

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sat 6/6

9:30 am-9:18 pm

1 stop19h 48m

San Francisco

Mon 9/7

10:11 am-7:30 am

1 stop13h 19m

$870
Quickest round-trip

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Mon 6/1

9:30 am-3:35 pm

1 stop14h 05m

San Francisco

Tue 9/8

10:11 am-7:30 am

1 stop13h 19m

$870
Cheapest one-way

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Tue 10/20

9:15 pm-10:19 pm

2 stops33h 04m

$516

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sun 10/11

9:15 pm-3:50 pm

2 stops26h 35m

$538
Quickest one-way

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 6/25

7:30 am-1:50 pm

1 stop14h 20m

$574

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Mon 7/6

9:15 pm-3:55 pm

2 stops26h 40m

$605

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 11 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 fly from Shannon, Clare to San Francisco in about 24h 35m. The time it takes to get you to your destination can typically vary by up to . Shannon, Clare and San Francisco are separated by a distance of 5032 mi.

  • 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 Cruz
Santa Clara
Fairfield
Rancho Cordova
San Bruno
Watsonville
San Ramon
Emeryville
Vacaville
Roseville
San Carlos
Redwood City
Sunnyvale
Turlock
San Lorenzo
Davis
Manteca
Union City
Elk Grove

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