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$317+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
SNN — SFO
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This TravelUp deal was found by Cheapflights users on 1/25. 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.
Wed 3/118:05 pm
SNN
-
SFO
2 stops30h 42m
Multiple Airlines
Wed 3/182:00 pm
SFO
-
SNN
2 stops38h 30m
Multiple Airlines
Deal found 1/25$669
This British Airways deal was found by Cheapflights users on 1/26. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/88:05 pm
SNN
-
SFO
2 stops30h 25m
British Airways
Sun 2/1510:25 am
SFO
-
SNN
2 stops22h 20m
British Airways
Deal found 1/26$686
This TravelUp deal was found by Cheapflights users on 1/26. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/87:50 am
SNN
-
SFO
2 stops24h 57m
Multiple Airlines
Sun 2/155:30 pm
SFO
-
SNN
1 stop34h 00m
Multiple Airlines
Deal found 1/26$722
This British Airways deal was found by Cheapflights users on 1/24. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:30 am
SNN
-
SFO
2 stops22h 27m
British Airways
Mon 4/274:35 pm
SFO
-
SNN
1 stop20h 00m
British Airways
Deal found 1/24$733
This British Airways deal was found by Cheapflights users on 1/27. 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.
Fri 5/157:30 am
SNN
-
SFO
2 stops22h 27m
British Airways
Tue 5/263:00 pm
SFO
-
SNN
2 stops17h 10m
British Airways
Deal found 1/27$735
This Flighttix deal was found by Cheapflights users on 1/25. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/112:00 pm
SNN
-
SFO
1 stop28h 12m
British Airways
Wed 3/1812:30 pm
SFO
-
SNN
2 stops16h 00m
British Airways
Deal found 1/25$743
This Expedia deal was found by Cheapflights users on 1/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:50 am
SNN
-
SFO
2 stops22h 54m
Multiple Airlines
Thu 3/196:00 am
SFO
-
SNN
2 stops22h 30m
Multiple Airlines
Deal found 1/26$747
This American Airlines deal was found by Cheapflights users on 1/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/232:30 pm
SNN
-
SFO
1 stop17h 29m
American Airlines
Mon 4/277:00 am
SFO
-
SNN
1 stop15h 00m
American Airlines
Deal found 1/25$748
This TravelUp deal was found by Cheapflights users on 1/25. 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.
Wed 5/67:30 am
SNN
-
SFO
2 stops22h 27m
British Airways
Wed 5/274:35 pm
SFO
-
SNN
1 stop15h 35m
British Airways
Deal found 1/25$757

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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$669
(TravelUp)

One-way from

$317
(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 January 27, 2026.
Use the filters below to find and compare flights from Shannon to San Francisco that are best for you.

Fly from

Shannon

Fly to

San Francisco

Route

Depart

Return

Price

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Mon 2/9

7:50 am-6:30 pm

2 stops18h 40m

San Francisco

Sun 2/15

6:15 am-11:30 am

2 stops21h 15m

$686

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sun 2/8

8:05 pm-6:30 pm

2 stops30h 25m

San Francisco

Sun 2/15

10:25 am-4:45 pm

2 stops22h 20m

$686

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Sun 2/8

7:50 am-12:47 am

2 stops24h 57m

San Francisco

Sun 2/15

5:30 pm-11:30 am

1 stop34h 00m

$722

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 4/23

7:30 am-9:57 pm

2 stops22h 27m

San Francisco

Mon 4/27

4:35 pm-8:35 pm

1 stop20h 00m

$733

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 5/15

7:30 am-9:57 pm

2 stops22h 27m

San Francisco

Tue 5/26

3:00 pm-4:10 pm

2 stops17h 10m

$735

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Tue 4/21

7:05 pm-5:55 pm

2 stops54h 50m

$317

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Mon 4/20

6:20 am-4:10 pm

3 stops41h 50m

$437

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Tue 4/21

9:15 pm-1:50 pm

1 stop24h 35m

$463

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Mon 4/20

9:15 pm-1:50 pm

1 stop24h 35m

$463

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Wed 6/24

8:50 pm-3:50 pm

3 stops51h 00m

$534

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 13 results
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 18h 40m. 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
Roseville
Santa Clara
Livermore
Watsonville
San Bruno
Daly City
Sunnyvale
Turlock
Vacaville
San Carlos
San Ramon
Manteca
Vallejo
San Lorenzo
Davis
Hollister
Redwood City
Union City

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