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$369+ 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
Mar 8 — Mar 151
Sun 3/8
Sun 3/15
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 February 6, 2026.

This lastminute.com deal was found by Cheapflights users on 2/3. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:50 am
SNN
-
SFO
2 stops21h 33m
Multiple Airlines
Tue 3/105:20 pm
SFO
-
SNN
2 stops16h 25m
Multiple Airlines
Deal found 2/3$688
This American Airlines deal was found by Cheapflights users on 2/5. 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 2/262:45 pm
SNN
-
SFO
2 stops26h 55m
American Airlines
Mon 3/26:15 am
SFO
-
SNN
1 stop15h 40m
American Airlines
Deal found 2/5$699
This American Airlines deal was found by Cheapflights users on 2/3. 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 3/52:45 pm
SNN
-
SFO
2 stops26h 55m
American Airlines
Mon 3/95:34 pm
SFO
-
SNN
2 stops29h 46m
American Airlines
Deal found 2/3$700
This TravelUp deal was found by Cheapflights users on 2/5. 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.
Thu 3/52:00 pm
SNN
-
SFO
1 stop18h 52m
Multiple Airlines
Mon 3/96:30 pm
SFO
-
SNN
1 stop15h 15m
Multiple Airlines
Deal found 2/5$703
This TravelUp deal was found by Cheapflights users on 2/5. 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.
Thu 2/267:50 am
SNN
-
SFO
2 stops21h 33m
Multiple Airlines
Mon 3/210:03 am
SFO
-
SNN
2 stops17h 27m
Multiple Airlines
Deal found 2/5$720
This British Airways deal was found by Cheapflights users on 2/3. 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 stops23h 03m
British Airways
Mon 4/277:30 pm
SFO
-
SNN
1 stop31h 50m
British Airways
Deal found 2/3$732
This British Airways deal was found by Cheapflights users on 2/4. 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 5/159:15 pm
SNN
-
SFO
2 stops28h 25m
British Airways
Tue 5/264:35 pm
SFO
-
SNN
1 stop15h 35m
British Airways
Deal found 2/4$734
This American Airlines deal was found by Cheapflights users on 2/3. 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 3/57:50 am
SNN
-
SFO
2 stops22h 17m
American Airlines
Tue 3/106:30 pm
SFO
-
SNN
1 stop15h 15m
American Airlines
Deal found 2/3$744
This American Airlines deal was found by Cheapflights users on 2/5. 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 stop28h 47m
American Airlines
Tue 5/2610:03 pm
SFO
-
SNN
1 stop23h 57m
American Airlines
Deal found 2/5$756

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 February 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$688
(TravelUp)

One-way from

$369
(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
Search Deals
One-way flight from Shannon to San Francisco
Search Deals

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 February 6, 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

Thu 3/5

7:50 am-9:23 pm

2 stops21h 33m

San Francisco

Tue 3/10

5:20 pm-4:45 pm

2 stops16h 25m

$688

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 3/5

2:00 pm-11:10 am

1 stop29h 10m

San Francisco

Mon 3/9

11:35 pm-6:20 am

2 stops23h 45m

$688

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 2/26

2:45 pm-9:40 am

2 stops26h 55m

San Francisco

Mon 3/2

6:15 am-5:55 am

1 stop15h 40m

$699

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 3/5

2:45 pm-9:40 am

2 stops26h 55m

San Francisco

Mon 3/9

5:34 pm-6:20 am

2 stops29h 46m

$700

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 3/5

2:00 pm-12:52 am

1 stop18h 52m

San Francisco

Mon 3/9

6:30 pm-4:45 pm

1 stop15h 15m

$703

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 2/26

7:50 am-9:23 pm

2 stops21h 33m

San Francisco

Mon 3/2

10:03 am-11:30 am

2 stops17h 27m

$720

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Thu 4/23

7:30 am-10:33 pm

2 stops23h 03m

San Francisco

Mon 4/27

7:30 pm-11:20 am

1 stop31h 50m

$732

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Fri 5/15

7:30 am-11:59 pm

2 stops24h 29m

San Francisco

Tue 5/26

4:35 pm-4:10 pm

1 stop15h 35m

$733

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Tue 4/21

4:50 pm-3:50 pm

2 stops31h 00m

$369

ShannonSan Francisco

SNN - SFO

SNNSFO

Shannon

Tue 4/21

7:05 pm-4:10 pm

3 stops53h 05m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 11 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 and American Airlines fly from Shannon, Clare to San Francisco in about 26h 55m. The time it takes to get you to your destination can typically vary by up to 2h 15m. 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 Cruz
Santa Clara
Roseville
Livermore
Watsonville
San Bruno
Daly City
Sunnyvale
Turlock
Vacaville
San Carlos
San Ramon
San Lorenzo
Davis
Hollister
Redwood City
Manteca
Union City
Elk Grove

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